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Fred G. Turnbull
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Scotia, NY, US
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last 30 patents
Information
Patent Grant
Current control for superconducting magnetic energy storage system
Patent number
5,656,870
Issue date
Aug 12, 1997
Intermagnetics General Corporation
Fred Gerdes Turnbull
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Current chopping strategy for switched reluctance machines
Patent number
4,933,621
Issue date
Jun 12, 1990
General Electric Company
Stephen R. MacMinn
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Overload relay having adjustably gapped current transformers
Patent number
4,764,744
Issue date
Aug 16, 1988
General Electric Company
Robert P. Alley
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Single phase regeneration with a polyphase rectification power circuit
Patent number
4,449,176
Issue date
May 15, 1984
General Electric Company
Fred G. Turnbull
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Regenerative rectifier circuit
Patent number
4,447,868
Issue date
May 8, 1984
General Electric Company
Fred G. Turnbull
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Step-up/step down chopper
Patent number
4,354,223
Issue date
Oct 12, 1982
General Electric Company
Fred G. Turnbull
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Auxiliary power supply with kinetic energy storage
Patent number
4,321,478
Issue date
Mar 23, 1982
General Electric Company
Allan B. Plunkett
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and apparatus for control of inverter synchronous machine dr...
Patent number
4,255,695
Issue date
Mar 10, 1981
General Electric Company
Allan B. Plunkett
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Input current modulation to reduce torque pulsations in controlled...
Patent number
4,066,938
Issue date
Jan 3, 1978
General Electric Company
Fred G. Turnbull
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER