| Patents for H02N 2 - Electric machines in general using piezo-electric effect, electrostriction or magnetostriction (14,251) |
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| 08/31/1993 | US5241233 Electric drive for a rectifying segmented transducer |
| 08/29/1993 | CA2090559A1 Friction material composition and process for production thereof |
| 08/25/1993 | EP0557106A1 Ultrasonic driving motors |
| 08/25/1993 | EP0556821A1 Walking toothed actuator |
| 08/24/1993 | US5239415 Lens barrel using a surface wave motor |
| 08/19/1993 | CA2081094A1 Walking toothed actuator |
| 08/18/1993 | EP0555828A1 Electrotiltable material (tilter) |
| 08/17/1993 | US5237238 Adjusting device for microscopic movements |
| 08/17/1993 | US5237236 Walking toothed actuator |
| 08/17/1993 | US5237166 Optical atmospheric link apparatus with light path correction |
| 08/12/1993 | DE4303424A1 Piezoelectric bimorph actuator e.g. for camera shutter - has piezoceramic plates secured to both sides of alloy electrode plate with thicknesses chosen in relation to elastic moduli |
| 08/11/1993 | EP0554848A1 Device comprising a piezoelectric transducer |
| 08/11/1993 | CA2082081A1 Electrotiltable material (tilter) |
| 08/04/1993 | EP0553829A1 A vibration driven actuator |
| 08/04/1993 | EP0553828A1 A vibration driven motor or actuator |
| 08/04/1993 | EP0553827A1 A vibration driven actuator |
| 08/03/1993 | US5233274 Drive circuit for langevin type ultrasonic bolt-tightening motor |
| 08/03/1993 | US5233258 Ultrasonic sheet feeder, low-profile ultrasonic motor, and method of driving the same |
| 08/03/1993 | US5233257 Piezo-electric motor |
| 07/28/1993 | EP0552754A1 A vibration driven motor |
| 07/28/1993 | EP0552346A1 Electroactoric motor. |
| 07/27/1993 | US5231325 Vibration device for a vibration driven motor |
| 07/20/1993 | US5229679 Microdrive apparatus |
| 07/14/1993 | EP0551096A1 Control device for a vibration driven motor |
| 07/14/1993 | EP0550435A1 Piezoelectric solid state motor stack. |
| 07/06/1993 | US5225734 Vibration wave driven motor |
| 06/23/1993 | EP0547083A1 Generator. |
| 06/22/1993 | CA1319330C Brake device |
| 06/17/1993 | DE4140676A1 Piezo-actuator stack control method - is formed on N single piezo discs, only one of which is charged with electrical energy at one time |
| 06/09/1993 | EP0545391A1 Actuator composed of ferroelectric ceramic discs |
| 06/08/1993 | US5218259 Coating surrounding a piezoelectric solid state motor stack |
| 06/08/1993 | US5218258 Ultrasonic motor and laser beam welding apparatus using the same |
| 06/01/1993 | US5216314 Pressure force adjusting mechanism for a vibration wave driven motor |
| 06/01/1993 | US5216313 Ultrasonic wave linear motor |
| 05/26/1993 | EP0543360A1 Vibration driven motor |
| 05/26/1993 | EP0543114A1 Multiresonant actuator |
| 05/25/1993 | US5214339 Circuit and method of driving an ultrasonic motor to method for driving an ultrasonic motor |
| 05/19/1993 | CN1072288A Piezoelectric actuator |
| 05/11/1993 | US5210454 Driving circuit for an ultrasonic motor |
| 05/05/1993 | EP0539969A1 Ultrasonic motor |
| 05/05/1993 | EP0539950A1 Sheet feeding apparatus |
| 05/04/1993 | US5208505 Device for driving a piezoelectric element |
| 04/29/1993 | WO1993008607A1 Process and device for regulating the frequency of a travelling wave motor |
| 04/29/1993 | DE4233933A1 Ultrasonic motor of travelling wave type - has piezoelectric transducer of cylindrical platelets, adhered to stator surface |
| 04/29/1993 | DE4134781A1 Verfahren zur regelung der frequenz eines wanderwellenmotors und regeleinrichtung hierzu Method for control of the frequency of a traveling wave motors and control device for this purpose |
| 04/28/1993 | EP0538791A1 Vibration driven motor |
| 04/21/1993 | EP0537446A2 Piezoelectric motor |
| 04/21/1993 | EP0537384A1 Rotation control system for ultrasonic motor |
| 04/20/1993 | US5204577 Ultrasonic motor improved in driving efficiency |
| 04/19/1993 | WO1993008609A1 Piezoelectric and electrostrictive actuators |
| 04/14/1993 | EP0536832A1 Rotary or linear electric motor in which the actuator is driven by ultrasonic vibrations |
| 04/14/1993 | EP0536409A1 Ultrasonic motor |
| 04/06/1993 | US5200665 Ultrasonic actuator |
| 03/30/1993 | US5198935 Lens barrel with ultrasonic wave motor |
| 03/30/1993 | US5198732 Rotation control system for ultrasonic motor |
| 03/30/1993 | US5198714 Multiple-surface sensor control for a traveling wave motor |
| 03/24/1993 | EP0533328A1 Ultrasonic motor driven apparatus |
| 03/24/1993 | EP0532971A1 A progressive electrode for solid state motors |
| 03/17/1993 | EP0531793A1 Electric windscreen wiper drive |
| 03/17/1993 | CN1070068A Walker self generating power sowrce |
| 03/10/1993 | EP0530822A2 Guide device for vibration driven motor |
| 03/09/1993 | US5192890 Vibration driven actuator |
| 03/09/1993 | US5192889 Ultrasonic motor driver |
| 03/04/1993 | WO1993004505A1 Electroactoric motor |
| 03/03/1993 | EP0529582A1 Wave driven motor |
| 02/24/1993 | EP0528484A1 Method of providing a paste for a ceramic multilayer actuator |
| 02/23/1993 | US5189331 Vibration wave driven motor |
| 02/18/1993 | DE4127163A1 Piezo-motor for machine or equipment - has piezo-yoke elements within drum together with other piezo-pivot elements that produce incremental motion of drum |
| 02/16/1993 | US5187406 Vibration driven motor |
| 02/11/1993 | DE4126456A1 High energy capacitor e.g. for linear accelerator - uses electro-restrictive or piezoelectric material as dielectric with temperature held to value around Curie temp. point |
| 01/28/1993 | DE4224284A1 Laminatfoermiges verschiebungstransducerelement und verfahren zu seiner herstellung Laminatfoermiges verschiebungstransducerelement and process for its preparation |
| 01/26/1993 | US5182484 Releasing linear actuator |
| 01/20/1993 | EP0523237A1 Indicator |
| 01/19/1993 | US5180941 Vibration driven motor apparatus |
| 01/19/1993 | CA1312899C Piezoelectric actuator |
| 01/13/1993 | EP0407460A4 An integrated mass storage device |
| 01/12/1993 | US5179311 Drive circuit for ultrasonic motors |
| 01/05/1993 | US5176376 Vibration sheet feeder |
| 12/29/1992 | US5175465 For tilting the plane of an object |
| 12/23/1992 | CN1019623B Piezoelectric actuator |
| 12/22/1992 | US5173631 Driving device for ultrasonic motor |
| 12/22/1992 | US5173630 Control device for ultrasonic motor |
| 12/16/1992 | EP0518262A2 Linear actuator |
| 12/15/1992 | US5172023 Ultrasonic motor |
| 12/11/1992 | CA2070544A1 Releasing linear actuator |
| 12/09/1992 | CN1066941A Piezoelectric-current changing linear step motor |
| 12/09/1992 | CN1066940A Piezoelectric-current changing rotary step motor |
| 12/08/1992 | US5170088 Driving structure for electronic parts in a mechanism |
| 12/02/1992 | EP0516380A2 Micro-displacement element for a scanning tunneling microscope |
| 12/02/1992 | EP0516175A2 Twisting actuators |
| 12/01/1992 | US5168189 Solderless connector for a solid state motor stack |
| 12/01/1992 | CA2066084A1 Twisting actuators |
| 11/24/1992 | US5166572 Ultrasonic motor |
| 11/19/1992 | EP0513288A1 Piezoelectric motor |
| 11/18/1992 | CN1066348A Linear driver |
| 11/17/1992 | US5165047 Driving circuit for vibration wave driven motor |
| 11/17/1992 | US5164629 Vibration wave driven motor |
| 11/12/1992 | WO1992020141A1 Ultrasonic motor |
| 11/10/1992 | US5162708 Method and device for driving a supersonic motor |
| 11/10/1992 | US5162692 Ultrasonic oscillator and ultrasonic motor using the same |