US3588858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety alarm system
Assignee: Atlantic Richfield Co
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Filing: 1968-06-07
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Granted: 1971-06-28
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Expires: 1988-06-07
Abstract
Abstract A SAFETY ALARM SYSTEM DESIGNED FOR USE BY INDIVIDUALS WORKING ALONE CONSISTING OF A RADIO TRANSMITTER WHICH IS ACTIVATED BY A POSITION-SENSITIVE SWITCH AND A RADIO RECEIVER WHICH ACTIVATES AN ALARM MEANS WHICH INDICATES THAT THE PERSON HAS BEEN INJURED OR OTHERWISE INCAPCITATED. THE SWITCH IS SELECTED TO ACTIVATE AT ANY POSITION WHICH A PERSON WOULD NORMALLY ASSUME IF HE WERE INJURED OR INCAPACITATED, SUCH AS A PRONE POSITION. THE TRANSMITTER CAN ALSO BE EQUIPPED WITH A MANUAL SWITCH IN COMBINATION WITH A POSITION-SENSITIVE SWITCH SO THAT IT CAN ALSO BE USED AS AN ALARM SYSTEM EVEN WHEN THE INDIVIDUAL IS NOT INCAPACITATED
Inventors
- 👤 Thomas P Demuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:20
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/02; G08B21/04
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 |