Patent US3253625A successfully refreshed from Google Patents.
US3253625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driving bits for non-removable screw fasteners
Assignee: General American Transportation Corp
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Filing: 1965-09-03
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Granted: 1966-05-31
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Expires: 1985-09-03
Abstract
No abstract record available.
Inventors
- 👤 Oestereicher Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; F; F16; F16B; F16B23/00; F16B23/0076; Y; Y10; Y10S; Y10S411/00; Y10S411/91; Y10S411/911; Y10S411/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A BIT FOR DRIVING A THREADED FASTENER COMPRISING A LONGITUDINALLY EXTENDING SHANK TERMINATING IN A FLAT FRONT FACE DISPOSED IN A PLANE SUBSTANTIALLY NORMAL TO THE AXIS OF SAID SHANK AND PROVIDED WITH A SUBSTANTIALLY CIRCULAR BOUNDARY, TWO LONGITUDINALLY EXTENDING AND DIAMETRICALLY OPPOSED FLUTES PROVIDED IN SAID SHANK AND EXTENDING FORWARDLY INTO INTERSECTING RELATION WITH SAID FRONT FACE, EACH OF SAID FLUTES INCLUDING LEADING AND TRAILING SURFACES RESPECTIVELY FORMING AT THE INTERSECTION WITH SAID FRONT FACE LEADING AND TRAILING SHOULDERS, SAID FRONT FACE HAVING X AND Y AXES OF SYMMETRY DISPOSED AT RIGHT ANGLES TO EACH OTHER AND INTERSECTING EACH OTHER AT THE LONGITUDINAL AXIS OF SAID SHANK, ONE OF SAID LEADING SHOULDERS LYING ALONG A LINE POSITIONED ON ONE SIDE OF SAID Y AXIS
Claim 2
Dependent Claim
125 words
A BIT FOR DRIVING A THREADED FASTENER COMPRISING A LONGITUDINALLY EXTENDING SHANK TERMINATING IN A FLAT FRONT FACE DISPOSED IN A PLANE SUBSTANTIALLY NORMAL TO THE AXIS OF SAID SHANK AND PROVIDED WITH A SUBSTANTIALLY CIRCULAR BOUNDARY, TWO LONGITUDINALLY EXTENDING AND DIAMETRICALLY OPPOSED FLUTES PROVIDED IN SAID SHANK AND EXTENDING FORWARDLY INTO INTERSECTING RELATION WITH SAID FRONT FACE, EACH OF SAID FLUTES INCLUDING LEADING AND TRAILING SURFACES RESPECTIVELY FORMING AT THE INTERSECTION WITH SAID FRONT FACE LEADING AND TRAILING SHOULDERS, SAID FRONT FACE HAVING X AND Y AXES OF SYMMETRY DISPOSED AT RIGHT ANGLES TO EACH OTHER AND INTERSECTING EACH OTHER AT THE LONGITUDINAL AXIS OF SAID SHANK, ONE OF SAID LEADING SHOULDERS LYING ALONG A LINE POSITIONED ON ONE SIDE OF SAID Y AXIS
References Cited (Backward Citations)
US1956963A
Cited
CH201705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |