US3296510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural motor traction control by field control
Assignee: Westinghouse Electric Corp
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Filing: 1963-06-25
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Granted: 1967-01-03
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Expires: 1983-06-25
Abstract
No abstract record available.
Inventors
- 👤 John J Stamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:49
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/34; B; B60; B60L; B60L50/00; B60L50/10; B60L50/11; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/70; Y02T10/7072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A CONTROL SYSTEM FOR ELECTRIC TRACTION MOTORS, SAID SYSTEM INCLUDING A DIRECT CURRENT GENERATOR, AT LEAST ONE PAIR OF MOTORS CONNECTED TO THE GENERATOR, EACH MOTOR HAVING AN ARMATURE AND A SERIES-CONNECTED FIELD WINDING, A SEPARATE SOURCE OF DIRECT CURRENT EXCITATION FOR EACH OF SAID FIELD WINDINGS, AND MEANS FOR CONTROLLING
Claim 2
Dependent Claim
51 words
A CONTROL SYSTEM FOR ELECTRIC TRACTION MOTORS, SAID SYSTEM INCLUDING A DIRECT CURRENT GENERATOR, AT LEAST ONE PAIR OF MOTORS CONNECTED TO THE GENERATOR, EACH MOTOR HAVING AN ARMATURE AND A SERIES-CONNECTED FIELD WINDING, A SEPARATE SOURCE OF DIRECT CURRENT EXCITATION FOR EACH OF SAID FIELD WINDINGS, AND MEANS FOR CONTROLLING
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |