| Patents for H01H 57 - Electrostrictive relays; Piezo-electric relays (896) |
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| 04/04/2000 | US6046418 Drive system for switch, especially relay |
| 02/24/2000 | DE19837059A1 Auslösevorrichtung für einen Schutzschalter, insbesondere einen Fehlerstrom-Schutzschalter Tripping device for a circuit breaker, especially a residual current circuit breaker |
| 02/23/2000 | EP0981148A2 Trip device for a circuit breaker, especially for an earth fault circuit breaker |
| 02/15/2000 | US6025671 Piezoelectric actuator |
| 02/09/2000 | EP0978148A1 Piezoelectric actuator |
| 12/22/1999 | EP0965147A1 Low component count release mechanism |
| 12/15/1999 | CN1238544A Antenna-switching device between transmitting and receiving stage |
| 12/02/1999 | WO1999062090A1 Piezo ceramic operated mechanism |
| 10/27/1999 | CN1233343A Micro-relay and method for manufacturing the same |
| 10/06/1999 | EP0948019A1 Antenna switch between transmitter and receiver stages |
| 09/30/1999 | DE19813128A1 Electromagnetic relay for controlling electrical currents and voltages can switch high levels of electrical power with adequate contact separation and minimal control power and internal heat generation |
| 09/14/1999 | US5952903 Operation of residual current devices |
| 08/12/1999 | WO1999040596A1 Piezoelectric relay |
| 07/29/1999 | WO1999038220A1 Piezoelectric actuator |
| 07/29/1999 | DE19802302A1 Piezoelectric actuator used e.g. for a fuel injection valve, a hydraulic valve, a micro-pump or an electrical relay |
| 06/16/1999 | EP0923099A1 Micro-relay and method for manufacturing the same |
| 06/03/1999 | WO1999027414A1 Display device |
| 04/29/1999 | DE19804194C1 Piezoelectric relay arrangement |
| 04/07/1999 | EP0907212A1 Ceramic element, method of manufacturing ceramic element, display, relay device, and capacitor |
| 03/23/1999 | US5886603 Electrically controlled tripping mechanism |
| 03/23/1999 | US5886428 Switch, especially relay |
| 02/25/1999 | DE19736247A1 Piezoelectric component for activation of mechanical process |
| 02/25/1999 | DE19733609A1 Electric switch, especially for motor vehicle |
| 02/10/1999 | CN2307361Y Flashing relay |
| 01/19/1999 | US5861702 Piezoelectrically actuated ground fault interrupter circuit apparatus |
| 11/04/1998 | EP0769199B1 Operation of residual current devices |
| 10/21/1998 | EP0769198B1 Electrically controlled tripping mechanism |
| 10/06/1998 | US5818148 Electromechanical switch |
| 09/30/1998 | EP0867043A1 Metal-electroactive ceramic composite transducers |
| 09/30/1998 | CN1040049C Micromechanical relay with hybrid actuator |
| 09/17/1998 | WO1998040917A1 Low component count release mechanism |
| 09/02/1998 | EP0861496A1 Electric switching device and display device using same |
| 06/04/1998 | WO1998024130A1 Ceramic element, method of manufacturing ceramic element, display, relay device, and capacitor |
| 05/20/1998 | DE19648726A1 Piezoelectric drive element |
| 05/14/1998 | DE19646710A1 Optical deflector with piezoelectric drive or positioning element |
| 05/13/1998 | CN1181606A Switch |
| 04/22/1998 | CN1179616A Driving system for switch |
| 03/25/1998 | EP0831509A2 Driving system for switches, particularly for relays |
| 03/19/1998 | WO1998011586A1 Electric switching device and display device using same |
| 03/17/1998 | US5729077 Metal-electroactive ceramic composite transducer |
| 03/05/1998 | WO1998009312A1 Micro-relay and method for manufacturing the same |
| 02/25/1998 | EP0825630A2 Switch, particularly relay |
| 01/08/1998 | DE19627038A1 Piezoelectric actuator for valve or electric switch |
| 11/25/1997 | US5691593 Piezoelectric/electrostrictive actuator having at least one piezoelectric/electrostrictive film |
| 10/01/1997 | CN1161102A Operation of residual current apparatus |
| 09/10/1997 | EP0794543A2 Electromechanical switch |
| 09/09/1997 | US5666258 Micromechanical relay having a hybrid drive |
| 08/13/1997 | EP0685109B1 Micromechanical relay with hybrid actuator |
| 08/06/1997 | CN1156517A Electrically controlled tripping mechanism |
| 06/19/1997 | WO1997022154A1 Metal-electroactive ceramic composite transducers |
| 05/20/1997 | US5631040 Method of fabricating a piezoelectric/electrostrictive actuator |
| 04/23/1997 | EP0769199A1 Operation of residual current devices |
| 04/23/1997 | EP0769198A1 Electrically controlled tripping mechanism |
| 04/22/1997 | US5622748 Method of fabricating a piezoelectric/electrostrictive actuator |
| 01/07/1997 | US5592042 Piezoelectric/electrostrictive actuator |
| 12/31/1996 | US5589725 Monolithic prestressed ceramic devices and method for making same |
| 08/08/1996 | DE4444070C1 Micro-mechanical bending element e.g. for adjustment has silicon tongue above piezoceramic body |
| 06/13/1996 | DE4443520A1 Fault-current circuit breaker |
| 04/17/1996 | CN1120874A Monolithic prestressed ceramic devices and method for making same |
| 03/06/1996 | CN1118199A Micromechanical relay with hybrid actuator |
| 01/24/1996 | EP0693788A1 Bending actuator |
| 01/18/1996 | WO1996001489A1 Operation of residual current devices |
| 01/18/1996 | WO1996001488A1 Electrically controlled tripping mechanism |
| 01/18/1996 | WO1996001487A1 Detent mechanism |
| 01/18/1996 | WO1996001484A1 Electrically controlled tripping mechanism |
| 12/13/1995 | EP0686309A1 Monolithic prestressed ceramic devices and method for making same |
| 12/06/1995 | EP0685109A1 Micromechanical relay with hybrid actuator. |
| 12/05/1995 | US5471721 Chemically reducing only first surface to produce an internally asymmetrically stress biased element with electrically conductive reduced form and in tension, with second surface in compression |
| 10/19/1995 | DE19503235A1 Fast action switching for short circuit isolation |
| 07/25/1995 | CA1336448C Control system, method of operating an article cleaning apparatus and controlled article cleaning apparatus |
| 02/21/1995 | CA1334538C Control system, method of operating a heating apparatus and controlled heating apparatus |
| 09/01/1994 | WO1994019834A1 Monolithic prestressed ceramic devices and method for making same |
| 09/01/1994 | WO1994019819A1 Micromechanical relay with hybrid actuator |
| 09/01/1994 | CA2156257A1 Micromechanical relay having a hybrid drive |
| 09/01/1994 | CA2155523A1 Monolithic prestressed ceramic devices and method for making same |
| 06/15/1994 | CN2169203Y Electronic flash relay of vehicle |
| 05/24/1994 | US5315204 Piezoelectric snap action switch |
| 02/15/1994 | US5286199 Electromechanical transducer |
| 10/28/1993 | DE4305033A1 Micro-mechanical relay with hybrid drive - has electrostatic drive combined with piezoelectric drive for high force operation and optimum response |
| 08/10/1993 | US5235159 Control system, method of operating a heating apparatus and controlled heating apparatus |
| 08/05/1993 | DE4205340C1 Micro-mechanical electrostatic relay with parallel electrodes - has frame shaped armature substrate with armature contacts above base electrode contacts on base substrate |
| 06/30/1993 | EP0548732A2 Earth leakage circuit breaker |
| 04/07/1993 | EP0535510A1 Electromechanical transducer |
| 12/08/1992 | US5170088 Driving structure for electronic parts in a mechanism |
| 08/18/1992 | US5140493 Control system, method of operating an article cleaning apparatus and controlled article cleaning apparatus |
| 04/28/1992 | CA1299700C Control system, method of operating an atmospheric cooling apparatus and atmospheric cooling apparatus |
| 03/03/1992 | US5093600 Piezo-electric relay |
| 12/31/1991 | CA1293758C Piezoelectric relay |
| 10/17/1991 | CA2038894A1 Piezoelectric snap action switch |
| 09/17/1991 | USRE33691 Piezoelectric ceramic switching devices and systems and method of making the same |
| 06/25/1991 | USRE33618 Method for initially polarizing and centering a piezoelectric ceramic switching device |
| 05/14/1991 | USRE33587 Method for (prepolarizing and centering) operating a piezoceramic power switching device |
| 04/23/1991 | USRE33577 Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture |
| 04/09/1991 | USRE33568 Piezoelectric ceramic switching devices and systems and methods of making the same |
| 02/13/1991 | EP0412401A2 High-speed circuit breaker |
| 02/12/1991 | CA1280140C Low voltage vacuum circuit interrupter |
| 01/31/1991 | DE3923967A1 Braille writing module with piezoceramic-strip pin actuators - utilises horizontal displacement of cupped heads for raising and lowering pins arranged in matrix |
| 01/16/1991 | EP0408306A2 Piezoelectric/electrostrictive actuator having at least one piezoelectric/electrostrictive film |
| 01/16/1991 | EP0408305A2 Piezoelectric/electrostrictive actuator |
| 11/06/1990 | US4967568 Control system, method of operating an atmospheric cooling apparatus and atmospheric cooling apparatus |