US3117264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel slip contrl by gradual reduction of generator excitation
Assignee: General Electric Co
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Filing: 1961-03-06
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Granted: 1964-01-07
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Russell M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/10; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A LOCOMOTIVE UNIT, A GOVERNOR-CONTROLLED PRIME MOVER, TRACTION MOTORS ADAPTED TO DRIVE THE LOCOMOTIVE WHEELS ON RAIL, A GENERATOR DRIVEN BY THE PRIME MOVER ADAPTED TO CONTROL ELECTRICAL POWER SUPPLIED TO THE TRACTION MOTORS, A GENERATOR FIELD FOR CONTROLLING EXCITATION OF THE GENERATOR, MEANS FOR DERIVING A VOLTAGE OF MAGNITUDE DETERMINING THE POWER DEMAND ON THE PRIME MOVER, MEANS FOR DETECTING LOSS OF ADHESION BETWEEN THE LOCOMOTIVE WHEELS AND RAIL, A SERIES CIRCUIT COMPRISING SAID VOLTAGE-DERIVING MEANS, A GOVERNOR-CONTROLLED VARIABLE RESISTANCE AND SAID GENERATOR FIELD; A VOLTAGE SOURCE NORMALLY OF MAGNITUDE EQUAL TO THE VOLTAGE ACROSS SAID FIELD AND ARRANGED TO DECREASE IN MAGNITUDE AT A PREDETERMINED
Claim 2
Dependent Claim
108 words
IN A LOCOMOTIVE UNIT, A GOVERNOR-CONTROLLED PRIME MOVER, TRACTION MOTORS ADAPTED TO DRIVE THE LOCOMOTIVE WHEELS ON RAIL, A GENERATOR DRIVEN BY THE PRIME MOVER ADAPTED TO CONTROL ELECTRICAL POWER SUPPLIED TO THE TRACTION MOTORS, A GENERATOR FIELD FOR CONTROLLING EXCITATION OF THE GENERATOR, MEANS FOR DERIVING A VOLTAGE OF MAGNITUDE DETERMINING THE POWER DEMAND ON THE PRIME MOVER, MEANS FOR DETECTING LOSS OF ADHESION BETWEEN THE LOCOMOTIVE WHEELS AND RAIL, A SERIES CIRCUIT COMPRISING SAID VOLTAGE-DERIVING MEANS, A GOVERNOR-CONTROLLED VARIABLE RESISTANCE AND SAID GENERATOR FIELD; A VOLTAGE SOURCE NORMALLY OF MAGNITUDE EQUAL TO THE VOLTAGE ACROSS SAID FIELD AND ARRANGED TO DECREASE IN MAGNITUDE AT A PREDETERMINED
References Cited (Backward Citations)
US2703845A
Cited
US2806149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |