Patents
Patents for H01H 7 - Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts (471)
10/1999
10/27/1999CN2346068Y Modulo assembled vertical oil damped circuit breaker
08/1999
08/24/1999US5942816 Precautionary timer for kitchen range surface elements
08/04/1999CN1224911A Timing closing electric switch
07/1999
07/07/1999CN1221963A Delay switch able to limit power consumption of electrical appliances
06/1999
06/02/1999EP0920037A2 Operation-staggered dual switch
05/1999
05/19/1999CN2319946Y Delayed cut-off protector of computer power source
05/05/1999CN1215905A Delay switch with delay unit
03/1999
03/23/1999US5886426 Power switch locking device
03/10/1999CN2310384Y Electric switch specially for corridor illumination
12/1998
12/16/1998CN2300983Y Ac/dc contact with time controller
10/1998
10/27/1998US5828018 Light switch cover plate with mechanical timer mechanism
10/06/1998US5818710 Intelligent electric socket
08/1998
08/19/1998CN2288501Y Air delay switch
05/1998
05/05/1998US5747895 System for temporarily preserving signal-flow around a signal switch
04/1998
04/15/1998CN2278705Y Quick on-and-off timer for washer
12/1997
12/31/1997CN2271745Y Energy saving electronic self-turning off switch
10/1997
10/07/1997US5675227 Device for maneuvering a radiology appliance
07/1997
07/01/1997US5644112 Electrical switch
08/1996
08/21/1996EP0727798A1 Thermal contactor with trip delay
08/21/1996EP0727627A1 Refrigerator with mains switch
07/1996
07/23/1996CA2037119C Varistor assisted circuit breaker
06/1996
06/18/1996US5528131 Controlled electric power switch and process for switching an electric power circuit
09/1995
09/12/1995US5449992 Braking circuit for an electric motor
04/1995
04/20/1995WO1995010441A1 Vehicle steering wheel
05/1994
05/19/1994DE4334800A1 Car steering wheel - Has groups of switches incorporated into rim of wheel beneath covering material operating relays by infra-red transmission
05/05/1994DE4236687A1 Electricity supply pref. for woodworking machine and suction unit - includes shunted amplifier and delay switch activated by operation of single manual switch on machine for both loads
04/1994
04/20/1994EP0593322A1 Intelligent electrical socket
04/06/1994EP0590377A2 Braking circuit for an electric motor
03/1994
03/31/1994DE4332614A1 Manipulation device for diagnostic X=ray appts. - uses detector for command sequence entered via manual operating control to activate electric motor
03/30/1994EP0589785A1 Controlled elektrical power switch and switching method for an electrical power circuit
12/1993
12/23/1993WO1993026022A1 Seat cushion switch with delay circuit
12/15/1993CN1023161C Flexible flat cable for connecting head of automatic reverse type recorder
12/01/1993CN1022959C Line circuit breaker with changeable risistor auxiliary break
11/1993
11/24/1993CN2147625Y Cable for oil well energy-exchanger
09/1993
09/08/1993CN2141678Y Multifunctional timer for electric rice pot
04/1993
04/21/1993EP0537700A1 Electrical switching device, in particular rocker switch for household appliances
04/21/1993CN2130285Y Delayed automatic cut-out switch
04/13/1993US5202585 Electronic device including improved connection device
01/1993
01/28/1993DE4214884A1 Time-delay device esp. for control signal current - has movable porous chlorine body solidified by distillation and impregnated with alloy powder
12/1992
12/08/1992US5170023 Circuit breaker with varistor-assisted interruption
10/1992
10/07/1992EP0507538A2 Electrical actuator with means for preventing dither at a limit switch
08/1992
08/05/1992CN2112197U Push button-type automatic cut-off switch
06/1992
06/17/1992CN2107707U Automatic turn off switch for lamp
06/10/1992CN2107058U Air damped delay-action circuit breaker
06/09/1992US5120980 Seat cushion switch with delay circuit
04/1992
04/15/1992CN2101938U Pneumatic timer electric switch
03/1992
03/25/1992CN1016022B Pull switch with automatic delay function
03/17/1992US5097113 Touch switch arrangement for a heating cooking appliance
01/1992
01/14/1992US5081405 Electrical actuator with means for preventing dither at a limit switch
01/02/1992DE4020294A1 Electrical switch for computer or HI=FI system - provides time delays between outputs by clock-driven shift register
11/1991
11/20/1991CN2089205U Wall air drag delay button switch
11/06/1991CN2088285U Air pressure delay-action circuit breaker
10/1991
10/16/1991CN1055443A Line circuit breaker with changeble resistor auxiliary break
10/09/1991CN2086454U Dual-functional delay saving switch
09/1991
09/25/1991CN2085556U Delay switch
09/04/1991EP0444568A1 Circuit breaker assisted by varistor
08/1991
08/07/1991CN2082455U Mechanism type timer
08/07/1991CN2082454U Bimetallic delay switch
07/1991
07/17/1991CN2080835U Temp-regulating timer switch for electrothermic blanket
07/03/1991CN2080220U Power saving pull switch of delay switch
02/1991
02/27/1991CN2072269U Delay turn-off switch for lighting
12/1990
12/19/1990CN2067857U Power-saving delay switch
12/12/1990CN2067453U Time-delay and -non-delay dual-purpose mains switch
11/1990
11/07/1990CN2065356U New-type delay-action switch for electric lamp
10/1990
10/10/1990CN1046065A Pull switch with automatic delay function
10/10/1990CN1046064A Switch with the function of automatic delay cut off
09/1990
09/19/1990CN2062484U Electric delay controller
08/1990
08/29/1990CN2061328U Time-delay selection automatic switch
08/14/1990US4948927 Visco-elastic delayed actuator and system
07/1990
07/04/1990CN2059019U Energy-saving manual switch
06/1990
06/13/1990CN1043033A Flexible flat cable for connecting head of automatic reverse type tape recorder
04/1990
04/18/1990CN2056275U Mechanical timing contactor
04/11/1990CN2055920U Electricity-saving protector for refrigerator
03/1990
03/21/1990CN2054937U Dual purpose delay-action and non-delay-action circuit breaker
03/14/1990CN2054564U Automatic delay electricity-saving switch
03/07/1990CN2054194U Flexible flat cable for automatic returning magnetic head
02/1990
02/21/1990CN2053378U Rotary timing controller
02/21/1990CN2053373U Switch for elongating service life of illuminating, delaying and saving energy
02/14/1990CN2052939U 延时开关 Delay switch
01/1990
01/31/1990CN2052144U Power-saving gas-control timing switch
01/17/1990CN2051390U Oil control time-delay electricity-saving switch
11/1989
11/15/1989CN2047835U timing lighting switch
11/08/1989CN2047354U Refrigerator power-failure protector
11/08/1989CN2047353U 电冰箱保护器 Fridge protection
10/1989
10/26/1989DE3900944A1 Switching device which switches in a time-dependent manner
10/11/1989CN2045893U Automatic delayed electricity-stoped switch
09/1989
09/13/1989CN2044369U Short timed power switch
09/13/1989CN2044367U Time delay controller
07/1989
07/05/1989CN2040619U Electricity saving protector for refrigerator
06/1989
06/14/1989CN2039452U Delay-action push-button switch
05/1989
05/10/1989CN2037498U Automatic lockout switch
04/1989
04/19/1989CN2036310U Electricity saving delay switch
04/12/1989CN2035916U Automatic delay and disconnection button
04/12/1989CN2035915U Mechanical timing switch
04/04/1989CA1252141A1 Delay switch
01/1989
01/18/1989CN2031160U Pneumatic power-saving switch
01/11/1989CN2030754U Self-off switch
12/1988
12/27/1988US4794213 Delayed action switch actuator
12/14/1988CN87212159U Multifunction simple controller
12/13/1988US4791251 Delayed actuator with visco-elastic timer
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