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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...
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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...
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7592738 |
Ultrasonic motor
With the invention, both a longitudinal vibration mode and a flexural vibration mode are independently detected, or only the longitudinal vibration mode is detected, without using a special device....
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7583564 |
Piezoelectric actuator and electronic equipment with piezoelectric actuator
To provide a piezoelectric actuator whereby impact resistance can be greatly improved without complicating the design or causing a reduction in drive efficiency. When a piezoelectric actuator 31 ...
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7576472 |
Ultrasonic motor
An ultrasonic motor that is capable of stable driving by preventing uneven rotation of a driven body and maintaining the drive efficiency is provided. The ultrasonic motor includes a plurality of...
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7573180 |
Ultrasonic motor
The invention provides an ultrasonic motor including internal electrodes provided in an ultrasonic vibrator and disposed in regions where electrical charges of the same sign are generated in one...
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7531948 |
Stacked piezoelectric element, manufacturing method thereof and vibration wave driving apparatus
A stacked piezoelectric element comprising that can suppress periodic damping on miniaturization of a vibration wave motor and improve its performance. A stacked piezoelectric element comprises...
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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...
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7508114 |
Ultrasonic motor
It is an object to provide an ultrasonic motor that can stably and finely (that is, minutely) move a driven body. The invention provides an ultrasonic motor comprising an ultrasonic vibrator which...
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7471030 |
Spring biasing locking mechanism for step and repeat motors
A spring biasing locking mechanism is provided for a step and repeat motor. The motor includes a base having a channel, an output member in the channel, at least one translator drive element and...
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7466062 |
Vibration wave motor and lens barrel
A vibration wave motor includes a housing, a rotor, a bearing member, a vibrator serving as an actuator and having a support shaft and a driving element, and a leaf spring having a pressing...
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7459832 |
Electro-mechanical energy converter and vibration wave driving
At least one exemplary embodiment is directed to an electro-mechanical energy converter and a vibration wave driving apparatus that can facilitate miniaturization, high power, low cost and low...
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7436101 |
Multistage piezoelectric drive
A piezoelectric motor comprising a vibratory element is configured to move a first driven element by vibrations generated by the vibratory element. A second driven element is brought into...
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7425770 |
Vibration wave motor
Provided is a vibration wave motor including a pressurizing mechanism and a guide mechanism which are used for a moving member and can be thinned. The influence of a restoring force can be...
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7378777 |
Drive apparatus and device with same
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...
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7362036 |
Ultrasonic oscillator
An ultrasonic oscillator, comprises a group of internal electrodes divided into four approximately equal parts along two directions, i.e., a second direction which is perpendicular to a direction...
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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...
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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...
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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...
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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...
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7148605 |
Biaxial piezoelectric motor
A piezoelectric motor that allows movement of an arbitrary object in an arbitrary direction is described. The piezoelectric motor includes at least two piezoelectric drives positioned to direct...
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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...
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7119476 |
Piezoelectric actuator and device
Detection electrodes 82 D and 82 E are formed at positions that include an antinode of a flexural oscillation mode. The strain of flexural oscillation reaches a maximum and the effects on the...
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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...
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7109639 |
Vibration-type driving device, control apparatus for controlling the driving of the vibration-type driving device, and electronic equipment having the vibration-type driving device and the control apparatus
A vibration-type driving device comprises a vibration element including a driving member and an electro-mechanical energy conversion element having an electrode and arranged to displace the driving...
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7109638 |
Piezoelectric actuator, timepiece, and electronic device
A piezoelectric actuator A has an oscillator 10 that has a flat base layer 32 and piezoelectric elements 30, 31 layered on the base layer 32 and oscillates as a result of a drive signal...
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7078847 |
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...
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7053525 |
Ultrasonic linear motor
An ultrasonic linear motor according to the present invention has a configuration wherein driving elements are glued at portions on faces of an ultrasonic transducer, facing one another, where...
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6933656 |
Ultrasonic motor having integrated electrodes and manufacturing method of the same
A stator includes first and second piezoelectric elements, a flexible aluminum-based connective arrangement and upper and lower aluminum-based metal blocks. The flexible aluminum-based connective...
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6888288 |
Vibration member and vibration wave driving apparatus using the vibration member
A vibration member for use in a vibration wave driving apparatus, and a vibration wave driving apparatus, the vibration member including an elastic member having a through hole, a fastening member...
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6806620 |
Piezoelectric drive excited by longitudinal and flexural waves
The invention relates to a piezoelectric drive, containing a driven element ( 1 ) fitted with a friction layer ( 2 ) and at least one solid-state plate-shaped piezoelectric transformer ( 6 ) as...
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6776563 |
Method of controlling elliptical vibrator
An elliptical vibratory cutting apparatus includes a control mechanism which applies a sinusoidal voltage having a predetermined phase difference to piezoelectric elements. Flexure vibrations are...
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6771004 |
Actuator using displacement element
Piezoelectric elements 10 and 10 ′ are driven so as to satisfy the relationship Nt=X0(1/(1/k2+1/k3)−1/(1/k1+1/k2+1/k3)) when the drive member, tip 20 , and driven member, rotor 40 , are...
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6723524 |
Immunoassay method and kit
An immunoassay, e.g. ELISA, method and kit for determining (preferably quantitatively) an analyte adsorbed at a surface or present in a liquid sample, comprising binding the analyte to a solid...
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6700305 |
Actuator using a piezoelectric element
The present invention is an actuator using a piezoelectric element as a displacement element, wherein a drive signal voltage and current are reduced, and power consumption is reduced, while output...
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6611081 |
Vibration actuator with two vibration modes
A vibration actuator includes a vibration element, which simultaneously generates a radial symmetric expansion vibration mode in which it expands and contracts in the radial direction and a...
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6492760 |
Actuator
A truss type actuator including two piezoelectric devices drives a chip member provided at a crossing point of the piezoelectric devices for moving along an elliptic or a circular trail. Only one...
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6469417 |
Truss actuator
The present invention provides a truss actuator offering reduced noise, vibration and wear, which is capable of speed control of the driven member and can control the output to the driven member at...
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6459190 |
Switched actuator control
The present invention discloses an electromechanical actuator arrangement and a driving device for such an arrangement, having a plurality of drive element to be driven according to a wailing...
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6448694 |
Actuator and driving method thereof
An actuator includes at least two piezoelectric devices arranged for crossing displacing directions thereof at a predetermined angle, a chip member provided at a coupling point of the piezoelectric...
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6411010 |
Piezoelectric actuator
A piezoelectric actuator has a base and a movable body disposed over a surface of the base for undergoing movement relative thereto. The movable body has a frame and at least one cantilever having...
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6396194 |
Ultrasound motor and electronic apparatus equipped with ultrasonic motor
An ultrasonic motor has a vibrating body polarized in a given direction. The vibrating body comprises a first piezoelectric body and a second piezoelectric body laminated to the first piezoelectric...
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6384515 |
Multidirectional motors
A multidirectional motor system for transmitting motion to a moveable element in at least two directions that are not collinear comprising a first motor that transmits motion to the moveable...
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6362557 |
Ultrasonic method and actuator for inducing motion of an object
An actuator scaled to macroscopic or microscopic sizes, uses ultrasonic energy to induce motion of an object in a desired direction. The actuator includes one or more pair of piezoelectric...
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6121717 |
Driving device for at least two rotation elements, which device comprises at least one piezoelectric driving element
The invention relates to a driving device for at least two rotation elements, which device comprises at least one piezoelectric driving element. The object of the invention is to provide such a...
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6104122 |
Actuator
This invention is an actuator including a vibration member to which a piezoelectric element is fixed, a plurality of projections arranged at node positions of a tertiary stationary wave on the...
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6072266 |
Vibration actuator
A vibration actuator has an elastic member formed into a ring shape, an electro-mechanical converting element joined to the elastic member, and a relative moving member which is in press contact...
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6066911 |
Ultrasonic driving element
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6064140 |
Ceramic motor
A micromotor for moving a body including at least one rectangular piezoelectric plate having long and short edges and first and second faces, electrodes attached to the first and second faces and a...
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6043586 |
Vibration actuator
A vibration actuator produces a driving force by generating elliptic motion in the surface of an elastic member through electromechanical converting elements. The vibration actuator then generates...
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