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| Number | Title | Issue Date |
| 8179019 | Positioning apparatus and method Positioning apparatus comprises: a first surface; a tubular body and a first end surface at a first end of the tubular body and arranged in contact with the first surface; and surface wave generation means arranged to generate a first travelling surface wave on the ... | 05/15/2012 |
| 8164233 | Drive apparatus A drive apparatus includes a first, a second, and a third frame, and a first and a second drive mechanism. The second frame is supported movably in a first direction with respect to the first frame. The third frame is supported movably in a second direction that int... | 04/24/2012 |
| 8049396 | Piezoelectric ultrasonic motor and method of manufacturing the same A piezoelectric ultrasonic motor and a method of manufacturing the piezoelectric ultrasonic motor. The piezoelectric ultrasonic motor includes: a piezoelectric body that generates a traveling wave according to an applied voltage signal; a vibrator that is attached t... | 11/01/2011 |
| 8035275 | Vibration actuator, lens barrel, camera system and vibrating element A vibration actuator by which stable drive can be obtained, a lens barrel, a camera system and a vibrating element are provided. In first vibration mode and second vibration mode, vibrating elements of the vibration actuator can vibrate. Resonance frequency of the s... | 10/11/2011 |
| 8013495 | Stator and piezo ultrasonic motor including the same A stator and a piezo ultrasonic motor including the same. The piezo ultrasonic motor includes a stator including an elastic body having a flat portion at its outer surface and a central hole penetrating the center of the stator with a predetermined size, and a piezo... | 09/06/2011 |
| 8008841 | Stator and piezo ultrasonic motor including the same A stator and a piezo ultrasonic motor including the same. The piezo ultrasonic motor includes a stator including an elastic body having a flat portion at its outer surface and a central hole penetrating the center of the stator with a predetermined size, and a piezo... | 08/30/2011 |
| 8008840 | Drive unit A drive unit which generates less heat may be provided. The drive unit includes a piezoelectric element (P1) having a piezoelectric layer (1), a drive power supply (14) configured to apply a driving voltage at a predetermined frequency to the pi... | 08/30/2011 |
| 7973450 | Multi-degree-of micro-actuator The present invention provides a multi-dimensional micro-actuator comprising a stator having a plurality of symmetrically arranged electrode piezoelectric plates, a rotator disposed near the stator, and a plurality of contacting elements. Each of the symmetrically a... | 07/05/2011 |
| 7960896 | Piezoelectric motor and camera device A piezoelectric motor includes: a base; first and second piezoelectric elements that are provided symmetrically on the base to face with each other, the first and second piezoelectric elements actuating in opposite directions; first and second displacement enlarging... | 06/14/2011 |
| 7952258 | Vibration-type actuator A vibration-type actuator having a vibrating body adapted to be deformed for driving and mounted with a contact member having a spring function. The contact member is comprised of a protruding portion adapted to be in contact with a driven body and fixing portions f... | 05/31/2011 |
| 7948149 | Stator and piezo ultrasonic motor including the same A stator and a piezo ultrasonic motor including the same are provided. The piezo ultrasonic motor includes a stator including an elastic body having a flat portion at its outer surface and a central hole penetrating the center of the stator with a predetermined size... | 05/24/2011 |
| 7911112 | Ultrasonic actuator An ultrasonic actuator includes: a piezoelectric element 1 for generating a bending vibration and a stretching vibration; and a driver element 2 attached to a surface of the piezoelectric element 1 facing the direction of the bending vibration i... | 03/22/2011 |
| 7839053 | One-way rotational transfer mechanism, and ultrasonic rotary drive device incorporating one-way rotational transfer mechanism A one-way rotational transfer mechanism includes a rotary input member; a holding member including an axially orthogonal surface to the axis; a hollow-cylindrical rotary output shaft positioned coaxially around the rotary input member to be rotatable relative to the... | 11/23/2010 |
| 7834516 | Piezoelectric ultrasonic motor A piezoelectric ultrasonic motor includes a piezoelectric stator including a hollow metal tube having a quadrangular cross section and four piezoelectric elements each installed in each outer face of the metal tube; a rotary shaft including a rotation bar inserted i... | 11/16/2010 |
| 7825566 | Ultrasonic actuator and method for manufacturing piezoelectric deformation portion used in the same Provided are an ultrasonic actuator and a method for manufacturing an piezoelectric deformation portion in which wiring a drive circuit can be easily processed, and in which productivity can be increased. The ultrasonic actuator comprises: a triangular vibrating mem... | 11/02/2010 |
| 7786650 | Ultrasonic motor Provided is an ultrasonic motor capable of realizing high torque. When two terminals are selected from a first terminal (31t), a second terminal (32t), and a third terminal (33t) of a vibrator (3), and AC voltages who... | 08/31/2010 |
| 7759840 | Ultrasonic motor and vibration detection method for ultrasonic motor When a piezoelectric ceramic sheet is divided into two equal parts in a longitudinal direction and two equal parts in a width direction to form four regions, internal electrodes are disposed over each region and are disposed so that surface areas occupied in each re... | 07/20/2010 |
| 7642696 | Vibration actuator and drive unit including the same An ultrasonic actuator includes an actuator body, a case and a support rubber. The support rubber is made of conductive rubber having alternately stacked insulating layers and conductive layers and arranged between the case and the actuator body such that an externa... | 01/05/2010 |
| 7638926 | Piezoelectric ultrasonic motor A piezoelectric ultrasonic motor includes a piezoelectric stator including a metal tube with an inner space and piezoelectric elements mounted on the outer circumference of the metal tube, a rotary shaft including a rotation bar inserted into the inner space of the ... | 12/29/2009 |
| 7598656 | Piezoelectric ultrasound motor The invention relates to a piezoelectric ultrasound motor with an oscillator in the form of a piezoelectric plate of the length L and the height H as well as with one or two friction elements which are arranged at the oscillator and elastically pressed against the f... | 10/06/2009 |
| 7595579 | Piezoelectric actuator module with a sheathed piezoelectric actuator A piezoelectric actuator module having a piezoelectric actuator, fastened between an actuator head and an actuator foot, and having a sheath, surrounding the piezoelectric actuator, for electrical passivation, is proposed in which the sheath is an insulation guard l... | 09/29/2009 |
| 7583008 | Vibration wave driven apparatus and vibrator A vibration wave driven apparatus which makes it possible to secure a required component accuracy obtained by machining and can increase a power ratio to the size of the apparatus. A plurality of contact parts are formed on one surface of an elastic vibration plate ... | 09/01/2009 |
| 7528526 | Piezoelectric drive unit and method for generating a preferably rotating drive movement for such a drive unit The invention relates to a piezoelectric drive unit and a method for generating a preferably rotating drive movement for such a drive unit. The drive unit comprises a stator (1), a rotor, embodied to rotate about a rotational axis (2), with relation to... | 05/05/2009 |
| 7518286 | Vibration wave driven apparatus and vibrator A vibration wave driven apparatus which makes it possible to secure a required component accuracy obtained by machining and can increase a power ratio to the size of the apparatus. A plurality of contact parts are formed on one surface of an elastic vibration plate ... | 04/14/2009 |
| 7429812 | Drive unit A drive unit for the movement of an active element with respect to a passive element, wherein the active element includes a resonator and at least one excitation device for exciting oscillations of the resonator. The resonator includes contact regions for exerting f... | 09/30/2008 |
| 7423364 | Sealed mover assembly A mover assembly (16) that moves or positions an object (12) includes a mover output (222), an actuator (344), and a mover housing assembly (220). The mover output (222) is connected to the object (12), and the actuat... | 09/09/2008 |
| 7414250 | Cryogenic variable temperature vacuum scanning tunneling microscope A cryogenic variable temperature scanning tunneling microscope of novel design and component configuration, for use in conjunction with a variety of low temperature methodologies. ... | 08/19/2008 |
| 7408289 | Piezoelectric actuator, and apparatus and method for actuating the same A linear actuator using a metal beam-type piezoelectric material, and an apparatus and a method for actuating the same. The piezoelectric actuator includes: a moving member having a predetermined length and moving in a forward or a backward direction; and a piezoele... | 08/05/2008 |
| 7408288 | Driving apparatus A determination is made whether a moving speed of a slider section with respect to a rod section in a piezoelectric actuator is lower than a predetermined speed. When the moving speed is lower than the predetermined speed, it is considered that a friction-bonded por... | 08/05/2008 |
| 7368854 | Actuator An actuator comprises: an electro-mechanical conversion element; a driving frictional member mounted onto one side in an extension/contraction direction of the electro-mechanical conversion element, the driving frictional member being frictionally engaged with a dri... | 05/06/2008 |
| 7368853 | Piezoelectric motors and methods for the production and operation thereof The invention relates to a piezoelectric motor comprising a piezoelectric component that is connected to a resonator and a two-dimensional resonator that interacts with a movable. element, the resonator having principal surfaces that are parallel to each other and t... | 05/06/2008 |
| 7362522 | Lens barrel A lens barrel, including plural lens units for zooming and focusing a subject, an actuating section for moving at least one of the plural lens units, and a housing section for house the plural lens units and the actuating section, wherein the actuating section inclu... | 04/22/2008 |
| 7362000 | Fluid pulsating generator A fluid pulsating generator utilizes a repeating pulsating component in conjunction with one or more piezoelectric members to generate a piezoelectric affect which creates an electrical voltage. The fluid pulsating generator can be incorporated into a pulsating spri... | 04/22/2008 |
| 7355325 | Wide frequency range electromechanical actuator An electromechanical motor (1), using at least two bimorph, monomorph or multimorph electromechanical actuating elements (6) interconnected by a common actuator backbone (5) is disclosed. The actuating elements (6) are controllable in bot... | 04/08/2008 |
| 7355802 | Driving device, lens barrel and imaging apparatus A driving device including: a vibrating body composed of a plurality of electric elements which are arranged to intersect in a predetermined angle, to vibrate based on a high frequency signal; a driven member having disk shape to be rotated by vibration of the vibra... | 04/08/2008 |
| 7352109 | Flat type piezoelectric ultrasonic motor There is provided a flat type piezoelectric ultrasonic motor for generating a rotation force to a rotor by ultrasonic vibrations. In the piezoelectric ultrasonic motor, a vibrator is formed of elastic material at a given size, a plurality of piezoelectric plates are... | 04/01/2008 |
| 7348710 | Robust electromechanical motor An electromechanical motor includes a rail to be moved, a dry, non-lubricated, sliding bearing for the rail, and driving members imposing a mechanical driving force on the rail. The bearing has two rail contacting portions. A first portion contacts the rail for obst... | 03/25/2008 |
| 7342347 | Piezomotor with a guide The present invention relates to a drive system comprising at least one motor with at least one vibration generator each as well as at least one resonator each and a device driven by said motor, wherein the resonator comprises a contact area that cooperates with the... | 03/11/2008 |
| 7317275 | Harmonic propulsion and harmonic controller A device and method for propelling objects using periodic or harmonic vibrations is described. The device comprises a flexible substrate or surface and a source of vibrational energy that is applied to the substrate or surface. Specific embodiments include a device ... | 01/08/2008 |
| 7312559 | Stator and ceramic tube type ultrasonic motor using the same The present invention relates to a ceramic tube type ultrasonic motor having a stator including a tube-type elastic body that is formed of a ceramic material; and a plurality of piezoelectric diaphragms that are attached on the outer peripheral surface of the elasti... | 12/25/2007 |
