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6259188 |
Piezoelectric vibrational and acoustic alert for a personal communication device
An alert apparatus for a personal communication device includes a mechanically prestressed piezoelectric wafer positioned within the personal communication device and an alternating voltage input...
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6255757 |
Microactuators including a metal layer on distal portions of an arched beam
A microelectromechanical (MEMS) device is provided that includes a microelectronic substrate and a thermally actuated microactuator and associated components disposed on the substrate and formed as...
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6252332 |
Ultrasonic motor
An ultrasonic motor includes a vibrator vibrating in conformity with a frequency voltage. A relative motion member effects relative vibration in conformity with the vibration of the vibrator. The...
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6252334 |
Digital control of smart structures
Modular control patches including assemblies of sensors and actuators are provided to impart or control vibration of foundation members such as struts in aerospace apparatus. Local digital...
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6252333 |
Stage utilizing ultrasonic motor and electronic equipment and printer utilizing the stage
A stage comprises a first moving body mounted on a support base for movement in a first direction (e.g., X direction) relative to the support base. A second moving body is mounted on the first...
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6251658 |
Inertial impact drill for cytological applications
An inertial impact drill for diverse applications in cytology such as in-vitro fertilization, genetic research, pharmaceutical research, cloning, etc., is designed to operate in conjunction with...
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6249075 |
Surface micro-machined acoustic transducers
A micro-machined transducer having a structure in which an acoustic enclosure is formed on a substrate above the plane of the substrate surface is disclosed. Forming the acoustic enclosure on the...
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6249093 |
Drive mechanism employing electromechanical transducer, photographing lens with the drive mechanism, and its drive circuit
A driving apparatus, employing a piezoelectric element, for smoothly and silently driving a focus lens of a camera over a wide range of its driving speed. The driving apparatus includes a control...
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6246157 |
Push-pull high force piezoelectric linear motor
A high force linear displacement piezoelectric motor operates with equal force and reliability in both the push and pull mode. The new motor includes a split motor shaft having with two shaft...
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6242850 |
Piezoelectric motor and a disk drive using same
A piezoelectric motor of a linear contact type contains one or more actuators placed about a rotor. Each actuator contains at least one piezoelectric vibrator with a working end urged against the...
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6241346 |
Ink jet recording head including a connecting member for controlling the displacement of piezoelectric vibrators
An ink jet recording head designed to prevent the displacement characteristic of a piezoelectric vibrator from being varied depending upon the number of simultaneously driven piezoelectric...
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6242846 |
Vibration actuator to control pitching vibration
An ultrasonic actuator to suppress or eliminate pitching vibration arising in a vibration element when driving the ultrasonic actuator and to increase driving efficiency and reduce noise. The...
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6239533 |
Piezoelectric linear step motor and variants
A piezoelectric linear stepping motor comprises a housing (1), a movable part (4); between them there are provided fixing units made in the form of two piezoelectric units: a shifting-and-fixing...
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6236143 |
Transfer having a coupling coefficient higher than its active material
A coupling coefficient is a measure of the effectiveness with which a shape-changing material (or a device employing such a material) converts the energy in an imposed signal to useful mechanical...
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6231811 |
Ceramic substrate and sensor element using the ceramic substrate
A ceramic substrate and a sensor element using the ceramic substrate. The ceramic substrate has a flat substrate in which an envelopment space is formed and a porous body disposed so as to cover...
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6232701 |
Piezoelectric component and method for the manufacture thereof
A piezoelectric component in the form an actuator having a monolithic multi-layer stack is disclosed. The stack comprises a large active cross sectional area and simultaneously exhibits high...
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6229247 |
Multi-layer piezoelectric electrical energy transfer device
A multi-layered piezoelectric electrical energy transfer device has its input and output sides electrically isolated from each other. As a transformer, the device provides step-down voltage...
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6222304 |
Micro-shell transducer
A micro-shell transducer includes a substrate; an electro-active medium mounted on the substrate and including an arched section spaced from the substrate defining a chamber between the substrate...
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6222303 |
Piezoelectric actuator having an array of drive columns
A piezoelectric actuator has a base, and an array of drive columns separated by grooves and each having a top surface for outputting a displacement force. Each of the drive columns is formed in a...
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6213564 |
Anti-lock brake system with piezoelectric brake actuator
An anti-lock braking system includes a moveable member to be braked and a friction brake for applying a braking force. A controller actuates the friction brake in accordance with braking force...
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6215227 |
Thickness mode piezoelectric transformer with end-masses
A thickness mode piezoelectric transformer is provided that has masses attached to opposing faces of the transformer. The end-masses increase the thickness of the transformer and decrease its...
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6215225 |
Non-directional touch signal probe
A stylus has a piezoelectric element support part to support and fix piezoelectric elements. The piezoelectric element support part is a regular polygonal body and its cross section orthogonal to...
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6215230 |
Alternately stacked piezoelectric actuator in which each electrode layer leaves an alternately L-shaped stripe of piezoelectric material uncovered
A stacked-type piezoelectric actuator includes a rectangular stack body having a plurality of piezoelectric ceramic layers and a plurality of internal electrode layers stacked alternately in a...
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6211607 |
Actuator using electro-mechanical transducer
An actuator using an electro-mechanical transducer, the actuator comprising: the electro-mechanical transducer; a fixed portion securely coupled to one end of the electro-mechanical transducer to...
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6211606 |
Piezoelectric actuator and method for manufacturing same
Disclosed herein is a piezoelectric actuator comprising a plurality of driving columns separated by grooves in which the width of each driving column in the direction of the groove width widens...
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6208065 |
Piezoelectric transducer and actuator using said piezoelectric transducer
A piezoelectric transducer of a new laminated structure is provided that is easy to fabricate, produces a large amount of motive energy and has high mechanical strength. Electrodes are installed on...
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6201339 |
Piezoelectric actuator
A piezoelectric actuator has a vibrating member having a generally central portion and a vibratable cantilever extending from the central portion. The cantilever has a first major surface, a second...
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6194813 |
Extended-range xyz linear piezo-mechanical scanner for scanning-probe and surface force applications
A piezo-mechanical scanner that provides independent and linear displacements in three orthogonal directions with high sensitivity in the normal z direction and high range in the lateral x and y...
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6194812 |
Controller with an actuator of controllable length and device for transmitting the deflection of an actuator
A device for transmitting a deflection of a piezoelectric actuator to a movable tappet includes a pressure chamber between the piezoelectric actuator and the tappet. The pressure chamber is...
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6191521 |
Vibration damper assembly for a vibrating structure gyroscope resonator
A vibration damper assembly for a ring resonator of a vibrating structure gyroscope has a female portion attachable to a body of the gyroscope so as to have limited resiliency with respect to the...
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6191519 |
Smart structures for vibration suppression
Modular control patches including assemblies of sensors and actuators are provided to impart or control vibration of foundation members such as struts in aerospace apparatus. Local analog...
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6191522 |
Piezoelectric actuator with low stress electrodes
The present invention relates to a piezo-electric torque actuator with low stress electrodes. The present invention is specially used to produce tilting motions in high frequency ranges. The...
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6188161 |
Driving apparatus using transducer
A driving apparatus includes an electromechanical transducer that is connected to a drive pulse generating means and that expands and contracts, a driven member that is connected to one end of the...
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6183426 |
Ultrasonic wave applying apparatus
An ultrasonic wave applying apparatus which is safe and convenient for use. The apparatus includes an hand-held applicator having a vibration element which is, in use, contact with a skin of a user...
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6184609 |
Piezoelectric actuator or motor, method therefor and method for fabrication thereof
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6175182 |
Pseudo-shear mode actuator
The present invention is a new type of high-strain, pseudo-shear mode piezoelectric ceramic actuator. The pseudo-shear mode actuator employs a stack of pre-poled rectangular ceramic sheets. The...
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6169355 |
Piezoelectric actuating element for an ink jet head and the like
An ink jet head has body having a plurality of independent ink compartments each having an inlet orifice, an outlet orifice and a piezoelectric ink actuating element structurally associated with...
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6166478 |
Method for assembly of microelectromechanical systems using magnetic actuation
A microelectromechanical system (MEMS) includes at least two hinged flaps, each having a different amount of Permalloy or other magnetic material. The flaps are hinged at an angle to each other,...
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6157115 |
Mechanical amplifier
A mechanical amplifier has an elongated beam rotatable about a virtual pivot point in an amount proportional to the displacement of an actuator connected to the amplifier. A pair of ceramic...
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6153966 |
Biocompatible, implantable hearing aid microactuator
A biocompatible, implantable microactuator (82) for a fully implantable hearing aid system includes a hollow body (84) that has an open first end (88) and, open first and second faces (94a and...
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6150902 |
Electronic component, ladder filter and communication apparatus
A ladder filter includes an insulation substrate and a plurality of pattern electrodes provided on one major surface of the insulation substrate. A piezoelectric resonator which is a first series...
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6150752 |
Acoustic transducer with liquid-immersed, pre-stressed piezoelectric actuator in acoustic impedance matched transducer housing
A liquid-filled acoustic transducer for finishing an exposed surface of a work medium, such as plastic concrete, transmits acoustic energy generated within an enclosed liquid medium, through a...
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6150750 |
Piezoelectric linear step motor
A piezoelectric linear stepping motor comprises a cylindrical housing (1), a movable part (4) and fixing devices between them. The fixing devices comprise at least two piezoelectric units (2,3)....
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6147435 |
Mechanism for driving a screw rod by supersonic vibration
In order to provide a mechanism for driving a screw rod by supersonic vibrations, which may achieve space savings, prevent back-lash of a work rack, and effect smooth operation, a first screw rod...
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6144141 |
Piezoelectric resonator and electronic component containing same
A piezoelectric resonator has a base member including laminated piezoelectric layers and internal electrodes. The base member is polarized in different directions at both sides of each internal...
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6142614 |
Piezoelectric actuator using passivation film or interlayer insulating film along with an insulating film to obtain better adhesion
Lower electrodes are disposed independently of each other for respective ink cavities through a silicon oxide film on a silicon substrate. PZT films and upper electrodes are disposed on the...
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6140747 |
Piezoelectric transformer element and method of manufacturing the same
A piezoelectric transformer element includes a piezoelectric plate made of a ceramic material, and input and output electrodes formed on the piezoelectric plate, and outputs a voltage from the...
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6140750 |
Actuator using electromechanical transducer and apparatus employing the actuator
A linear actuator using a piezoelectric element having high mechanical strength, high driving efficiency and high reliability in which left and right end portions of the piezoelectric element in a...
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6140742 |
High authority actuator
An actuator composed of a plurality of telescoping piezoelectric members ch produces a displacement that is the sum of the length of the members.
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6121856 |
Bulk acoustic wave device with lamb wave mode selection
A bulk acoustic wave delay line is disclosed having a thin, amorphous metal substrate, and deposited on the first and second surface at each end of which is a very thin layer of a piezoelectric...
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