US3233160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-phase, pole-changing motor
Assignee: National Research Development Corp UK
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Filing: 1962-08-14
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Granted: 1966-02-01
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Expires: 1982-08-14
Abstract
No abstract record available.
Inventors
- 👤 Rawcliffe Gordon Hindle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/28; H02K17/00; H02K17/02; H02K17/04; H02K17/06; H02K17/12; H02K17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A SIGNLE-PHASE, POLE-CHANGING MOTOR, PROVIDING FIRST AND SECOND POLE-NUMBERS IN RATIO OTHER THAN 2:1, THE COMBINATION OF A PRIMARY WINDING HAVING TWO WINDING PARTS, HEREIN DESIGNATED WINDINGS A AND B, SAID WINDINGS A AND B BOTH BEING DIVIDED INTO FIRST AND SECOND HALVES, A STARTING WINDING, HEREIN DESIGNATED WINDING C, SAID THREE WINDINGS A, B AND C BEING ARRANGED AROUND SAID PRIMARY WINDING CIRCUMFERENCE WITH PHASE-BANDS THEREOF LOCATED IN THE SEQUENCE A, C, B, REPEATED FOR EACH POLE OF SAID FIRST POLE-NUMBER, MEANS FOR SUPPLYING SINGLEPHASE ALTERNATING CURRENT TO SAID WINDINGS A AND B, MEANS FOR SUPPLYING PHASE-DISPLACED SINGLE-PHASE ALTERNATING CURRENT TO WINDING C DURING MOTOR STARTING AND MEANS FOR REVERSING IN CURRENT-CARRYING SENSE EITHER ONE OF SAID FIRST AND SECOND HALVES OF SAID WINDINGS A AND B DURING RUNNING AT SAID SECOND POLE-NUMBER.
Claim 2
Dependent Claim
135 words
IN A SIGNLE-PHASE, POLE-CHANGING MOTOR, PROVIDING FIRST AND SECOND POLE-NUMBERS IN RATIO OTHER THAN 2:1, THE COMBINATION OF A PRIMARY WINDING HAVING TWO WINDING PARTS, HEREIN DESIGNATED WINDINGS A AND B, SAID WINDINGS A AND B BOTH BEING DIVIDED INTO FIRST AND SECOND HALVES, A STARTING WINDING, HEREIN DESIGNATED WINDING C, SAID THREE WINDINGS A, B AND C BEING ARRANGED AROUND SAID PRIMARY WINDING CIRCUMFERENCE WITH PHASE-BANDS THEREOF LOCATED IN THE SEQUENCE A, C, B, REPEATED FOR EACH POLE OF SAID FIRST POLE-NUMBER, MEANS FOR SUPPLYING SINGLEPHASE ALTERNATING CURRENT TO SAID WINDINGS A AND B, MEANS FOR SUPPLYING PHASE-DISPLACED SINGLE-PHASE ALTERNATING CURRENT TO WINDING C DURING MOTOR STARTING AND MEANS FOR REVERSING IN CURRENT-CARRYING SENSE EITHER ONE OF SAID FIRST AND SECOND HALVES OF SAID WINDINGS A AND B DURING RUNNING AT SAID SECOND POLE-NUMBER.
References Cited (Backward Citations)
US2959721A
Cited
US3070734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |