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Class Information
Number: 318/792
Name: Electricity: motive power systems > Induction motor systems > Primary circuit control > Starting control > Operating from a single phase source > Start winding removed during running operation > By thermal switch > With variable temperature coefficient impedance element
Description: Subject matter wherein the heat responsive switch means includes an element whose impedance is a function of its temperature.

Patents under this class:

Patent Number Title Of Patent Date Issued
7583041 Overheat preventing apparatus for electric motor Sep. 1, 2009
7265515 Starter for a line start electric motor Sep. 4, 2007
7061204 Motor starter device having reduced power consumption Jun. 13, 2006
6239523 Cutout start switch May. 29, 2001
5952811 Device for shutting off current through a motor start-up circuit after a specified wait period Sep. 14, 1999
5451853 Starting device for a single phase induction motor Sep. 19, 1995
5192887 Starting multi-speed motors at a low speed connection Mar. 9, 1993
4574229 Power efficient motor starter and circuit breaker for an induction motor Mar. 4, 1986
4500825 Self-starting single-phase synchronous motor Feb. 19, 1985
4499517 Motor protector particularly suited for use with compressor motors Feb. 12, 1985
4445079 Electromagnetic relays Apr. 24, 1984
4422120 Combination starter-protector device Dec. 20, 1983
4272714 Starter device for a single-phase asynchronous motor Jun. 9, 1981
4198669 Compact PTC resistor Apr. 15, 1980
4161681 Prime mover, method of operating such and circuit Jul. 17, 1979

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