US3209206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overtemperature protected apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1962-02-09
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Granted: 1965-09-28
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Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 John J Courtin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:08
CPC Classifications
H; H02; H02H; H02H5/00; H02H5/04; H02H5/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AN OVERTEMPERATURE PROTECTIVE SYSTEM FOR ELECTRICAL APPARATUS CONNECTED TO EXTERNAL CIRCUIT CONDUCTORS THROUGH A CONTACTOR, SAID PROTECTIVE SYSTEM INCLUDING A PLURALITY OF TEMPERATURE SENSITIVE RESISTANCE ELEMENTS, SAID RESISANCE ELEMENTS BEING ELECTRICALLY CONNECTED TOGETHER, AND MEANS RESPONSIVE TO CHANGE IN RESISTANCE OF ONE OF THE RESISTANCE ELEMENTS FOR EFFECTING DEENERGIZATION OF SAID APPARATUS, AT LEAST ONE OF THE RESISTANCE ELEMENTS BEING DISPOSED IN HEAT TRANSFER RELATION WITH SAID APPARATUS AND AT LEAST ONE OF THE RESISTANCE ELEMENTS BEING IN HEAT TRANSFER RELATION WITH BOTH SAID CONTACTOR AND ONE OF SAID EXTERNAL CIRCUIT CONDUCTORS.
Claim 2
Dependent Claim
92 words
AN OVERTEMPERATURE PROTECTIVE SYSTEM FOR ELECTRICAL APPARATUS CONNECTED TO EXTERNAL CIRCUIT CONDUCTORS THROUGH A CONTACTOR, SAID PROTECTIVE SYSTEM INCLUDING A PLURALITY OF TEMPERATURE SENSITIVE RESISTANCE ELEMENTS, SAID RESISANCE ELEMENTS BEING ELECTRICALLY CONNECTED TOGETHER, AND MEANS RESPONSIVE TO CHANGE IN RESISTANCE OF ONE OF THE RESISTANCE ELEMENTS FOR EFFECTING DEENERGIZATION OF SAID APPARATUS, AT LEAST ONE OF THE RESISTANCE ELEMENTS BEING DISPOSED IN HEAT TRANSFER RELATION WITH SAID APPARATUS AND AT LEAST ONE OF THE RESISTANCE ELEMENTS BEING IN HEAT TRANSFER RELATION WITH BOTH SAID CONTACTOR AND ONE OF SAID EXTERNAL CIRCUIT CONDUCTORS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |