Patent US3116267A successfully refreshed from Google Patents.
Patent US4248062A successfully refreshed from Google Patents.
US4248062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive shaft assembly and method for making same
Assignee: Shakespeare and Company
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Filing: 1979-10-05
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Granted: 1981-02-03
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Expires: 1999-10-05
Abstract
Abstract A composite drive shaft having a hollow tubular, multi-layered fiber reinforced plastic shaft portion (11) with a metallic sleeve (13) inserted in and bonded thereto at least at one end, said sleeve (13) having universal joint connector means (12).
Inventors
- 👤 Philippe H. McLain
- 👤 Robert J. Shrontz
- 👤 Dominick Tringali
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
F; F16; F16C; F16C3/00; F16C3/02; F16C3/026; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/083; B29C70/085; B29C70/10; B29C70/16; B29C70/20; B29C70/202; B29C70/68; B29C70/86; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/38; F16D3/382; F16D3/387; B29L; B29L2023/00; F16C2326/00; F16C2326/01; F16C2326/06; F16D1/00; F16D1/06; F16D1/064; F16D1/068
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
143 words
A drive shaft assembly comprising: a tubular, fiber-reinforced plastic shaft portion having layers of oppositely angled resin-impregnated helical fibers at 25°-65° to the longitudinal shaft axis and at least one layer having substantially longitudinal fibers forming a laminate, at least one layer of said laminate having an interior bonding surface, a metallic sleeve received within at least one end of said laminate and having an exterior bonding surface bonded to said interior bonding surface; said shaft portion having an inner spiral layer of closely wound fibers at 80°-90° to the longitudinal shaft axis, said layer terminating at the inner edge of said sleeve; whereby said layer of longitudinal fibers provides flexural rigidity to the laminate, said oppositely angled layers provide torsional strength while allowing radial contraction thereof to grip the sleeve, and said inner spiral layer provides additional hoop strength to the laminate.
Claim 2
Dependent Claim
143 words
A drive shaft assembly comprising: a tubular, fiber-reinforced plastic shaft portion having layers of oppositely angled resin-impregnated helical fibers at 25°-65° to the longitudinal shaft axis and at least one layer having substantially longitudinal fibers forming a laminate, at least one layer of said laminate having an interior bonding surface, a metallic sleeve received within at least one end of said laminate and having an exterior bonding surface bonded to said interior bonding surface; said shaft portion having an inner spiral layer of closely wound fibers at 80°-90° to the longitudinal shaft axis, said layer terminating at the inner edge of said sleeve; whereby said layer of longitudinal fibers provides flexural rigidity to the laminate, said oppositely angled layers provide torsional strength while allowing radial contraction thereof to grip the sleeve, and said inner spiral layer provides additional hoop strength to the laminate.
Claim 3
Dependent Claim
41 words
A drive shaft assembly as defined in claim 1, wherein the laminate is provided with a layer of glass cloth having oppositely angled fibers bonded to the exterior surface of said sleeve and to said interior bonding surface of said laminate.
Claim 4
Dependent Claim
47 words
A drive shaft assembly as defined in claim 2, wherein the layer of fiber glass cloth tapers in thickness from the outer to the inner edge of said sleeve and extends inwardly beyond the inner edge of the sleeve in overlapping relation with said inner spiral layer.
Claim 5
Dependent Claim
42 words
A drive shaft assembly as defined in claim 3, wherein the fiber glass cloth comprises a plurality of wraps around said sleeve, the number of wraps decreasing progressively from the outer edge of the sleeve and terminating slightly beyond its inner edge.
Claim 6
Dependent Claim
20 words
A drive shaft assembly as defined in claim 1, wherein the laminate has at least one layer of longitudinal fibers.
Claim 7
Dependent Claim
33 words
A drive shaft assembly as defined in claim 5, wherein the laminate is provided with an inner layer of glass cloth having oppositely angled fibers bonded to the exterior surface of said sleeve.
Claim 8
Dependent Claim
47 words
A drive shaft assembly as defined in claim 6, wherein the layer of fiber glass cloth tapers in thickness from the outer to the inner edge of said sleeve and extends inwardly beyond the inner edge of the sleeve in overlapping relation with said inner spiral layer.
Claim 9
Dependent Claim
42 words
A drive shaft assembly as defined in claim 7, wherein the fiber glass cloth comprises a plurality of wraps around said sleeve, the number of wraps decreasing progressively from the outer edge of the sleeve and terminating slightly beyond its inner edge.
Claim 10
Dependent Claim
29 words
A drive shaft assembly as defined in claim 1, wherein said shaft portion has an outer spiral layer of closely wound fibers at 80°-90° to the longitudinal shaft axis.
Claim 11
Dependent Claim
33 words
A drive shaft assembly as defined in claim 9, wherein the laminate is provided with an inner layer of glass cloth having oppositely angled fibers bonded to the exterior surface of said sleeve.
Claim 12
Dependent Claim
47 words
A drive shaft assembly as defined in claim 10, wherein the layer of fiber glass cloth tapers in thickness from the outer to the inner edge of said sleeve and extends inwardly beyond the inner edge of the sleeve in overlapping relation with said inner spiral layer.
Claim 13
Dependent Claim
42 words
A drive shaft assembly as defined in claim 11, wherein the fiber glass cloth comprises a plurality of wraps around said sleeve, the number of wraps decreasing progressively from the outer edge of the sleeve and terminating slightly beyond its inner edge.
Claim 14
Independent Claim
154 words
The method of making a drive shaft assembly having a tubular fiber-reinforced plastic shaft portion with a metallic sleeve portion extending into at least one end and bonded thereto, comprising the steps of: coating the outer surface of a metallic sleeve with a bonding resin, heating the coated sleeve to cure the resin, mounting the coated sleeve on a cylindrical mandrel extending axially beyond the sleeve, applying over the exposed portion of the mandrel a layer of spirally wrapped resin-impregnated fibers at an angle of 80°-90° to the axis of the mandrel, applying over the wrapped mandrel and sleeve portion at least two layers of resin-impregnated oppositely angled helically wrapped fibers at an angle of 25°-65° to the axis of the mandrel, applying over the wrapped mandrel and sleeve portion at least one layer of resin-impregnated fibers extending substantially longitudinally of the mandrel, and heating the assembly until the resin contained therein is cured.
Claim 15
Independent Claim
154 words
The method of making a drive shaft assembly having a tubular fiber-reinforced plastic shaft portion with a metallic sleeve portion extending into at least one end and bonded thereto, comprising the steps of: coating the outer surface of a metallic sleeve with a bonding resin, heating the coated sleeve to cure the resin, mounting the coated sleeve on a cylindrical mandrel extending axially beyond the sleeve, applying over the exposed portion of the mandrel a layer of spirally wrapped resin-impregnated fibers at an angle of 80°-90° to the axis of the mandrel, applying over the wrapped mandrel and sleeve portion at least two layers of resin-impregnated oppositely angled helically wrapped fibers at an angle of 25°-65° to the axis of the mandrel, applying over the wrapped mandrel and sleeve portion at least one layer of resin-impregnated fibers extending substantially longitudinally of the mandrel, and heating the assembly until the resin contained therein is cured.
Claim 16
Dependent Claim
33 words
The method as defined in claim 13, wherein a layer of glass cloth having oppositely angled fibers is bonded to the sleeve prior to applying a layer of resin-impregnated helically wound fibers thereover.
Claim 17
Dependent Claim
28 words
The method as defined in claim 14, wherein a layer of spirally wrapped resin-impregnated fibers is applied over the outer layer of fibers previously applied over the mandrel.
Claim 18
Dependent Claim
45 words
The method as defined in claim 15, wherein the layer of glass cloth is tapered in thickness from the outer to the inner edge of the sleeve and extends inwardly beyond the inner edge of the sleeve in overlapping relation with said inner spiral layer.
Claim 19
Dependent Claim
23 words
The method as defined in claim 13, wherein an outer layer of spirally wrapped resin-impregnated fibers at 80°-90° is applied over the assembly.
Claim 20
Dependent Claim
33 words
The method as defined in claim 17, wherein a layer of glass cloth having oppositely angled fibers is bonded to the sleeve prior to applying a layer of resin-impregnated helically wound fibers thereover.
Claim 21
Dependent Claim
28 words
The method as defined in claim 18, wherein a layer of spirally wrapped resin-impregnated fibers is applied over the outer layer of fibers previously applied over the mandrel.
Claim 22
Dependent Claim
45 words
The method as defined in claim 19, wherein the layer of glass cloth is tapered in thickness from the outer to the inner edge of the sleeve and extends inwardly beyond the inner edge of the sleeve in overlapping relation with said inner spiral layer.
Claim 23
Independent Claim
189 words
The method of making a drive shaft assembly having a tubular fiber-reinforced plastic shaft portion with a metallic sleeve portion extending into at least one end of the plastic shaft portion and bonded thereto, comprising the steps of: coating the outer surface of a metallic sleeve with a bonding resin, heating the coated sleeve to cure the resin, mounting the coated sleeve on a cylindrical mandrel extending axially beyond the sleeve, applying over the exposed portion of the mandrel a layer of spirally wrapped resin-impregnated fibers at an angle of 80°-90° to the axis of the mandrel, applying over the wrapped mandrel and sleeve a laminate having layers of resin-impregnated oppositely angled helically disposed fibers at angles of 25°-65° to the axis of the mandrel and at least one layer of resin-impregnated fibers extending substantially longitudinally of said mandrel, at least one layer of said laminate having an interior bonding surface contacting said coated sleeve, applying over said laminate an outer layer of spirally wrapped resin-impregnated fibers at an angle of 80°-90° to the axis of said mandrel, and heating the assembly until the resin contained therein is cured.
Claim 24
Independent Claim
189 words
The method of making a drive shaft assembly having a tubular fiber-reinforced plastic shaft portion with a metallic sleeve portion extending into at least one end of the plastic shaft portion and bonded thereto, comprising the steps of: coating the outer surface of a metallic sleeve with a bonding resin, heating the coated sleeve to cure the resin, mounting the coated sleeve on a cylindrical mandrel extending axially beyond the sleeve, applying over the exposed portion of the mandrel a layer of spirally wrapped resin-impregnated fibers at an angle of 80°-90° to the axis of the mandrel, applying over the wrapped mandrel and sleeve a laminate having layers of resin-impregnated oppositely angled helically disposed fibers at angles of 25°-65° to the axis of the mandrel and at least one layer of resin-impregnated fibers extending substantially longitudinally of said mandrel, at least one layer of said laminate having an interior bonding surface contacting said coated sleeve, applying over said laminate an outer layer of spirally wrapped resin-impregnated fibers at an angle of 80°-90° to the axis of said mandrel, and heating the assembly until the resin contained therein is cured.
Claim 25
Dependent Claim
27 words
The method as defined in claim 21, wherein a layer of glass cloth having oppositely angled fibers is applied to the sleeve prior to applying said laminate.
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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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |