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Class Information
Number: 335/174
Name: Electricity: magnetically operated switches, magnets, and electromagnets > Electromagnetically actuated switches > Tripping means > Magnetically operated
Description: Subject matter wherein the tripping means includes significant magnetic structure whereby the tripping means is actuated. The magnetic flux for operating the trip device may be derived from the main magnetic circuit or from an independent magnetic source.










Sub-classes under this class:

Class Number Class Name Patents
335/175 Utilizing hammer or other impacting means 46
335/176 With adjusting or regulating means 92


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8618896 Apparatus for tripping an electrical switch Dec. 31, 2013
8587393 Protection device for an automatic circuit breaker and automatic circuit breaker comprising this device Nov. 19, 2013
8547190 Tripping apparatus, particularly for circuit breakers Oct. 1, 2013
8542084 Circuit protection device and trip unit for use with a circuit protection device Sep. 24, 2013
8476998 Electromagnetic trip device for an electric switch apparatus, electric switch apparatus comprising one such trip device Jul. 2, 2013
8471654 Circuit protection device and flux shifter for a circuit protection device Jun. 25, 2013
8207804 Operating device that performs opening and closing operations of a switch Jun. 26, 2012
8143980 Switching device Mar. 27, 2012
8138440 Medium-voltage circuit-breaker Mar. 20, 2012
8138862 Double break installation switchgear Mar. 20, 2012
8134428 Circuit breaker with electronic sensing and de-latch activation Mar. 13, 2012
8098123 Power inductor with reduced DC current saturation Jan. 17, 2012
8049584 Switching device Nov. 1, 2011
7986203 Multi-pole armature interlock for circuit breakers Jul. 26, 2011
7961480 Device for housing and connection of accessories for switches Jun. 14, 2011
7911303 Circuit breaker and opening and closing method thereof Mar. 22, 2011
7830231 Trip actuator including a thermoplastic bushing, and trip unit and electrical switching apparatus including the same Nov. 9, 2010
7663457 Magnetic latch for a voice coil actuator Feb. 16, 2010
7623011 Device for remotely operating a circuit breaker apparatus and associated assembly and method Nov. 24, 2009
7595710 Maglatch mechanism for use in lighting control pod Sep. 29, 2009
7570140 Magnetic trip mechanism including a plunger member engaging a support structure, and circuit breaker including the same Aug. 4, 2009
7535327 Circuit breaker May. 19, 2009
7352265 Manual trip control method and arrangement for multiple circuit interrupters Apr. 1, 2008
7298236 Circuit breaker electromagnetic tripping device Nov. 20, 2007
7132911 Breaker for protecting electric facilities Nov. 7, 2006
6980071 Apparatus and method for circuit breaker trip unit adjustment Dec. 27, 2005
6980069 Magnetic device for a magnetic trip unit Dec. 27, 2005
6949998 Apparatus for motor protection and control Sep. 27, 2005
6924720 Circuit breaker Aug. 2, 2005
6900712 Circuit breaker May. 31, 2005
6864450 Circuit breaker with delay mechanism Mar. 8, 2005
6853277 Auxiliary magnetic trip system Feb. 8, 2005
6842096 Circuit breaker magnetic trip assembly Jan. 11, 2005
6803844 Switchgear for low-voltage switching units with a linearly displaceable contact support Oct. 12, 2004
6794963 Magnetic device for a magnetic trip unit Sep. 21, 2004
6700467 Circuit interrupter operating mechanism Mar. 2, 2004
6597266 External actuator interlock mechanism for circuit breaker Jul. 22, 2003
6590482 Circuit breaker mechanism tripping cam Jul. 8, 2003
6577217 Optimized magnetic sub-assembly Jun. 10, 2003
6541727 Molded case circuit breaker including vacuum switch assembly Apr. 1, 2003
6472964 Magnetic trip Oct. 29, 2002
6420948 Parallel contact circuit breaker Jul. 16, 2002
6407653 Circuit interrupter with a magnetically-induced automatic trip assembly having adjustable armature biasing Jun. 18, 2002
6366187 Support and alignment structure for magnetic trip device Apr. 2, 2002
6307455 Control mechanism for a circuit breaker Oct. 23, 2001
6307453 Circuit breaker with instantaneous trip provided by main conductor routed through magnetic circuit of electronic trip motor Oct. 23, 2001
6300853 Device with axially positionable coil winding Oct. 9, 2001
6218921 Adjustable flux transfer shunt trip actuator and electric power switch incorporating same Apr. 17, 2001
6211757 Fast acting high force trip actuator Apr. 3, 2001
6121862 Magnetic flux concentrator shield for use in overload relay Sep. 19, 2000

1 2 3










 
 
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