Patent DE274691C successfully refreshed from Google Patents.
US5078628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine propulsor
Assignee: Northrop Grumman Corp
•
Filing: 1989-06-23
•
Granted: 1992-01-07
•
Expires: 2009-06-23
Abstract
Abstract A marine propulsor for submersible vessels or surface vessels powered by underwater propulsion units. A shaftless motor with disk-shaped rotor and stator(s) is mounted in the vessel structure with a blade hub mounted on the rotor, the hub including propeller blades extending beyond the circumference of the vessel housing. The motor is substantially iron-free with much of the rotor/stator volume being occupied by windings, thus providing sufficient power without taking up substantial space or adding burdensome weight. The rotor is journal mounted in the vessel and circumferential thrust bearing assemblies are provided around the rotor/blade hub assembly. A water cooling/lubricating system is provided for the bearings and rotor/stator(s). Power is supplied individually to two stators mounted on either side of the rotor to control electromagnetic forces on the rotor to offset thrust forces and to reduce the magnitude of propulsor induced structural vibration. Rotor excitation current may be inductively supplied, or permanent magnets or low reluctance magnetic material may be mounted in the rotor. Sound insulation is interposed between stators and the vessel structure to dampen ac noise/vibrations. In a dual counter-rotating propulsor embodiment, a thrust transference member is interposed between propulsor assemblies.
Inventors
- 👤 Chester A. Garis, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:22
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/22; B63H23/24; B63H5/00; B63H5/07; B63H5/14; B63H2023/005; F; F16; F16C; F16C17/00; F16C17/12; F16C17/14
Claims Analysis
Total Claims: 143
Claim 1
Independent Claim
117 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; said body section including an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; and wherein said rotor is journalled on said inner housing.
Claim 2
Independent Claim
117 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; said body section including an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; and wherein said rotor is journalled on said inner housing.
Claim 3
Dependent Claim
59 words
A system as in claim 1 wherein said body section further includes a front housing portion; a plurality of spaced thrust bearing assemblies mounted on a peripheral area of said front housing portion around the circumference of said front housing portion; and said rotor assembly includes a peripheral bearing surface for engagement with said plurality of thrust bearing assemblies.
Claim 4
Dependent Claim
54 words
A system as in claim 2 further comprising: a fluid supply connected to a fluid passage in said body; and said fluid passage extending from said body into said body section and radially through said rotor to cool said rotor and to supply cooling and lubricating fluid to a peripheral section of said rotor.
Claim 5
Dependent Claim
24 words
A system as in claim 3 wherein said journal bearing comprises a plurality of spaced bearing plates attached to said housing outer circumference surface.
Claim 6
Dependent Claim
57 words
A system as in claim 4 wherein said fluid passage extending into said body section further comprises a plurality of secondary fluid passages extending through said housing and having outlets formed on said housing outer circumferential surface between said spaced bearing plates, whereby said journal bearing is lubricated and cooled by fluid supplied through said fluid passage.
Claim 7
Dependent Claim
50 words
A system as in claim 5 wherein said rotor includes an inner circumferential bearing surface, and a plurality of tertiary fluid passages extending radially through said rotor, said tertiary passages having fluid inlets in said rotor inner bearing surface and fluid outlets in an outer peripheral section of said rotor.
Claim 8
Dependent Claim
39 words
A system as in claim 6 wherein said rotor fluid outlets supply fluid to lubricate and cool said thrust bearing assemblies through the centrifugal force caused by rotation of said rotor drawing fluid outwardly through said tertiary fluid passages.
Claim 9
Dependent Claim
20 words
A system as in claim 2 further including a fluid passage extending radially through said stator to cool said stator.
Claim 10
Dependent Claim
97 words
A system as in claim 1 including at least two disk-shaped stators with said rotor and stators being axially aligned with a longitudinal axis of said body section; said stators being mounted to said body on either side of said rotor; said rotor being journal mounted in said body section; an electrical source for providing power to said stators; and means for varying the allocation of power provided between said at least two stators to electrically alter magnetic forces on said rotor, whereby propulsive thrust forces can be absorbed and propulsor induced structural vibration can be reduced.
Claim 11
Dependent Claim
35 words
A system as in claim 4 wherein said electrical source includes a variable frequency controller coupled to said stators, whereby the frequency of power supplied to said stators can be increased gradually from zero cycles/second.
Claim 12
Dependent Claim
14 words
A system as in claim 10 wherein said variable frequency controller is a cycloconverter.
Claim 13
Dependent Claim
14 words
A system as in claim 9 further including permanent magnets mounted in said rotor.
Claim 14
Dependent Claim
16 words
A system as in claim 12 further including low reluctance magnetic material mounted in said rotor.
Claim 15
Dependent Claim
34 words
A system as in claim 1 further including, means for inductively supplying excitation current to said rotor, said excitation means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 16
Dependent Claim
18 words
A system as in claim 1 wherein said rotor includes permanent magnets for producing a rotor magnetic field.
Claim 17
Dependent Claim
80 words
A system as in claim 1 including, at least two disk-shaped stators, said rotor and stators being axially aligned with a longitudinal axis of said first body section, and wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 18
Dependent Claim
126 words
A system as in claim 1 including, at least two rotor assemblies including two disk-shaped rotors and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said body section and said propulsor blades being attached to an outer circumferential surface of each of said rotor assemblies, and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for applying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 19
Dependent Claim
20 words
A system as in claim 1 further comprising a shroud attached to said body and extending around said propulsor blades.
Claim 20
Dependent Claim
24 words
A system as in claim 1 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 21
Dependent Claim
61 words
A system as in claim 1 wherein said rotor assembly includes a hub assembly; said propulsor blades are mounted on said hub assembly which is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 22
Dependent Claim
15 words
A system as in claim 1 wherein said rotor and stator are substantially iron free.
Claim 23
Independent Claim
135 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; said body section further including a front housing portion; a plurality of spaced thrust bearing assemblies mounted on a peripheral area of said front housing portion around the circumference of said front housing portion; and said rotor assembly including a peripheral bearing surface for engagement with said plurality of thrust bearing assemblies.
Claim 24
Independent Claim
135 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; said body section further including a front housing portion; a plurality of spaced thrust bearing assemblies mounted on a peripheral area of said front housing portion around the circumference of said front housing portion; and said rotor assembly including a peripheral bearing surface for engagement with said plurality of thrust bearing assemblies.
Claim 25
Dependent Claim
52 words
A system as in claim 22 further including a rear housing portion; a thrust bearing assembly mounted on a peripheral area of said rear housing portion around the circumference of said rear housing portion; and said rotor assembly including front and rear peripheral bearing surfaces for engagement with said thrust bearing assemblies.
Claim 26
Dependent Claim
27 words
A system as in claim 22 wherein said thrust bearing assembly comprises a plurality of spaced thrust bearing subassemblies arranged around the circumference of said housing portion.
Claim 27
Dependent Claim
18 words
A system as in claim 22 wherein said thrust bearing assembly is a single annular thrust bearing assembly.
Claim 28
Dependent Claim
54 words
A system as in claim 22 further including a fluid supply connected to a fluid passage in said body; and said fluid passage extending from said body into said body section and radially through said rotor to cool said rotor and to supply cooling and lubricating fluid to a peripheral section of said rotor.
Claim 29
Dependent Claim
95 words
A system as in claim 22 including at least two disk-shaped stators, said rotor and stators being axially aligned with a longitudinal axis of said body section, wherein said stators are mounted to said body on either side of said rotor; said rotor being journal mounted in said body section; an electrical source for providing power to said stators; and means for varying the allocation of power provided between said two stators to electrically alter magnetic forces on said rotor, whereby propulsive thrust forces can be absorbed and propulsor induced structural vibration can be reduced.
Claim 30
Dependent Claim
35 words
A system as in claim 27 wherein said electrical source includes a variable frequency controller coupled to said stators, whereby the frequency of power supplied to said stators can be increased gradually from zero cycles/second.
Claim 31
Dependent Claim
34 words
A system as in claim 22 further including, means for inductively supplying excitation current to said rotor, said excitation means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 32
Dependent Claim
73 words
A system as in claim 22 wherein said body section includes an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; said rotor being journalled on said inner housing; a fluid supply connected to a fluid passage in said body; said fluid passage extending from said body into said inner housing and to said journal bearing to lubricate and cool said journal bearing.
Claim 33
Dependent Claim
24 words
A system as in claim 30 wherein said journal bearing comprises a plurality of spaced bearing plates attached to said housing outer circumferential surface.
Claim 34
Dependent Claim
56 words
A system as in claim 31 wherein said fluid passage extending into said housing further comprises a plurality of secondary fluid passages extending through said housing and having outlets formed on said housing outer circumferential surface between said spaced bearing plates, whereby said journal bearing is lubricated and cooled by fluid supplied through said fluid passage.
Claim 35
Dependent Claim
49 words
A system as in claim 32 wherein said rotor includes an inner circumferential bearing surface, and a plurality of tertiary fluid passages extending radially through said rotor, said tertiary passages having fluid inlets in said inner bearing surface and fluid outlets in an outer peripheral section of said rotor.
Claim 36
Dependent Claim
39 words
A system as in claim 33 wherein said rotor fluid outlets supply fluid to lubricate and cool said thrust bearing assemblies through the centrifugal force caused by rotation of said rotor drawing fluid outwardly through said tertiary fluid passages.
Claim 37
Dependent Claim
61 words
A system as in claim 22 including two stators and, wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 38
Dependent Claim
124 words
A system as in claim 22 including, at least two rotor assemblies including two disk-shaped rotors and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said body section; said propulsor blades attached to an outer circumferential surface of each of said rotor assemblies; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for applying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 39
Dependent Claim
15 words
A system as in claim 22 further including a shroud extending around said propulsor blades.
Claim 40
Dependent Claim
24 words
A system as in claim 22 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 41
Dependent Claim
61 words
A system as in claim 22 wherein, said rotor assembly includes a hub assembly; said propulsor blades are mounted on said hub assembly which is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 42
Dependent Claim
15 words
A system as in claim 22 wherein said rotor and stator are substantially iron free.
Claim 43
Independent Claim
130 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; a fluid supply connected to a fluid passage in said body; and said fluid passage extending from said body into said body section and radially through said rotor to cool said rotor and to supply fluid for cooling and lubricating to a peripheral section of said rotor.
Claim 44
Independent Claim
130 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; a fluid supply connected to a fluid passage in said body; and said fluid passage extending from said body into said body section and radially through said rotor to cool said rotor and to supply fluid for cooling and lubricating to a peripheral section of said rotor.
Claim 45
Dependent Claim
19 words
A system as in claim 41 wherein said fluid passage extends radially through said stator to cool said stator.
Claim 46
Dependent Claim
79 words
A system as in claim 41 including two disk-shaped stators and wherein, said stators are mounted to said body on either side of said rotor; said rotor being journal mounted in said body section; an electrical source for providing power to said stators; and means for varying the allocation of power provided between said two stators to electrically alter magnetic forces on said rotor, whereby propulsive thrust forces can be absorbed and propulsor induced structural vibration can be reduced.
Claim 47
Dependent Claim
35 words
A system as in claim 43 wherein, said electrical source includes a variable frequency controller coupled to said stators, whereby the frequency of power supplied to said stators can be increased gradually from zero cycles/second.
Claim 48
Dependent Claim
34 words
A system as in claim 41 further including, means for inductively supplying excitation current to said rotor, said excitation means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 49
Dependent Claim
63 words
A system as in claim 41 wherein, said body section includes an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; said rotor being journalled on said inner housing; and said fluid passage extending from said body into said inner housing and to said journal bearing to lubricate and cool said journal bearing.
Claim 50
Dependent Claim
24 words
A system as in claim 46 wherein, said journal bearing comprises a plurality of spaced bearing plates attached to said housing outer circumferential surface.
Claim 51
Dependent Claim
56 words
A system as in claim 47 wherein, said fluid passage extending into said housing further comprises a plurality of secondary fluid passages extending through said housing and having outlets formed on said housing outer circumferential surface between said spaced bearing plates, whereby said journal bearing is lubricated and cooled by fluid supplied through said fluid passage.
Claim 52
Dependent Claim
49 words
A system as in claim 48 wherein, said rotor includes an inner circumferential bearing surface, and a plurality of tertiary fluid passages extending radially through said rotor, said tertiary passages having fluid inlets in said inner bearing surface and fluid outlets in an outer peripheral section of said rotor.
Claim 53
Dependent Claim
76 words
A system as in claim 49 wherein, said body section further includes a front housing portion, a plurality of spaced thrust bearing assemblies mounted on an outer peripheral area of said front housing portion around the circumference of said front housing portion; and wherein said rotor fluid outlets supply fluid to lubricate and cool said thrust bearing assemblies through the centrifugal force caused by rotation of said rotor drawing fluid outwardly through said tertiary fluid passages.
Claim 54
Dependent Claim
61 words
A system as in claim 41 including two stators and, wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 55
Dependent Claim
125 words
A system as in claim 41 including, at least two rotor assemblies including two disk-shaped rotors, and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said first body section; said propulsor blades attached to an outer circumferential surface of each of said rotor assemblies; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for applying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 56
Dependent Claim
15 words
A system as in claim 41 further including a shroud extending around said propulsor blades.
Claim 57
Dependent Claim
24 words
A system as in claim 41 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 58
Dependent Claim
61 words
A system as in claim 41 wherein, said rotor assembly includes a hub assembly; said propulsor blades are mounted on said hub assembly which is removably attached to said rotor: said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 59
Dependent Claim
14 words
A system as in claim 55 including, a shroud extending around said propulsor blades.
Claim 60
Dependent Claim
26 words
A system as in claim 56 wherein said shroud has a fluid inlet for channeling fluid to said body section for cooling and lubricating said propulsor.
Claim 61
Dependent Claim
19 words
A system as in claim 56 further including struts located before and after said propulsor blades to increase maneuverability.
Claim 62
Dependent Claim
20 words
A system as in claim 56 wherein said rotor, stator, and shroud are split to facilitate assembly within said body.
Claim 63
Dependent Claim
15 words
A system as in claim 41 wherein said rotor and stator are substantially iron free.
Claim 64
Independent Claim
180 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least two disk-shaped stators, said rotor and stators being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and wherein said stators are mounted to said body on either side of said rotor; said rotor being journal mounted in said body section; an electrical source for providing power to said stators; and means for varying the allocation of power provided between said at least two stators to provide a first magnitude of power to a first stator and a different second magnitude of power to a second stator to electrically alter magnetic forces on said rotor, whereby propulsive thrust forces can be absorbed and propulsor induced structural vibration can be reduced.
Claim 65
Independent Claim
180 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least two disk-shaped stators, said rotor and stators being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and wherein said stators are mounted to said body on either side of said rotor; said rotor being journal mounted in said body section; an electrical source for providing power to said stators; and means for varying the allocation of power provided between said at least two stators to provide a first magnitude of power to a first stator and a different second magnitude of power to a second stator to electrically alter magnetic forces on said rotor, whereby propulsive thrust forces can be absorbed and propulsor induced structural vibration can be reduced.
Claim 66
Dependent Claim
35 words
A system as in claim 61 wherein said electrical source includes a variable frequency controller coupled to said stators, whereby the frequency of power supplied to said stators can be increased gradually from zero cycles/second.
Claim 67
Dependent Claim
12 words
A system as in claim 62 wherein said controller is a cycloconverter.
Claim 68
Dependent Claim
34 words
A system as in claim 61 further including, means for inductively supplying excitation current to said rotor, said supply means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 69
Dependent Claim
73 words
A system as in claim 61 wherein, said body section includes an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; said rotor being journalled on said inner housing; a fluid supply connected to a fluid passage in said body; said fluid passage extending from said body into said inner housing and to said journal bearing to lubricate and cool said journal bearing.
Claim 70
Dependent Claim
24 words
A system as in claim 65 wherein, said journal bearing comprises a plurality of spaced bearing plates attached to said housing outer circumferential surface.
Claim 71
Dependent Claim
56 words
A system as in claim 66 wherein, said fluid passage extending into said housing further comprises a plurality of secondary fluid passages extending through said housing and having outlets formed on said housing outer circumferential surface between said spaced bearing plates, whereby said journal bearing is lubricated and cooled by fluid supplied through said fluid passage.
Claim 72
Dependent Claim
49 words
A system as in claim 67 wherein, said rotor includes an inner circumferential bearing surface, and a plurality of tertiary fluid passages extending radially through said rotor, said tertiary passages having fluid inlets in said inner bearing surface and fluid outlets in an outer peripheral section of said rotor.
Claim 73
Dependent Claim
76 words
A system as in claim 68 wherein, said body section further includes a front housing portion, a plurality of spaced thrust bearing assemblies mounted on an outer peripheral area of said front housing portion around the circumference of said front housing portion; and wherein said rotor fluid outlets supply fluid to lubricate and cool said thrust bearing assemblies through the centrifugal force caused by rotation of said rotor drawing fluid outwardly through said tertiary fluid passages.
Claim 74
Dependent Claim
61 words
A system as in claim 61 including two stators and, wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 75
Dependent Claim
124 words
A system as in claim 61 including, at least two rotor assemblies including two disk-shaped rotors, and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said body section; said propulsor blades attached to an outer circumferential surface of each of said rotor assemblies; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for supplying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 76
Dependent Claim
15 words
A system as in claim 61 further including a shroud extending around said propulsor blades.
Claim 77
Dependent Claim
24 words
A system as in claim 61 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 78
Dependent Claim
63 words
A system as in claim 61 wherein, said rotor assembly further includes a hub assembly, and said propulsor blades are mounted on said hub assembly that is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 79
Dependent Claim
15 words
A system as in claim 74 further including a shroud extending around said propulsor blades.
Claim 80
Dependent Claim
20 words
A system as in claim 75 wherein said rotor, stator and shroud are split to facilitate assembly in said body.
Claim 81
Dependent Claim
15 words
A system as in claim 61 wherein said rotor and stator are substantially iron free.
Claim 82
Independent Claim
109 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; means for inductively supplying excitation current to said rotor, said excitation means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 83
Independent Claim
109 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; means for inductively supplying excitation current to said rotor, said excitation means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 84
Dependent Claim
61 words
A system as in claim 78 including two stators and, wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 85
Dependent Claim
125 words
A system as in claim 78 including, at least two rotor assemblies including two disk-shaped rotors, and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said first body section; said propulsor blades attached to an outer circumferential surface of each of said rotor assemblies; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for supplying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 86
Dependent Claim
15 words
A system as in claim 78 further including a shroud extending around said propulsor blades.
Claim 87
Dependent Claim
24 words
A system as in claim 78 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 88
Dependent Claim
61 words
A system as in claim 78 wherein, said rotor assembly includes a hub assembly; said propulsor blades are mounted on said hub assembly which is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 89
Dependent Claim
15 words
A system as in claim 83 further including a shroud extending around said propulsor blades.
Claim 90
Dependent Claim
20 words
A system as in claim 84 wherein said rotor, stator, and shroud are split to facilitate assembly in said body.
Claim 91
Dependent Claim
15 words
A system as in claim 78 wherein said rotor and stator are substantially iron free.
Claim 92
Dependent Claim
16 words
A system as in claim 78 further including a rotor excitation controller for varying rotor excitation.
Claim 93
Independent Claim
149 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; said body section including an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; said rotor being journalled on said inner housing; a fluid supply connected to a fluid passage in said body; said fluid passage extending from said body into said inner housing and to said journal bearing to lubricate and cool said journal bearing.
Claim 94
Independent Claim
149 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; said body section including an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; said rotor being journalled on said inner housing; a fluid supply connected to a fluid passage in said body; said fluid passage extending from said body into said inner housing and to said journal bearing to lubricate and cool said journal bearing.
Claim 95
Dependent Claim
19 words
A system as in claim 88 wherein said fluid passage extends radially through said stator to cool said stator.
Claim 96
Dependent Claim
24 words
A system as in claim 88 wherein said journal bearing comprises a plurality of spaced bearing plates attached to said housing outer circumferential surface.
Claim 97
Dependent Claim
56 words
A system as in claim 90 wherein said fluid passage extending into said housing further comprises a plurality of secondary fluid passages extending through said housing and having outlets formed on said housing outer circumferential surface between said spaced bearing plates, whereby said journal bearing is lubricated and cooled by fluid supplied through said fluid passage.
Claim 98
Dependent Claim
49 words
A system as in claim 91 wherein said rotor includes an inner circumferential bearing surface, and a plurality of tertiary fluid passages extending radially through said rotor, said tertiary passages having fluid inlets in said inner bearing surface and fluid outlets in an outer peripheral section of said rotor.
Claim 99
Dependent Claim
76 words
A system as in claim 92 wherein said body section further includes a front housing portion; a plurality of spaced thrust bearing assemblies mounted on an outer peripheral area of said front housing portion around the circumference of said front housing portion; and wherein said rotor fluid outlets supply fluid to lubricate and cool said thrust bearing assemblies through the centrifugal force caused by rotation of said rotor drawing fluid outwardly through said tertiary fluid passages.
Claim 100
Dependent Claim
61 words
A system as in claim 88 including two stators and, wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 101
Dependent Claim
123 words
A system as in claim 88 including, at least two rotor assemblies including disk-shaped rotors and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said body section; said propulsor blades attached to an outer circumferential surface of each of said rotor assemblies; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for supplying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 102
Dependent Claim
15 words
A system as in claim 88 further including a shroud extending around said propulsor blades.
Claim 103
Dependent Claim
24 words
A system as in claim 88 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 104
Dependent Claim
61 words
A system as in claim 88 wherein, said rotor assembly includes a hub assembly; said propulsor blades are mounted on said hub assembly which is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 105
Dependent Claim
15 words
A system as in claim 98 further including a shroud extending around said propulsor blades.
Claim 106
Dependent Claim
20 words
A system as in claim 99 wherein said rotor, stator, and shroud are split to facilitate assembly in said body.
Claim 107
Independent Claim
138 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and at least two disk-shaped stators, said rotor and stators being axially aligned with a longitudinal axis of said first body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 108
Independent Claim
138 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and at least two disk-shaped stators, said rotor and stators being axially aligned with a longitudinal axis of said first body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and wherein said stators are mounted to said body on either side of said rotor; a power source for supplying alternating current to said stators; and sound attenuating material interposed between said stators and said body to dampen alternating current vibrations of said body resulting from alternating current flowing through said stators.
Claim 109
Dependent Claim
123 words
A system as in claim 101 including, at least two rotor assemblies including disk-shaped rotors and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said body section; said propulsor blades attached to an outer circumferential surface of each of said rotor assemblies; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for applying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 110
Dependent Claim
15 words
A system as in claim 101 further including a shroud extending around said propulsor blades.
Claim 111
Dependent Claim
24 words
A system as in claim 101 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 112
Dependent Claim
61 words
A system as in claim 101 wherein, said rotor assembly includes a hub assembly; said propulsor blades are mounted on said hub assembly which is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 113
Dependent Claim
20 words
A system as in claim 105 further including a shroud attached to said body and extending around said propulsor blades.
Claim 114
Dependent Claim
20 words
A system as in claim 106 wherein said rotor, stator, and shroud are split to facilitate assembly in said body.
Claim 115
Independent Claim
161 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least two disk-shaped rotors and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said body section; two rotor assemblies including said rotors; said propulsor including propulsor blades attached to an outer circumferential surface of each of said rotor assemblies and extending beyond the periphery of said body; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for supplying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 116
Independent Claim
161 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least two disk-shaped rotors and at least four disk-shaped stators, said rotors and stators being axially aligned with a longitudinal axis of said body section; two rotor assemblies including said rotors; said propulsor including propulsor blades attached to an outer circumferential surface of each of said rotor assemblies and extending beyond the periphery of said body; and wherein said stators are mounted to said body with one stator arranged on either side of each of said rotors; means for supplying alternating current to each of said stators such that said rotors rotate in opposite directions when current is supplied to said stators; and thrust transference means interposed between said two rotor assemblies to transfer thrust from one rotor assembly to the other rotor assembly and to said body.
Claim 117
Dependent Claim
15 words
A system as in claim 108 further including a shroud extending around said propulsor blades.
Claim 118
Dependent Claim
24 words
A system as in claim 108 wherein said fluid is water and said rotor and stator operate in water and under submergence water pressure.
Claim 119
Dependent Claim
60 words
A system as in claim 108 wherein, said rotor assemblies include hub assemblies, said propulsor blades are mounted on said hub assemblies which are removably attached to said rotors; said rotors being removably journal mounted to said body section; and said stators being removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 120
Dependent Claim
15 words
A system as in claim 111 further including a shroud extending around said propulsor blades.
Claim 121
Dependent Claim
20 words
A system as in claim 112 wherein said rotors, stators, and shroud are split to facilitate assembly in said body.
Claim 122
Dependent Claim
32 words
A system as in claim 108 wherein said thrust transference means is fixed to said body and thrust from each rotor assembly is transferred directly to said body through thrust bearing assemblies.
Claim 123
Independent Claim
118 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said first body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and a shroud extending around said propulsor blades, wherein said shroud includes a fluid inlet for channeling fluid to said body section for cooling and lubricating said rotor and stator.
Claim 124
Independent Claim
118 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said first body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and a shroud extending around said propulsor blades, wherein said shroud includes a fluid inlet for channeling fluid to said body section for cooling and lubricating said rotor and stator.
Claim 125
Dependent Claim
19 words
A system as in claim 115 further including struts located before and after said propulsor blades to increase maneuverability.
Claim 126
Independent Claim
137 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said first body section; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and wherein a rotor assembly including a rotor and a hub assembly; said propulsor blades re mounted on said hub assembly which is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 127
Independent Claim
137 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with a disk-shaped rotor and a disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said first body section; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; and wherein a rotor assembly including a rotor and a hub assembly; said propulsor blades re mounted on said hub assembly which is removably attached to said rotor; said rotor is removably journal mounted to said body section; and said stator is removably mounted to said body, whereby said propelling system can be mounted in stages within said body.
Claim 128
Dependent Claim
19 words
A system as in claim 117 wherein said rotor and stator are split to facilitate assembly in said body.
Claim 129
Dependent Claim
29 words
A system as in claim 117 further including a shroud extending around said propulsor blades, and said rotor, stator, and shroud being split to facilitate mounting in said body.
Claim 130
Independent Claim
182 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; said body section further includes front and rear housing portions; a plurality of spaced thrust bearing assemblies mounted on peripheral areas of said front and rear housing portions around the circumference of said front and rear housing portions; and said rotor assembly including front and rear peripheral bearing surfaces of engagement with said plurality of thrust bearing assemblies.
Claim 131
Independent Claim
182 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; said body section further includes front and rear housing portions; a plurality of spaced thrust bearing assemblies mounted on peripheral areas of said front and rear housing portions around the circumference of said front and rear housing portions; and said rotor assembly including front and rear peripheral bearing surfaces of engagement with said plurality of thrust bearing assemblies.
Claim 132
Independent Claim
182 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; said body section further includes front and rear housing portions; an annular thrust bearing assembly mounted on a peripheral area of each of said front and rear housing portions around the circumference of said front and rear housing portions; and said rotor assembly including front and rear peripheral bearing surfaces for engagement with said annular thrust bearing assemblies.
Claim 133
Independent Claim
182 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; said body section further includes front and rear housing portions; an annular thrust bearing assembly mounted on a peripheral area of each of said front and rear housing portions around the circumference of said front and rear housing portions; and said rotor assembly including front and rear peripheral bearing surfaces for engagement with said annular thrust bearing assemblies.
Claim 134
Independent Claim
151 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; and means for inductively supplying excitation current to said rotor, said excitation means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 135
Independent Claim
151 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; and means for inductively supplying excitation current to said rotor, said excitation means including primary coils in said stator and secondary coils and rectifiers in said rotor.
Claim 136
Independent Claim
133 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10l% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; and wherein permanent magnets are mounted in said rotor.
Claim 137
Independent Claim
133 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10l% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; and wherein permanent magnets are mounted in said rotor.
Claim 138
Independent Claim
191 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; said body section includes an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; said rotor being journalled on said inner housing; a fluid supply connected to a fluid passage in said body; and said fluid passage extending from said body into said inner housing and to said journal bearing to lubricate and cool said journal bearing.
Claim 139
Independent Claim
191 words
A system for propelling a body through a fluid comprising: a body section having a generally cylindrical configuration; a propulsor mounted within said body section; said propulsor including a shaft-free motor with at least one disk-shaped rotor and at least one disk-shaped stator, said rotor and stator being axially aligned with a longitudinal axis of said body section; a rotor assembly including said rotor; said propulsor including propulsor blades attached to an outer circumferential surface of said rotor assembly and extending beyond the periphery of said body; wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section; said body section includes an inner, substantially cylindrical housing having an outer circumferential surface; a journal bearing mounted on said housing outer circumferential surface; said rotor being journalled on said inner housing; a fluid supply connected to a fluid passage in said body; and said fluid passage extending from said body into said inner housing and to said journal bearing to lubricate and cool said journal bearing.
Claim 140
Dependent Claim
15 words
A system as in claim 124 further including a shroud extending around said propulsor blades.
Claim 141
Dependent Claim
24 words
A system as in claim 124 wherein said fluid is water, and said rotor and stator operate in water and under submergence water pressure.
Claim 142
Dependent Claim
24 words
A system as in claim 124 wherein, said journal bearing comprises a plurality of spaced bearing plates attached to said housing outer circumferential surface.
Claim 143
Independent Claim
49 words
A system as in claims 1, 22, 61, 101, 108 or 117, wherein said disk-shaped rotor and stator have a radial dimension that is at least 10% of the nominal diameter of said generally cylindrical body section at the point where said propulsor is mounted within said body section.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |