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Class Information
Number: 218/43
Name: High-voltage switches with arc preventing or extinguishing devices > Arc preventing or extinguishing devices > Air-current blowout
Description: Subject matter including means for directing a blast of gas, such as air, across the arc to extinguish it.










Sub-classes under this class:

Class Number Class Name Patents
218/81 Arc chute 16
218/85 Arc extinguishing medium 27
218/46 Arcing chamber 33
218/48 Contact structure 50
218/88 Control of blast valve and contacts 4
218/45 Disconnect switch 34
218/55 Grounding switch 19
218/82 Identical units back-to-back 17
218/86 Low pressure cut-off valve means 7
218/87 Magnetic synchronous contacts 1
218/84 Operating mechanism structure or arrangement 131
218/44 Polyphase 25
218/57 Puffer piston 85
218/83 Recirculating systems 17
218/68 Sealed chamber 67
218/56 Self extinguishing 11
218/51 With gas flow means 52
218/53 With nozzle 35


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8546716 Gas-blast circuit breaker with a radial flow opening Oct. 1, 2013
8492672 Insulated arc flash arrester Jul. 23, 2013
8487203 Disconnecting switch with earthing switch Jul. 16, 2013
8399791 Interrupter arrangement having a movable switching tube Mar. 19, 2013
8168909 Vacuum switchgear May. 1, 2012
8148660 Gas-insulated high-voltage circuit breaker with a relief duct which is controlled by an overflow valve Apr. 3, 2012
8044318 Interrupting chamber of a circuit-breaker having two compression volumes Oct. 25, 2011
8000087 Gas insulated switchgear Aug. 16, 2011
7902478 Switching chamber for a gas-insulated high-voltage switch Mar. 8, 2011
7875822 Ablative-based multiphase current interrupter Jan. 25, 2011
7848084 Gas-insulated equipment Dec. 7, 2010
7816618 Gas insulated switchgear Oct. 19, 2010
7813109 Switchgear Oct. 12, 2010
7764486 Gas-insulated power apparatus Jul. 27, 2010
7754991 Medium-voltage or high voltage electrical switchgear Jul. 13, 2010
7742283 Gas-insulated equipment Jun. 22, 2010
7732727 Heavy-duty circuit-breaker with sealing against hot gas Jun. 8, 2010
7692113 Switch assembly Apr. 6, 2010
7679022 Vacuum insulated switchgear Mar. 16, 2010
7595461 Heavy-duty circuit breaker with erosion-resistant short-circuit current routing Sep. 29, 2009
7580247 Double bus bar load center Aug. 25, 2009
7498540 Gas-blast circuit breaker Mar. 3, 2009
7402771 Circuit breaker Jul. 22, 2008
7391605 Encapsulated gas-insulated switchgear assembly Jun. 24, 2008
7236351 Armoured station element articulated to the ground Jun. 26, 2007
7202435 Circuit-breaker Apr. 10, 2007
7193172 Gas-insulated switchgear tank Mar. 20, 2007
7022922 Power switch with a mobile contact element and extinction gas flow that move in an axial direction when activated Apr. 4, 2006
6995330 Earthing switch Feb. 7, 2006
6872907 Circuit-breaker Mar. 29, 2005
6787725 Switching mechanism of circuit breaker for gas insulted switchgear Sep. 7, 2004
6762386 Switchgear Jul. 13, 2004
6744000 High-voltage circuit breaker having an insulating nozzle Jun. 1, 2004
6740837 Contact zone for a power breaker May. 25, 2004
6727454 Gas-insulated switchgear Apr. 27, 2004
6723939 Isolation switch for electric power systems Apr. 20, 2004
6693250 Hybrid gas insulation switchgear apparatus Feb. 17, 2004
6689980 Circuit breaker having hybrid arc extinguishing function Feb. 10, 2004
6664494 Current collector and gas circuit breaker Dec. 16, 2003
6664493 Gas-insulated switchgear Dec. 16, 2003
6657150 Shorting switch and system to eliminate arcing faults in power distribution equipment Dec. 2, 2003
6627831 Insulating component for high-voltage installations and a method for the production thereof Sep. 30, 2003
6624370 Gas circuit breaker Sep. 23, 2003
6621030 Gas-insulated switchgear Sep. 16, 2003
6603088 Pressurized gas circuit-breaker pole that can be assembled and disassembled without significant loss of gas Aug. 5, 2003
6583375 Drive rod for a high-voltage circuit-breaker Jun. 24, 2003
6559403 Three-position electrical switch having a switching element that is movable in axial translation May. 6, 2003
6545241 Gas-insulated switchgear device Apr. 8, 2003
6538224 Hybrid type gas insulation switch gear apparatus Mar. 25, 2003
6521855 Hybrid gas insulation switchgear apparatus Feb. 18, 2003

1 2 3










 
 
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