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| Number | Title | Issue Date |
| 7999439 | Linear drive ultrasonic motor There is provided a linear drive ultrasonic motor which is capable of achieving a stable thrust, and which has fewer restrictions regarding a relationship with an external apparatus. The linear drive ultrasonic motor includes at least an ultrasonic vibrator h... | 08/16/2011 |
| 7932660 | Ultrasonic motor An ultrasonic motor has a cylindrical rotor for performing a mechanical output, a plurality of ultrasonic vibrators each having two points in internal contact with the rotor, and a preload mechanism for pressing the ultrasonic vibrators from an inside toward an outs... | 04/26/2011 |
| 7923898 | Piezo drive system A piezo drive system includes an elastic fixing frame, a drive element, a rod, and a rotor. A vamplate portion is formed on the outer surface of the rod. One end of the rod is secured to around the center of a face of the drive element. The rotor consists of a cylin... | 04/12/2011 |
| 7816839 | Ultrasonic linear motor An ultrasonic linear motor includes a substrate; a vibrator disposed on the substrate having an oblique or curved face at two sides thereof forming concave receiving portions with the surfaces of the substrate; and a slider having clamping portions at two sides ther... | 10/19/2010 |
| 7786651 | Micromotion mechanism having ultrasonic motor and oscillation element holding mechanism A micromotion mechanism having an ultrasonic motor includes: a fixing base; a moving element supported to be movable in the moving axis direction with respect to the fixing base; an oscillation element having a rectangular geometry including a first plane parallel t... | 08/31/2010 |
| 7772744 | Ultrasonic actuator which acts on a rotor to rotate the rotor It is an object to provide a small ultrasonic actuator whose voltage control is easy. The ultrasonic actuator acts on a rotatable rotor to rotate the rotor, the ultrasonic actuator includes: a plate vibrator having one end which contacts the rotor, a corner portion ... | 08/10/2010 |
| 7737605 | Linear ultrasound motor The invention relates to an ultrasound linear piezoelectric motor comprising an ultrasound oscillator (1) embodied in the form of a piezoelectric plate (4) or a cylinder shell part (3), acoustic oscillation generators (5) and a friction e... | 06/15/2010 |
| 7737606 | Inertial drive actuator To provide an inertial drive actuator that is easy to assemble and achieves high accuracy in position detection, the actuator has a fixed member, a vibration substrate, a piezoelectric element (movement unit), first and second moving bodies that moves relative to th... | 06/15/2010 |
| 7696670 | Ultrasonic motor An ultrasonic motor is provided with an ultrasonic transducer having a piezoelectric element, a holding member fixed to the ultrasonic transducer and holding the ultrasonic transducer, a pressing member pressing the holding member, and a member to be driven which is... | 04/13/2010 |
| 7638927 | Vibration actuator Provided is a vibration actuator in which a plurality of rotors can be driven by a single vibration unit. Two rotors (A) and (B) are attracted toward corresponding stators to be contacted with and pressurized against the corresponding stators (3) and (... | 12/29/2009 |
| 7633207 | Ultrasonic motor An ultrasonic motor comprises an ultrasonic vibrator having a piezoelectric stack, a press member which is securely connected in the vicinity of a node of a standing wave in the ultrasonic vibrator and which presses the ultrasonic vibrator, a driven member which is ... | 12/15/2009 |
| 7602104 | Ultrasonic motor and pressing mechanism of ultrasonic vibrator Contact pressures between a driven member and an ultrasonic vibrator are balanced, making the driving characteristics in the forward and reverse directions uniform, and the driven member is driven with high driving efficiency. The invention provides a pressing mecha... | 10/13/2009 |
| 7564168 | Driving device A driving device includes an electromechanical transducer that is extended and contracted by application of voltage, and a support member that slidably supports a movable body and that is displaced together with the electromechanical transducer to which the support ... | 07/21/2009 |
| 7541718 | Ultrasonic motor An ultrasonic motor includes a stator that includes a comb body with a plurality of circumferentially-arranged comb-like projections and a piezoelectric body integrally mounted on the comb body, a rotor rotatable with respect to the stator, the rotor establishing pr... | 06/02/2009 |
| 7449815 | 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; a driven member frictionally engaged with the driving frictional me... | 11/11/2008 |
| 7439653 | Vibration wave driving apparatus This invention provides a vibration wave driving apparatus which makes it possible to reduce the localized abrasion of a contact member, and reduce the deterioration of performance due to long-term driving. This vibration wave driving apparatus has a contact member ... | 10/21/2008 |
| 7439650 | Piezoactuator drive detection device and electronic device To provide a drive detection means for a piezoelectric actuator that can detect an amount driven without requiring adding an encoder or other component while also preventing increasing the load. A rotor is disposed eccentrically to the axis of rotation to change the... | 10/21/2008 |
| 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 |
| 7365475 | Ultrasonic motor An ultrasonic motor includes a circular stator having a piezoelectric element and a comb-tooth body having a plurality of comb teeth which are circumferentially arranged thereon, and a circular rotor having a rotation shaft, the circular rotor being in press-contact... | 04/29/2008 |
| 7268464 | Ultrasonic motor An ultrasonic motor includes an annular stator, a rotor, a rectangular parallelepiped multilayer piezoelectric transducer, a support shaft, three transducers with drivers, a holder for holding the transducers with an elastic plate therebetween, and a leaf spring for... | 09/11/2007 |
| 7265480 | Vibration wave linear motor and a driving method thereof A vibration wave linear motor is a vibration wave linear motor that can drive a plurality of driving targets with a simple and small configuration. In the linear motor, two guide members sandwich two vibrators, which are individually and electrically connected to a ... | 09/04/2007 |
| 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 |
| 7245058 | Vibration wave driving apparatus, and method of setting shape of support member supporting elastic member forming vibration member of vibration wave driving apparatus A vibration wave driving apparatus includes a vibration member in which an electro-mechanical energy conversion element is fixed to an elastic member, and a contact member pressed against a sliding part provided in the vibration member, so as to be kept in contact t... | 07/17/2007 |
| 7230366 | Vibration wave linear motor In a vibration wave linear motor, a vibrator stably operates with a simple and small configuration. Both ends of a movable guide member are held by shaft bearing long holes to freely oscillate, and an angle of an inclination φ occurs according to the move of the vi... | 06/12/2007 |
| 7221076 | Multiple movements harmonic frequency actuator system A system having a harmonic frequency actuator system is provided including providing an actuator body, the actuator body having more than one set of fingers for generating a motion for a semi-rigid element, and attaching a high frequency actuator to the actuator bod... | 05/22/2007 |
| 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 |
| 7196454 | Positioning device for microscopic motion An apparatus including a base configured to slidably engage a driven element, a piezoelectric element interposing the base and the driven element and attached to the base proximate a first piezoelectric element end, and a friction element attached proximate a second... | 03/27/2007 |
| 7187103 | Piezoelectric drive A piezoelectric drive that is used to create a relative movement between a first and a second body on a plane of movement. The drive includes a flat metal sheet (1) that forms, or is secured to, the first body and that is arranged parallel to the plane of mov... | 03/06/2007 |
| 7129621 | Vibration wave linear motor and lens implement using vibration wave linear motor The vibration wave linear motor of the present invention is structured comprising a driven component, a first vibrator having two or more driving contacting parts for driving the driven component in a certain predetermined direction, a second vibrator having one or ... | 10/31/2006 |
| 7129620 | Vibration wave linear motor and lens implement using vibration wave linear motor The present invention comprises a first vibrator comprising a piezoelectric unit and at least one driving contacting part which vibrates by applying a predetermined voltage thereto, a second vibrator which comprises a piezoelectric unit and a plurality of driving co... | 10/31/2006 |
| 7129618 | Control apparatus capable of low-speed driving of vibration type driving apparatus, actuating apparatus using the control apparatus, control method capable of low-speed driving of vibration type driving apparatus, and storage medium storing program including program codes capable of realizing the control method A control apparatus and a control method for a vibration type driving apparatus are disclosed which can maintain output performance even when low-speed driving is continued for a long time. The vibration type driving apparatus comprises a vibrating body and an elect... | 10/31/2006 |
| 7119477 | Replaceable friction coupling for piezoelectric motors A piezoelectric motor comprising: a piezoelectric vibrator (50) having a surface comprising a localized non-planar shaped first surface region thereon which first surface region has a shape different from the shape of the surface on which it is located; and a... | 10/10/2006 |
| 6979935 | Piezoelectric motor and electronic equipment with piezoelectric motor A piezoelectric motor has a vibrating body for undergoing vibrational movement in accordance with a vibration wave, a contact member disposed in contact with and driven by the vibrating body during vibration thereof, and a support member for supporting the vibrating... | 12/27/2005 |
| 6953122 | Smart screening machine A screening machine that includes a screen having a periphery and a central porous region is provided. A motion amplifier is substantially rigidly attached in direct contact with the periphery of the screen and not in direct contact with the central porous region. A... | 10/11/2005 |
| 6909222 | Piezoelectric actuator, and timepiece and portable equipment having the same A diaphragm 10 is fixed to a base plate 102 by a screw 13. A lever 20 has a spring member 23, a rotor-fixing member 25, and an insertion hole 22 formed therein. By passing a shaft 21 through the insertion hole ... | 06/21/2005 |
| 6831393 | Linear actuator A linear actuator is an actuator for directly driving (moving) a slider. The linear actuator has an actuator unit constituted by the slider and an actuator body on which the slider is movably provided for linear movement. The actuator body has a base, a vibrating el... | 12/14/2004 |
| 6744176 | Piezoelectric motor The present invention concerns a piezoelectric motor of the type including: a stator (2); a rotor (20) capable of moving in rotation in a plane (Pdm) called the mean movement plane perpendicular to a geometrical rotational axis (X1... | 06/01/2004 |
| 6353278 | Piezoelectric transformer having increased voltage output A ceramic piezoelectric transformer is provided which includes a compression mechanism. The compression mechanism is made up of, for example, a bolt and a nut which add a given compressive stress to a transformer body in a lengthwise direction thereof for... | 03/05/2002 |
| 6323579 | Ultrasonic driving motor A fixing member is inserted under pressure into a central hole of an ultrasonic vibrator, a case and a center axle are fixed by a screw, a bearing is fixed on an end portion of the center axle, a rotor is mounted to rotate by the bearing, a connection mem... | 11/27/2001 |
| 6278221 | Ultrasonic motor and electronic apparatus with ultrasonic motor A small, efficient and stable ultrasonic motor is provided, wherein force is prevented from varying before and after assembly and can be adjusted after assembly without requiring troublesome operations. An electronic apparatus with such a ultrasonic motor... | 08/21/2001 |
