US3583356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller shaft coupling for marine cruisers
Assignee: Chris Craft Industries Inc
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Filing: 1969-09-15
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Granted: 1971-06-08
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Expires: 1989-09-15
Abstract
Abstract A propeller shaft coupling for marine cruisers comprises a casing split longitudinally into two halves which are fastened together by cap screws to clamp the ends of adjacent propeller shaft sections. At the end of each shaft is secured a disc and the coupling has an internal recessed groove for receiving said discs thereby compensating for the tension produced when the power transmission is in reverse.
Inventors
- 👤 Milton T Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/02; F16D1/04; B; B63; B63B; B63B3/00; B63B3/14; B63B3/42; B63H; B63H20/00; B63H20/14; B63H20/20; B63H23/00; B63H23/32; B63H23/321; B63H2023/325; B63H23/34; B63H2023/342; F16D1/06; F16D1/08; F16D1/0852; F16D1/0864; Y; Y10; Y10T; Y10T403/00; Y10T403/57; Y10T403/5761; Y10T403/5766; Y10T403/5781
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means for drivingly connecting said engine to said propeller including at least two separate shafts in axial alignment, one of the shafts being connected to the engine and the other to the propeller, each of said shafts being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling including a key fitting into aligned keyways extending through each of said shafts for positively transmitting torque between said shafts, and means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse.
Claim 2
Dependent Claim
112 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means for drivingly connecting said engine to said propeller including at least two separate shafts in axial alignment, one of the shafts being connected to the engine and the other to the propeller, each of said shafts being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling including a key fitting into aligned keyways extending through each of said shafts for positively transmitting torque between said shafts, and means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse.
Claim 3
Dependent Claim
33 words
The construction according to claim 1 in which said axial thrust absorbing means includes transversely extending flanges secured to the respective shafts, and abutments within the coupling for engaging the respective flanges aforesaid.
Claim 4
Dependent Claim
150 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means drivingly connecting said engine tO said propeller including at least two separate shafts in axial alignment, one of said shafts being connected to the engine and the other to the propeller, said shafts each being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling for positively transmitting torque between said shafts, and means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse, said axial thrust absorbing means includes transversely extending flanges secured to the respective shafts and abutments within the coupling for engaging the respective flanges aforesaid, said flanges being annular discs attached to the ends of said shafts and said abutments are formed by the opposite sides of an annular recess within said coupling.
Claim 5
Dependent Claim
150 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means drivingly connecting said engine tO said propeller including at least two separate shafts in axial alignment, one of said shafts being connected to the engine and the other to the propeller, said shafts each being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling for positively transmitting torque between said shafts, and means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse, said axial thrust absorbing means includes transversely extending flanges secured to the respective shafts and abutments within the coupling for engaging the respective flanges aforesaid, said flanges being annular discs attached to the ends of said shafts and said abutments are formed by the opposite sides of an annular recess within said coupling.
Claim 6
Dependent Claim
134 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means drivingly connecting said engine to said propeller including at least two separate shafts in axial alignment, one of said shafts being connected to the engine and the other to the propeller, said shafts being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling for positively transmitting torque between said shafts, means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse, said coupling including two complementary half-round casing sections, means for clamping said two sections in engagement with said shafts, and a key extending lengthwise through corresponding keyways within said coupling and through keyways in the ends of said shafts.
Claim 7
Dependent Claim
134 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means drivingly connecting said engine to said propeller including at least two separate shafts in axial alignment, one of said shafts being connected to the engine and the other to the propeller, said shafts being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling for positively transmitting torque between said shafts, means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse, said coupling including two complementary half-round casing sections, means for clamping said two sections in engagement with said shafts, and a key extending lengthwise through corresponding keyways within said coupling and through keyways in the ends of said shafts.
Claim 8
Dependent Claim
30 words
The construction according to claim 4, in which the half sections are provided with an annular recess for receiving annular discs attached to the adjacent ends of the respective shafts.
Claim 9
Dependent Claim
175 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means drivingly connecting said engine to said propeller including at least two separate shafts in axial alignment, one of said shafts being connected to the engine and the other to the propeller, said shafts each being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling for positively transmitting torque between said shafts, means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse, said coupling being provided with a machined annular recess, a pair of annular discs at the adjacent ends of said shafts, machine screws for securing said discs to said shafts having heads engaging countersunk apertures in said discs, said coupling comprising two complementary half-round casing sections, cap screws for securing said two sections in clamping engagement with said shafts, and a key extending lengthwise through corresponding keyways within said coupling and through keyways in the ends of said shafts.
Claim 10
Dependent Claim
175 words
In a marine cruiser, a boat hull, an inboard engine, a propeller at the stern of the cruiser, means drivingly connecting said engine to said propeller including at least two separate shafts in axial alignment, one of said shafts being connected to the engine and the other to the propeller, said shafts each being supported in brackets attached to said hull, a coupling for interconnecting said two shafts, means in said coupling for positively transmitting torque between said shafts, means entirely within said coupling for absorbing axial thrust produced when said propeller is driven in reverse, said coupling being provided with a machined annular recess, a pair of annular discs at the adjacent ends of said shafts, machine screws for securing said discs to said shafts having heads engaging countersunk apertures in said discs, said coupling comprising two complementary half-round casing sections, cap screws for securing said two sections in clamping engagement with said shafts, and a key extending lengthwise through corresponding keyways within said coupling and through keyways in the ends of said shafts.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |