| Patents for H01H 81 - Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting (367) |
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| 09/01/1994 | WO1994019815A1 Improvements relating to electric switches |
| 09/01/1994 | CA2155961A1 Improvements relating to electric switches |
| 08/03/1994 | CN2173457Y Mercury overcurrent relay |
| 07/06/1994 | CN1089060A Overload protective apparatus utilizing a bimetal |
| 03/02/1994 | CN2158135Y Ten-thousands times safety tube |
| 02/02/1994 | CN2155068Y Miner's lamp short-circuit protecting electromagnetic relay device |
| 07/28/1993 | CN1074782A Overload cut off self-lock type relay |
| 06/24/1993 | DE4142716A1 Thermal cut=out switch - has bimetallic disc that responds to electrical heating provided by resistive contact carrying element. |
| 04/27/1993 | US5206622 Protector device with improved bimetal contact assembly and method of making |
| 02/02/1993 | US5184269 Overload protective device |
| 03/04/1992 | EP0473353A2 Circuit breaker |
| 01/29/1992 | CN1058292A Over load automatic breaking device |
| 10/16/1991 | EP0451678A2 Overload protective device |
| 10/15/1991 | CA1290791C Electronic sectionalizer with resettable actuator |
| 09/17/1991 | US5049849 Circuit breaker |
| 07/24/1991 | CN2081572U Current-limited protector |
| 07/24/1991 | CN2081571U Special electricity-using control switch for hotel |
| 07/24/1991 | CN2081570U One-phase overload break circuit |
| 07/24/1991 | CN2081569U Heat two-metal single-contact current-limited protector |
| 07/24/1991 | CN2081568U Current-limited safety unit |
| 05/14/1991 | US5015985 Thermally responsive switch |
| 05/07/1991 | US5014035 Bimetallic circuit breaker with insulated terminal assembly |
| 02/13/1991 | CN2071386U Overload automatic cut-off device |
| 01/30/1991 | CN2070499U Fixed quantity power supply automatic safety switch |
| 11/21/1990 | CN2066198U Domestic current-limiting relay |
| 09/28/1990 | CA2012439A1 Sf6 puffer recloser |
| 09/05/1990 | EP0385201A1 Cycling bimetal circuit breaker |
| 05/09/1990 | CN2057030U Oil-immersion heat protector |
| 05/09/1990 | CN2057029U Self-locking electricity-saving safety switch |
| 04/25/1990 | CN2056544U Protector for miniature three-phase electric machine |
| 04/03/1990 | US4914414 Thermally responsive switch |
| 03/13/1990 | US4908595 Motor protector |
| 03/07/1990 | CN2054206U Current limiter |
| 11/29/1989 | CN2048623U Current limiter |
| 11/14/1989 | US4879805 Method for making a circuit interrupter device |
| 08/09/1989 | CN2042628U Miniature current-limiter |
| 08/09/1989 | CN2042627U Civil current-limiting auto-alarming switch box |
| 06/27/1989 | US4843363 Three-phase thermal protector |
| 05/17/1989 | CN2037872U Domestic load-limiting relay |
| 12/06/1988 | CA1246129A1 Protected refrigerator compressor motor systems and motor protectors therefore |
| 11/09/1988 | EP0290199A2 Circuit interrupter device and method for making |
| 10/25/1988 | US4780698 Circuit interrupter device and method for making |
| 08/10/1988 | EP0277610A2 Rotary switch for electrical devices, especially for domestic devices |
| 07/20/1988 | CN86207511U Vacuum current-limiter |
| 06/01/1988 | CN87207491U Self-holding automatic reset current-limit relay |
| 03/22/1988 | US4733323 Photothermic and time switch devices for outdoor low tension power supply system |
| 12/15/1987 | US4713717 Protected refrigerator compressor motor systems and motor protectors |
| 11/10/1987 | US4706152 Protected refrigerator compressor motor systems and motor protectors therefor |
| 10/20/1987 | US4701824 Protected refrigerator compressor motor systems and motor protectors therefor |
| 09/30/1987 | CN86206324U Fully automatic current-limiting relay |
| 07/01/1987 | EP0226663A1 Thermostat |
| 01/31/1987 | CN86102175A Household electric power control dervice |
| 09/17/1986 | EP0194892A2 Protected refrigerator compressor motor systems |
| 08/30/1983 | USRE31367 Motor starting and protecting apparatus |
| 01/04/1983 | US4367508 Current limiter |
| 12/21/1982 | CA1138026A1 Motor starting and protecting apparatus |
| 09/29/1981 | US4292611 High-speed automatic tripping contactor |
| 09/01/1981 | US4287499 Current interrupting apparatus having improved contact life |
| 04/01/1981 | EP0025918A1 Current limiter |
| 10/15/1980 | EP0017575A1 Contactor with rapid opening in the event of a fault |
| 05/30/1978 | US4092573 Motor starting and protecting apparatus |
| 04/25/1978 | US4086558 Motor protector and system |
| 04/11/1978 | US4084202 Combination starter-protector device, method of protecting a dynamoelectric machine, and circuit |
| 07/26/1977 | US4037316 Method of assembling temperature responsive resistance member |
| 05/25/1976 | US3959762 Thermally responsive electrical switch |
| 03/23/1976 | US3946352 Thermally responsive switch |
| 02/03/1976 | US3936792 Circuit breaker apparatus |