| 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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| 04/18/1989 | US4823224 Rapid pressure rise circuit |
| 04/13/1989 | DE3821460A1 Power semiconductor element and method for producing it |
| 04/12/1989 | EP0310798A2 Shock harzard protection system |
| 04/04/1989 | CA1252176A1 Circuit breaker low oil trip and/or lockout apparatus |
| 03/23/1989 | DE3730385A1 Overheating protection device |
| 03/21/1989 | US4814828 Light source for photographic color printing |
| 03/21/1989 | US4814699 Method for partial discharge detection and breaking spark measuring in dynamo-electric high-voltage machines, and an apparatus for performing the method |
| 03/08/1989 | EP0305856A2 Process to register a current flowing through the human body between a phase and a neutral conductor, and circuitry for carrying out the process |
| 02/28/1989 | US4808965 Thermal protector |
| 02/28/1989 | US4807587 Process of forming openings |
| 02/23/1989 | WO1989001718A1 Protective switching device for electrical appliances |
| 02/01/1989 | EP0301055A1 Protective device for electrically driven apparatus |
| 01/31/1989 | CA1249652A1 Sudden pressure relay supervisory apparatus |
| 01/19/1989 | DE3823280A1 Elektrisch betriebenes heizpaneel An electrically operated heating panel |
| 01/18/1989 | EP0299115A1 Shock protective circuit with electrical latch for small appliances |
| 01/18/1989 | EP0299114A1 Shock protection device for small appliances |
| 01/17/1989 | US4799166 Apparatus for automatically analyzing gases in oil |
| 01/17/1989 | US4799124 Shock hazard protector for hair dryers |
| 01/17/1989 | US4798968 Battery disconnect apparatus |
| 01/11/1989 | EP0298203A1 Electrical monitoring device for detecting stability impaining damages to pylons |
| 01/10/1989 | US4797772 Immersion detector circuit interrupter |
| 01/05/1989 | DE3718608A1 Electrical tripping device |
| 01/03/1989 | CA1248179A1 Protected input/output circuitry for a programmable controller |
| 12/27/1988 | US4794261 Radiation protection circuit for protection against gamma ray and neutron radiation |
| 12/21/1988 | EP0295599A1 Electrical trip device |
| 12/21/1988 | CN87103956A Portable single-tube multi-wire speaking protective device |
| 12/15/1988 | WO1988010019A1 Electrical circuit breaker |
| 12/14/1988 | EP0294591A1 Measuring of the integral temperature in electrical machines |
| 12/13/1988 | US4791523 Protecting an icemaker against overcurrent damage |
| 12/13/1988 | US4791519 Shock protective circuit with electrical latch for small appliances |
| 12/07/1988 | EP0293376A1 Protective circuit for electric apparatus |
| 11/30/1988 | CN87206892U Multipoint overtemperature protector |
| 11/29/1988 | US4788417 Electrical heating pad |
| 11/02/1988 | CN87209082U Kilowatt-hour meter protector with electric shockproof and anti-fraudulent use |
| 10/18/1988 | US4779161 Multi-driver integrated circuit |
| 10/05/1988 | CN87207407U 相位型保护器 Phase type of protection |
| 10/04/1988 | US4775245 Multi-phase electronic temperature controller |
| 09/21/1988 | CN87210003U Watthour meter capable of preventing electricity-stealing and electric shocking |
| 09/07/1988 | WO1988006813A1 Immersion detector circuit interrupter |
| 08/31/1988 | CN87204017U Fireproof protector for electric appliance |
| 08/18/1988 | DE3703311A1 Process for identification of pipes, iron or cables laid under plaster during performance of drilling work in walls, ceilings or floors and device for carrying out the process |
| 08/18/1988 | DE3702970A1 Schutzeinrichtung fuer elektrisch betriebene geraete Protective device for electrically operated equipment at |
| 08/11/1988 | WO1988005974A1 Protective device for electrically driven apparatus |
| 07/12/1988 | US4757414 Protective devices for electrical equipment and components |
| 07/06/1988 | CN86102108B Switching device isolated by gas |
| 06/22/1988 | EP0271544A1 Electrical cut-out system |
| 06/16/1988 | WO1988004488A1 Multi-phase electronic temperature controller |
| 06/16/1988 | DE3641083A1 Plug device having a protection circuit |
| 06/14/1988 | US4751603 Safety devices |
| 06/08/1988 | CN85205360U Phase-sensitive rectification type pulsating current mode protective cut-out |
| 05/17/1988 | US4745571 Modular electronic temperature controller |
| 05/04/1988 | EP0164411B1 Peak load access in a two-way, e.g. catv contention system |
| 04/26/1988 | US4740861 Thermal protection device for a dual input voltage lamp transformer/ballast apparatus |
| 04/19/1988 | US4739232 Power unit for a battery-driven toy |
| 04/13/1988 | CN86207913U Electric learage switch of dynamic state and automatic |
| 04/05/1988 | CA1234905A1 400 hz aircraft ground power supply |
| 03/29/1988 | US4734822 Electronic circuit ensuring protection against electrical discharge, in particular for hairdryers |
| 03/09/1988 | EP0258252A1 Electrical heating pad |
| 03/02/1988 | CN86201128U Isolation-bursting and leakage-detecting relay for mine |
| 01/26/1988 | CA1232017A1 Crack detector for electrically conductive windshield |
| 01/14/1988 | WO1988000405A1 Electrical cut-out system |
| 01/14/1988 | DE3621528A1 Elektrische abschalteinrichtung The electrical switchgear |
| 12/30/1987 | CN86104241A Toroidal core a.c. magnetic biasing circuit |
| 12/08/1987 | US4712154 Shock protective circuit with mechanical latch for small appliances |
| 12/02/1987 | EP0247080A1 Device and method of protecting circuits against changes in operating conditions |
| 11/24/1987 | US4709293 Shock hazard protection system |
| 11/24/1987 | US4709164 Circuit for the continuous watching of the grounding resistance of electrical appliances |
| 11/17/1987 | US4707686 Over temperature sensing system for power cables |
| 11/10/1987 | US4706153 Leakage detecting device for electrical appliance |
| 11/10/1987 | US4705412 Protection circuit for drive transistor of printer head |
| 11/07/1987 | CN86207848U Fully automatic multipurpose electric protection device |
| 11/04/1987 | CN85107841A Security switch without threshold |
| 10/28/1987 | CN86207845U Integrated circuit (ic) short-circuit automatic protector |
| 10/28/1987 | CN86205727U Micro-energy consumption electric protector for residence |
| 10/28/1987 | CN86201827U Three-preventing (electric shock, power over-voltag and impulse power over-voltage) electric protector |
| 10/27/1987 | US4702553 Fiber-optical sensor for detecting electric arc-discharges |
| 10/27/1987 | CA1228653A1 Electrical heating apparatus protected against an overheating condition and a temperature sensitive electrical sensor for use therewith |
| 10/21/1987 | CN87200089U Flow-controlled relay protecting device |
| 10/06/1987 | US4698655 Overvoltage and overtemperature protection circuit |
| 09/30/1987 | EP0239209A1 A power unit for a battery-driven toy |
| 09/24/1987 | WO1987001902A3 Protective circuit for electric apparatus |
| 09/22/1987 | EP0164407A4 Shock hazard protection system. |
| 09/09/1987 | EP0235859A2 Shock protective circuit with mechanical latch for small appliances |
| 08/18/1987 | US4688136 Gas insulated switchgear |
| 08/18/1987 | US4687906 Portable electric hair dryer with electric shock protection circuit |
| 08/18/1987 | US4687622 Nuclear event detector |
| 08/11/1987 | CA1225426A1 Electrical heating apparatus protected against an overheating condition |
| 08/04/1987 | US4685018 Arc detector for gas insulated electrical apparatus |
| 08/04/1987 | US4684825 400 Hz aircraft ground power supply |
| 07/28/1987 | US4683464 Safety monitor means and method |
| 07/22/1987 | EP0229044A1 A method and device for detection of an electric load |
| 07/21/1987 | US4681489 Process of forming openings |
| 07/21/1987 | CA1224538A1 Automatic fire detection for a microwave oven |
| 07/15/1987 | EP0228613A1 Process for the detection of partial discharges and for measuring arc disruption in dynamo-electrical high-voltage machines, and circuit for carrying it out |
| 06/30/1987 | US4677281 Electric heating apparatus with integrated solid state comfort control and overheat protection |
| 06/24/1987 | CN86206916U Automatic high-capacity leakage safety switch |
| 06/24/1987 | CN86205392U Safety cut-out |
| 06/23/1987 | US4675777 Temperature-responsive circuit for load control apparatus |
| 06/17/1987 | CN86202663U Safety electric source device |
| 06/11/1987 | DE3604118A1 Personenschutzschaltung fuer elektrische geraete Personal Protective circuit for electrical equipment at |