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| Number | Title | Issue Date |
| 7633208 | Driving device capable of transferring vibrations generated by an electro-mechanical transducer to a vibration friction portion with a high degree of efficiency A driving device includes an electro-mechanical transducer having first and second end portions opposite to each other in an expansion/contraction direction, a stationary member coupled to the first end portion of the electro-mechanical transducer, a vibration frict... | 12/15/2009 |
| 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 |
| 7253552 | Piezoelectric actuator, timepiece, and portable device A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. Thi... | 08/07/2007 |
| 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 |
| 7199507 | Piezoelectric motors and motor driving configurations A piezoelectric motor comprising: a piezoelectric vibrator having an axis of symmetry and a first vibration mode, which when excited generates oscillatory motion of mass points in the vibrator parallel to the axis of symmetry; and at least one friction nub having a ... | 04/03/2007 |
| 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 |
| 7154113 | Techniques for wafer prealignment and sensing edge position A prealignment sensor comprising a frame fixed to a base and having a U-shape when viewed from its side. A light source is attached to a lower part of the flame. A convex lens is attached to a lower part of an inside of the frame by which diffused light of the light... | 12/26/2006 |
| 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 |
| 7026745 | Piezoelectric actuator An actuator comprises a laminate of interleaved layers of electrode plates and piezoelectric material; wherein an upper region (in use) of electrode plates is adapted when energized to effect deflections in up and down directions; a lower region of electrode plates ... | 04/11/2006 |
| 6930436 | Vibration element and vibration wave driving apparatus The present invention relates to a vibration wave driving apparatus including 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 ... | 08/16/2005 |
| 6198202 | Vibration actuator A vibration actuator has a vibration member for generating a vibration, and a contact member which contacts the vibration member and moves relative thereto when the vibration member vibrates. A portion of the vibration member, which is in sliding-contact ... | 03/06/2001 |
| 6150749 | Vibration driven actuator A convex sliding portion (30) is provided on the driving surface of a vibrating member (1) formed with a frictional layer (31) on its surface. Inner and outer ridges (2c, 2b) of a contact portion (21) of a rotor (2) formed with a frictional layer (2a) on ... | 11/21/2000 |
| 6107725 | Vibration type driving device and apparatus using the same A vibration type driving device includes a vibration element by which vibration is excited, and a contact element brought into contact with the vibration element and relatively moved by the vibration. One of two opposing slide portions of the vibration an... | 08/22/2000 |
| 5760529 | Vibration wave actuator and system using the same A vibration wave actuator having a vibrating member for generating a vibration wave therein and a contact member contacting the vibrating member so as to be movable relative to the vibrating member by a friction force caused by the vibration wave, as well... | 06/02/1998 |
| 5594291 | Vibration device for vibration driven motor A vibration driven motor including a vibrating member made of a metallic material which is treated so that the elastic modulus is the same or substantially the same in respective vibration directions of the vibrations generated therein, and a rotor brough... | 01/14/1997 |
| 5548175 | Vibration driven motor A vibration driven motor is arranged so that a vibration member and a movable member are moved relative to each other by utilizing non-travelling vibration. A supporting member for the motor is disposed at the position of the loop of the aforesaid vibrati... | 08/20/1996 |
| 5357164 | Ultrasonic motor An ultrasonic motor characterized by comprising: an ultrasonic oscillator for generating ultrasonic oscillation on a specific surface; a movable body pressure-bonded to a specific surface of the ultrasonic oscillator for moving the movable body by the ultrason... | 10/18/1994 |
| 5274295 | Vibration driven motor The contact portion of a movable member is endowed with a spring property to thereby effect uniform contact over the entire circumference of the movable member, thereby realizing an ultrasonic motor which is good in efficiency and suffers little from the ... | 12/28/1993 |
| 5245243 | Ultrasonic motor with a friction component In the ultrasonic motor according to the present invention, a carbon fiber reinforced plastic whose carbon fibers are arranged in one direction is used for a friction member applied to a sliding surface of a stator or rotor; Vickers hardness is Hv550 or m... | 09/14/1993 |
| 5162692 | Ultrasonic oscillator and ultrasonic motor using the same Disclosed is an ultrasonic oscillator comprising piezoelectric elements and a resonator fixed thereto and having one or more inclined surfaces, elliptical oscillations being generated at the front end of the resonator. Also disclosed is an ultrasonic moto... | 11/10/1992 |
| 5122700 | Frictional material for vibration wave driven motor A vibration wave driven motor in which a vibration member and a member brought into pressure contact with the vibration member are frictionally driven relative to each other through a frictional material secured to the driving portion of one of them, char... | 06/16/1992 |
| 5115161 | Ultrasonic motor An ultrasonic motor comprises a stator which generates a combined ultrasonic elliptic vibration which is a combined vibration of longitudinal and torsional vibrations, and a rotor which is in press-contact with the stator and driven by the ultrasonic elli... | 05/19/1992 |
