US4258597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Socket wrench ejector
Assignee: Individual
•
Filing: 1979-06-25
•
Granted: 1981-03-31
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Expires: 1999-06-25
Abstract
Abstract A device for positive ejection of cylindrical socket wrenches from a retaining square-drive is disclosed consisting primarily of a lever mounted on the shaft of a typical ratchet-driven socket wrench parallel to the shaft. A flat fork in one end of the lever is placed around the square-drive at its base and under a retained socket. A fulcrum at the midpoint of the lever rests on the shaft of the wrench and the lever is retained by a spring clip surrounding both the lever and the shaft. Depression of one end of the lever raises the fork end lifting the socket from the square drive and the spring clip returns the lever to its initial position.
Inventors
- 👤 Alan H. Gelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:29
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/02; B25B13/06; B25B13/46; B25B13/461; B25B23/00; B25B23/0057
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
160 words
An ejector lever for use on a wrench having a shaft and a head housing a square socket drive, said ejector lever comprising an elongated lever having at one end a flat open-ended fork adapted to surround the square-drive at its base and under an attached socket, a fulcrum resting on the shaft of the wrench at the mid-point of the lever such that depression of the opposite lever end will lift the fork end and thereby release the socket from its detent, and means for securing the lever to the wrench shaft and returning it to initial position after actuation, said means comprising a laterally-cut retaining groove in said shaft and a spring band encircling said lever and shaft and releasably retaining said fulcrum in said groove such that said lever can be alternatively snapped out of said groove and slid axially along said shaft free of said head, or operatively positioned with said fulcrum engaged in said groove.
Claim 2
Dependent Claim
160 words
An ejector lever for use on a wrench having a shaft and a head housing a square socket drive, said ejector lever comprising an elongated lever having at one end a flat open-ended fork adapted to surround the square-drive at its base and under an attached socket, a fulcrum resting on the shaft of the wrench at the mid-point of the lever such that depression of the opposite lever end will lift the fork end and thereby release the socket from its detent, and means for securing the lever to the wrench shaft and returning it to initial position after actuation, said means comprising a laterally-cut retaining groove in said shaft and a spring band encircling said lever and shaft and releasably retaining said fulcrum in said groove such that said lever can be alternatively snapped out of said groove and slid axially along said shaft free of said head, or operatively positioned with said fulcrum engaged in said groove.
Claim 3
Dependent Claim
77 words
The device of claim 1 wherein said spring band is of the constrictive type and engages said lever at a point thereon longitudinally displaced toward said head from said fulcrum such that said spring band is triple purpose, serving to bias said fork against said head, retain said lever laterally against said shaft, and also cooperate with said groove to create a positive detent for use when longitudinally shifting said lever between its operative and passive modes.
References Cited (Backward Citations)
US3138984A
Cited
US3815451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |