Patent JPS63100249A successfully refreshed from Google Patents.
US3621685A
Expired / Lapsed
US
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Cylindrical lock
Assignee: Individual
•
Filing: 1969-10-01
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Granted: 1971-11-23
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Expires: 1989-10-01
Abstract
Abstract A CYLINDRICAL LOCK HAVING A DEADBOLT AND A GUARDED LATCHBOLT, THE DEADBOLT BEING ACTUATED BY TURN BUTTON MEANS ON THE INSIDE AND KEY MEANS ON THE OUTSIDE. THE DEADBOLT PROJECTS A SUBSTANTIAL DISTANCE BEYOND THE LATCHBOLT WHEN BOTH ARE IN FULLY PROJECTED POSITION PROVIDING AN ADDED SAFETY FEATURE. ALSO PROVIDED ARE A PICK-PROOF CYLINDER UNIT AND A SPINNING KNOB ARRANGEMENT FOR FRUSTRATING ENTRY BY FORCING THE OUTSIDE KNOB.
Inventors
- 👤 Thomas J Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:54
CPC Classifications
E; E05; E05B; E05B59/00; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0843; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5226; Y10T70/5372; Y10T70/5381; Y10T70/70; Y10T70/7441; Y10T70/7915; Y10T70/7949
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |