US3208248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wafer tumbler key system
Assignee: Schlage Lock Co LLC
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Filing: 1963-02-06
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Granted: 1965-09-28
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Expires: 1983-02-06
Abstract
No abstract record available.
Inventors
- 👤 John A Tornoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:46
CPC Classifications
E; E05; E05B; E05B29/00; E05B29/004; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7667; Y10T70/7689; Y10T70/7695; Y10T70/7729; Y10T70/7734
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN A WAFER TUMBLER LOCK WHICH IS COMBINATED TO BE OPERABLE BY A TEMPORARY KEY, SAID LOCK HAVING A ROW OF KEY ACTUATED WAFER TUMBLERS, THE IMPROVEMENT, COMPRISING A WAFER TUMBLER WHICH IS MOVED TO UNLOCKING POSITION BY A TEMPORARY KEY CONTACTING A DEFORMABLE PART OF THE TUMBLER, SAID PART BEING PERMANENTLY DEFORMED BY THE INSERTION OF A SECOND KEY TO A POSITION WHERE THE WAFER TUMBLER IS NO LONGER MOVED TO THE UNLOCKING POSITION BY THE TEMPORARY KEY.
Claim 2
Dependent Claim
79 words
IN A WAFER TUMBLER LOCK WHICH IS COMBINATED TO BE OPERABLE BY A TEMPORARY KEY, SAID LOCK HAVING A ROW OF KEY ACTUATED WAFER TUMBLERS, THE IMPROVEMENT, COMPRISING A WAFER TUMBLER WHICH IS MOVED TO UNLOCKING POSITION BY A TEMPORARY KEY CONTACTING A DEFORMABLE PART OF THE TUMBLER, SAID PART BEING PERMANENTLY DEFORMED BY THE INSERTION OF A SECOND KEY TO A POSITION WHERE THE WAFER TUMBLER IS NO LONGER MOVED TO THE UNLOCKING POSITION BY THE TEMPORARY KEY.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |