Patent US3105180A successfully refreshed from Google Patents.
US3105180A
Expired / Lapsed
US
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Motor control system
Assignee: Electrons Inc
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Filing: 1960-08-18
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Granted: 1963-09-24
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Expires: 1980-08-18
Abstract
No abstract record available.
Inventors
- 👤 James H Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:42
CPC Classifications
H; H02; H02P; H02P27/00; H02P27/04; H02P27/06; H02M; H02M5/00; H02M5/40; H02M5/42; H02M5/44; H02M5/453; H02M5/458; H02M5/4585; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/162; H02M7/1623; H02M7/1626; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5383; H02M7/53846; H02M7/53862
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A SYSTEM FOR CONTROLLING THE SPEED OF AN INDUCTION MOTOR HAVING AT LEAST TWO WINDINGS, SAID SYSTEM COMPRISING INVERTER MEANS OPERATIVE TO PRODUCE AN A.C. OUTPUT VOLTAGE IN OPERATIVE PHASE RELATIONSHIP IN RESPONSE TO A D.C. INPUT VOLTAGE, SAID INVERTER MEANS BEING OPERATIVE TO VARY THE FREQUENCY OF THE OUTPUT VOLTAGE IN ACCORDANCE WITH THE LEVEL OF THE D.C. INPUT VOLTAGE AND ALSO BEING OPERATIVE SO THAT THE AMPLITUDE OF THE OUTPUT VOLTAGE IS PROPORTIONAL TO THE FREQUENCY OF THE OUTPUT VOLTAGE, MEANS ELECTRICALLY CONNECTED OPERATIVELY TO PROVIDE A D.C. INPUT VOLTAGE AT A PREDETERMINED LEVEL TO PRODUCE AN OUTPUT VOLTAGE OF A PARTICULAR FREQUENCY AND AMPLITUDE, AND MEANS FOR ELECTRICALLY CONNECTING OPERATIVELY THE OUTPUT OF SAID INVERTER MEANS TO THE WINDINGS OF THE MOTOR TO OPERATE THE MOTOR AT A SPEED IN ACCORDANCE WITH THE FREQUENCY OF THE OUTPUT VOLTAGE.
Claim 2
Independent Claim
141 words
A SYSTEM FOR CONTROLLING THE SPEED OF AN INDUCTION MOTOR HAVING AT LEAST TWO WINDINGS, SAID SYSTEM COMPRISING INVERTER MEANS OPERATIVE TO PRODUCE AN A.C. OUTPUT VOLTAGE IN OPERATIVE PHASE RELATIONSHIP IN RESPONSE TO A D.C. INPUT VOLTAGE, SAID INVERTER MEANS BEING OPERATIVE TO VARY THE FREQUENCY OF THE OUTPUT VOLTAGE IN ACCORDANCE WITH THE LEVEL OF THE D.C. INPUT VOLTAGE AND ALSO BEING OPERATIVE SO THAT THE AMPLITUDE OF THE OUTPUT VOLTAGE IS PROPORTIONAL TO THE FREQUENCY OF THE OUTPUT VOLTAGE, MEANS ELECTRICALLY CONNECTED OPERATIVELY TO PROVIDE A D.C. INPUT VOLTAGE AT A PREDETERMINED LEVEL TO PRODUCE AN OUTPUT VOLTAGE OF A PARTICULAR FREQUENCY AND AMPLITUDE, AND MEANS FOR ELECTRICALLY CONNECTING OPERATIVELY THE OUTPUT OF SAID INVERTER MEANS TO THE WINDINGS OF THE MOTOR TO OPERATE THE MOTOR AT A SPEED IN ACCORDANCE WITH THE FREQUENCY OF THE OUTPUT VOLTAGE.
References Cited (Backward Citations)
US2150572A
Cited
US2995690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |