Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02H - Emergency protective circuit arrangements › H02H 5 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
Patents for H02H 5 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection (5,568)
09/1983
09/14/1983EP0088390A1 Protection device for electrical appliances
09/06/1983US4402211 System for monitoring abnormality of oil-filled electric devices
09/06/1983CA1153425A1 Ground monitoring system
06/1983
06/21/1983US4389694 Cable continuity monitoring system
06/07/1983CA1147575A1 Method and apparatus for diagnosing overheating of an electric machine
05/1983
05/31/1983CA1147445A1 System of protection against short circuits and fulminations
03/1983
03/31/1983WO1983001138A1 Self-monitoring heat tracing system
02/1983
02/15/1983US4373376 Method and apparatus for diagnosing overheating of an electric machine
02/08/1983USRE31147 Ground fault and fire detector system
02/01/1983US4371910 Safety device for electric consumers in motor vehicles
02/01/1983US4371822 Control device for pulse motors, having a fail safe function
01/1983
01/19/1983EP0069930A1 Monitor device for laser systems transmitting laser light through optical fibers
01/18/1983US4369479 Safety power cutoff for appliances
01/12/1983EP0069182A1 Security device for electronic apparatuses and especially for television receivers
12/1982
12/28/1982CA1138509A1 Electrical heating apparatus with overheating protection
12/22/1982EP0067702A2 Laser scalpel including a safety device
12/14/1982US4364032 Method and apparatus for diagnosing local overheating in a rotary electric machine
10/1982
10/05/1982US4352293 Method of diagnosing vibration of rotary machine
09/1982
09/28/1982CA1132681A1 Temperature control system for electric surface heater
08/1982
08/24/1982CA1130435A1 Protector circuit for solenoid operator
08/17/1982US4345218 Two stage thermal shutdown
08/10/1982CA1129517A1 Current/flow comparator
08/03/1982CA1129060A1 Circuit breaker having an electronic fault sensing and trip initiating unit
07/1982
07/06/1982US4338546 Liquid level detection circuit for control of liquid level responsive device
06/1982
06/08/1982US4334255 Protection device for a vehicle-mounted air conditioner compressor
05/1982
05/25/1982CA1124320A1 D.c. motors
05/18/1982US4330808 Automatic control for processing signals from an overheat monitor of a dynamoelectric machine
04/1982
04/27/1982US4327397 Computer power/temperature protector
04/21/1982EP0049870A1 Fault-current protection device
04/20/1982US4325222 Device responsive to unusual temperature change in refrigerant compressor
04/06/1982US4323747 Safety apparatus for microwave cooking devices
03/1982
03/23/1982US4321643 Ground monitoring system
02/1982
02/09/1982US4315141 Electrical heating apparatus with overheating protection
12/1981
12/29/1981CA1115318A1 Safety circuit for electric bedcover
12/29/1981CA1115317A1 Safety circuit for electric bedcover
10/1981
10/27/1981CA1111540A1 Overpressure protection for vaporization cooled electrical apparatus
10/27/1981CA1111470A1 Protective method and circuits for sheathed electrical resistance heating units
10/20/1981US4296450 Discriminating circuit breaker protection system direct current power distribution systems
10/06/1981US4293730 Method and apparatus for detecting a ground on electric furnaces
09/1981
09/08/1981US4288833 Lightning arrestor
08/1981
08/18/1981CA1107349A1 Protective circuit for a switching regulator
07/1981
07/28/1981US4281237 Safety circuit for electric bedcover
07/14/1981US4278874 Heating circuits
07/07/1981US4277671 Temperature control system for electric heating appliance
07/07/1981US4277670 Temperature control system for electric heating apparatus
06/1981
06/16/1981US4273674 Thermal detecting paint compositions
06/09/1981US4272671 Temperature control system for electric surface heater
05/1981
05/27/1981EP0029406A1 Flexible electrical connection cord with protection device
05/26/1981US4270158 System of protection against short circuits and fulminations
05/26/1981CA1101965A1 Temperature supervising system
05/26/1981CA1101924A1 Ground fault and fire detector system
05/19/1981US4268887 Protective system for power stage of IC amplifier
05/12/1981CA1101084A1 Thermally responsive metal oxide varistor transient suppression circuit
04/1981
04/08/1981EP0026571A1 Protection of electrical systems using PTC devices
02/1981
02/17/1981US4251764 Interface circuit for interconnecting an electronic controller to a resistance welding machine
02/17/1981US4251718 Heating circuits
02/17/1981US4251717 Heating circuits
02/10/1981USRE30514 Thermally self-protected power switching semiconductor device
12/1980
12/30/1980CA1092678A1 Device for detecting abnormal temperature in fixer
10/1980
10/14/1980CA1087708A1 Protection system for electric motor
10/01/1980EP0015959A1 Protection arrangement against a solicitation by suppression of the encapsulation upon an accidentel arc discharge in switching devices encapsulated and insulated by pressure gas
09/1980
09/23/1980CA1086375A1 High speed fault diverter switch for gas-insulated systems
09/16/1980US4223364 Pressure and temperature responsive protective devices
09/09/1980CA1085277A1 Carboxylic acid composition for forming thermoparticulating coating
09/02/1980US4220951 Method and system for protecting barge
08/1980
08/26/1980US4219861 Protector circuit for solenoid operator
08/26/1980US4219857 Protective method and circuits for sheathed electrical resistance heating units
08/26/1980US4219798 Automotive on-board network electrical system with warning means to indicate trouble in the alternator of the system
08/19/1980US4218716 Programmable fault detecting relay for a transformer
08/12/1980US4217482 Electric cooking apparatus with safety control
07/1980
07/01/1980US4210947 Protective circuit for a switching regulator
06/1980
06/24/1980US4209818 Circuit breaker having an electronic fault sensing and trip initiating unit
06/10/1980CA1079390A1 Detection of incipient damage in rolling contact bearings
06/10/1980CA1079364A1 Fault detector system for starting plasma arc working apparatus
05/1980
05/27/1980US4205223 Heating circuits for detection of localized overheating
05/27/1980US4204428 Thermal detection system for failure in electrical apparatus and thermal detecting paint compositions
05/14/1980EP0010861A1 System for protecting an offshore structure
05/13/1980US4203101 Electric power interrupting apparatus
05/06/1980CA1077111A1 Electric blanket control circuit
04/1980
04/15/1980US4198562 Electrically heated bedcover with overheat protective circuit
04/08/1980US4197442 Temperature supervising system
03/1980
03/25/1980US4195254 Control circuit for a D.C. motor
02/1980
02/26/1980US4190829 Current/flow comparator
02/19/1980CA1072174A1 Condition responsive transformer primary switch
02/12/1980CA1071427A1 Hot spot thermometer
12/1979
12/18/1979CA1068331A1 Protective circuit for dynamic braking resistors
12/18/1979CA1068319A1 Fail safe circuit for heat generating device
11/1979
11/29/1979WO1979001033A1 Protection arrangement against a solicitation by suppression of the encapsulation upon an accidental arc discharge in switching devices encapsulated and insulated by pressure gas
11/20/1979US4175255 Device to protect against flow of current
10/1979
10/09/1979CA1063884A1 Device for indicating overheating in generators
10/04/1979WO1979000769A1 Circuit breaker having an electronic fault sensing and trip initiating unit
07/1979
07/31/1979US4163269 Ground fault and fire detector system
07/10/1979US4160908 Particulate enhancement for generator condition monitors
06/1979
06/12/1979CA1056533A1 Malonic acid composition for thermoparticulating coating
06/05/1979US4157513 Protective system for power stage of monolithic circuitry
05/1979
05/16/1979EP0001831A2 Apparatus protected against electric current short circuits
04/1979
04/10/1979US4149161 Protecting electrical apparatus with gas generating compounds
04/03/1979US4148086 Device for overload protection of electric apparatus
03/1979
03/27/1979US4146847 Power limiting circuitry for use with power amplifier
03/06/1979US4142416 To signal overheating of electrical apparatus
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