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| Number | Title | Issue Date |
| 7608982 | Stacked type piezoelectric element and vibration wave motor Provided is a stacked type piezoelectric element including a surface electrode layer as a first layer and a piezoelectric layer as a second layer. A third layer to an N-th layer thereof are formed by alternately arranging piezoelectric layers and piezoelectric layer... | 10/27/2009 |
| 7514845 | Vibrational actuator and method for driving vibrational actuator A vibrational actuator includes an oscillator that generates vibrational energy; a mover that is rotationally driven around a first axis by the vibrational energy; an output shaft that rotates around a second axis by using a rotational force communicated from the mo... | 04/07/2009 |
| 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 |
| 7285895 | Ultrasonic medical device and method Ultrasonic devices having transducer assembly including a stack of alternating electrodes and piezoelectric elements. A mounting device having a first and second end is adapted to receive ultrasonic vibration from the stack and transmit it from the first to the seco... | 10/23/2007 |
| 7285890 | Magnet retention on rotors Permanent magnets are mounted on a rotor of an electrical motor by an apparatus that keeps an adhesive bonding layer between the magnet and rotor in compression over wide variations in temperature and speed of rotation. The mechanical stresses on the magnets are con... | 10/23/2007 |
| 7262926 | Lens barrel There is described a lens barrel including; a plurality of lens units; an actuator to move at least a lens unit included in the plurality of lens units; and a housing member. The actuator includes: a vibrating device constituted by two vibrating members, each of whi... | 08/28/2007 |
| 7256531 | Driving apparatus A driving apparatus of the invention comprises a fixed member, a piezoelectric element fixed at one end to the fixed member, and a driving friction member fixed to the other end of the piezoelectric element. The driving apparatus of the invention is arranged to move... | 08/14/2007 |
| 7245061 | Micro-beam friction liner and method of transferring energy A micro-beam friction liner adapted to increase performance and efficiency and reduce wear in a piezoelectric motor or actuator or other device using a traveling or standing wave to transfer energy in the form of torque and momentum. The micro-beam friction liner co... | 07/17/2007 |
| 7233096 | Multilayer piezoelectric element and vibration-wave drive device A vibration-wave drive motor incorporating a multilayer piezoelectric element having reduced vibration damping as well as a design lending itself to reduced manufacturing costs and miniaturization. The multilayer piezoelectric element includes a piezoelectric active... | 06/19/2007 |
| 7224103 | Acoustic driver assembly with recessed head mass contact surface An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at le... | 05/29/2007 |
| 7218034 | Acoustic driver assembly with restricted contact area An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one trans... | 05/15/2007 |
| 7215063 | Vibration element and vibration wave driving apparatus A vibration element for a vibration wave driving apparatus includes a first elastic member, a second elastic member, and an electro-mechanical energy conversion element disposed between the first and second elastic members. The electro-mechanical energy conversion e... | 05/08/2007 |
| 7211929 | Multilayer piezoelectric motor A method for accelerating or decelerating a moveable body which body is moved by urging a piezoelectric micromotor to the body in a first direction so that a contact region of the piezoelectric motor is pressed to the body and exciting vibrations in the piezoelectri... | 05/01/2007 |
| 7208861 | Electromechanical drive element In manufacturing electromechanical drive elements, vibration properties are defined in a test environment. These properties are found to give a good operation when being arranged in a motor. Two flexural vibration modes are defined. One is an s-mode connected to an ... | 04/24/2007 |
| 7202905 | Electronic device having a motor providing vibration and camera adjustment functionality An electronic device, such as a radio communication device, includes a motor (102) that can operate in a first mode where it provides a vibration feature and a second mode where it can adjust the focus of a camera assembly (118). When in the second mod... | 04/10/2007 |
| 7183699 | Stacked type electro-mechanical energy conversion element and vibration wave driving apparatus A stacked type electromechanical energy conversion element which is compact in size and capable of providing higher output power and enhanced operating efficiency. A plurality of electrode layers are formed, respectively, on one surfaces of a plurality of piezoelect... | 02/27/2007 |
| 7170214 | Mechanism comprised of ultrasonic lead screw motor An optical assembly that contains an optical device movably attached to a apparatus for driving a threaded shaft assembly. The apparatus contains of a threaded shaft with an axis of rotation and, engaged therewith, a threaded nut. The assembly contains a device for ... | 01/30/2007 |
| 7126256 | Acoustic driver assembly with recessed head mass contact surface An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at le... | 10/24/2006 |
| 7126258 | Acoustic driver assembly with recessed head mass contact surface An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at le... | 10/24/2006 |
| 7122940 | Manipulator A manipulator includes a spherical shell movable member, a manipulating member integrally mounted on the spherical shell movable member, and a vibration member in contact with the spherical shell movable member and vibrating so that the spherical shell movable membe... | 10/17/2006 |
| 7122943 | Acoustic driver assembly with restricted contact area An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one trans... | 10/17/2006 |
| 7122941 | Acoustic driver assembly with recessed head mass contact surface An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at le... | 10/17/2006 |
| 7116033 | Control apparatus and program When starting a vibration-type drive device, the frequency of a drive signal is lowered from a predetermined frequency at a first change rate. When the vibration state of a vibration member reaches a predetermined state, it is determined whether or not a relative mo... | 10/03/2006 |
| 7116037 | Rotary drive device A rotary drive device is configured to be reduced in size while still delivering a prescribed torque. The rotary drive device has a base part with a vibrating body and a rotating body attached to the base part. The vibrating body has at least one piezoelectric eleme... | 10/03/2006 |
| 7109640 | Holographic apparatus and method adopting actuated mirror A holographic apparatus including an actuated mirror includes a fixed body having a first piezo-actuator protrudingly installed thereat; a movable body rectilinearly movable and having a second piezo-actuator protrudingly installed thereat; a rotatable body mounting... | 09/19/2006 |
| 7061159 | Ultrasonic transducer and ultrasonic motor An ultrasonic transducer in which internal electrodes and piezoelectric elements are alternately layered includes outer electrodes, each being connected to the corresponding internal electrodes. The ultrasonic transducer has a first layered part, a second layered pa... | 06/13/2006 |
| 7057328 | Acoustic driver assembly for a spherical cavitation chamber An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). ... | 06/06/2006 |
| 7049730 | Acoustic driver assembly for a spherical cavitation chamber An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). ... | 05/23/2006 |
| 7034438 | Vibration type driving apparatus A vibration type driving apparatus, which is capable of increase of output torque and rotational speed without increasing the size of a vibration body, is described. The apparatus comprises a vibration body which generates vibration by supplying a driving signal to ... | 04/25/2006 |
| 7005776 | Ultrasonic motor and electronic apparatus equipped with ultrasonic motor An ultrasonic motor comprises a piezoelectric vibrating member having a detecting polarized portion for detecting a drive signal having a drive frequency of the detecting polarized portion and a driving polarized portion for receiving the drive signal to oscillate t... | 02/28/2006 |
| 7002283 | Ultrasonic transducer assembly The invention provides an ultrasonic transducer assembly for a bonding apparatus, comprising a bonding tool mounted to an amplifying horn secured between first and second ultrasonic-generating means. A method of forming a transducer for a bonding apparatus is also p... | 02/21/2006 |
| 6995498 | Cruciform ultrasonic transducer An ultrasonic transducer having an ultrasonic conducting element with a plurality of arms extending from a common junction with some of the arms being provided with ultrasonic generators, at least one other arm carrying a bonding tool, especially for bonding a condu... | 02/07/2006 |
| 6989624 | Vibration element and vibration wave driving apparatus The present invention relates to a vibration wave driving apparatus includes a vibration element having an electro-mechanical energy conversion element that is disposed between a first elastic member and a second elastic member, characterized in that the vibration e... | 01/24/2006 |
| 6984920 | Linear piezoelectric ultrasonic motor The present invention relates to a linear motor which draws its operating power from ultrasonic vibration above the frequency of 20 kHz which is generated by piezoelectric ceramic. More particularly, the invention relates to a linear piezoelectric ultrasonic motor w... | 01/10/2006 |
| 6958568 | Acoustic driver assembly for a spherical cavitation chamber An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). ... | 10/25/2005 |
| 6958817 | Method of interferometry with modulated optical path-length difference and interferometer An interferometer has a source for generating a first beam and a second beam of a coherent monochromatic light having a wavelength λ, optical elements for directing the beams through two different optical paths having a path-length difference, a detector for detect... | 10/25/2005 |
| 6956316 | Acoustic driver assembly for a spherical cavitation chamber An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). ... | 10/18/2005 |
| 6952072 | Ultrasonic motor and electronic apparatus utilizing ultrasonic motor An ultrasonic motor has a piezoelectric vibrator driven by a voltage signal to undergo expansion and compression movement. At least two elastic bodies are connected to opposite ends of the piezoelectric vibrator and are vibrationally driven by the expansion and comp... | 10/04/2005 |
| 6951048 | Method for producing a stacked piezoelectric element A method for producing a stacked piezoelectric element by alternately stacking a plurality of layers of an electrode material and piezoelectric layers having an electro-mechanical energy converting function and provided with penetrating electrodes, which are obtaine... | 10/04/2005 |
| 6944308 | Capacitive transducer A capacitive transducer, in particular a condenser microphone, with a ring-shaped member and a diaphragm secured to the ring-shaped member. A disc-shaped member is secured in the opening of the ring-shaped member and in parallel relationship to the diaphragm. The di... | 09/13/2005 |
