Patents
Patents for H02N 2 - Electric machines in general using piezo-electric effect, electrostriction or magnetostriction (14,251)
09/1986
09/02/1986CA1210800A1 Piezoelectrical control element
08/1986
08/13/1986EP0191011A1 Electropneumatic signal converter
08/12/1986US4605876 Piezoelectric ceramic energy trapping electronic device
07/1986
07/23/1986EP0188045A1 Deformable chuck
07/22/1986US4601539 Lens moving device using piezoelectric material
07/22/1986CA1208269A1 Motor device utilizing ultrasonic oscillation
07/15/1986US4600854 For attaining discrete radial displacements with respect to a frame
06/1986
06/17/1986US4595854 Drive circuit for piezoelectric stack
06/10/1986US4594526 Bimorph electromechanical transducer and control circuit device therefor
05/1986
05/28/1986EP0182764A2 Electromechanical film and procedure for manufacturing same
05/07/1986EP0179978A2 Stacked type piezo-electric device and method of its use
05/06/1986US4587452 Vibration wave motor having a vibrator of non-uniform elastic modulus
04/1986
04/29/1986US4585969 Precision rotary moving mechanism using piezoelectric drive elements
04/01/1986US4580292 Communications exchange
04/01/1986US4580073 Vibration wave motor with plural projection vibrator
03/1986
03/25/1986US4578607 Piezoelectric precise rotation mechanism for slightly rotating an object
03/25/1986CA1202352A1 Piezoelectric displacing device
03/18/1986US4577131 Piezoelectric micromotion actuator
02/1986
02/11/1986US4570096 Electromechanical translation device comprising an electrostrictive driver of a stacked ceramic capacitor type
01/1986
01/29/1986EP0169297A2 Piezoelectric motor
01/28/1986US4567394 Electro-pneumatic signal converter
01/21/1986US4565940 Method and apparatus using a piezoelectric film for active control of vibrations
01/02/1986EP0166499A2 Precision moving mechanism
12/1985
12/31/1985US4562374 Motor device utilizing ultrasonic oscillation
12/31/1985US4562373 Piezoelectric motor
12/24/1985US4560263 Drive system for a vibration wave motor for lens control
12/19/1985EP0157764A4 Power generation from waves on the surface of bodies of water.
12/04/1985EP0163501A2 Comb-shaped piezoelectric drive unit
11/1985
11/13/1985EP0160707A1 Piezoelectric stepping rotator
10/1985
10/23/1985EP0158903A2 Capacitive load driving device
10/22/1985US4548090 Supersonic vibration driven motor device
10/16/1985EP0157764A1 Power generation from waves on the surface of bodies of water.
09/1985
09/24/1985US4543663 Communications exchange
09/10/1985CA1193361A1 Integrated magnetostrictive-piezoelectric-metal oxide semiconductor magnetic playback head
08/1985
08/27/1985CA1192646A1 Piezoelectric apparatus for positioning optical fibers
07/1985
07/23/1985CA1190953A1 Piezoelectric motor
07/10/1985EP0147534A1 Micromotion actuator
07/10/1985EP0147391A1 Piezoelectric fluid-electric generator
06/1985
06/25/1985US4525790 Method for oscillating ultrasonic waves and a microcomputer's built-in ultrasonic wave oscillator circuitry
06/05/1985EP0143549A1 Precise rotation mechanism for slightly rotating an object
05/1985
05/28/1985US4520413 Integrated magnetostrictive-piezoelectric-metal oxide semiconductor magnetic playback head
04/1985
04/30/1985US4514773 Circuit arrangement for generating an actuating signal for a piezo-electric element of a positioning device
04/23/1985US4513219 Vibration wave motor
04/16/1985US4512036 Communications exchange
04/16/1985US4510935 Electrical energy source
04/16/1985CA1185656A1 Piezoelectric device for generating and storing electrical energy
04/09/1985US4510484 Piezoelectric reed power supply for use in abnormal tire condition warning systems
04/09/1985US4510412 Piezoelectric displacing device
04/09/1985US4510411 Drive circuit for surface-wave driven motor utilizing ultrasonic vibration
03/1985
03/28/1985WO1985001324A1 Power generation from waves on the surface of bodies of water
03/19/1985US4506184 Deformable chuck driven by piezoelectric means
03/12/1985US4504760 Piezoelectrically driven vibration wave motor
02/1985
02/05/1985CA1182159A1 Piezoelectric motor with two-part oscillating rotor
01/1985
01/22/1985US4495432 Piezoelectric vibration wave motor with sloped drive surface
01/01/1985US4491401 Diaphragm device
12/1984
12/20/1984WO1984005010A1 Piezoelectric fluid-electric generator
12/11/1984US4488080 Piezoelectrical control element
11/1984
11/28/1984EP0126325A2 Drive circuit for piezoelectric stack
11/20/1984US4484099 Piezoelectric vibration wave motor with multiple traveling wave generating members
09/1984
09/11/1984US4471257 Monitoring system for electrically actuated control element
08/1984
08/28/1984US4468583 Piezoelectric rotary actuator
07/1984
07/24/1984CA1171496A1 Vibrating transducer power supply for use in abnormal tire condition warning systems
07/17/1984US4460842 Piezoelectric device with high, constant preload force
07/04/1984EP0112454A2 Rotary actuator
06/1984
06/12/1984US4454441 Piezoelectric driving apparatus
06/05/1984US4453103 Piezoelectric motor
04/1984
04/25/1984EP0106483A2 Piezoelectric displacing device
03/1984
03/20/1984US4438363 Electrically controlled mechanical positioning device
03/06/1984US4435667 Spiral piezoelectric rotary actuator
02/1984
02/14/1984US4431934 Electrically actuated piezoelectric control element
01/1984
01/03/1984US4423941 Device for shifting lens group
12/1983
12/27/1983US4423347 Positioning element with a piezo-ceramic body
12/20/1983US4422002 Piezo-electric travelling support
11/1983
11/23/1983EP0094712A1 Control voltage generating circuit for a piezoelectric element of a positioning device
11/23/1983EP0094635A1 Piezoelectric regulating unit
10/1983
10/19/1983EP0091739A1 Integrated magnetostrictive-piezoelectric metal oxide semiconductor magnetic playback head
10/04/1983CA1154862A1 Fiber reinforced piezoelectric bender transducer
10/04/1983CA1154814A1 Piezoelectric motor for dithering ring laser gyroscopes
09/1983
09/13/1983US4404502 Energy saving circuit arrangement for a piezoelectric positioning element
09/13/1983US4404490 Power generation from waves near the surface of bodies of water
08/1983
08/23/1983US4400641 Piezoelectric motor with two part rotor
08/09/1983CA1151764A1 Magnetic transducer supporting apparatus
07/1983
07/13/1983EP0083528A1 Piezoelectric generators of electric pulses
06/1983
06/07/1983US4387318 Piezoelectric fluid-electric generator
05/1983
05/03/1983US4382202 Piezoelectric loading device
04/1983
04/26/1983US4381146 Piezoelectric aperture size control device
02/1983
02/16/1983EP0071666A1 Electric travelling support
01/1983
01/25/1983US4370583 Piezoelectric motor for dithering ring laser gyroscopes
10/1982
10/26/1982CA1134482A1 Pathlength controller for a ring laser gyroscope
09/1982
09/28/1982CA1132707A1 Driving circuit for piezo-electric transducer
09/14/1982US4349762 Fiber reinforced piezoelectric bender transducer
07/1982
07/13/1982US4339682 Rotative motor using a piezoelectric element
06/1982
06/30/1982EP0054704A2 Regulating unit with a piezoceramic body
06/30/1982EP0054703A1 Circuit for a piezoelectric positioning element and the like
06/15/1982CA1125910A1 Drive circuitry for controlling moveable video head
06/15/1982CA1125909A1 Transducer assembly vibration sensor
05/1982
05/11/1982CA1123512A1 System for damping vibrations in a deflectable transducer
05/05/1982EP0050791A2 Electrically operated regulating unit
05/05/1982EP0050712A1 Mechanical regulating unit
04/1982
04/20/1982US4326228 Magnetic transducer supporting apparatus