Patents for H01H 51 - Electromagnetic relays (5,199) |
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01/22/1991 | US4987512 Solid state circuit protector |
01/22/1991 | US4987396 Electromagnetic switch, in particular for starting devices of internal-combustion engines |
01/17/1991 | DE3922576A1 Electrical switch element esp. reed relay - having cast insulation contg. soft magnetic particles |
01/09/1991 | CN2069167U Autolock contactor without energy consumption |
01/08/1991 | US4983941 Electromagnetically operated switch |
01/08/1991 | US4983940 Electromagnetic switch |
12/27/1990 | WO1990016077A1 Auxiliary switch for an electromagnetic switching device |
12/19/1990 | CN2067862U Relay with bistable memory performance |
12/19/1990 | CN2067861U Splicing ac contactor |
12/18/1990 | US4978935 Electromagnetic relay |
12/05/1990 | EP0400537A2 Polarized armature contact relay |
12/04/1990 | US4975666 Polarized electromagnetic relay |
12/04/1990 | US4975623 Electromagnetic relay for transmitting operating sounds thereof |
12/04/1990 | US4975545 Sealed relay assembly |
11/22/1990 | EP0398627A1 Water cover arrangement for a solenoid apparatus |
11/21/1990 | CN2066197U Double-way self-locking alternating current contactor |
10/31/1990 | CN2064938U Electricity-saving device for non-pressure operation of a.c. contactor coil |
10/23/1990 | US4965542 Magnetic switch for coaxial transmission lines |
10/18/1990 | DE3911906A1 Compact relay with monostable anchor element - moves in guide rail perpendicular to coil axis, and has contact and coil leads in separate compartments insulated from each other |
10/17/1990 | EP0392302A2 Motor monitoring switch |
10/17/1990 | EP0392200A1 Safety door latch for electrical appliances |
10/17/1990 | CN2064100U Contactor of detachable contact system |
10/17/1990 | CN2064099U Permanent-magnet energy-saving contactor |
10/10/1990 | CN2063688U Self-lock contactor |
10/09/1990 | CA1275138A1 Electromagnetic relay |
10/04/1990 | DE4010136A1 Electromagnetic protection switch assembly - uses locating device between coil carrier and cover incorporating contact carrier |
10/03/1990 | EP0390553A1 Core and contact assembly for a coaxial engine starter |
10/03/1990 | EP0390372A2 Polarized electromagnetic relay |
10/03/1990 | CN2063289U Energy-saving contactor without counter-magnetism winding |
09/25/1990 | US4959627 Electromagnet relay |
09/20/1990 | WO1990010967A1 Solid state circuit protector |
09/20/1990 | DE3908319A1 Electromagnetic contactor for machinery or air conditioning |
09/11/1990 | US4956623 Electromagnetic relay |
09/05/1990 | CN1045196A Energy-saving noise-free ac contactor |
08/29/1990 | CN2061332U No-voltage operating alternating-current contactor |
08/21/1990 | US4951016 Polarized electromagnetic multi-contact relay |
08/09/1990 | DE4003109A1 Three=phase inverter switch |
08/08/1990 | EP0381542A1 Protected phase-reversal contactor using a multifunctional transmission system for the control of confirmation switches |
08/07/1990 | US4947285 Reversing circuit for direction reversal in direct current drives |
08/07/1990 | US4947146 Electromagnetic contactor |
08/03/1990 | CA2007196A1 Protected converter invester with multifunctional transmission system to control confirmation switches |
08/01/1990 | CN1044362A D.c. position detented contactor |
07/26/1990 | WO1990008419A1 Terminal box having built-in connection switching contactor for three-phase induction motor |
07/26/1990 | DE3940242A1 Betaetigungssolenoid Actuating solenoid |
07/25/1990 | CN2059764U Electricity economizer of ac contactor |
07/10/1990 | US4940958 Polarized electromagnetic apparatus |
07/04/1990 | CN2059021U Symmetry bistable relay |
06/28/1990 | DE3843646A1 Elektromagnetischer schalterantrieb Electromagnetic switch drive |
06/27/1990 | EP0375442A2 Coaxial starter with a core and contact terminal assembly |
06/27/1990 | EP0375378A1 Pinion shifting arrangement for a starter |
06/19/1990 | CA1270512A1 Electromagnet having a pivoted polarized armature |
06/13/1990 | EP0373109A1 Polarised printed-circuit board relay |
06/12/1990 | US4933655 Mounting structure of a reed switch for an eddy-current indicator |
06/12/1990 | US4933654 Polarized electromagnetic relay |
06/06/1990 | CN1042796A Lock mechanism for limiting contact maker |
05/31/1990 | WO1990005989A1 Armature/actuator for a relay |
05/30/1990 | CN2057778U Weak current-controlling remanence contactor |
05/23/1990 | EP0369844A1 Locking mechanism for a current-limiting contactor |
05/17/1990 | WO1990005374A1 Improvements in electromagnetic devices |
05/10/1990 | DE3837666A1 Relay |
05/09/1990 | CN2057029U Self-locking electricity-saving safety switch |
05/02/1990 | CN1041848A Double-coil electromagnetic switch |
05/01/1990 | US4922370 Automatically resetting circuit protector |
05/01/1990 | US4922369 Circuit protector |
05/01/1990 | US4922216 Electromagnetic switching device |
04/25/1990 | EP0365518A2 Magnetic circuit shaped essentially as a flat rectangle with an air gap |
04/18/1990 | EP0363410A1 Improvements in and relating to electrical components |
04/18/1990 | CN2056277U Mechanical locker ac contactor |
04/12/1990 | DE3834283A1 Change-over relay for DC motors having anticlockwise and clockwise control |
04/11/1990 | CN2055988U Contactor suitable for fitting with capacitor |
04/04/1990 | EP0361638A2 Microwave C-switches and S-switches |
04/04/1990 | EP0361442A2 Relay device for switching radio frequency signal |
04/04/1990 | EP0361392A2 Polarized electromagnetic relay |
03/28/1990 | EP0360271A2 Electromagnetic polar relay |
03/28/1990 | CN2055290U 节能接触器 Saving contacts |
03/28/1990 | CN2055289U Pin-lift alternating-current contactor |
03/28/1990 | CN1040886A Bistable magnetic actuator and circuit breaker |
03/27/1990 | US4912438 Electromagnetic relay |
03/21/1990 | CN1007299B Relay switch apparatus |
03/07/1990 | CN2054205U Electromagnetic type electrical controller with under-voltage protection |
03/07/1990 | CN2054204U Electric appliances with shock-resistant properties in drilling equipment |
03/07/1990 | CN2054203U 双稳态电磁继电器 Bistable electromagnetic relays |
02/28/1990 | EP0355817A2 Electromagnetic relay |
02/28/1990 | CN2053793U 节能接触器 Saving contacts |
02/28/1990 | CN2053792U Automatically releasing residual magnetism type contactor |
02/22/1990 | WO1990001788A1 A bistable magnetic actuator and a circuit breaker |
02/14/1990 | EP0354803A1 A bistable magnetic actuator and a circuit breaker |
02/14/1990 | CN2052949U Memory self-locking relay |
02/14/1990 | CN2052948U Ac/dc common used consumption-free holding contactor |
02/14/1990 | CN1039642A Electromagnetic switch for starter mechanisms of internal-combustion engines |
02/13/1990 | US4901046 Manually actuated on-off switch with electromagnetic release |
02/08/1990 | WO1990001211A1 An electromagnetic switch for internal combustion engine starters |
02/06/1990 | CA1265564A1 Integrated power relay for electric starter motor |
02/01/1990 | DE3925137A1 Betaetigungssolenoid Actuating solenoid |
01/31/1990 | EP0352884A2 Relay for wideband signals |
01/31/1990 | CN2052148U Currentless ac/dc contactor of coil in motion |
01/30/1990 | US4897625 Remotely controllable circuit breaker |
01/25/1990 | DE3824801A1 Elektromagnetischer schalter fuer andrehvorrichtungen von brennkraftmaschinen Electromagnetic switch for starting devices of internal combustion engine- |
01/24/1990 | EP0351547A2 Sealed relay assembly |
01/24/1990 | EP0185769B1 Electromagnetic actuator |