Patent US5140877A successfully refreshed from Google Patents.
US5140877A
Expired / Lapsed
US
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Hexagonal wrench
Assignee: Individual
•
Filing: 1992-02-03
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Granted: 1992-08-25
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Expires: 2012-02-03
Abstract
Abstract A hexagonal wrench is provided with three equally spaced grooves of varying depth adjacent an end of the wrench to define three flat side ball-shaped members, the end ball of which is adapted to be inserted in a complementary hexagonal socket of a screw-threaded member. The grooves vary successively in depth with the groove furthest from the end being the shallowest groove so as to provide increased resistance to breakage. A modified hexagonal wrench is comprised of a stub shank of hexagonal cross-sectional configuration secured to an end of a flat elongated strip to facilitate operation of the wrench in areas of small clearance.
Inventors
- 👤 John Sloan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:35
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; B25B15/008; B25B13/00; B25B13/48; B25B13/481
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
A hexagonal wrench comprising an elongated six-sided shank and a plurality of equally spaced grooves disposed adjacent one end of said shank to define a plurality of rounded portions of equal axial extent with said grooves successively decreasing in depth with the groove furthest from said end being the shallowest groove.
Claim 2
Dependent Claim
51 words
A hexagonal wrench comprising an elongated six-sided shank and a plurality of equally spaced grooves disposed adjacent one end of said shank to define a plurality of rounded portions of equal axial extent with said grooves successively decreasing in depth with the groove furthest from said end being the shallowest groove.
Claim 3
Dependent Claim
26 words
A hexagonal wrench as set forth in claim 1, further comprising an identical set of grooves and balls disposed adjacent an opposite end of said shank.
Claim 4
Dependent Claim
39 words
A hexagonal wrench as set forth in claim 2, further comprising detachable handle means adapted to be clamped to said shank intermediate the ends thereof to provide a gripping means for the application of turning torque to the wrench.
References Cited (Backward Citations)
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Cited
US2323018A
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US2605665A
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US2662437A
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US4817475A
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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) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |