US3079886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire detector device
Assignee: The Eastern Co
•
Filing: 1961-11-14
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Granted: 1963-03-05
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Expires: 1981-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jr James W Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:05
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A SELF-CONTAINED TEMPERATURE SENSITIVE SIGNALLING DEVICE OF THE TYPE HAVING A CYLINDER CONTAINING A SUPPLY OF VAPORIZABLE FLUID UNDER PRESSURE SUCH AS DICHLORODIFLUOROMETHANE THEREIN, AND AN AUDIBLE SIGNALLING DEVICE, THE IMPROVEMENT WHICH COMPRISES A HEAT COLLECTOR DISC HAVING A PLUG RECEIVING RECESS AND A PLUG OF FUSIBLE MATERIAL IN SAID RECESS AND MEANS LOCATING SAID DISC BETWEEN SAID CYLINDER AND SAID SIGNALLING DEVICE AND INSULATING SAID DISC FROM THE CONTAINER AND FROM THE SAID SIGNALLING DEVICE WHEREBY SAID FUSIBLE PLUG IS MELTED BY HEAT COLLECTED BY SAID HEAT COLLECTOR DISC.
Claim 2
Dependent Claim
91 words
IN A SELF-CONTAINED TEMPERATURE SENSITIVE SIGNALLING DEVICE OF THE TYPE HAVING A CYLINDER CONTAINING A SUPPLY OF VAPORIZABLE FLUID UNDER PRESSURE SUCH AS DICHLORODIFLUOROMETHANE THEREIN, AND AN AUDIBLE SIGNALLING DEVICE, THE IMPROVEMENT WHICH COMPRISES A HEAT COLLECTOR DISC HAVING A PLUG RECEIVING RECESS AND A PLUG OF FUSIBLE MATERIAL IN SAID RECESS AND MEANS LOCATING SAID DISC BETWEEN SAID CYLINDER AND SAID SIGNALLING DEVICE AND INSULATING SAID DISC FROM THE CONTAINER AND FROM THE SAID SIGNALLING DEVICE WHEREBY SAID FUSIBLE PLUG IS MELTED BY HEAT COLLECTED BY SAID HEAT COLLECTOR DISC.
References Cited (Backward Citations)
US2649752A
Cited
US2777416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |