| 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) |
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| 04/28/1992 | CA1299623C Insulated electrical heating element equipped with a safety device for detecting faults in the electrical insulation |
| 04/22/1992 | EP0480937A1 Loss of neutral or ground protection circuit. |
| 04/21/1992 | US5107447 Abnormality diagnosing system and method for a high voltage power apparatus |
| 04/01/1992 | EP0477959A2 Overload current protection apparatus |
| 04/01/1992 | CN1059994A Gas insulated electric apparatus |
| 03/25/1992 | EP0476502A2 Gas insulated electric apparatus |
| 03/25/1992 | CN2100051U Multifunctional trackable protector for electric machine |
| 03/24/1992 | US5099381 Enable circuit with embedded thermal turn-off |
| 03/19/1992 | DE4029175A1 Electrical protective device for electro-medical appts. - contains isolation transformer and resistive insulation monitor with safety switching |
| 03/11/1992 | CN2098749U Integred controlling and protecting device for safety of motor |
| 02/18/1992 | US5089735 Direct-current motor |
| 02/06/1992 | WO1992002064A1 Immersion detection circuit interrupter |
| 01/29/1992 | CN2094815U Sensing type digital display multi-function pressure regulator |
| 01/23/1992 | DE4118219A1 Monitoring system for powered sliding doors - has frequency of generator monitored to control operation |
| 01/22/1992 | CN2093580U Multi-functional electronic-controlling electric frying-pan made of cast-iron |
| 01/21/1992 | US5083273 Temperature detection for electromagentic clutch of vehicle |
| 01/15/1992 | EP0466132A2 Protection device for the protection of electronic systems against gamma-rays |
| 01/07/1992 | US5079542 Abnormal temperature detector for electronic apparatus |
| 01/07/1992 | US5078627 Voltage regulator and rectifier having over-temperature protection |
| 12/26/1991 | WO1991020116A1 Low impedance power conditioner apparatus and method |
| 12/18/1991 | EP0461982A1 Method for extension of the life time of a circuit with MOS-components subject to "Gamma" radiation |
| 12/17/1991 | US5073838 Method and apparatus for preventing damage to a temperature-sensitive semiconductor device |
| 12/04/1991 | EP0459102A1 Method and apparatus for monitoring the draft ratio in a drafting machine of a spinning machine |
| 12/04/1991 | EP0458783A1 Improvements in or related to circuit breakers used with electrical apparatus |
| 12/03/1991 | US5070322 An overheating detection circuit including a reversely biased junction having a temperature dependent reverse leakage current for detecting overheating of a power integrated circuit |
| 11/14/1991 | WO1991017596A1 Loss of neutral or ground protection circuit |
| 11/13/1991 | EP0398974A4 Rapid pressure rise circuit |
| 11/07/1991 | DE4112648A1 Temp. monitor with safety switch for electric drive - interrupts signal from sensor to processor brought into operation after run-up delay to operate contactor |
| 11/05/1991 | US5063303 Soft start circuit |
| 10/23/1991 | CN2087344U New-type protector against embezzling electricity |
| 10/22/1991 | CA1291264C Multi-phase electronic temperature controller |
| 10/16/1991 | EP0451886A1 Sensitiser for differential safety switches in electric plants for supplying consumers |
| 10/15/1991 | CA1290793C Thermal protector |
| 10/09/1991 | EP0449822A1 Electronic control and protection device. |
| 10/02/1991 | CN1055066A Power apparatus and method of location of fault in power apparatus |
| 09/29/1991 | CA2018339A1 Grounding detection circuit |
| 09/26/1991 | DE4008970A1 Protection unit for electric insulated appliance without earth - has fault or differential current switch with protection conductor monitor tripping upon under voltage |
| 09/25/1991 | CN2085572U Supply cable arrangement in explosion and fire dangerous site |
| 09/11/1991 | EP0446061A2 Abnormal temperature detector for electronic apparatus |
| 09/11/1991 | EP0445990A2 Power apparatus and method of location of a fault in a power apparatus |
| 09/04/1991 | EP0444826A2 Protection circuit for a semiconductor device |
| 09/03/1991 | CA1288462C Electronic circuit ensuring protection against electrical discharge, in particular for hairdryers |
| 08/14/1991 | EP0441009A1 Electric circuit unit and manufacturing method thereof |
| 08/13/1991 | US5039842 Mold heater moisture detection and dry out apparatus |
| 07/24/1991 | EP0437658A1 Protection device for an electric machine |
| 07/24/1991 | EP0437657A1 Protection device for an electric machine |
| 07/24/1991 | CN2081596U Electronic thermorelay |
| 07/23/1991 | US5034726 Portable ground fault detector |
| 07/16/1991 | CA1286352C Thermal protection device for a dual input voltage lamp transformer/ballastapparatus |
| 07/10/1991 | CN1013152B Core monitor that uses rotor shaft voltage |
| 07/03/1991 | EP0435405A1 Electronic safety device for connections to earth |
| 07/02/1991 | US5029037 Safe mains voltage supply outlet and method |
| 06/26/1991 | CN2079675U Explosion -proof dual-speed local ventilator |
| 06/19/1991 | EP0432925A2 Method and apparatus for sensing thermal stress in integrated circuits |
| 06/19/1991 | CA2025286A1 Voltage regulator and rectifier having over-temperature protection |
| 06/12/1991 | EP0432085A2 Protection for electrically driven device |
| 06/12/1991 | EP0431832A2 Apparatus and method for controlling the operation of a semiconductor device |
| 06/12/1991 | EP0431812A2 Luminous tube protection circuit |
| 06/11/1991 | US5023744 Electrotechnical |
| 06/05/1991 | CN2078500U Limiter for electric power |
| 06/05/1991 | CA2029141A1 Thermal protection circuit for an integrated circuit subscriber line interface |
| 05/29/1991 | EP0429282A2 Thermal protection circuit for a power semiconductor switch |
| 05/23/1991 | CA2026980A1 Method and apparatus for sensing thermal stress in integrated circuits |
| 05/15/1991 | EP0427085A1 Enable circuit with embedded thermal turn-off |
| 05/08/1991 | EP0426103A2 Electronic circuit device for protecting electronic circuits from unwanted removal of ground terminal |
| 05/07/1991 | US5014154 Electrical safety device |
| 05/07/1991 | US5013891 Personal appliance having shock protection circuitry |
| 04/30/1991 | US5012382 Low impedance power conditioner apparatus and method |
| 04/30/1991 | CA1283705C Crack detector for heated glass panel |
| 04/23/1991 | US5010321 Nuclear event detectors |
| 04/18/1991 | CA2000954A1 Shock-proof mains voltage supply outlet and method |
| 04/16/1991 | US5008736 Thermal protection method for a power device |
| 04/11/1991 | DE3932292A1 Safety circuit for electric bed warmer or cushion - uses temp. fuse heated by working resistance in series with heating conductors |
| 04/10/1991 | EP0421892A1 Circuit breaker with an electronic release |
| 04/10/1991 | CN2074943U Full-automatic electric appliances burning-proof device |
| 03/28/1991 | DE3931373A1 Car facsimile appts. with temp. protection - has temp. sensor signals supplied to evaluator and control unit for operational voltage control |
| 03/26/1991 | US5003486 Programmable safety electrical socket controller |
| 03/20/1991 | EP0417719A1 Anti-electric shock safety system, for electric machinery and installations |
| 03/19/1991 | US5001593 Circuit configuration for temperature monitoring of power switching transistors integrated in a semiconductor circuit |
| 03/14/1991 | CA2024644A1 Circuit breaker comprising an electronic trip device |
| 03/13/1991 | EP0416716A2 Water sensing type power breaker circuit |
| 02/19/1991 | US4994750 Use of capacitance for protecting against overheating of a waterbed heater |
| 02/19/1991 | US4994651 Solid state temperature dependent direct voltage interrupter for a heater circuit |
| 02/05/1991 | US4991105 Microprocessor controlled ground system monitor |
| 01/23/1991 | EP0409214A2 Overheating detection circuit for use with a power integrated circuit |
| 01/23/1991 | CN2070048U Overtemperature protector for motor |
| 01/09/1991 | EP0406448A1 Apparatus for detecting abnormal temperature of regenerative resistor |
| 01/01/1991 | US4982307 Thermal protection circuit for an integrated circuit subscriber line interface |
| 12/26/1990 | CN2068291U Three-phase motor protector |
| 12/12/1990 | EP0401273A1 Apparatus for supervising objects with regard to overheating. |
| 12/06/1990 | DE3918239A1 Safety system for domestic appliances - uses fire and smoke sensors which can interrupt the mains supply |
| 11/29/1990 | DE3916856A1 Locating equipment preventing drilling of concealed metal parts - has circuit detecting low current in lines to drill and metal part and activating current cut=off |
| 11/28/1990 | EP0399754A2 Semiconductor device protection circuit |
| 11/28/1990 | EP0398974A1 Rapid pressure rise circuit. |
| 11/20/1990 | US4971921 Semiconductor device and method of manufacturing the same |
| 11/13/1990 | US4970497 Method and apparatus for sensing thermal stress in integrated circuits |
| 10/31/1990 | DE3913925A1 Sensor circuit for hair=dryer safety - uses automatic cut=out relay coupled to centre tap of resistive voltage divider |
| 10/30/1990 | US4967308 Enhanced safety device for an electrical appliance |
| 10/24/1990 | EP0393224A1 Circuitry for controlling the temperature of integrated power switching transistors in a semi-conductor circuit |
| 10/23/1990 | US4965693 Electrical appliance with electrical hazard protection |