Patent US4442838A successfully refreshed from Google Patents.
Patent US3100827A successfully refreshed from Google Patents.
US3100827A
Expired / Lapsed
US
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Thermally responsive switch
Assignee: General Electric Co
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Filing: 1960-06-03
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Granted: 1963-08-13
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Expires: 1980-06-03
Abstract
No abstract record available.
Inventors
- 👤 Grimshaw Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:32
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/52; H01H37/54; H01H37/5418; H01H37/5427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A THERMALLY RESPONSIVE SNAP ACTING ELECTRIC SWITCH COMPRISING A HOUSING OF WAFER-LIKE CONFIGURATION FORMED BY A PAIR OF RELATIVELY THIN CONDUCTIVE STRIPS, SAID STRIPS EACH HAVING A RECESS THEREIN THEREBY TO FORM A SWITCH CAVITY, FIXED CONTACT MEANS POSITIONED ON THE INNER SURFACE OF ONE OF SAID STRIPS WITHIN SAID CAVITY, A SUPPORT SECURED TO SAID HOUSING BETWEEN SAID STRIPS AND EXTENDING INTO SAID SWITCH CAVITY, A SNAP ACTING DISC SUPPORTED IN CANTILEVER FASHION BY SAID SUPPORT BETWEEN A FREE INNER END OF SAID SUPPORT AND SAID HOUSING AND DISPOSED IN SAID CAVITY, SAID DISC HAVING A SUBSTANTIALLY ANNULAR CONFIGURATION AND CONSTRUCTED OF BIMETALLIC MATERIAL, A MOVABLE CONTACT MEANS POSITIONED ON A FREE PERIPHERAL PORTION OF SAID ANNULAR BIMETAL DISC FOR COOPERATION WITH SAID FIXED CONTACT MEANS, A SCREW IN THREADED ENGAGEMENT WITH ONE OF SAID STRIPS, EXTENDING THROUGH SAID ANNULAR DISC, AND ACTING UPON THE FREE INNER END OF SAID SUPPORT FOR SELECTIVELY VARYING A PREDETERMINABLE TEMPERATURE AT WHICH SAID DISC WILL ACTUATE SAID SWITCH CONTACTS, FIRST
Claim 2
Dependent Claim
168 words
A THERMALLY RESPONSIVE SNAP ACTING ELECTRIC SWITCH COMPRISING A HOUSING OF WAFER-LIKE CONFIGURATION FORMED BY A PAIR OF RELATIVELY THIN CONDUCTIVE STRIPS, SAID STRIPS EACH HAVING A RECESS THEREIN THEREBY TO FORM A SWITCH CAVITY, FIXED CONTACT MEANS POSITIONED ON THE INNER SURFACE OF ONE OF SAID STRIPS WITHIN SAID CAVITY, A SUPPORT SECURED TO SAID HOUSING BETWEEN SAID STRIPS AND EXTENDING INTO SAID SWITCH CAVITY, A SNAP ACTING DISC SUPPORTED IN CANTILEVER FASHION BY SAID SUPPORT BETWEEN A FREE INNER END OF SAID SUPPORT AND SAID HOUSING AND DISPOSED IN SAID CAVITY, SAID DISC HAVING A SUBSTANTIALLY ANNULAR CONFIGURATION AND CONSTRUCTED OF BIMETALLIC MATERIAL, A MOVABLE CONTACT MEANS POSITIONED ON A FREE PERIPHERAL PORTION OF SAID ANNULAR BIMETAL DISC FOR COOPERATION WITH SAID FIXED CONTACT MEANS, A SCREW IN THREADED ENGAGEMENT WITH ONE OF SAID STRIPS, EXTENDING THROUGH SAID ANNULAR DISC, AND ACTING UPON THE FREE INNER END OF SAID SUPPORT FOR SELECTIVELY VARYING A PREDETERMINABLE TEMPERATURE AT WHICH SAID DISC WILL ACTUATE SAID SWITCH CONTACTS, FIRST
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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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |