US3263147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled differential auxiliary commutator winding
Assignee: Westinghouse Electric Corp
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Filing: 1963-06-07
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Granted: 1966-07-26
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Max J Robinett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:59
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/40; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A VARIABLE SPEED DIRECT CURRENT MOTOR INCLUDING AN ARMATURE, A SHUNT TYPE FIELD WINDING, FIELD WINDING EXCITATION CIRCUIT MEANS FOR VARYING THE EXCITATION OF SAID SHUNT TYPE FIELD WINDING OVER A CONSIDERABLE RANGE, A COMPENSATING WINDING, A COMMUTATING WINDING, ARMATURE CIRCUIT MEANS INCLUDING ENERGIZING MEANS CONNECTING SAID ARMATURE, SAID COMPENSATING WINDING AND SAID COMMUTATING WINDING IN SERIES, A CUMULATIVE AUXILIARY COMMUNATING WINDING, MEANS FOR ENERGIZING THE CUMULATIVE AUXILIARY COMMUTATING WINDING FROM THE EXCITATION CIRCUIT MEANS OF THE SHUNT TYPE FIELD WINDING, A DIFFERENTIAL AUXILIARY COMMUTATING WINDING, AND MEANS INCLUDING SATURABLE MAGNETIC MEANS OPERATIVELY CONNECTED TO THE FIELD WINDING CIRCUIT MEANS AND TO THE ARMATURE CIRCUIT MEANS AND RESPONSIVE TO CHANGES IN CURRENT IN BOTH THE FIELD WINDING AND THE ARMATURE FOR VARIABLY EXCITING THE DIFFERENTIAL AUXILIARY COMMUTATING WINDING.
Claim 2
Dependent Claim
128 words
A VARIABLE SPEED DIRECT CURRENT MOTOR INCLUDING AN ARMATURE, A SHUNT TYPE FIELD WINDING, FIELD WINDING EXCITATION CIRCUIT MEANS FOR VARYING THE EXCITATION OF SAID SHUNT TYPE FIELD WINDING OVER A CONSIDERABLE RANGE, A COMPENSATING WINDING, A COMMUTATING WINDING, ARMATURE CIRCUIT MEANS INCLUDING ENERGIZING MEANS CONNECTING SAID ARMATURE, SAID COMPENSATING WINDING AND SAID COMMUTATING WINDING IN SERIES, A CUMULATIVE AUXILIARY COMMUNATING WINDING, MEANS FOR ENERGIZING THE CUMULATIVE AUXILIARY COMMUTATING WINDING FROM THE EXCITATION CIRCUIT MEANS OF THE SHUNT TYPE FIELD WINDING, A DIFFERENTIAL AUXILIARY COMMUTATING WINDING, AND MEANS INCLUDING SATURABLE MAGNETIC MEANS OPERATIVELY CONNECTED TO THE FIELD WINDING CIRCUIT MEANS AND TO THE ARMATURE CIRCUIT MEANS AND RESPONSIVE TO CHANGES IN CURRENT IN BOTH THE FIELD WINDING AND THE ARMATURE FOR VARIABLY EXCITING THE DIFFERENTIAL AUXILIARY COMMUTATING WINDING.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |