US3274470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushless motor means
Assignee: Motors Liquidation Co
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Filing: 1963-12-05
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Granted: 1966-09-20
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Expires: 1983-12-05
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Gershen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
ENERGIZING ARRANGEMENT FROM A DIRECT CURRENT SUPPLY LINE SOURCE FOR D.-C. TO D.-C. CONVERTOR AS WELL AS D.-C. TO A.-C. INVERTER MEANS, COMPRISING, ELECTROMAGNETIC CORE MEANS SHARED FOR WINDING PORTIONS INCLUDING A MAIN WINDING PORTION, A PAIR OF FEEDBACK WINDING PORTIONS AND AN ADDITIONAL OUTPUT WINDING PORTION ALL FIXED IN LOCATION, A PAIR OF SEMI-CONDUCTOR MEANS EACH HAVING BASE, COLLECTOR AND EMITTER PORTIONS THEREOF, EACH FEEDBACK WINDING PORTION HAVING CONNECTION BETWEEN BASE AND EMITTER PORTIONS OF RESPECTIVE SEMI-CONDUCTOR MEANS, AN EMITTER PORTION OF ONE SEMI-CONDUCTOR MEANS BEING CONNECTED TO A COLLECTOR OF THE OTHER SEMI-CONDUCTOR MEANS IN A COMMON JUNCTURE ALSO SHARED BY CAPACITANCE MEANS AT LEAST IN SERIES WITH SAID MAIN WINDING PORTION WHICH IS CONNECTED TO A CONNECTION OF ONE SIDE OF SUPPLY LINE AN EMITTER PORTION OF ONE OF SAID SEMI-CONDUCTOR MEANS WHICH A REMAINING SIDE OF SUPPLY LINE SOURCE IS CONNECTED TO COLLECTOR PORTION OF SAID OTHER SEMI-CONDUCTOR MEANS, AND A PAIR OF RECTIFIER MEANS CONNECTED TO OPPOSITE ENDS OF SAID ADDITIONAL WINDING PORTION ASLO HAVING A TAP CONNECTION THERETO FOR DIRECT CURRENT DIRECTLY FROM OPPOSITE ENDS OF SAID ADDITIONAL WINDING PORTION.
Claim 2
Dependent Claim
186 words
ENERGIZING ARRANGEMENT FROM A DIRECT CURRENT SUPPLY LINE SOURCE FOR D.-C. TO D.-C. CONVERTOR AS WELL AS D.-C. TO A.-C. INVERTER MEANS, COMPRISING, ELECTROMAGNETIC CORE MEANS SHARED FOR WINDING PORTIONS INCLUDING A MAIN WINDING PORTION, A PAIR OF FEEDBACK WINDING PORTIONS AND AN ADDITIONAL OUTPUT WINDING PORTION ALL FIXED IN LOCATION, A PAIR OF SEMI-CONDUCTOR MEANS EACH HAVING BASE, COLLECTOR AND EMITTER PORTIONS THEREOF, EACH FEEDBACK WINDING PORTION HAVING CONNECTION BETWEEN BASE AND EMITTER PORTIONS OF RESPECTIVE SEMI-CONDUCTOR MEANS, AN EMITTER PORTION OF ONE SEMI-CONDUCTOR MEANS BEING CONNECTED TO A COLLECTOR OF THE OTHER SEMI-CONDUCTOR MEANS IN A COMMON JUNCTURE ALSO SHARED BY CAPACITANCE MEANS AT LEAST IN SERIES WITH SAID MAIN WINDING PORTION WHICH IS CONNECTED TO A CONNECTION OF ONE SIDE OF SUPPLY LINE AN EMITTER PORTION OF ONE OF SAID SEMI-CONDUCTOR MEANS WHICH A REMAINING SIDE OF SUPPLY LINE SOURCE IS CONNECTED TO COLLECTOR PORTION OF SAID OTHER SEMI-CONDUCTOR MEANS, AND A PAIR OF RECTIFIER MEANS CONNECTED TO OPPOSITE ENDS OF SAID ADDITIONAL WINDING PORTION ASLO HAVING A TAP CONNECTION THERETO FOR DIRECT CURRENT DIRECTLY FROM OPPOSITE ENDS OF SAID ADDITIONAL WINDING PORTION.
References Cited (Backward Citations)
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US2814769A
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US3221270A
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US2965856A
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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 |