US3686895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damped shaft coupling
Assignee: Motors Liquidation Co
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Filing: 1971-03-19
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Granted: 1972-08-29
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Expires: 1991-03-19
Abstract
Abstract Two shafts are splined together for transmission of torque, one being supported by the other. To damp vibration in the shafting which causes wear, an O-ring lodged between overlapping portions of the shafts adjacent the splines is compressed radially by them to the extent of about one-fourth of its original radial thickness.
Inventors
- 👤 Sydney Eugene Easley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:40
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/02; F16D3/06; F16F; F16F15/00; F16F15/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
A rotatable assembly comprising, in combination, a first shaft rotatably mounted, a second shaft rotatably mounted coaxially with the first shaft, the shafts having mutually overlapping portions including parts of noncircular cross-section so as to transfer torque between the shafts, one shaft being supported by the other at the overlapping portions, and an elastomeric 0-ring mounted and contained between the overlapping portions having its radial thickness limited by boundIng surfaces of the shafts to less than the radial thickness approved for fluid sealing applications of the said 0-ring, the 0-ring being provided for damping vibration during rotation of the shafts.
Claim 2
Dependent Claim
100 words
A rotatable assembly comprising, in combination, a first shaft rotatably mounted, a second shaft rotatably mounted coaxially with the first shaft, the shafts having mutually overlapping portions including parts of noncircular cross-section so as to transfer torque between the shafts, one shaft being supported by the other at the overlapping portions, and an elastomeric 0-ring mounted and contained between the overlapping portions having its radial thickness limited by boundIng surfaces of the shafts to less than the radial thickness approved for fluid sealing applications of the said 0-ring, the 0-ring being provided for damping vibration during rotation of the shafts.
Claim 3
Dependent Claim
95 words
A rotatable assembly comprising, in combination, a first shaft rotatably mounted, a second shaft rotatably mounted coaxially with the first shaft, the shafts having mutually overlapping portions including splines operative to transfer torque between the shafts, one shaft being supported by the other at the overlapping portions, and an elastomeric 0-ring mounted and contained between the overlapping portions having its radial thickness limited by bounding surfaces of the shafts to less than five-sixths of the uncompressed radial thickness of the said 0-ring, the 0-ring being effective to damp vibration generated during rotation of the shafts.
Claim 4
Dependent Claim
95 words
A rotatable assembly comprising, in combination, a first shaft rotatably mounted, a second shaft rotatably mounted coaxially with the first shaft, the shafts having mutually overlapping portions including splines operative to transfer torque between the shafts, one shaft being supported by the other at the overlapping portions, and an elastomeric 0-ring mounted and contained between the overlapping portions having its radial thickness limited by bounding surfaces of the shafts to less than five-sixths of the uncompressed radial thickness of the said 0-ring, the 0-ring being effective to damp vibration generated during rotation of the 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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |