US3117448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition indicating device
Assignee: Manostat Corp
•
Filing: 1957-08-21
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Granted: 1964-01-14
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Expires: 1977-08-21
Abstract
No abstract record available.
Inventors
- 👤 Gilmont Roger
- 👤 Anton Aaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:13
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; G01K7/20; G01K7/21; G01K1/00; G01K1/02; G01K1/022
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A RESISTANCE THERMOMETER COMPRISING IN AN ELECTRIC CIRCUIT A TEMPERATURE SENSING MEANS WHICH DEPENDS ON ITS ELECTRICAL RESISTANCE FOR ITS OPERATION AND WHOSE RESISTANCE IS A QUADRATIC FUNCTION OF TEMPERATURE AND IN WHICH THE CONSTANT AND THE LINEAR COEFFICIENT ARE POSITIVE AND THE QUADRATIC COEFFICIENT IS NEGATIVE; A RESISTANCE NETWORK COMPOSED ONLY OF ELECTRICAL ELEMENTS WHOSE RESISTANCE IS LINEAR WITH LENGTH AND WHICH NETWORK HAS TERMINAL PROPERTIES WHICH YIELD THE SAME QUADRATIC FUNCTION AT AT LEAST ONE OF ITS SAID ELEMENTS; VARIABLE RESISTANCE MEANS ELECTRICALLY CONNECTED TO AND ADAPTED TO ADJUST SAID NETWORK UNTIL ITS SAID FUNCTION IS PROPORTIONAL TO THE SAID TEMPERATURE SENSING MEANS; SAID TEMPERATURE SENSING MEANS AND SAID NETWORK BEING COOPERATIVELY COMBINED IN ELECTRICAL CONNEC-
References Cited (Backward Citations)
US950513A
Cited
US1573850A
Cited
US1776901A
Cited
US2541857A
Cited
US2649715A
Cited
US2653308A
Cited
US2659234A
Cited
US2799758A
Cited
US2800015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |