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Class Information
Number: 335/175
Name: Electricity: magnetically operated switches, magnets, and electromagnets > Electromagnetically actuated switches > Tripping means > Magnetically operated > Utilizing hammer or other impacting means
Description: Subject matter wherein the magnetic trip actuating structure includes impact means whereby the latch is tripped by the delivery of a sharp hammer blow to some part thereof. The impact means usually consists of a reciprocating member (armature) actuated by a coil but may be an inertia means released by action of an armature.

Patents under this class:

Patent Number Title Of Patent Date Issued
8618896 Apparatus for tripping an electrical switch Dec. 31, 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
8138862 Double break installation switchgear Mar. 20, 2012
7633364 Dampening apparatus and circuit interrupter including the same Dec. 15, 2009
7623011 Device for remotely operating a circuit breaker apparatus and associated assembly and method Nov. 24, 2009
7570140 Magnetic trip mechanism including a plunger member engaging a support structure, and circuit breaker including the same Aug. 4, 2009
7414498 Enhanced solenoid-armature interface Aug. 19, 2008
7405640 Enhanced solenoid-armature interface Jul. 29, 2008
7298236 Circuit breaker electromagnetic tripping device Nov. 20, 2007
7154361 Accessories for a rotatable latching shaft of a circuit breaker Dec. 26, 2006
7145421 Device for supplying an electronic protection device to be used in a low-voltage circuit breaker Dec. 5, 2006
6870115 Circuit breaker including extension spring(s) between operating mechanism pivot and operating handle Mar. 22, 2005
6864451 Circuit breaker including operating handle having one or more operating arms and extension springs Mar. 8, 2005
6768404 Circuit breaker and plunger assembly support structure including a positioning member Jul. 27, 2004
6420948 Parallel contact circuit breaker Jul. 16, 2002
6366187 Support and alignment structure for magnetic trip device Apr. 2, 2002
6353377 Trip assembly for circuit breakers with shock absorbing components Mar. 5, 2002
6211757 Fast acting high force trip actuator Apr. 3, 2001
6087914 Circuit breaker combination thermal and magnetic trip actuator Jul. 11, 2000
5982258 Tripping device for a circuit breaker equipped with an electrical fault indication Nov. 9, 1999
5923748 Telephone device for preventing a long-term on-line state resulting from the handset being unintentionally off-hook Jul. 13, 1999
5444424 Circuit breaker trip solenoid having over-travel mechanism Aug. 22, 1995
5162765 Adjustable magnetic tripping device and circuit breaker including such device Nov. 10, 1992
5097589 Method of manufacturing a circuit breaker Mar. 24, 1992
4864262 Undervoltage trip device Sep. 5, 1989
4816798 Electrical protection switch Mar. 28, 1989
4806893 Molded case circuit breaker actuator-accessory unit Feb. 21, 1989
4745260 Automatic switching apparatus for an electric appliance May. 17, 1988
4713639 Circuit breaker with push-to-trip button and trip bar Dec. 15, 1987
4658227 High speed magnetic contact driver Apr. 14, 1987
4641001 Circuit interrupter Feb. 3, 1987
4631507 Variable composition switching device Dec. 23, 1986
4608546 Automatic switch with impact-armature tripping device Aug. 26, 1986
4599590 Switch with a selective release Jul. 8, 1986
4500863 Circuit breaker having an integrated power trap arm Feb. 19, 1985
4473860 Contactor apparatus comprising automatic opening means and a local control member Sep. 25, 1984
4470028 Mechanically controlled switch with automatic opening Sep. 4, 1984
4346358 Contact pop responsive latch release for circuit breakers Aug. 24, 1982
4307358 Electromagnetic contactor is fitted with an electromagnet sensitive to over-currents, to cause the limitation and cut-off of excess currents Dec. 22, 1981
4292612 Remotely switchable residential circuit breaker Sep. 29, 1981
4243964 Electromagnetically operated switch, particularly starter switch for automotive starter motors Jan. 6, 1981
4197519 Circuit breaker having cam surfaces on the trip member Apr. 8, 1980
4156219 Electric circuit breaker May. 22, 1979
3946345 Narrow multi-pole circuit breaker having inertia actuated overtravel for latch release Mar. 23, 1976
3946346 Current limiting circuit breaker Mar. 23, 1976

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