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Class Information
Number: 361/4
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > Arc suppression at switching point (i.e., includes solid-state switch) > Synchronized or sequential opening or closing > Counter electromotive force
Description: Subject matter with means for inserting an opposing voltage or current across the switching points to effectively cancel the arc producing surge.










Patents under this class:

Patent Number Title Of Patent Date Issued
8655500 Method and system for reducing feeder circuit loss using demand response Feb. 18, 2014
8502542 Apparatus and method for monitoring a phase line of a section of an electrical energy transmission line Aug. 6, 2013
8467155 Contact protection circuit and high voltage relay comprising the same Jun. 18, 2013
8270128 Commutation type DC breaker Sep. 18, 2012
8150557 Method and system for reducing feeder circuit loss using demand response Apr. 3, 2012
8134820 Contactor control circuit Mar. 13, 2012
7970650 POS device Jun. 28, 2011
7875822 Ablative-based multiphase current interrupter Jan. 25, 2011
7778738 Method and system for reducing feeder circuit loss using demand response Aug. 17, 2010
7660083 Electromechanical and solid-state AC relay with reduced arcing Feb. 9, 2010
7542250 Micro-electromechanical system based electric motor starter Jun. 2, 2009
6687100 Method of dissipating energy from a contactor coil Feb. 3, 2004
6466420 High voltage disconnector having a moving contact that is moved at high speed Oct. 15, 2002
6075684 Method and arrangement for direct current circuit interruption Jun. 13, 2000
5854729 Power system device and method for actively interrupting fault current before reaching peak magnitude Dec. 29, 1998
5703743 Two terminal active arc suppressor Dec. 30, 1997
5517378 Direct-current breaker for high power for connection into a direct-current carrying high-voltage line May. 14, 1996
5502609 Electric circuitry for preventing contactor tip contamination in dry switching applications Mar. 26, 1996
5452170 Commutation type DC breaker Sep. 19, 1995
5402297 Commutating type DC circuit breaker arrangement Mar. 28, 1995
5214557 D.C. vacuum circuit breaker for an electric motor vehicle May. 25, 1993
5210674 Superconducting coil protective system May. 11, 1993
4805062 DC circuit breaker and method of commutation thereof Feb. 14, 1989
4740858 Zero-current arc-suppression dc circuit breaker Apr. 26, 1988
4618905 DC circuit breaker Oct. 21, 1986
4578730 High-voltage DC circuit breaker apparatus Mar. 25, 1986
4544978 Circuit for the arcless de-energization of a direct current load Oct. 1, 1985
4449162 Drive circuit May. 15, 1984
4442469 DC Circuit breaker apparatus Apr. 10, 1984
4356525 Method and circuit for controlling a hybrid contactor Oct. 26, 1982
4346420 Magnetoplasmadynamic switch Aug. 24, 1982
4319296 Series connected oscillating transverse field interrupter and method Mar. 9, 1982
4307428 Circuit breaker apparatus for high voltage direct currents Dec. 22, 1981
4305107 DC Interrupting apparatus Dec. 8, 1981
4300181 Commutation circuit for an HVDC circuit breaker Nov. 10, 1981
4287436 Electrical circuit for driving an inductive load Sep. 1, 1981
4249223 High voltage DC contactor with solid state arc quenching Feb. 3, 1981
4216513 D.C. Circuit breaker Aug. 5, 1980
4172268 Direct current circuit interrupting apparatus Oct. 23, 1979
4110806 Circuit interrupting apparatus for use in direct current circuits Aug. 29, 1978
4056836 Method and apparatus for interrupting large current Nov. 1, 1977
4036199 Device for protecting an ignition device for motor vehicles Jul. 19, 1977
3949239 Circuit for actuating a monostable or bistable inductive device Apr. 6, 1976











 
 
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