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Class Information
Number: 200/50.01
Name: Electricity: circuit makers and breakers > Interlocking
Description: Devices in which means are provided for insuring a predetermined sequence of operation of a plurality of switches or of a switch and an associated element, as the switch-casing cover or an auxiliary plug.










Sub-classes under this class:

Class Number Class Name Patents
200/50.32 Between plural switches 169
200/50.28 Between switch and connector assembly 38
200/50.02 Between switches and housing 77
200/50.21 Drawout-type switchgear 151


Patents under this class:
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Patent Number Title Of Patent Date Issued
8445797 Safety interlocking device for a switch May. 21, 2013
8354603 Switching device Jan. 15, 2013
8291800 Combination power tool Oct. 23, 2012
8286521 Control panel actuator device Oct. 16, 2012
8238110 Device to shield against interference from electrical appliances Aug. 7, 2012
8203088 Electrical switching apparatus and close latch interlock assembly therefor Jun. 19, 2012
8115127 Extended drive plate deliberate action rotary handle Feb. 14, 2012
7977814 Centralized HV interlock system Jul. 12, 2011
7902468 Detent changeover switch apparatus Mar. 8, 2011
7869192 Adjustable electrical switching apparatus mounting apparatus and switchgear apparatus including the same Jan. 11, 2011
7767918 Power tool Aug. 3, 2010
7724112 Safety switch May. 25, 2010
7592555 Retention arrangement for a circuit interrupter Sep. 22, 2009
7566841 Tie bar for two pole switching device Jul. 28, 2009
7560654 Extended drive plate rotary handle Jul. 14, 2009
7410020 Interlock device for high-voltage apparatus Aug. 12, 2008
7411139 Circuit breaker interlock devices, systems, and methods Aug. 12, 2008
7405369 Interlock apparatus and method for disconnect switches Jul. 29, 2008
7286340 Adjustable adapter for mounting electrical switching apparatus and enclosure assembly employing the same Oct. 23, 2007
7238898 Switch assembly for an electrical panel Jul. 3, 2007
7067746 Travelling mechanism for a withdrawable circuit-breaker Jun. 27, 2006
7053321 Apparatus operating an isolation switch in coordination with a circuit breaker May. 30, 2006
7034233 Device for controlling a blocking mechanism of an electric switch in a switch cell Apr. 25, 2006
7019229 Door interlock assembly and draw-out circuit breaker assembly employing the same Mar. 28, 2006
7019228 Method for controlling a displaceable electrical switching module Mar. 28, 2006
6995327 Four-way interlock system and bypass transfer switch employing the same Feb. 7, 2006
6966237 First gear/reverse gate indicator switch Nov. 22, 2005
6958456 Positive locking, trigger grip, external operating handle assembly for network protector enclosures Oct. 25, 2005
6927349 In-line electrical switch interlock with switch retention feature Aug. 9, 2005
6872898 Lockable switch mechanism Mar. 29, 2005
6864444 Locking device Mar. 8, 2005
6864443 Multipolar circuit-protection assembly for a collector rail system Mar. 8, 2005
6852961 High frequency heating apparatus provided with a switch attachment mechansm capable of covering at least one switch from outside Feb. 8, 2005
6833519 Switching system with a combined switching and blocking device Dec. 21, 2004
6812416 Circuit breaker module safety device and method Nov. 2, 2004
6794967 Electromagnetic switch device Sep. 21, 2004
6753485 Rotary switch containing fuse capabilities Jun. 22, 2004
6730867 Electrically operated ratcheting pawl latch May. 4, 2004
6693502 Air circuit breaker Feb. 17, 2004
6664488 Contactor with a front mask Dec. 16, 2003
6555773 Electric switch Apr. 29, 2003
6548769 Circuit breaker Apr. 15, 2003
6506986 Alternate door interlock defeater Jan. 14, 2003
6486417 Circuit breaker on-off switch mechanism Nov. 26, 2002
6455788 Bypass device for amplifier Sep. 24, 2002
6445570 Automatically operating interlock assembly requiring an electrical cabinet to be closed before connection of the equipment Sep. 3, 2002
6437261 Interlock for use in an electric motor handle and contactor combination Aug. 20, 2002
6388214 Mechanical and gate for interlocking electric power switches and distribution system incorporating same May. 14, 2002
6314236 Cordless dryer safety interlock system Nov. 6, 2001
6300610 Microwave oven with door latching member Oct. 9, 2001

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