| Patents for H01H 57 - Electrostrictive relays; Piezo-electric relays (896) |
|---|
| 09/26/1990 | EP0277224A4 Piezoelectric switch |
| 08/23/1990 | DE3903882A1 Piezoelectric relay switching matrix |
| 07/03/1990 | US4939401 Method and system for activation of a piezoelectric bender switch |
| 05/15/1990 | CA1269129A1 Piezoelectric switch |
| 04/12/1990 | DE3833158A1 Bistable bending (flexural) transducer |
| 04/12/1990 | DE3833157A1 Monostable piezoelectric position encoder (displacement sensor) |
| 04/10/1990 | US4916349 Latching piezoelectric relay |
| 03/06/1990 | US4907123 Electromechanical transducer type relay |
| 01/09/1990 | US4893048 Multi-gap switch |
| 11/16/1989 | DE3815419A1 Switching device for magnetic resonance imaging equipment (nuclear magnetic resonance investigation equipment) |
| 10/12/1989 | DE3909262A1 Control system, atmospheric cooling device, and a method for operating the cooling device |
| 10/05/1989 | DE3909261A1 Control system for electric hotplate and oven - has piezoelectric relays and programmed control |
| 09/19/1989 | US4868448 Piezoelectric relay switching matrix |
| 08/15/1989 | US4857757 Drive circuit for a two layer laminated electrostriction element |
| 08/10/1989 | WO1989007345A1 Improved piezoelectric relay element and method for driving the same |
| 05/03/1989 | DE3736043A1 Piezoelektrische relais-schaltmatrix Piezoelectric relay-switching matrix |
| 04/04/1989 | US4819126 Piezoelectic relay module to be utilized in an appliance or the like |
| 03/23/1989 | WO1989002659A1 An improved piezoelectric relay |
| 03/07/1989 | CA1250940A1 Zero crossing synchronous ac switching circuits employing piezoceramic bender-type switching devices |
| 01/31/1989 | CA1249620A1 Piezoelectric latching actuator having an impact receiving projectile |
| 11/22/1988 | CA1245253A1 Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture |
| 11/22/1988 | CA1245252A1 Piezoelectric ceramic switching devices and systems and method of making the same |
| 08/10/1988 | EP0277224A1 Piezoelectric switch |
| 07/12/1988 | CA1239177A1 Piezoelectric driven direct current latching relay |
| 07/05/1988 | US4755706 Piezoelectric relays in sealed enclosures |
| 05/03/1988 | US4742263 Piezoelectric switch |
| 05/03/1988 | US4742260 Piezoelectrically driving device |
| 03/02/1988 | EP0257929A2 Piezoelectric switch |
| 03/01/1988 | CA1233494A1 Alternating current driven latching relay and method of operation |
| 02/25/1988 | WO1988001438A1 Piezoelectric switch |
| 02/16/1988 | US4725701 Low voltage vacuum circuit interrupter |
| 01/05/1988 | US4717798 Low voltage vacuum circuit interrupter |
| 01/05/1988 | US4717796 Low voltage vacuum circuit interrupter |
| 12/23/1987 | EP0249864A2 Piezoelectric relays in sealed enclosures |
| 12/22/1987 | US4714847 Advanced piezoeceramic power switching devices employing protective gastight enclosure and method of manufacture |
| 12/22/1987 | US4714807 Low voltage vacuum circuit interrupter |
| 11/10/1987 | US4705923 Low voltage vacuum circuit interrupter |
| 09/29/1987 | US4697118 Piezoelectric switch |
| 08/25/1987 | US4689517 Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture |
| 08/06/1987 | DE3603022A1 Piezoelectric relay |
| 08/06/1987 | DE3603020A1 Piezoelectric relay |
| 07/22/1987 | EP0229343A2 Piezoelectric relay switching circuit |
| 07/21/1987 | US4680840 Method for prepolarizing and centering a piezoceramic power switching device |
| 07/07/1987 | US4678957 Piezoelectric ceramic switching devices and systems and methods of making the same |
| 06/23/1987 | US4675568 For use in a serial printer |
| 06/09/1987 | US4672257 Piezoelectric latching actuator having an impact receiving projectile |
| 06/02/1987 | US4670682 Piezoelectric ceramic switching devices and systems and method of making the same |
| 06/02/1987 | US4669160 Method for prepolarizing and centering a piezoelectric ceramic switching device |
| 05/19/1987 | US4667071 Low voltage vacuum circuit interrupter |
| 04/14/1987 | US4658155 Drive circuit for a piezoelectric actuator |
| 04/14/1987 | US4658154 Piezoelectric relay switching circuit |
| 03/31/1987 | US4654555 Multi pole piezoelectrically operating relay |
| 03/31/1987 | US4654553 Relay with actuator which actuates bistable switching mechanism |
| 12/30/1986 | US4633118 Piezoelectrically actuated high-speed microwave switch |
| 12/02/1986 | US4626698 Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices |
| 11/11/1986 | US4622484 Piezoelectric relay with a piezoelectric longitudinal effect actuator |
| 10/28/1986 | US4620124 Synchronously operable electrical current switching apparatus having increased contact separation in the open position and increased contact closing force in the closed position |
| 10/28/1986 | US4620123 Synchronously operable electrical current switching apparatus having multiple circuit switching capability and/or reduced contact resistance |
| 10/28/1986 | US4620122 Piezoelectric contact driver for circuit interrupters |
| 07/30/1986 | EP0189302A2 Piezoelectric latching actuator having an impact receiving projectile |
| 07/16/1986 | EP0187300A2 Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices |
| 06/25/1986 | EP0185307A2 Improved piezoelectric ceramic switching devices and systems and method of making the same |
| 06/25/1986 | EP0185306A2 Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture |
| 06/17/1986 | US4595855 Synchronously operable electrical current switching apparatus |
| 05/28/1986 | CN85202927U Resonant-reed (fixed on a diaphragm) relay |
| 03/26/1986 | EP0175387A2 Relay with actuator which actuates bistable switching mechanism |
| 02/12/1986 | EP0170958A1 Piezoelectric relay |
| 02/11/1986 | US4570095 Mechanical amplification mechanism combined with piezoelectric elements |
| 02/05/1986 | EP0170173A1 Piezoelectric relay |
| 02/05/1986 | EP0170172A1 Piezoelectric relay |
| 02/04/1986 | US4568849 Driving circuit for piezoelectric bi-morph |
| 12/18/1985 | EP0164683A2 Alternating current driven latching relay and method of operation |
| 12/18/1985 | EP0164682A2 Piezoelectric driven direct current latching relay |
| 12/04/1985 | EP0163497A2 Mechanical high-speed microwave switch |
| 11/12/1985 | US4553061 Piezoelectric bimorph driven direct current latching relay |
| 08/27/1985 | US4538087 Alternating current driven piezoelectric latching relay and method of operation |
| 04/10/1985 | EP0136561A2 Driving circuit for piezoelectric bi-morph |
| 07/24/1984 | US4461968 Piezoelectric relay with magnetic detent |
| 07/03/1984 | US4458171 Piezoelectric relay with tapered magnetic detent |
| 06/12/1984 | US4454442 Piezoelectric relay using Euler lever |
| 01/24/1984 | US4427957 Switch assembly |
| 01/10/1984 | US4425524 For use in telephone status line indicators |
| 12/20/1983 | US4422001 Crystal vibrator actuated relay |
| 12/06/1983 | CA1158288A1 Piezoelectric switch using piezoceramic bending elements and in particular a relay utilizing such elements |
| 09/06/1983 | US4403166 Piezoelectric relay with oppositely bending bimorphs |
| 05/10/1983 | US4383195 Piezoelectric snap actuator |
| 12/29/1982 | EP0067883A1 Piezo-electric relay |
| 07/28/1982 | EP0056624A2 Switch assembly |
| 07/08/1982 | WO1982002282A1 Piezo-electric relay |
| 06/09/1981 | CA1102929A1 Piezoelectric relay construction |
| 07/15/1980 | US4212101 Method for adjusting piezoelectric relay operating gaps |
| 04/29/1980 | US4200779 Device for switching electrical circuits |
| 02/26/1980 | US4190751 Electrical contact switch with an extremely small actuating movement |
| 09/05/1978 | US4112279 Piezoelectric relay construction |
| 06/06/1978 | US4093883 Piezoelectric multimorph switches |
| 11/02/1976 | US3989964 Piezoelectric switch activating means |