Patent US3851983A successfully refreshed from Google Patents.
US3851983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: Individual
•
Filing: 1973-02-20
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Granted: 1974-12-03
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Expires: 1993-02-20
Abstract
Abstract A coupling for detachably connecting a driven shaft to a drive shaft where the coupling comprises a sleeve-like member having diametrical slots from both ends thereof which may be independently tightened about each shaft.
Inventors
- 👤 K Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:44
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/0406; F16B7/0426; F16D; F16D1/00; F16D1/02; F16D1/04; 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: 4
Claim 1
Independent Claim
116 words
For use in combination with a drive and a driven shaft, a coupling comprising a one-piece sleeve member having a continuous bore therethrough, a pair of slots defined in said sleeve member at each end thereof and extending longitudinally inwardly of said sleeve member, the slots of each pair terminating in said sleeve short of each other, said pairs of slots permitting each end of said coupling to be tightened on a shaft independent of the other end, threaded screw holes extending through said coupling and bridging each of said slots, a screw received in each of said holes, said screws being effective to clamp the slotted ends of said coupling about each of said shafts.
Claim 2
Dependent Claim
116 words
For use in combination with a drive and a driven shaft, a coupling comprising a one-piece sleeve member having a continuous bore therethrough, a pair of slots defined in said sleeve member at each end thereof and extending longitudinally inwardly of said sleeve member, the slots of each pair terminating in said sleeve short of each other, said pairs of slots permitting each end of said coupling to be tightened on a shaft independent of the other end, threaded screw holes extending through said coupling and bridging each of said slots, a screw received in each of said holes, said screws being effective to clamp the slotted ends of said coupling about each of said shafts.
Claim 3
Dependent Claim
21 words
The combination of claim 1 wherein said shafts have tangential grooves defined in the periphery thereof which partially receive said screws.
Claim 4
Dependent Claim
41 words
The combination of claim 1 wherein said sleeve member has at least one opening in the wall thereof intermediate the interior end of the slots, the ends of the shafts in said sleeve member residing below said at least one opening.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |