Patent US2253025A successfully refreshed from Google Patents.
US3149487A
Expired / Lapsed
US
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Servicing tool for barrel-type locks
Assignee: Chicago Lock Co
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Filing: 1963-03-11
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Granted: 1964-09-22
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 William A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:38
CPC Classifications
E; E05; E05B; E05B19/00; E05B19/20; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/778; Y10T70/7791; Y10T70/7797
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
IN A SERVING TOOL FOR BARREL-TYPE LOCKS THAT HAVE SPRING-URGED TUMBLERS TO LOCK TO AND RELEASE THE PLUG FROM THE BARREL THEREOF, (A) AN ELONGATED BODY, (B) A FLEXIBLE FINGER MOUNTED ON SAID BODY WITH AN END THEREOF DIRECTED TOWARD THE END OF ONE OF THE LOCK TUMBLERS AND RETRACTIVELY SLIDABLE UNDER BIAS OF THE TUMBLER WHEN THE BODY IS IN KEY ENGAGEMENT WITH THE LOCK, (C) MEANS TO HOLD SPACED PORTIONS OF THE FINGER IN SLIDING ENGAGEMENT WITH THE BODY, AND (D) A FRICTION MEMBER INTERPOSED BETWEEN THE TOOL BODY AND THE FINGER INTERMEDIATE SAID FINGER-HOLDING MEANS, (E) SAID BODY HAVING A LONGITUDINAL SPLINE THEREIN AND THE FINGER BEING SLIDINGLY ENGAGED IN SAID SPLINE.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |