Patent US3274472A successfully refreshed from Google Patents.
US3274472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two speed induction motor
Assignee: General Electric Co
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Filing: 1963-10-03
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Granted: 1966-09-20
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Expires: 1983-10-03
Abstract
No abstract record available.
Inventors
- 👤 John P Slattery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:38
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A INDUCTION MOTOR, A STATOR COMPRISING A SINGLE PHASE WINDING CONSISTING OF FIRST AND SECOND SERIES-CONNECTED COIL SECTIONS MUTUALLY COUPLED TO EACH OTHER, A CAPACITOR, SWITCH MEANS MOVABLE TO EITHER OF TWO OPERATIVE POSITIONS FOR CONNECTING SAID FIRST SECTION TO A SOURCE ALTERNATING CURRENT POWER AND FOR CONNECTING SAID CAPACITOR ACROSS SAID SECOND SECTION IN ONE POSITION AND TO SERIES CONNECT BOTH OF SAID SECTIONS TO SAID SOURCE OF POWER AND SHORT SAID CAPACITOR IN SAID SECOND POSITION WHEREBY SAID MOTOR STARTS AND RUNS AT A HIGH SPEED WITH POWER FACTOR CORRECTION WHEN SAID SWITCH IS IN ITS FIRST PORTION AND AT A LOW SPEED WHEN SAID SWITCH IS IN ITS SECOND POSITION.
Claim 2
Dependent Claim
114 words
IN A INDUCTION MOTOR, A STATOR COMPRISING A SINGLE PHASE WINDING CONSISTING OF FIRST AND SECOND SERIES-CONNECTED COIL SECTIONS MUTUALLY COUPLED TO EACH OTHER, A CAPACITOR, SWITCH MEANS MOVABLE TO EITHER OF TWO OPERATIVE POSITIONS FOR CONNECTING SAID FIRST SECTION TO A SOURCE ALTERNATING CURRENT POWER AND FOR CONNECTING SAID CAPACITOR ACROSS SAID SECOND SECTION IN ONE POSITION AND TO SERIES CONNECT BOTH OF SAID SECTIONS TO SAID SOURCE OF POWER AND SHORT SAID CAPACITOR IN SAID SECOND POSITION WHEREBY SAID MOTOR STARTS AND RUNS AT A HIGH SPEED WITH POWER FACTOR CORRECTION WHEN SAID SWITCH IS IN ITS FIRST PORTION AND AT A LOW SPEED WHEN SAID SWITCH IS IN ITS SECOND POSITION.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |