US3587261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plugs for key operated lock mechanisms
Assignee: Ingersoll Locks Ltd
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Filing: 1970-01-23
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Granted: 1971-06-28
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Expires: 1990-01-23
Abstract
Abstract A KEY OPERATED PLUG ASSEMBLY FOR A LOCKING MECHANISM THE PLUG BEING ADAPTED TO BE PIVOTALLY MOUNTED IN A BODY, WHICH PLUG COMPRISES BODY ENGAGING MEANS TO PREVENT PIVOTAL MOVEMENT OF THE PLUG WITHIN THE BODY, THE BODY ENGAGING MEANS BEING RENDERED INOPERATIVE BY THE INSERTION INTO THE PLUG OF AN APPROPRIATE KEY, A FACE ELEMENT HAVING THEREIN A KEY RECEIVING OPENING AND BEING CONNECTED TO THE REMAINDER OF THE PLUG BY MEANS OF A COLLAPSIBLE CONNECTION, THE ARRANGEMENT BEING SUCH THAT WHEN MORE THAN A PREDETERMINED FORCE IS APPLIED TO THE FACE ELEMENT THE COLLAPSIBLE CONNECTION FAILS SO THAT THE FACE ELEMENT ROTATES RELATIVE TO THE REMAINDER OF THE PLUG.
Inventors
- 👤 Daniel Victor Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:50
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; E05B67/24; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/459; Y10T70/487; Y10T70/489; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7627; Y10T70/7633; 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |