US4238540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber reinforced composite shaft with metallic connector sleeves mounted by connector ring interlock
Assignee: SUBJECT TO AGREEMENT RECITED SEE DOCUMENT FOR DETAILS
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Filing: 1979-05-29
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Granted: 1980-12-09
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Expires: 1999-05-29
Abstract
Abstract A tubular fiber reinforced composite shaft is formed (as described) which integrally incorporates a metal sleeve or connection at the end thereof. Initially a metal sleeve having longitudinal grooves is positioned upon a segment of a mandrel. The grooves are inclined in a direction extending longitudinally inwardly and radially outwardly. Fibrous material bearing a non-solidified resinous material is applied around the mandrel and around the grooves in the sleeve. An annular lock ring having radially inwardly projecting ridges is inserted axially over the fibrous material whereby the ridges press the fibrous material into the grooves in the sleeve. The resinous material is then solidified to form a tubular composite shaft whereby a torsion-transmitting connection is made with the sleeve.
Inventors
- 👤 Derek N. Yates
- 👤 John C. Presta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
F; F16; F16C; F16C3/00; F16C3/02; F16C3/026; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/29; Y10T428/2913; Y10T428/2918
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
158 words
A method of forming a tubular reinforced composite shaft comprising the steps of: providing a metal sleeve having longitudinally extending, circumferentially spaced grooves on an outer periphery thereof which are each inclined in a direction extending longitudinally inwardly and radially outwardly; positioning said sleeve upon a segment of a mandrel; applying fibrous material bearing a non-solidified resinous material upon said mandrel and over said grooves in said sleeve; providing an annular lock ring having longitudinally extending, circumferentially spaced ridges on an inside periphery thereof which are each inclined in a direction extending longitudinally inwardly and radially outwardly; inserting said lock ring over said sleeve and fibrous material applied thereto, with said ridges overlying said grooves in said sleeve to press portions of said fibrous material into said grooves; solidifying said resinous material with portions of said previously applied resinous material being positioned in said grooves to create a torsion-transmitting connection with said metal sleeve; and removing said mandrel.
Claim 2
Independent Claim
158 words
A method of forming a tubular reinforced composite shaft comprising the steps of: providing a metal sleeve having longitudinally extending, circumferentially spaced grooves on an outer periphery thereof which are each inclined in a direction extending longitudinally inwardly and radially outwardly; positioning said sleeve upon a segment of a mandrel; applying fibrous material bearing a non-solidified resinous material upon said mandrel and over said grooves in said sleeve; providing an annular lock ring having longitudinally extending, circumferentially spaced ridges on an inside periphery thereof which are each inclined in a direction extending longitudinally inwardly and radially outwardly; inserting said lock ring over said sleeve and fibrous material applied thereto, with said ridges overlying said grooves in said sleeve to press portions of said fibrous material into said grooves; solidifying said resinous material with portions of said previously applied resinous material being positioned in said grooves to create a torsion-transmitting connection with said metal sleeve; and removing said mandrel.
Claim 3
Dependent Claim
24 words
A method according to claim 1, further including the step of mechanically connecting said ring directly to said sleeve subsequent to said inserting step.
Claim 4
Dependent Claim
26 words
A method according to claim 2, wherein said mechanically connecting step comprises bending a plurality of tabs on said ring into associated apertures in said sleeve.
Claim 5
Dependent Claim
78 words
A method according to claim 1, wherein said step of providing a metallic sleeve further comprises providing a sleeve whose grooves are defined by circumferentially spaced, longitudinally extending ribs which are each inclined in a direction extending longitudinally inwardly and radially outwardly; said step of providing a lock ring further comprising providing a lock ring whose ridges are disposed between longitudinally extending, circumferentially spaced recesses which are each inclined in a direction extending longitudinally inwardly and radially outwardly.
Claim 6
Dependent Claim
44 words
A method according to claim 4, wherein said step of providing a metal sleeve further comprises providing a sleeve whose ribs are inclined at a steeper angle than said grooves such that the radial depth of each groove increases in a longitudinally inward direction.
Claim 7
Dependent Claim
101 words
A method according to claim 4, wherein said step of providing a metal sleeve further comprises providing a sleeve whose grooves are each inclined in a direction extending longitudinally inwardly and radially outwardly along a longitudinally outer extent of the sleeve, and are inclined in a direction extending longitudinally and radially inwardly along a longitudinally inner extent of the sleeve; and whose ribs are each inclined in a direction extending longitudinally inwardly and radially outwardly along said longitudinally outer extent of said sleeve; and inclined in a direction extending longitudinally and radially inwardly along said longitudinally inner extent of said sleeve.
Claim 8
Dependent Claim
42 words
A method according to claim 6 wherein said step of providing a metal sleeve further comprises providing a metal sleeve whose grooves have an inclination along said longitudinally inner extent which is steeper than the inclination of said ribs along such extent.
Claim 9
Independent Claim
211 words
A method of forming a tubular reinforced composite drive shaft comprising the steps of: providing a metal sleeve having longitudinally extending, circumferentially spaced grooves and ribs on an outer periphery thereof, each of said ribs and grooves being inclined in a direction extending longitudinally inwardly and radially outwardly along a longitudinally outer extent of said sleeve, and inclined in a direction extending longitudinally and radially inwardly along a longitudinally inner extent of said sleeve; positioning said sleeve upon a segment of a mandrel; applying fibrous material bearing a non-solidified resinous material upon said mandrel and over said grooves in said sleeve along said inner and outer extents of said sleeve; providing an annular lock ring having longitudinally extending, circumferentially spaced ridges and recesses on an inside periphery thereof, each of said ridges and recesses being inclined in a direction extending longitudinally inwardly and radially outwardly; inserting said lock ring over said outer extent of said sleeve and over said fibrous material applied thereto, with said ridges overlying said grooves in said sleeve to press portions of said fibrous material into said grooves; solidifying said resinous material with portions of said previously applied resinous material positioned in said grooves to create a torsiontransmitting connection with said metal sleeve; and removing said mandrel.
Claim 10
Independent Claim
211 words
A method of forming a tubular reinforced composite drive shaft comprising the steps of: providing a metal sleeve having longitudinally extending, circumferentially spaced grooves and ribs on an outer periphery thereof, each of said ribs and grooves being inclined in a direction extending longitudinally inwardly and radially outwardly along a longitudinally outer extent of said sleeve, and inclined in a direction extending longitudinally and radially inwardly along a longitudinally inner extent of said sleeve; positioning said sleeve upon a segment of a mandrel; applying fibrous material bearing a non-solidified resinous material upon said mandrel and over said grooves in said sleeve along said inner and outer extents of said sleeve; providing an annular lock ring having longitudinally extending, circumferentially spaced ridges and recesses on an inside periphery thereof, each of said ridges and recesses being inclined in a direction extending longitudinally inwardly and radially outwardly; inserting said lock ring over said outer extent of said sleeve and over said fibrous material applied thereto, with said ridges overlying said grooves in said sleeve to press portions of said fibrous material into said grooves; solidifying said resinous material with portions of said previously applied resinous material positioned in said grooves to create a torsiontransmitting connection with said metal sleeve; and removing said mandrel.
Claim 11
Dependent Claim
24 words
A method according to claim 8 and further including the step of inserting lock tabs of said lock ring into apertures in said sleeve.
Claim 12
Independent Claim
134 words
A method of forming a tubular reinforced composite shaft comprising the steps of: providing a metal sleeve having longitudinally extending, circumferentially spaced grooves on an outer periphery thereof; positioning said sleeve upon a segment of a mandrel; applying fibrous material bearing a non-solidified resinous material upon said mandrel and over said grooves in said sleeve; providing an annular lock ring having longitudinally extending, circumferentially spaced ridge means on an inside periphery thereof; inserting said lock ring over said sleeve and fibrous material applied thereto, with said ridge means overlying said grooves in said sleeve to press portions of said fibrous material into said grooves; solidifying said resinous material with portions of said previously applied resinous material being positioned in said grooves to create a torsion-transmitting connection with said metal sleeve; and removing said mandrel.
Claim 13
Independent Claim
134 words
A method of forming a tubular reinforced composite shaft comprising the steps of: providing a metal sleeve having longitudinally extending, circumferentially spaced grooves on an outer periphery thereof; positioning said sleeve upon a segment of a mandrel; applying fibrous material bearing a non-solidified resinous material upon said mandrel and over said grooves in said sleeve; providing an annular lock ring having longitudinally extending, circumferentially spaced ridge means on an inside periphery thereof; inserting said lock ring over said sleeve and fibrous material applied thereto, with said ridge means overlying said grooves in said sleeve to press portions of said fibrous material into said grooves; solidifying said resinous material with portions of said previously applied resinous material being positioned in said grooves to create a torsion-transmitting connection with said metal sleeve; and removing said mandrel.
Claim 14
Dependent Claim
119 words
A tubular reinforced composite shaft comprising: a shaft body comprising a plurality of integrally bonded circumferential plies of solidified fiber reinforced resinous material; a metal sleeve mounted in at least one end of said shaft body, said sleeve including a plurality of circumferentially spaced, longitudinally extending grooves on an outer periphery of said sleeve; an annular lock ring positioned upon said sleeve and upon said plies of fibrous material disposed therearound, said lock ring including a plurality of circumferentially spaced, longitudinally extending ridge means on an inside periphery thereof; said ridge means being disposed in overlying relation to said grooves in said sleeves to press portions of said fibrous material into said grooves thereby forming a torsion-transmitting connection therebetween.
Claim 15
Dependent Claim
119 words
A tubular reinforced composite shaft comprising: a shaft body comprising a plurality of integrally bonded circumferential plies of solidified fiber reinforced resinous material; a metal sleeve mounted in at least one end of said shaft body, said sleeve including a plurality of circumferentially spaced, longitudinally extending grooves on an outer periphery of said sleeve; an annular lock ring positioned upon said sleeve and upon said plies of fibrous material disposed therearound, said lock ring including a plurality of circumferentially spaced, longitudinally extending ridge means on an inside periphery thereof; said ridge means being disposed in overlying relation to said grooves in said sleeves to press portions of said fibrous material into said grooves thereby forming a torsion-transmitting connection therebetween.
Claim 16
Dependent Claim
145 words
A hollow tubular reinforced composite shaft comprising: a shaft body comprising a plurality of integrally bonded circumferential plies of solidified fiber reinforced resinous material; a metal sleeve mounted in at least one end of said shaft body, said sleeve including a plurality of circumferentially spaced, longitudinally extending grooves on an outer periphery of said sleeve; said grooves each being inclined in a direction extending longitudinally inwardly and radially outwardly; an annular lock ring positioned upon said sleeve and upon said plies of fibrous material disposed therearound, said lock ring including a plurality of circumferentially spaced, longitudinally extending ridges on an inside periphery thereof; said ridges each being inclined in a direction extending longitudinally inwardly and radially outwardly, and being disposed in overlying relation to said grooves in said sleeves to press portions of said fibrous material into said grooves thereby forming a torsion-transmitting connection therebetween.
Claim 17
Dependent Claim
145 words
A hollow tubular reinforced composite shaft comprising: a shaft body comprising a plurality of integrally bonded circumferential plies of solidified fiber reinforced resinous material; a metal sleeve mounted in at least one end of said shaft body, said sleeve including a plurality of circumferentially spaced, longitudinally extending grooves on an outer periphery of said sleeve; said grooves each being inclined in a direction extending longitudinally inwardly and radially outwardly; an annular lock ring positioned upon said sleeve and upon said plies of fibrous material disposed therearound, said lock ring including a plurality of circumferentially spaced, longitudinally extending ridges on an inside periphery thereof; said ridges each being inclined in a direction extending longitudinally inwardly and radially outwardly, and being disposed in overlying relation to said grooves in said sleeves to press portions of said fibrous material into said grooves thereby forming a torsion-transmitting connection therebetween.
Claim 18
Dependent Claim
19 words
A shaft according to claim 12, further including means mechanically connecting said lock ring directly to said metal sleeve.
Claim 19
Dependent Claim
27 words
A shaft according to claim 13, wherein said last-named means comprises a plurality of tabs on said ring which are received in associated apertures in said sleeve.
Claim 20
Dependent Claim
57 words
A shaft according to claim 12, wherein said grooves are defined by circumferentially spaced, longitudinally extending ribs which are each inclined in a direction extending longitudinally inwardly and radially outwardly; said ridges of said lock ring being disposed between longitudinally extending, circumferentially spaced recesses which are each inclined in a direction extending longitudinally inwardly and radially outwardly.
Claim 21
Dependent Claim
35 words
A shaft according to claim 15, wherein said ribs on said sleeve are inclined at a steeper angle than said grooves such that the radial depth of each groove increases in a longitudinally inward direction.
Claim 22
Dependent Claim
95 words
A shaft according to claim 15, wherein said grooves in said sleeve are each inclined in a direction extending longitudinally inwardly and radially outwardly along a longitudinally inner extent of the sleeve, and are inclined in a direction extending longitudinally and radially inwardly along a longitudinally inner extent of the sleeve; and said ribs on said sleeve each being inclined in a direction extending longitudinally inwardly and radially outwardly along said longitudinally outer extent of said sleeve, and inclined in a direction extending longitudinally and radially inwardly along said longitudinally inner extent of said sleeve.
Claim 23
Dependent Claim
28 words
A shaft according to claim 17, wherein the inclination of said grooves along said longitudinally inner extent is steeper than the inclination of said ribs along such extent.
Claim 24
Dependent Claim
182 words
A hollow tubular reinforced composite drive shaft comprising: a shaft body comprising a plurality of integrally bonded circumferential plies of solidified fiber reinforced resinous material; a metal sleeve mounted in at least one end of said shaft body, said sleeve including a plurality of circumferentially spaced, longitudinally extending grooves and ribs on an outer periphery thereof; said grooves and ribs each being inclined in a direction extending longitudinally inwardly and radially outwardly along a longitudinally outer extent of said sleeve, and inclined in a direction extending longitudinally and radially inwardly along a longitudinally inner extent of said sleeve; an annular lock ring positioned upon said outer extent of said sleeve and upon said plies of fibrous material disposed therearound, said lock ring including a plurality of circumferentially spaced, longitudinally extending ridges and recesses on an inside periphery thereof; said ridges and recesses each being inclined in a direction extending longitudinally inwardly and radially outwardly and being disposed in overlying relation to said grooves and ribs, respectively, to press portions of said fibrous material into said grooves, thereby forming a torsion-transmitting connection therebetween.
Claim 25
Dependent Claim
182 words
A hollow tubular reinforced composite drive shaft comprising: a shaft body comprising a plurality of integrally bonded circumferential plies of solidified fiber reinforced resinous material; a metal sleeve mounted in at least one end of said shaft body, said sleeve including a plurality of circumferentially spaced, longitudinally extending grooves and ribs on an outer periphery thereof; said grooves and ribs each being inclined in a direction extending longitudinally inwardly and radially outwardly along a longitudinally outer extent of said sleeve, and inclined in a direction extending longitudinally and radially inwardly along a longitudinally inner extent of said sleeve; an annular lock ring positioned upon said outer extent of said sleeve and upon said plies of fibrous material disposed therearound, said lock ring including a plurality of circumferentially spaced, longitudinally extending ridges and recesses on an inside periphery thereof; said ridges and recesses each being inclined in a direction extending longitudinally inwardly and radially outwardly and being disposed in overlying relation to said grooves and ribs, respectively, to press portions of said fibrous material into said grooves, thereby forming a torsion-transmitting connection therebetween.
Claim 26
Dependent Claim
34 words
A drive shaft according to claim 19, wherein the inclination of said ribs is steeper than that of said grooves such that the radial depth of each groove increases in a longitudinal inward direction.
Claim 27
Dependent Claim
28 words
A drive shaft according to claim 19, wherein said lock sleeve includes a plurality of circumferentially spaced lock tabs which are received in associated apertures in said sleeve.
References Cited (Backward Citations)
US3661670A
Cited
GB1356393A
Cited
US4041599A
Cited
US4089190A
Cited
US4097626A
Cited
US4171626A
Cited
US2882072A
Cited
US3592884A
Cited
US3466895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |