| 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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| 02/20/1979 | US4140999 Transformer hot spot detection system |
| 02/07/1979 | EP0000585A1 Automatic control system for processing signals from an overheat monitor of a dynamoelectric machine |
| 01/23/1979 | US4136323 Miniature motor protector |
| 01/02/1979 | US4133016 Apparatus driven by an electric motor and incorporating a safety device |
| 12/19/1978 | US4130850 High speed fault diverter switch for gas-insulated systems |
| 12/19/1978 | CA1044737A1 Sudden pressure relay having seismic protection |
| 12/12/1978 | CA1044313A1 Switching device for the protection of direct current devices |
| 11/28/1978 | US4127847 Monitoring system for aircraft master switch |
| 11/14/1978 | US4125800 Power controller with a modular power output |
| 10/24/1978 | US4121570 Sauna stove |
| 10/03/1978 | US4117713 Particulography as an on-line technique for detection and location of faults within a gas-cooled dynamoelectric machine caused by overheating |
| 09/26/1978 | US4117525 Overpressure protection for vaporization cooled electrical apparatus |
| 09/05/1978 | US4112474 Capacitor protective device |
| 08/01/1978 | US4104692 Device for detecting abnormal temperature in fixer |
| 07/25/1978 | US4103319 Hazard prevention circuit for immersion heaters |
| 07/25/1978 | US4102809 Malonic acid composition for thermoparticulating coating |
| 06/06/1978 | US4092864 Hot spot thermometer |
| 05/30/1978 | US4092693 Temperature sensing protection circuit for ic power chip having thermal hysteresis characteristic |
| 05/23/1978 | US4091266 Electrical circuit for controlling a temperature of a heating element |
| 05/09/1978 | US4089055 Electronic monitoring apparatus |
| 05/09/1978 | US4089031 Safety protection circuit |
| 05/02/1978 | US4087848 Thermally self-protected power switching semiconductor device |
| 04/04/1978 | US4083001 Measurement of motor winding temperature |
| 04/04/1978 | US4082948 Generator monitoring apparatus |
| 03/21/1978 | US4080535 Generator condition monitor for particulate detection |
| 02/21/1978 | US4075678 Fail safe circuit for heat generating device |
| 02/21/1978 | US4075674 Expandable electronic protection system |
| 02/14/1978 | US4074335 Detecting circuit |
| 01/10/1978 | US4068281 Thermally responsive metal oxide varistor transient suppression circuit |
| 01/10/1978 | US4068274 Magnetic switch and circuitry for safety shut down of power equipment |
| 10/11/1977 | US4053938 Temperature sensing transformer primary switch |
| 09/13/1977 | US4048664 Protective circuit for dynamic braking resistors |
| 09/13/1977 | US4048467 Apparatus for generating and regulating welding currents |
| 09/06/1977 | US4046512 Device for indicating overheating in generators |
| 08/16/1977 | US4042966 Motor control circuit |
| 08/09/1977 | US4041396 Environmentally sensitive transmit power maximizing circuitry and method |
| 08/02/1977 | US4039928 Electrical operating circuit having semiconductor device junction temperature monitoring |
| 08/02/1977 | US4039772 Coffee maker |
| 08/02/1977 | US4039771 Coffee maker |
| 07/12/1977 | US4035692 Resistor protection systems |
| 07/12/1977 | US4035612 Circuit for detecting trouble in electric lines connecting relatively movable circuits |
| 07/12/1977 | US4035603 Fault detector system for starting plasma arc working apparatus |
| 07/05/1977 | US4034185 Electric blanket control circuit |
| 06/21/1977 | US4031356 Heat panel safety system |
| 06/07/1977 | US4028736 Motor protection circuit unit |
| 05/10/1977 | US4023072 Electrical protection means and method |
| 05/10/1977 | US4022598 Air conditioning |
| 05/03/1977 | US4021702 Arrangement for detecting deficient operational capability of vacuum switching vessels |
| 04/12/1977 | US4017778 Motor protection circuit |
| 03/01/1977 | US4010403 Radiation protected solid state voltage regulating apparatus |
| 01/04/1977 | US4001650 Method and apparatus for ultrasonic transducer protection |
| 01/04/1977 | US4001644 Sudden pressure relay having seismic protection |
| 12/28/1976 | US4000450 Lubricant pressure responsive control circuit |
| 10/19/1976 | US3987342 Protective circuit utilizing multilevel power supply output |
| 09/07/1976 | US3979255 Method for operating a system with a variable excursion margin setpoint |
| 09/07/1976 | US3978732 Sampling system for power generators |
| 08/10/1976 | US3974430 Motor protection circuit |
| 08/10/1976 | US3973438 Composition for forming thermo-particulating coating which protects electrical apparatus |
| 06/29/1976 | US3967169 Switching device for the protection of direct current devices |
| 06/22/1976 | US3965396 Condition responsive control circuit |
| 06/22/1976 | US3965395 Power interrupter for electrical devices |
| 05/25/1976 | US3959692 Monitor and controller for heating a resistive element |
| 03/30/1976 | US3947658 Protector for the plate-shaped heating element |
| 03/02/1976 | US3942030 Arrangement for detecting dielectric breakdowns in metal-clad high-voltage switching and transmission installations |
| 03/02/1976 | US3941975 Glass panel circuit breaker |
| 02/03/1976 | US3936702 Electrical protection means |
| 01/27/1976 | US3935513 Protective circuit for transistor amplifier |
| 01/06/1976 | US3931560 Motor control system and electrical switch constructions therefor or the like |