Patent US3133568A successfully refreshed from Google Patents.
US3133568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bit end of tool for driving screw fastener
Assignee: Reed and Prince Manufacturing Co
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Filing: 1962-04-02
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Granted: 1964-05-19
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Reed Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:39
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/002; Y; Y10; Y10S; Y10S81/00; Y10S81/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A DRIVING TOOL FOR TURNING RECESS HEAD SCREW FASTENERS SUCH AS SCREWS, SAID TOOL HAVING A SHANK HAVING A BIT END, SAID BIT END COMPRISING A PLURALITY OF VANES EXTENDING SUBSTANTIALLY RADIALLY OF THE SHANK AND EACH HAVING SIDE FACES, SAID VANES CONVERGING TO A POINT AT THEIR FREE ENDS, AT LEAST SOME OF SAID SIDE FACES OF THE VANES BEING FORMED WITH PARALLEL SCORE LINES EXTENDING APPROXIMATELY AT RIGHT ANGLES TO THE AXIS OF THE SHANK, SAID BIT END HAVING BEEN SUBJECTED TO HEAT TREATMENT AND SHOT PEENING AFTER FORMATION OF SAID SCORE LINES.
Claim 2
Dependent Claim
95 words
A DRIVING TOOL FOR TURNING RECESS HEAD SCREW FASTENERS SUCH AS SCREWS, SAID TOOL HAVING A SHANK HAVING A BIT END, SAID BIT END COMPRISING A PLURALITY OF VANES EXTENDING SUBSTANTIALLY RADIALLY OF THE SHANK AND EACH HAVING SIDE FACES, SAID VANES CONVERGING TO A POINT AT THEIR FREE ENDS, AT LEAST SOME OF SAID SIDE FACES OF THE VANES BEING FORMED WITH PARALLEL SCORE LINES EXTENDING APPROXIMATELY AT RIGHT ANGLES TO THE AXIS OF THE SHANK, SAID BIT END HAVING BEEN SUBJECTED TO HEAT TREATMENT AND SHOT PEENING AFTER FORMATION OF SAID SCORE LINES.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |