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Class Information
Number: 307/140
Name: Electrical transmission or interconnection systems > Switching systems > Switch actuation > Power circuit controlled
Description: Subject matter having means to control a power circuit.










Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
5212478 Dynamic power recovery system May. 18, 1993
5203004 Multi-board system having electronic keying and preventing power to improperly connected plug-in board with improperly configured diode connections Apr. 13, 1993
5196731 Power on/off circuit with lock function Mar. 23, 1993
5194858 Lighting control system with set/reset ground remote Mar. 16, 1993
5194781 Control circuit Mar. 16, 1993
5192874 Interface circuit for low power drain microprocessor-based thermostat Mar. 9, 1993
5192883 Interface circuit for semiconductor memory device Mar. 9, 1993
5170068 Master electrical load control system Dec. 8, 1992
5170491 Power source switch circuit Dec. 8, 1992
5160853 Electronic timer switch with time tracker Nov. 3, 1992
5148044 Structure of multiplex connector Sep. 15, 1992
5117122 Integrated outlet for communication and electrical power transmissions with noise reducing characteristics May. 26, 1992
5099145 System disconnection detection circuit for a distributed location power source Mar. 24, 1992
5075601 Power supply dynamic load for traffic and pedestrian signal Dec. 24, 1991
5036214 Remote control switch for controlling two electric supplies Jul. 30, 1991
5029038 Dual resistance bus connector Jul. 2, 1991
5006728 Dual path power supply circuit with time controlled switching Apr. 9, 1991
5003192 AC power switching device with non-volatile memory unit Mar. 26, 1991
4985772 Television signal decoder bypass switch Jan. 15, 1991
RE33504 Wall box dimer switch with plural remote control switches Dec. 25, 1990
4978865 Circuit for regulating a pulsating current Dec. 18, 1990
4967098 Controller for outdoor lighting systems Oct. 30, 1990
4947278 Remote sensing power disconnect circuit Aug. 7, 1990
4915639 "Smart" AC receptacle and complementary plug Apr. 10, 1990
4905115 Automatic and manual DC power switch Feb. 27, 1990
4879476 Method and apparatus for transmitting signals Nov. 7, 1989
4873454 Power source switching circuit Oct. 10, 1989
4870526 Automatic power turn-off apparatus for an electronic apparatus Sep. 26, 1989
4857759 Alternating current outlet adapter Aug. 15, 1989
4857758 Cycle timer for household appliance Aug. 15, 1989
4855612 Switching current and a relay device employed therein Aug. 8, 1989
4851708 Timeswitches Jul. 25, 1989
4841162 Limiter switching apparatus Jun. 20, 1989
4839533 Remote safety switch Jun. 13, 1989
4835413 Electronic wall switch actuator May. 30, 1989
4833339 Load control system May. 23, 1989
4825143 Digital meter automatic off power supply circuit Apr. 25, 1989
4823022 Apparatus and method for sensing power line conditions Apr. 18, 1989
4823021 Circuit for detecting on/off states of switches Apr. 18, 1989
4820938 Low voltage motion sensor for activating a high voltage load Apr. 11, 1989
4804862 Electro mechanical switch having remotely controlled off position Feb. 14, 1989
4800292 Temperature sensing circuit Jan. 24, 1989
4800293 Infrasonic switch Jan. 24, 1989
4789791 Rotary drive mechanism Dec. 6, 1988
4782420 Safety switch apparatus Nov. 1, 1988
4782393 Television camera system with a protection function for a misconnection Nov. 1, 1988
4777379 Power cycling apparatus Oct. 11, 1988
4777373 Radiation image recording and read-out apparatus Oct. 11, 1988
4772809 Switching circuit and a relay device employed to prevent arcing Sep. 20, 1988
4766330 Switching equipment for numerical controlled machine tools Aug. 23, 1988

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