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Piezoelectric patents



      
           
This page is updated frequently with new Piezoelectric-related patent applications. Subscribe to the Piezoelectric RSS feed to automatically get the update: related Piezoelectric RSS feeds. RSS updates for this page: Piezoelectric RSS RSS


Piezoelectric actuator array

Océ-technologies B.v.

Piezoelectric actuator array

Method for producing piezoelectric actuator and method for producing liquid transport apparatus

Brother Kogyo

Method for producing piezoelectric actuator and method for producing liquid transport apparatus

Method for producing piezoelectric actuator and method for producing liquid transport apparatus

Seiko Epson

Liquid ejecting apparatus and head unit

Date/App# patent app List of recent Piezoelectric-related patents
05/21/15
20150142358
 Rapid interrogation  elastic wave resonant devices patent thumbnailnew patent Rapid interrogation elastic wave resonant devices
A method for interrogating an elastic wave device includes probing the response of a piezoelectric resonant device at a single frequency alternately on either side of a previously determined first resonance frequency, to characterize this resonance frequency characteristic of the measured physical quantity, by correlating this single measurement with a previously performed measurement.. .
Senseor
05/21/15
20150142295
 Monitoring  monitoring a fuel injector  of an internal combustion engine of a vehicle patent thumbnailnew patent Monitoring monitoring a fuel injector of an internal combustion engine of a vehicle
Disclosed is a method for monitoring a fuel injector, the injector including a piezoelectric actuator controlling a valve unit to open or close the injector, the fuel injector including an actuator play. The method includes: measuring a plurality of compensation times of the actuator play during a simulation step preceding an injection for a given plurality of fuel pressures; calculating a parameter representing the current actuator play per the measured compensation times; comparing the parameter representing the calculated current actuator play with a predetermined reference parameter of the actuator play; and transmitting a warning message if the reference parameter is exceeded; the parameter representative of the current actuator play being calculated on the basis of a polynomial function of the measured compensation times.
Continental Automotive Gmbh
05/21/15
20150141976
 Ultrasonic anastomosis instrument with piezoelectric sealing head patent thumbnailnew patent Ultrasonic anastomosis instrument with piezoelectric sealing head
An apparatus includes a body, a shaft, an ultrasonic element, and an annular clamp pad. The shaft extends distally from the body.
Ethicon Endo-surgery, Inc.
05/21/15
20150141834
 Piezoelectric composition and  producing same, piezoelectric element/non-lead piezoelectric element and  producing same, ultrasonic probe and diagnostic imaging device patent thumbnailnew patent Piezoelectric composition and producing same, piezoelectric element/non-lead piezoelectric element and producing same, ultrasonic probe and diagnostic imaging device
The present invention is a piezoelectric composition and a piezoelectric element using the piezoelectric composition, the composition being characterized by: having a perovskite structure represented by general formula abo3; being represented by composition formula x(bi0.5k0.5)tio3-ybi(mg0.5ti0.5)o3-zbifeo3, x+y+z=1 in the composition formula above; and in a triangular coordinate using x, y and z in the composition formula above, having a composition represented by a region which is surrounded by a pentagon abcde with apexes of point a (1, 0, 0), point b (0.7, 0.3, 0), point c (0.1, 0.3, 0.6), point d (0.1, 0.1, 0.8) and point e (0.2, 0, 0.8) and which does not include the line segment ae that connects point a (1, 0, 0) and point e (0.2, 0, 0.8).. .
Konica Minolta, Inc.
05/21/15
20150141827
 Ultrasonic device,  manufacturing the same, electronic device and ultrasonic imaging device patent thumbnailnew patent Ultrasonic device, manufacturing the same, electronic device and ultrasonic imaging device
An ultrasonic device includes a substrate having a first opening, a second opening and a wall part partitioning the first opening and the second opening; a first vibration film and a second vibration film which close the first opening and the second opening respectively; a first piezoelectric element and a second piezoelectric element which are formed on surfaces of the first vibration film and the second vibration film opposite to the substrate; an acoustic matching layer which is disposed within the first opening and the second opening so as to come into contact with the first vibration film and the second vibration film.. .
Seiko Epson Corporation
05/21/15
20150139457
 Speaker device and electronic device patent thumbnailnew patent Speaker device and electronic device
A speaker device (100) includes a circuit board (10), a piezoelectric element (20), a spacer (30) which is disposed between the piezoelectric element (20) and the circuit board (10), and an air chamber (40). The spacer (30) fixes the piezoelectric element (20) to the circuit board (10) so that an internal space (31) is formed between the piezoelectric element (20) and the circuit board (10).
Nec Casio Mobile Communications, Ltd.
05/21/15
20150139456
 Acoustic generator, acoustic generation device, and electronic device patent thumbnailnew patent Acoustic generator, acoustic generation device, and electronic device
A purpose is to obtain a frequency characteristic of a good sound pressure. To achieve the purpose, an acoustic generator according to an embodiment includes a piezoelectric element (exciter), a flat vibrating body, and a resin layer.
Kyocera Corporation
05/21/15
20150138920
 Modulated echo underwater communications and energy harvesting patent thumbnailnew patent Modulated echo underwater communications and energy harvesting
A system is provided that includes a gateway node and terminal node. The gateway node may be configured to produce a continuous acoustic wave for propagation through a fluid such as water, and detect an echo thereof.
The Boeing Company
05/21/15
20150138669
 Head gimbal assembly and disk unit provided with the same patent thumbnailnew patent Head gimbal assembly and disk unit provided with the same
A head gimbal assembly includes a load beam, a wiring member including a metal plate disposed on the load beam, a magnetic head attached to a tip section of the wiring member, and a piezoelectric element that is fixed to and supported by supporting pads and deforms in response to a voltage applied thereto. The metal plate includes a tip section to which the magnetic head is fixed, and a base section that is spaced apart from the tip section and is fixed to the load beam.
Kabushiki Kaisha Toshiba
05/21/15
20150138556
 Monitoring devices with energy-harvesting power sources patent thumbnailnew patent Monitoring devices with energy-harvesting power sources
An apparatus worn by a subject includes an energy-harvesting power source, at least one physiological sensor and/or at least one environmental sensor coupled to the energy-harvesting power source. The at least one physiological sensor senses physiological information from the subject and the at least one environmental sensor senses environmental information in a vicinity of the subject.
Valencell, Inc.
05/21/15
20150138296
new patent

Dynamic adjustable focus for led writing bars using piezoelectric stacks


According to aspects of the embodiments, there is provided methods of dynamically focusing an led print bar or printhead using piezoelectric stacks. The stack is mounted on either end of the led bar to adjust the focus of the bar against the photoreceptor surface.
Xerox Corporation
05/21/15
20150138281
new patent

Piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generating apparatus


A piezoelectric element includes: a first electrode; a piezoelectric body layer which is provided on the first electrode; and a second electrode which is provided on the piezoelectric body layer, the piezoelectric body layer is made of a composite oxide with a perovskite structure, which contains bismuth, barium, iron, titanium, and strontium, and the content of strontium with respect to barium is equal to or greater than 5 mol % and equal to or less than 18 mol %.. .
Seiko Epson Corporation
05/21/15
20150138276
new patent

Piezoelectric actuator and making a piezoelectric actuator


In one example, a piezoelectric actuator includes a piezoelectric material, a first conductor on a first part of the piezoelectric material, and a membrane bonded to the first conductor with an adhesive. The first conductor has a root mean square surface roughness of at least 10 nm at the bonding interface with the membrane..
Hewlett-packard Development Company, L.p.
05/21/15
20150138267
new patent

Liquid ejecting apparatus and head unit


A liquid ejecting apparatus includes an original drive signal generation section that generates an original drive signal, a signal modulation section that modulates the original drive signal and generates a modulation signal, a signal amplification section that amplifies the modulation signal and generates an amplification modulation signal, a signal conversion section that converts the amplification modulation signal into a drive signal, a piezoelectric element that deforms by the drive signal, a cavity that expands or contracts due to deformation of the piezoelectric element, a nozzle that communicates with the cavity and ejects a liquid in response to increase and decrease of a pressure inside the cavity, and a temperature detection section that detects a temperature of the signal conversion section.. .
Seiko Epson Corporation
05/21/15
20150138265
new patent

Liquid discharge apparatus


A liquid discharge apparatus includes: a channel unit including: a discharge port; a first channel through which liquid to be supplied to the discharge port flows; and a second channel communicated with the first channel and the discharge port; an actuator including a first and second electrodes and a piezoelectric layer, and being configured to apply pressure to the liquid in the second channel; and a signal supply unit configured to selectively supply a discharge driving signal and a non-discharge driving signal to the actuator. The discharge driving signal includes a first voltage signal which drives the actuator to discharge the liquid from the discharge port, and the non-discharge driving signal includes a plurality of second voltage signals each of which drives the actuator not to discharge the liquid from the discharge port..
Brother Kogyo Kabushiki Kaisha
05/21/15
20150137908
new patent

Acoustic wave filter and duplexer


An acoustic wave filter includes series resonators and parallel resonators that have a piezoelectric film on an identical substrate and have a lower electrode and an upper electrode, wherein: one of the series resonators and the parallel resonators have a temperature compensation film on a face of the lower electrode or the upper electrode that is opposite to the piezoelectric film in a resonance region, the compensation film having an elastic constant of a temperature coefficient of which sign is opposite to a sign of a temperature coefficient of an elastic constant of the piezoelectric film; and the other have an added film on the same side as the temperature compensation film on the lower electrode side or the upper electrode side compared to the piezoelectric film in the resonance region in the one of the series resonators and the parallel resonators.. .
Taiyo Yuden Co., Ltd.
05/21/15
20150137817
new patent

Casing mounted em transducers having a soft magnetic layer


Illustrative permanent electromagnetic (em) monitoring systems and methods have a casing string positioned inside a borehole and equipped with one or more em transducer modules having a layer of soft magnetic material that substantially encircles the casing string to amplify a signal response of a magnetic field transmitting and/or sensing element. The layer preferably has an axial dimension at least twice an axial dimension of the magnetic field sensing element, with a relative permeability at least twice that of the casing material.
Halliburton Energy Services, Inc.
05/21/15
20150137668
new patent

Ceramic electronic component and manufacturing ceramic electronic component


In a piezoelectric ceramic base, a contact interface in contact with an electrode has recess portions surrounded by crystal particles. An average depth t of the recess portions is preferably 1 to 10 μm, and an occupation rate of the recess portions at the contact interface is preferably 65% or more of an area ratio..
Murata Manufacturing Co., Ltd.
05/21/15
20150137667
new patent

Ceramic material, sinter, ceramic device, piezoelectricity ceramic bimorph and gluing method thereof


The present disclosure provides a piezoelectricityity ceramic material. The piezoelectricityity ceramic material includes main components that are represented by a general chemical formula of pb(mn1/3sb2/3)xzrytizo3+awt % wo3 and satisfy the following conditions: 0.02 ≦x≦0.1, 0.4≦y≦0.6, 0.4≦z≦0.6, and 0.5≦a≦3.
Aac Technologies Pte. Ltd.
05/21/15
20150137664
new patent

Piezoelectric actuator array


A piezoelectric actuator array comprising a substrate plate (10) with a number of signal leads (14) and at least one common lead (18) formed on at least one surface (12) thereof, and a number of piezoelectric bodies (30, 32) arranged in a row (34) on one surface (12) of the substrate plate and formed by dividing a common piezoelectric block, said piezoelectric bodies comprising a number of active bodies (30) each of which has, on a first side of said row (34), a signal electrode (38) in contact with one of said signal leads (14) and, on an opposite second side of the row, a common electrode (40) in contact with said common lead (18), said substrate plate (10) having at least one connector lead (16) disposed on the first side of the row (34) and electrically connected to the common lead (18) on the second side of the row, wherein said piezoelectric bodies comprise at least one piezoelectric body (32) with a conductive outer surface layer (42) that establishes an electrically conductive path from the connector lead (16) to the common lead (18).. .
Océ-technologies B.v.
05/21/15
20150137662
new patent

Apparatus and driving piezoelectric actuator, and system for driving piezoelectric actuator using the same


An apparatus for driving a piezoelectric actuator may include: a digital-to-analog conversion unit receiving digital waveform information and outputting an analog signal corresponding thereto; an amplification unit amplifying the analog signal to generate an analog voltage; and a power supply unit supplying power for the amplification. The power supply unit adjusts a level of the power using the digital waveform information..
Samsung Electro-mechanics Co., Ltd.
05/21/15
20150137531
new patent

Piezo based energy harvesting for e-latch systems


A vehicle door includes an electrically-powered latch and a user input feature that can be actuated by a user to cause the electrically-powered latch to unlatch. An electrical energy storage device is operably connected to the electrically-powered latch, and a piezoelectric device is mounted to the door.
Ford Global Technologies, Llc
05/21/15
20150137325
new patent

Semiconductor device having metal patterns and piezoelectric patterns


Provided is a semiconductor device. The semiconductor device includes a passivation layer defining a metal pattern on a first surface of a substrate, an inter-layer insulating layer disposed on a second surface of the substrate, and a piezoelectric pattern formed between the metal pattern and the passivation layer on the first surface of the substrate.
Samsung Electronics Co., Ltd.
05/21/15
20150136909
new patent

Virtual aerodynamic surface systems


A method of generating a pressure wave proximate an airflow surface and altering airflow to promote a localized lowering of skin friction over the airflow surface is described herein. A series of pressure waves may be configured to create a virtual riblet to control turbulent vortices in a boundary layer adjacent to the airflow surface creating a virtual riblet.
Rohr, Inc.
05/21/15
20150136729
new patent

Method for producing piezoelectric actuator and producing liquid transport apparatus


A vibration layer is formed by the ad method on a cavity plate before forming pressure chambers, a common electrode is formed on the vibration layer, and a piezoelectric layer is formed on the common electrode by the ad method. Subsequently, the pressure chambers are formed in the cavity plate by the etching.
Brother Kogyo Kabushiki Kaisha
05/21/15
20150135883
new patent

Adjustable steering column


In accordance with an exemplary embodiment of the invention, an adjustment assembly for allowing or preventing adjustment of a component is provided. The adjustment assembly includes a first bracket at least partially surrounding the component, a second bracket at least partially surrounding the first bracket, and a piezoelectric device biasing against one of the first bracket or the second bracket in a first position, the piezoelectric device configured to contract and release the bias against one of the first bracket and the second bracket in a second position..
Steering Solutions Ip Holding Corporation
05/21/15
20150135858
new patent

Collision position detection device, wind power generation device and wind power generation system


A collision position detection device comprises: a piezoelectric element that generates a voltage by collision; signal detector that detects a signal generated by the collision with the piezoelectric element; and processor that identifies the position of the collision with the piezoelectric element based on the signal detected by the signal detector. The piezoelectric element is a long piezoelectric element comprising a long piezoelectric body, conductors layered on both surfaces of the piezoelectric body, and a covering body that covers the peripheries of the conductors, wherein both of a leading end signal generated from a leading end of the long piezoelectric element and a back end signal generated from a back end of the long piezoelectric element can be detected to identify a collision position.
F.t. Innovation Inc.
05/21/15
20150135497
new patent

Inertial sensor and manufacturing the same


Disclosed herein are an inertial sensor and a method of manufacturing the same. The inertial sensor 100 according to a preferred embodiment of the present invention may include a membrane 110, a piezoelectric body 130 formed over the membrane 110, an electrode 140 formed on the piezoelectric body 130, a first pad 150 electrically connected with the electrode 140, a second pad 160 electrically connected with an integrated circuit 170, and a connection member 180 electrically connecting the first pad 150 with the second pad 160..
Samsung Electro-mechanics Co., Ltd.
05/14/15
20150134061

Piezoelectric composites and methods of making


There is a need for methods that can produce piezoelectric composites having suitable physical characteristics and also optimized electrical stimulatory properties. The present application provides piezoelectric composites, including tissue-stimulating composites, as well as methods of making such composites, that meet these needs.
05/14/15
20150132705

Gas combustor


The present invention relates to a gas combustor, including a base seat fastened in a housing, the base seat is formed with a seat hole allowing a gas intake control valve to be received; when a control rod of the gas intake control valve is pushed by a press button, a first and a second spring are synchronously compressed, so the first spring pushes a first thimble valve till the first spring is abutted against a first valve seat, the first thimble valve compresses a third spring and opens the first valve seat, thereby allowing fuel gas to rapidly pass the gas intake control valve; the residual displacement stroke of the control rod is absorbed by the first spring, and the fuel gas passing the gas intake control valve is enabled to enter a flame device so as to be ignited by static spark generated by a piezoelectric device.. .
05/14/15
20150132529

Piezoelectric ceramic, manufacturing same, and piezoelectric ceramic speaker using same


A piezoelectric ceramic has a primary phase constituted by ceramic grains of perovskite crystal structure containing pb, nb, zn, ti, and zr, and a secondary phase constituted by zno grains present sporadically in the primary phase. The piezoelectric ceramic of high kr and high specific dielectric constant can be sintered at low temperature and exhibit minimal characteristics variations..
05/14/15
20150132475

Method for preparing a lead-free piezoelectric thin film


The present invention discloses a method of preparing a lead-free piezoelectric thin film comprising the steps of: providing a precursor solution comprising at least one alkali metal ion, a polyamino carboxylic acid, and an amine; depositing the precursor solution on a substrate to form a film; and annealing the film. The present invention also provides a lead-free piezoelectric thin film prepared according to the method, a precursor solution for use in the method and a method of preparing the precursor solution..
05/14/15
20150131838

Sound outputting device


According to an aspect, a sound outputting device includes a front unit, a first side unit, a second side unit, a sound transmitting portion, and a piezoelectric speaker. The first side unit is coupled to one end portion of the front unit.
05/14/15
20150131823

Plane-type speaker and av apparatus


A plane-type speaker where, on one of the main surfaces of an exciter film, there are placed piezoelectric films which are expanded and contracted by sound-releasing driving signals applied thereto. An oscillation plate is secured to the excited film through frame members.
05/14/15
20150131822

Plane-type speaker and av apparatus


A plane-type speaker where, on one of the main surfaces of an exciter film, there are placed piezoelectric films which are expanded and contracted by sound-releasing driving signals applied thereto. An oscillation plate is secured to the excited film through frame members.
05/14/15
20150131821

Piezoelectric vibration element, and piezoelectric vibration device and portable terminal using piezoelectric vibration element


A piezoelectric vibration element which includes at least a plurality of electrodes and a plurality of piezoelectric layers alternately disposed in a first direction, and performs bending vibration in the first direction so as to change amplitude in a second direction vertical to the first direction by inputting an electric signal, and in which a center of a facing portion in the second direction is provided at a different position from a center of the piezoelectric vibration element in the second direction, the facing portion including a portion in which one of the piezoelectric layers interposed between the electrodes that are disposed so as to be adjacently opposed to each other, and a piezoelectric vibration device and a portable terminal using the piezoelectric vibration element are provided.. .
05/14/15
20150130877

Liquid ejecting head and liquid ejecting apparatus


A liquid ejecting apparatus is provided with an actuator substrate on which a piezoelectric actuator that generates a pressure change in a pressure generation chamber, which is in communication with a nozzle opening that ejects a liquid, is provided. The liquid ejecting head is provided with lead-out wiring that is led out from the piezoelectric actuator to the top of the actuator substrate, the lead-out wiring is provided with an adhesive layer that is provided on an actuator substrate side, and a conductive layer that is provided on a side of the adhesive layer which is opposite the actuator substrate, and the adhesive layer has a width that is narrower than the conductive layer in at least a parallel arrangement direction of the lead-out wiring..
05/14/15
20150130770

Piezoelectric sheet, touch panel using the same, and input-output device using them


Disclosed is an active matrix liquid crystal display device with transverse electric field system, which improves afterimage. One electrode of many pixel comb electrodes is thicker in width than the other pixel comb electrode and common comb electrodes and is equal to a width of the common shield electrode covering through a second insulator film on video signal wirings.
05/14/15
20150130625

Piezoelectric user interface


An apparatus includes a touchscreen keypad and one or more devices that generate a tactile response to a user of the apparatus when a key in the keypad is pressed. In order accomplish a simple construction requiring a minimum of space, the one or more devices that generate that tactile response may include at least one piezoelectric element configured to generate vibration which is forwarded to the user in response to a key of the touchscreen keypad being pressed..
05/14/15
20150130561

Piezoelectric thin film resonator, filter and duplexer


A piezoelectric thin film resonator includes: a substrate; a piezoelectric film provided on the substrate; a lower electrode and an upper electrode that sandwich at least a part of the piezoelectric film and face with each other; and an inserted film that is inserted in the piezoelectric film, is provided on an outer circumference region in a resonance region in which the lower electrode and the upper electrode sandwich the piezoelectric film and face with each other, is not provided in a center region of the resonance region, and has a cutout in the resonance region.. .
05/14/15
20150130560

Piezoelectric thin-film resonator, filter and duplexer


A piezoelectric thin-film resonator includes, a substrate, a piezoelectric film provided on the substrate, and a lower electrode and an upper electrode that face each other through the piezoelectric film. The piezoelectric film has an air space that is provided in at least part of an outer circumferential part of a resonance region in which the upper and lower electrodes face each other through the piezoelectric film and is not provided in a central part of the resonance region..
05/14/15
20150130559

Piezoelectric thin film resonator, filter and duplexer


A piezoelectric thin film resonator includes: a piezoelectric film provided on a substrate; a lower electrode and an upper electrode sandwiching at least a part of the piezoelectric film and facing with each other; and an inserted film that is inserted in the piezoelectric film, is provided in an outer circumference region of a resonance region and is not provided in a center region of the resonance region, wherein: an angle between an edge face of the lower electrode and a lower face of the lower electrode in the resonance region is an acute angle; and a width of the inserted film in the resonance region on a side for extracting the upper electrode from the resonance region is larger than another width of the inserted film in the resonance region on a side for extracting the lower electrode from the resonance region.. .
05/14/15
20150130325

Piezoelectric element, and piezoelectric vibrating device, portable terminal, acoustic generator, acoustic generating device and electronic apparatus including the same


There are provided a piezoelectric element in which the peeling of a surface electrode is suppressed, and a piezoelectric vibrating device, a portable terminal, an acoustic generator, an acoustic generating device and an electronic apparatus including the same. A piezoelectric actuator includes a piezoelectric element including a plate-shaped stacked body including inner electrodes and piezoelectric layers laminated, a surface electrode disposed on one of main surfaces of the stacked body, the surface electrode being electrically connected to the inner electrodes.
05/14/15
20150130324

Apparatus for generating mechanical oscillations and a determining the resonance frequency of such apparatus


A device for generating mechanical oscillations is provided. The device has a first mass, a second mass, and a piezoelectric excitation system mechanically coupling the first mass and the second mass to one another, with the piezoelectric excitation system having a stiffness.
05/14/15
20150129838

Bare quantum dots superlattice photonic devices


Manipulation of the passivation ligands of colloidal quantum dots and use in qd electronics. A multi-step electrostatic process is described which creates bare qds, followed by the formation of qd superlattice via electric and thermal stimulus.
05/14/15
20150129792

Piezoelectric composition and piezoelectric element


The present invention aims to provide an excellent piezoelectric composition and an excellent piezoelectric element if the piezoelectric properties especially a high spontaneous polarization and a sufficiently high resistivity, the low pollution, the environment and the ecology are considered. In the piezoelectric composition, the main component contains the substance represented by the following formula with a perovskite-typed structure, (bi(0.5x+y+z)na0.5x)m(tix+0.5ymg0.5yalz)o3.
05/14/15
20150129681

Ultrasonic atomization device


The present invention is an ultrasonic wave atomizing device including: a liquid absorbent wick (22) for absorbing a solution from a solution container; and a vibrating plate (32) which has multiple micropores (36) penetrating the vibrating plate (32) in a thickness direction and is for atomizing the solution which has been supplied via the liquid absorbent wick (22) by vibration of a piezoelectric element (31), the vibrating plate (32) includes a truncated-cone-shaped convex part (37), and the solution is a solution in which at least an organic solvent and an active ingredient are mixed and whose viscosity is 1.7 mpa·s (20° c.) to 5.0 mpa·s (20° c.). This structure makes an atomizing height higher, which improves diffusibility of atomized liquid..
05/14/15
20150128727

Surface-mounted collision sensor, and collision detection


An apparatus assembly of a medical apparatus is equipped for collision detection by attaching a polyvinylidene fluoride (pvdf) cover assembly to at least one rigid surface of the apparatus assembly, with a resilient material between the pvdf cover assembly and the rigid surface. The pvdf assembly is composed of a pvdf foil with electrically conductive layers on opposite sides thereof.
05/14/15
20150128723

Ultrasonic transducer and ultrasonic flow meter including ultrasonic transducer


An ultrasonic transducer comprises a metal plate; an acoustic matching member fastened to one of surfaces of the metal plate, a piezoelectric substrate which is fastened to the other surface of the metal plate and generates a vibration; and an insulating damping member covering a surface of the piezoelectric substrate which surface is on an opposite side of a surface fastened to the metal plate; wherein a thickness of the insulating damping member is set to a length which is n/2 of a wavelength of the vibration propagating through the insulating damping member.. .
05/14/15
20150128687

Combustion pressure detection device, and internal combustion engine equipped with combustion pressure detection device


A combustion pressure detection device for detecting combustion pressure inside a combustion chamber of an internal combustion engine, the combustion pressure detection device being attachable to a communication hole communicating an inside of a cylinder head configuring the combustion chamber and an outside thereof, the combustion pressure detection device includes: a housing; and an piezoelectric element and the like that are located in the housing and detect the combustion pressure. The housing has an attachment structural part attachable to the communication hole, the attachment structural part has a third outer peripheral surface to which a first seal member is attachable, and a inclined surface to which a second seal member is attachable, and the inclined surface is arranged at a front end side in a direction to the combustion chamber relative to the third outer peripheral surface when the combustion pressure detection device is attached to the communication hole..
05/14/15
20150128682

Method of, and , measuring the true contents of a cylinder of gas under pressure


There is provided a sensor assembly (200) for measuring physical properties of a gas under pressure within a pressure vessel (100). The sensor assembly (200) comprises a housing and a piezoelectric oscillator (202) for immersion in the gas within the pressure vessel (100).
05/14/15
20150128495

Multifunctional planting system


A multifunctional planting system includes a supporter and a spraying device. The supporter includes a base and a plurality of lateral walls.
05/14/15
20150128405

Wire clamp with piezoelectric actuator and applying a preload force to the piezoelectric actuator


Disclosed is a wire clamp, comprising: a clamp body; a pair of arms coupled to the clamp body; and a piezoelectric actuator having a longitudinal axis extending between a first end and a second end, the actuator being coupled to the pair of arms at the first end and to the clamp body at the second end. The second end of the actuator is coupled to the clamp body by a preload mechanism for applying a preload force along the longitudinal axis, and the preload mechanism comprises at least one wedge having an inclined surface which is slidable over a mating inclined surface.
05/07/15
20150126889

Spirometer comprising piezoelectric sensor


The present invention is directed to a spirometer comprising a piezoelectric sensor and the use of the spirometer in measuring a user's lung performance and/or tracking a user's lung performance over a period of time. The spirometer is configured so that fluid flow through a housing produces oscillating stresses in a piezoelectric material.
South Jersey Engineering & Research, Llc
05/07/15
20150126112

Complex device and electronic device having the same


Provided are a complex device including a piezoelectric device, a wire patch cell (wpc) antenna disposed on one surface of the piezoelectric device, the wpc antenna being connected to two antenna patterns that are vertically spaced apart from each other, and a near field communication (nfc) antenna disposed outside the wpc antenna and an electronic device having the same.. .
Innochips Technology Co., Ltd.
05/07/15
20150125965

Biosensor utilizing a resonator having a functionalized surface


Systems and methods for detecting the presence of biomolecules in a sample using biosensors that incorporate resonators which have functionalized surfaces for reacting with target biomolecules. In one embodiment, a device includes a piezoelectric resonator having a functionalized surface configured to react with target molecules, thereby changing the mass and/or charge of the resonator which consequently changes the frequency response of the resonator.
Intel Corporation
05/07/15
20150125320

Plate type cooling apparatus


A plate type cooling apparatus is disclosed. The plate type cooling apparatus in accordance with an embodiment of the present invention includes: a first elastic plate made of an elastic material; a second elastic plate made of an elastic material and having one end thereof joined with the first elastic plate and the other end thereof separated from the first elastic plate; a piezoelectric element coupled with at least one of the first elastic plate and the second elastic plate and being deformable by applied electric power; and a power source coupled with the piezoelectric element so as to apply electric power to the piezoelectric element..
Samsung Electro-mechanics Co., Ltd.
05/07/15
20150125166

Developer container, developing apparatus, process cartridge and image forming apparatus


Provided is a technology that enhances the detection precision of the residual amount of a developer. An apparatus according to the invention includes: an accommodating portion in which a developer is accommodated; a sheet-like stirring member that, by rotating, stirs the developer accommodated in the accommodating portion; a piezoelectric element that is affixed to the stirring member and that outputs voltage when being deformed; and a deflection forming portion that comes in contact with the stirring member, thereby causing the stirring member to deflect, when a free end of the rotating stirring member is outside a developer accumulation region in the accommodating portion..
Canon Kabushiki Kaisha
05/07/15
20150124564

Ultrasonic sensor and device and measuring a distance between a vehicle and an obstacle


An ultrasonic sensor includes a housing having a peripheral side wall and a base surface, i.e., it is configured as essentially pot-shaped. The base surface is configured as a diaphragm.
Robert Bosch Gmbh
05/07/15
20150124558

Acoustic camera


Apparatus for generating accurate 3-dimensional images of objects immersed in liquids including optically opaque liquids which may also have significant sound attenuation, is described. Sound pulses are caused to impinge on the object, and the time-of-flight of the reflected sound is used to create a 3-dimensional image of the object in almost real-time.
Los Alamos National Security, Llc
05/07/15
20150124355

Recording head with piezoelectric contact sensor


Example embodiments include an apparatus that has a piezoelectric contact sensor. The piezoelectric contact sensor includes a semiconductor device having a semiconductor material that defines a channel through which current can flow.
Seagate Technology Llc
05/07/15
20150124263

Fabry-perot interferometer and a producing the same


The invention relates to a fabry-perot interferometer and a method for producing the same. More specifically, the invention relates to fabry-perot interferometers which are controllable with one or several actuators, such as piezoelectric, electrostrictive or flexoelectric actuators.
Teknologian Tutkimuskeskus Vtt
05/07/15
20150123931

Piezoelectric force sensing array


A touch sensing system may include a pressure and force sensing device capable of sensing dynamic pressure or dynamic force applied to a piezoelectric sensing array. In such implementations, an applied force may be detected (and optionally recorded) during a period of time that the force is applied and changing.
Qualcomm Incorporated
05/07/15
20150123746

Surface acoustic wave device and filter


A surface acoustic wave device includes: a pair of comb-like electrodes formed on a piezoelectric substrate, each of which includes electrode fingers, dummy electrode fingers and a bus bar to which the electrode fingers and the dummy electrode fingers are connected, the electrode fingers and the dummy electrode fingers of one of the pair of comb-like electrodes facing the dummy electrode fingers and the electrode fingers of the other com-like electrode, respectively; and additional films extending in the form of a strip in a first direction in which the electrode fingers are arranged side by side, each of the additional films covering at least parts of gaps defined by ends of the electrode fingers of one of the pair of comb-like electrodes and ends of the dummy electrode fingers of the other comb-like electrode.. .
Taiyo Yuden Co., Ltd.
05/07/15
20150122908

Multi-layer piezoelectric element and piezoelectric actuator, injection device and fuel injection system including the same


There are provided a multi-layer piezoelectric element capable of suppressing the development of a small crack occurring at an interface between a piezoelectric layer and an internal electrode layer or in the internal electrode layer, and a piezoelectric actuator, an injection device and a fuel injection system including the same. A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrode layers are laminated, and an external electrode disposed on a side surface of the stacked body and electrically connected to the internal electrode layers through a conductive bonding material, the external electrode including protrusions protruding toward the stacked body..
Kyocera Corporation
05/07/15
20150122906

Ultrasonic atomizing device and pest control method


Micropores penetrating a vibration plate 12 in a thickness direction thereof are formed, in which the vibration plate 12 atomizes a solution by vibration of a piezoelectric vibrator 11 that generates ultrasonic vibration when current is applied thereto. In addition, the spraying time and the spraying interval time are controlled by turning on or off the current applied to the piezoelectric vibrator 11, such that a value of [50% particle diameter of spray particles in cumulative volume distribution]×([spraying time]/[spraying interval time]) becomes 0.2 to 2.5 μm..
Sumitomo Chemical Company, Limited
05/07/15
20150122457

Synthetic jet actuator equipped with a piezoelectric actuator and a viscous seal


A method is provided for operating a thermal management system which includes providing a set of synthetic jet actuators a={a1, . .
f1x
05/07/15
20150122109

Stringless bowed musical instrument


Bowing platforms are disclosed for use in playing a bowed musical instrument without reliance on strings. A bowing platform includes a support and a track that replace the strings, bridge, and tailpiece on a conventional bowed instrument, to provide an alternative vibrational bowing surface.
05/07/15
20150122051

Flowmeter comprising piezoelectric sensor


The present invention is directed to a flowmeter comprising a piezoelectric sensor. The flowmeter is configured so that fluid flow through a channel, typically either a fluid conduit or a housing in which the sensor is oriented, produces oscillating stresses in a piezoelectric material.
South Jersey Engineering & Research, Llc
05/07/15
20150122036

Photoacoustic wave measurement device


A photoacoustic wave measurement device according to the present invention includes: an optical fiber that outputs pulsed light; an external spacer that is disposed between a pulsed-light output end of the optical fiber and a measurement object, and which is adapted to allow the pulsed light to pass therethrough; a piezoelectric element that receives a photoacoustic wave generated by the pulsed light from the measurement object and converts the photoacoustic wave into an electric signal; and a spacer that is disposed between the external spacer and the piezoelectric element, and which is adapted to allow the photoacoustic wave to pass therethrough. The piezoelectric element is farther from the measurement object than the pulsed-light output end.
Advantest Corporation


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Piezoelectric topics: Piezoelectric, Piezoresistive Material, Wave Device, Acoustic Wave, Electronic Device, Attenuation, Control Unit

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