US3255397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor protection
Assignee: Texas Instruments Inc
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Filing: 1962-10-29
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Granted: 1966-06-07
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Victor G Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:54
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/02; H02; H02H; H02H7/00; H02H7/08; H02H7/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A MOTOR PROTECTOR CIRCUIT FOR A MOTOR HAVING A PLURALITY OF MAIN WINDINGS, COMPRISING HEATERS CONNECTED TO AT LEAST TWO OF SAID MAIN WINDINGS RESPECTIVELY, A THERMOSTATIC SWITCH, A HOUSING FOR SAID SWITCH, EACH OF SAID HEATERS COMPRISING A RESISTANCE ELEMENT COILED AROUND SAID HOUSING AND SO CONNECTED BETWEEN ITS RESPECTIVE MAIN WINDING AND THE THERMOSTATIC SWITCH THAT THE CURRENTS FLOWING THROUGH SAID CONNECTED HEATERS ESTABLISH MAGNETIC FIELDS TENDING TO NEUTRALIZE EACH OTHER IN THE SPACE OCCUPIED BY SAID SWITCH WITHIN THE HOUSING.
Claim 2
Dependent Claim
83 words
A MOTOR PROTECTOR CIRCUIT FOR A MOTOR HAVING A PLURALITY OF MAIN WINDINGS, COMPRISING HEATERS CONNECTED TO AT LEAST TWO OF SAID MAIN WINDINGS RESPECTIVELY, A THERMOSTATIC SWITCH, A HOUSING FOR SAID SWITCH, EACH OF SAID HEATERS COMPRISING A RESISTANCE ELEMENT COILED AROUND SAID HOUSING AND SO CONNECTED BETWEEN ITS RESPECTIVE MAIN WINDING AND THE THERMOSTATIC SWITCH THAT THE CURRENTS FLOWING THROUGH SAID CONNECTED HEATERS ESTABLISH MAGNETIC FIELDS TENDING TO NEUTRALIZE EACH OTHER IN THE SPACE OCCUPIED BY SAID SWITCH WITHIN THE HOUSING.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |