Patent US3109975A successfully refreshed from Google Patents.
US3109975A
Expired / Lapsed
US
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Tap changer motor control system with thermal time delay relay
Assignee: Allis Chalmers Corp
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Filing: 1960-09-20
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Granted: 1963-11-05
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Expires: 1980-09-20
Abstract
No abstract record available.
Inventors
- 👤 Julius E Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:06
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/14; G05F1/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A CONTROL FOR A VOLTAGE REGULATOR HAVING A DEVICE THAT IS MOVABLE TO ADJUST A VOLTAGE AND HAVING A MOTOR FOR MOVING THE DEVICE, COMPRISING, A THERMAL TIME DELAY RELAY HAVING A HEATER AND HAVING A SWITCH RESPONSIVE TO SAID HEATER TO OPERATE AFTER A TIME DELAY, A VOLTAGE SENSOR FOR ENERGIZING SAID HEATER IN RESPONSE TO AN UNDERSIRABLE VOLTAGE CONDITION, MOTOR OPERATING RESPONSIVE TO SAID HEATER RESPONSIVE SWITCH AFTER A TIME DELAY TO OPERATE SAID MOTOR IN A DIRECTION TO CORRECT THE VOLTAGE CONDITION, A HEATER CONTROL SWITCH RESPONSIVE TO SAID MOTOR OPERATING MEANS TO DEENERGIZE SAID HEATER AT THE END OF THE TIME DELAY, AND MEANS OPERABLE ON THE ENERGIZATION OF SAID MOTOR BY SAID MOTOR OPERATING MEANS TO CONNECT SAID MOTOR OPERATING MEANS INDEPENDENTLY OF SAID TIME DELAY RELAY TO BE RESPONSIVE TO SAID VOLTAGE SENSOR TO OPERATE THE MOTOR TO CORRECT THE VOLTAGE CONDITION AND OPERABLE ON THE CORRECTION OF THE VOLTAGE CONDITION TO CONNECT SAID MOTOR OPERATING MEANS TO BE CONTROLLED BY SAID TIME DELAY RELAY.
Claim 2
Dependent Claim
171 words
A CONTROL FOR A VOLTAGE REGULATOR HAVING A DEVICE THAT IS MOVABLE TO ADJUST A VOLTAGE AND HAVING A MOTOR FOR MOVING THE DEVICE, COMPRISING, A THERMAL TIME DELAY RELAY HAVING A HEATER AND HAVING A SWITCH RESPONSIVE TO SAID HEATER TO OPERATE AFTER A TIME DELAY, A VOLTAGE SENSOR FOR ENERGIZING SAID HEATER IN RESPONSE TO AN UNDERSIRABLE VOLTAGE CONDITION, MOTOR OPERATING RESPONSIVE TO SAID HEATER RESPONSIVE SWITCH AFTER A TIME DELAY TO OPERATE SAID MOTOR IN A DIRECTION TO CORRECT THE VOLTAGE CONDITION, A HEATER CONTROL SWITCH RESPONSIVE TO SAID MOTOR OPERATING MEANS TO DEENERGIZE SAID HEATER AT THE END OF THE TIME DELAY, AND MEANS OPERABLE ON THE ENERGIZATION OF SAID MOTOR BY SAID MOTOR OPERATING MEANS TO CONNECT SAID MOTOR OPERATING MEANS INDEPENDENTLY OF SAID TIME DELAY RELAY TO BE RESPONSIVE TO SAID VOLTAGE SENSOR TO OPERATE THE MOTOR TO CORRECT THE VOLTAGE CONDITION AND OPERABLE ON THE CORRECTION OF THE VOLTAGE CONDITION TO CONNECT SAID MOTOR OPERATING MEANS TO BE CONTROLLED BY SAID TIME DELAY RELAY.
References Cited (Backward Citations)
US2713141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |