US3131270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated snap action device
Assignee: Tung Sol Electric Inc
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Filing: 1960-10-25
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Granted: 1964-04-28
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Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 Edward A Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:38
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/10; H01H61/00; H01H61/06; H01H61/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A SNAP ACTING DEVICE HAVING A VANE CONSTRAINED IN ONE CURRENT CONTROLLING POSITION BY TENSION OF AN EXPANSIBLE PULL MEANS AND ADAPTED UPON EXPANSION OF THE PULL MEANS WITH CURRENT THERETHROUGH TO SNAP THROUGH A NEUTRAL EQUILIBRIUM POSITION INTO A SECOND CURRENT CONTROLLING POSITION, THE IMPROVEMENT COMPRISING A RELATIVELY FIXED MEMBER, AN AMBIENT TEMPERATURE RESPONSIVE COMPENSATING ELEMENT COUPLING SAID PULL MEANS TO SAID FIXED MEMBER, SAID ELEMENT, UPON INCREASE IN AMBIENT TEMPERATURE INCREASING THE TENSION IN THE PULL MEANS, SAID ELEMENT BEING OF BIMETALLIC MATERIAL AND BEING WELDED AT SPACED POINTS OF SAID FIXED MEMBER AND TO THE CENTER OF SAID PULL MEANS.
Claim 2
Dependent Claim
104 words
IN A SNAP ACTING DEVICE HAVING A VANE CONSTRAINED IN ONE CURRENT CONTROLLING POSITION BY TENSION OF AN EXPANSIBLE PULL MEANS AND ADAPTED UPON EXPANSION OF THE PULL MEANS WITH CURRENT THERETHROUGH TO SNAP THROUGH A NEUTRAL EQUILIBRIUM POSITION INTO A SECOND CURRENT CONTROLLING POSITION, THE IMPROVEMENT COMPRISING A RELATIVELY FIXED MEMBER, AN AMBIENT TEMPERATURE RESPONSIVE COMPENSATING ELEMENT COUPLING SAID PULL MEANS TO SAID FIXED MEMBER, SAID ELEMENT, UPON INCREASE IN AMBIENT TEMPERATURE INCREASING THE TENSION IN THE PULL MEANS, SAID ELEMENT BEING OF BIMETALLIC MATERIAL AND BEING WELDED AT SPACED POINTS OF SAID FIXED MEMBER AND TO THE CENTER OF SAID PULL MEANS.
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |