Patent US3393540A successfully refreshed from Google Patents.
US3393540A
Expired / Lapsed
US
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Safety lock switch
Assignee: Individual
•
Filing: 1966-10-31
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Granted: 1968-07-23
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Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 Rink George
- 👤 Clayton R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:48
CPC Classifications
E; E05; E05B; E05B45/00; E05B45/06; E05B45/0605; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5889
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A SWITCH OPERATING DEVICE, COMPRISING: A KEY LOCK CYLINDER HAVING A KEY SLOT RECEPTIVE OF A KEY THEREWITHIN; A SLIDER DISPOSED NEAR THE FRONT END OF THE LOCK CYLINDER AND RECIPROCAL NORMAL THERETO, AN ELECTRICAL SWITCH DISPOSED FOR ACTUATION BY SAID SLIDER, MEANS FOR BIASING SAID SLIDER RELATIVE TO SAID KEY SLOT AND FOR ACTIVATION RELATIVE TO SAID SWITCH UPON ROTATION OF A KEY IN SAID SLOT,
Claim 2
Dependent Claim
67 words
A SWITCH OPERATING DEVICE, COMPRISING: A KEY LOCK CYLINDER HAVING A KEY SLOT RECEPTIVE OF A KEY THEREWITHIN; A SLIDER DISPOSED NEAR THE FRONT END OF THE LOCK CYLINDER AND RECIPROCAL NORMAL THERETO, AN ELECTRICAL SWITCH DISPOSED FOR ACTUATION BY SAID SLIDER, MEANS FOR BIASING SAID SLIDER RELATIVE TO SAID KEY SLOT AND FOR ACTIVATION RELATIVE TO SAID SWITCH UPON ROTATION OF A KEY IN SAID SLOT,
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |