US3195121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heat detection
Assignee: Individual
•
Filing: 1960-02-29
•
Granted: 1965-07-13
•
Expires: 1980-02-29
Abstract
No abstract record available.
Inventors
- 👤 Jr John E Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
CPC Classifications
A; A62; A62C; A62C3/00; A62C3/07; A62C3/08; B; B82; B82Y; B82Y30/00; G; G08; G08B; G08B17/00; G08B17/04; G08B17/06; G08B17/10; G08B17/11; G08B17/113; H; H01; H01H; H01H35/00; H01H35/24; H01H35/34; H01H35/346; H01H37/00; H01H37/02; H01H37/32; H01H37/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A CRITICAL-TEMPERATURE DETECTION SYSTEM COMPRISING A PLURALITY OF GENERALLY FILAMENTARY ELECTRICALLY CONDUCTIVE ENCLOSURES OF EXTENDED LENGTH; MEANS IN EACH SAID ENCLOSURE RESPONSIVE TO HEAT FOR INCREASING THE PRESSURE WITHIN THAT SAID ENCLOSURE BY A SUBSTANTIAL AMOUNT; A PLURALITY OF ELECTRICAL CIRCUITS, EACH EMPLOYING A SAID ENCLOSURE AS A PORTION THEREOF AND INCORPORATING A WARNING DEVICE, AN ELECTRICAL SWITCH, AND AN IMPEDANCE IN PARALLEL WITH SAID SWITCH; A CORRESPONDING PLURALITY OF PRESSUREACTUATED MEANS FOR ACTUATING EACH SAID SWITCH IN RESPONSE TO THE PRESSURE IN THE SAID ENCLOSURE THAT IS ASSOCIATED WITH THAT SWITCH, ALL SAID CIRCUITS BEING JOINED IN PARALLEL
Claim 2
Dependent Claim
99 words
A CRITICAL-TEMPERATURE DETECTION SYSTEM COMPRISING A PLURALITY OF GENERALLY FILAMENTARY ELECTRICALLY CONDUCTIVE ENCLOSURES OF EXTENDED LENGTH; MEANS IN EACH SAID ENCLOSURE RESPONSIVE TO HEAT FOR INCREASING THE PRESSURE WITHIN THAT SAID ENCLOSURE BY A SUBSTANTIAL AMOUNT; A PLURALITY OF ELECTRICAL CIRCUITS, EACH EMPLOYING A SAID ENCLOSURE AS A PORTION THEREOF AND INCORPORATING A WARNING DEVICE, AN ELECTRICAL SWITCH, AND AN IMPEDANCE IN PARALLEL WITH SAID SWITCH; A CORRESPONDING PLURALITY OF PRESSUREACTUATED MEANS FOR ACTUATING EACH SAID SWITCH IN RESPONSE TO THE PRESSURE IN THE SAID ENCLOSURE THAT IS ASSOCIATED WITH THAT SWITCH, ALL SAID CIRCUITS BEING JOINED IN PARALLEL
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |