US3324464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire alarms
Assignee: Electronic Assistance Corp
•
Filing: 1964-05-11
•
Granted: 1967-06-06
•
Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Edwards Robert
- 👤 William A Wheatley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:18
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN ALARM COMPRISING A BATTERY HAVING A CARBON ELECTRODE, AN ELECTRICAL SIGNALING DEVICE, A ZINC CASING FOR SAID SIGNALING DEVICE FORMING ANOTHER ELECTRODE OF SAID BATTERY, A CONTAINER OF THIN RUPTURABLE MATERIAL IN SAID CASING, AN ELECTROLYTE IN SAID CONTAINER FOR ACTIVATING SAID BATTERY, MEANS CONNECTING SAID ELECTRODES TO SAID SIGNALING DEVICE AND MEANS IN SAID CASING RESPONSIVE TO A PREDETERMINED TEMPERATURE FOR RUPTURING SAID CONTAINER TO DISCHARGE SAID ELECTROLYTE INTO CONTACT WITH SAID ELECTRODES TO SUPPLY ELECTRICAL ENERGY TO SAID SIGNALING DEVICE.
Claim 2
Dependent Claim
83 words
AN ALARM COMPRISING A BATTERY HAVING A CARBON ELECTRODE, AN ELECTRICAL SIGNALING DEVICE, A ZINC CASING FOR SAID SIGNALING DEVICE FORMING ANOTHER ELECTRODE OF SAID BATTERY, A CONTAINER OF THIN RUPTURABLE MATERIAL IN SAID CASING, AN ELECTROLYTE IN SAID CONTAINER FOR ACTIVATING SAID BATTERY, MEANS CONNECTING SAID ELECTRODES TO SAID SIGNALING DEVICE AND MEANS IN SAID CASING RESPONSIVE TO A PREDETERMINED TEMPERATURE FOR RUPTURING SAID CONTAINER TO DISCHARGE SAID ELECTROLYTE INTO CONTACT WITH SAID ELECTRODES TO SUPPLY ELECTRICAL ENERGY TO SAID SIGNALING DEVICE.
References Cited (Backward Citations)
US1218847A
Cited
US2989737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |