US3808918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic keeper accessory for wrench sockets
Assignee: Individual
•
Filing: 1973-09-04
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Granted: 1974-05-07
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Expires: 1993-09-04
Abstract
Abstract A keeper accessory designed to have an interference fit with the interior of a wrench socket and effective to hold a fastener part captive in the socket while being maneuvered into and out of assembled position. The keeper is blanked from magnetized, elastomeric stock with at least a portion of its perimeter bevelled to better accommodate an interference press fit with the interior sidewall of closely related sizes of wrench sockets.
Inventors
- 👤 H Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:19
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/02; B25B23/08; B25B23/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
103 words
A keeper accessory for installation in a wrench socket to hold an unattached fastener captive therein, said accessory comprising a plaque of permanently magnetized elastomeric material blanked from stock of uniform thickness having flat parallel opposed faces and having a bevelled edge along at least a portion of its periphery, said keeper including the bevelled edge thereof being sized to have an interference fit transversely of the interior of a wrench socket, and which bevelled edge is upset and deformed by pressure contact with the interior socket sidewall as said plaque is forcibly installed crosswise of the inner end of a wrench socket.
Claim 2
Dependent Claim
103 words
A keeper accessory for installation in a wrench socket to hold an unattached fastener captive therein, said accessory comprising a plaque of permanently magnetized elastomeric material blanked from stock of uniform thickness having flat parallel opposed faces and having a bevelled edge along at least a portion of its periphery, said keeper including the bevelled edge thereof being sized to have an interference fit transversely of the interior of a wrench socket, and which bevelled edge is upset and deformed by pressure contact with the interior socket sidewall as said plaque is forcibly installed crosswise of the inner end of a wrench socket.
Claim 3
Dependent Claim
18 words
A keeper as defined in claim 1 characterized in that said keeper is longer than it is wide.
Claim 4
Dependent Claim
15 words
A keeper as defined in claim 1 characterized in that said keeper is generally rectangular.
Claim 5
Dependent Claim
18 words
A keeper as defined in claim 3 characterized in that said keeper is bevelled across one end thereof.
Claim 6
Dependent Claim
29 words
A keeper as defined in claim 3 characterized in that said keeper as one transverse end lying in a plane generally perpendicular to the parallel faces of said keeper.
Claim 7
Dependent Claim
42 words
A keeper as defined in claim 1 characterized in that the same is generally circular and in that a major portion of the perimeter thereof is bevelled and lies at other than an angle of 90* to the opposite planar faces thereof.
Claim 8
Dependent Claim
41 words
A keeper as defined in claim 1 characterized in that the same is permanently magnetized to provide a plurality of separate magnetized zones having the poles thereof aligned with one another in parallel rows between the opposite faces of said keeper.
Claim 9
Dependent Claim
25 words
A keeper as defined in claim 7 characterized in that said magnetized zones have the poles thereof terminating on the same face of the keeper.
Claim 10
Dependent Claim
24 words
A keeper as defined in claim 8 characterized in that one face thereof has a distinctive appearance readily distinguishing it from the other face.
Claim 11
Dependent Claim
16 words
A keeper as defined in claim 1 characterized in that said keeper is hexagonal in shape.
Claim 12
Dependent Claim
18 words
A keeper as defined in claim 10 characterized in that a plurality of said hexagonal edges are bevelled.
Claim 13
Dependent Claim
33 words
A keeper as defined in claim 10 characterized in that all of said hexagonal faces are bevelled and sized to have an interference fit with the interior sidewalls of a hexagonal wrench socket.
Claim 14
Dependent Claim
63 words
A keeper as defined in claim 1 characterized in that the edge portion thereof is bevelled acutely to one face of said keeper and in that the material from which said keeper is blanked is readily deformable along said bevelled edges whereby said keeper is adapted to have an interference fit with the interior sidewalls of wrench sockets of different closely related sizes.
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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |