US3284593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm lock for doors having a key operated magnetic switch control
Assignee: General Alarm Corp
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Filing: 1965-04-28
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Granted: 1966-11-08
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Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Hawkins Paul Maddison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:01
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; E05B63/0021; E05B45/00; E05B45/06; E05B45/08; E05B45/083; E05B45/086; H; H01; H01H; H01H36/00; H01H36/0073; Y; Y10; Y10T; Y10T292/00; Y10T292/54; Y10T292/564; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN APPARATUS FOR ACTUATING AN ALARM UPON MOVEMENT OF A CLOSURE MEMBER RELATIVE TO A STATIONARY MEMBER, THE COMBINATION WHICH COMPRISES, A MAGNET MOUNTED ON ONE OF SAID MEMBERS AND MEANS FORMED OF MAGNETIC MATERIAL SUPPORTED ON THE OTHER OF SAID MEMBERS ADJACENT SAID MAGNET WHEN THE CLOSURE MEMBER IS IN CLOSED POSITION, A CARRIER MOUNTED SO AS TO BE HELD IN ONE POSITION BY THE ACTION OF SAID MAGNET WHEN ADJACENT SAID MEANS FORMED OF MAGNETIC MATERIAL AND RELEASED FOR MOVEMENT TO A SECOND POSITION WHEN SAID MEANS FORMED OF MAGNETIC MATERIAL IS BEYOND THE FIELD OF ATTRACTION OF SAID MAGNET DUE TO RELATIVE MOVEMENT THEREBETWEEN, A SWITCH ASSOCIATED WITH SAID CARRIER AND OPERABLE TO ACTUATE AN ALARM CIRCUIT BETWEEN OPERATIVE AND INOPERATIVE CONDITIONS IS RESPONSE TO SAID MOVEMENT OF THE CARRIER, AND
Claim 2
Dependent Claim
134 words
IN APPARATUS FOR ACTUATING AN ALARM UPON MOVEMENT OF A CLOSURE MEMBER RELATIVE TO A STATIONARY MEMBER, THE COMBINATION WHICH COMPRISES, A MAGNET MOUNTED ON ONE OF SAID MEMBERS AND MEANS FORMED OF MAGNETIC MATERIAL SUPPORTED ON THE OTHER OF SAID MEMBERS ADJACENT SAID MAGNET WHEN THE CLOSURE MEMBER IS IN CLOSED POSITION, A CARRIER MOUNTED SO AS TO BE HELD IN ONE POSITION BY THE ACTION OF SAID MAGNET WHEN ADJACENT SAID MEANS FORMED OF MAGNETIC MATERIAL AND RELEASED FOR MOVEMENT TO A SECOND POSITION WHEN SAID MEANS FORMED OF MAGNETIC MATERIAL IS BEYOND THE FIELD OF ATTRACTION OF SAID MAGNET DUE TO RELATIVE MOVEMENT THEREBETWEEN, A SWITCH ASSOCIATED WITH SAID CARRIER AND OPERABLE TO ACTUATE AN ALARM CIRCUIT BETWEEN OPERATIVE AND INOPERATIVE CONDITIONS IS RESPONSE TO SAID MOVEMENT OF THE CARRIER, AND
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |