US3293893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pin tumbler lock
Assignee: Individual
•
Filing: 1965-04-08
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Granted: 1966-12-27
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Expires: 1985-04-08
Abstract
No abstract record available.
Inventors
- 👤 Chesler Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:57
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/005; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7446; Y10T70/7463; Y10T70/7469; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7689; Y10T70/7701; Y10T70/7729; Y10T70/774; Y10T70/7746; Y10T70/778; Y10T70/7791; Y10T70/7915; Y10T70/7949
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
153 words
IN A PIN TUMBLE LOCK HAVING A CYLINDR BODY AND A PLUG HAVING A KEY SLOT AND ROTATIONALLY FITTED IN SAID BODY, A PLURALITY OF RADIAL BORES EXTENDING FROM SAID KEY SLOT IN THE PLUG AND INTO THE CYLINDER BODY PAST A BREAK LINE THAT COINCIDES WITH THE AREA OF ROTATIONAL INTERFIT OF THE PLUG AND CYLINDR OF SAID BODY, A SPRING-BIASED PIN TUMBLER IN AT LEAST ONE OF SAID BORES COMPRISING: (A) A CHANGE PIN PROVIDED WITH A BREAK-OFF EXTENSION. THE LATTER BEING PROVIDED ON THE END OF THE CHANGE PIN THAT IS DIRECTED TOWARD THE KEY SLOT, (B) AND A HARDENED KEY-LIKE TOOL INSERTABLE IN THE KEY SLOT OF THE PLUG AND HAVING A NOTCH INTO WHICH THE EXTENSION IS DIRECTED UNDER THE BIAS ON THE TUMBLER, SAID EXTENSION BEING DISPOSED ENTIRELY WITHIN SAID KEY SLOT, (C) SAID TOOL, UPON RETRACTION FROM THE PLUG, REMOVING THE EXTENSION FROM THE CHANGE PIN.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |