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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


High frequency ultrasonic transducer and matching layer comprising cyanoacrylate

Fujifilm Sonosite

High frequency ultrasonic transducer and matching layer comprising cyanoacrylate

Robert Bosch

Sound transducer arrangement

Date/App# patent app List of recent Piezoelectric-related patents
04/23/15
20150112556
 Device for detecting mass particles and  control patent thumbnailnew patent Device for detecting mass particles and control
A device for detecting mass particles in air flows guided in a pipe, in particular of seeds to be distributed in a seed drill. A sensor element is disposed on the pipe.
Mueller-elektronik Gmbh & Co., Kg
04/23/15
20150112233
 Apparatus,  neurostimulation by high frequency ultrasound patent thumbnailnew patent Apparatus, neurostimulation by high frequency ultrasound
An apparatus, system, and method for neurostimulation by high frequency ultrasound. In one embodiment, an apparatus includes a pulse generator, an ultrasound transducer coupled to the pulse generator, and an implantable stimulator.
Arizona Board Of Regents On Behalf Of Arizona State University
04/23/15
20150111765
 Biocoated piezoelectric biosensor platform for point-of-care diagnostic use patent thumbnailnew patent Biocoated piezoelectric biosensor platform for point-of-care diagnostic use
Biosensor components (chips) are described based on direct biocoating processes that result in the tenacious and stable, noncovalent (believed to be chemisorptive) binding of anchor substances such as avidin(s) other proteins having specific binding partners or oligo- or poly-nucleotides onto any piezo-electrically active crystal surface. The resulting platform technology can be developed for a variety of biosensors with specific applications in biological assays.
Aviana Molecular Technologies, Llc.
04/23/15
20150111196
 Microfluidic chip patent thumbnailnew patent Microfluidic chip
A microfluidic chip orients and isolates components in a sample fluid mixture by two-step focusing, where sheath fluids compress the sample fluid mixture in a sample input channel in one direction, such that the sample fluid mixture becomes a narrower stream bounded by the sheath fluids, and by having the sheath fluids compress the sample fluid mixture in a second direction further downstream, such that the components are compressed and oriented in a selected direction to pass through an interrogation chamber in single file formation for identification and separation by various methods. The isolation mechanism utilizes external, stacked piezoelectric actuator assemblies disposed on a microfluidic chip holder, or piezoelectric actuator assemblies on-chip, so that the actuator assemblies are triggered by an electronic signal to actuate jet chambers on either side of the sample input channel, to jet selected components in the sample input channel into one of the output channels..
Premium Genetics (uk) Ltd.
04/23/15
20150110954
 Method of fabricating a card with piezo-powered indicator by printed electronics processes patent thumbnailnew patent Method of fabricating a card with piezo-powered indicator by printed electronics processes
An interactive card or the like employs a piezoelectric charge generator (piezo-strip) for temporarily driving an indicator. The piezo-strip may be displaced (bent) in order to generate charge to drive the indicator.
Palo Alto Research Center Incorporated
04/23/15
20150110301
 Throat microphone patent thumbnailnew patent Throat microphone
A throat microphone includes a cantilevered piezoelectric device 1 having a fixed end 11 supported by a base 3 and a free end with an anchor 4 fixed thereto. The piezoelectric device 1 vibrates to output audio signals in response to vibrations of a throat.
Kabushiki Kaisha Audio-technica
04/23/15
20150110283
 System for controlling fan noise patent thumbnailnew patent System for controlling fan noise
A system for controlling fan noise includes a fan, a sensor, a signal processing unit, a net structure, and a piezoelectric element. The fan has an airflow inlet and an airflow outlet.
Inventec (pudong) Technology Corporation
04/23/15
20150109375
 Liquid ejecting head and liquid ejecting apparatus patent thumbnailnew patent Liquid ejecting head and liquid ejecting apparatus
A liquid ejecting head includes a plurality of pressure generators each including a first electrode individually provided therefor, the first electrode being located on a face of the flow path plate so as to correspond to one of the pressure chambers, a piezoelectric layer provided on the first electrode, and a second electrode provided on the piezoelectric layer; a lead electrode electrically connected to the first electrode; and a conductive layer provided in a section where the first electrode is partially exposed, the section being located in a region where the second electrode is not provided and the piezoelectric layer is exposed, at least a part of the conductive layer being in contact with the first electrode. The lead electrode is connected to the first electrode via the conductive layer..
Seiko Epson Corporation
04/23/15
20150109374
 Liquid jet head, liquid jet apparatus, and  manufacturing liquid jet head patent thumbnailnew patent Liquid jet head, liquid jet apparatus, and manufacturing liquid jet head
A liquid jet head includes: a piezoelectric substrate which includes ejection grooves formed in an upper surface of the piezoelectric substrate and arranged in a reference direction, and a side flow path formed in a first side surface of the piezoelectric substrate and communicating with the plurality of ejection grooves; cover plate bonded to the upper surface; and a nozzle plate bonded to the first side surface and including nozzles communicating with the ejection grooves.. .
Sii Printek Inc.
04/23/15
20150109373
 Liquid jet head and liquid jet apparatus patent thumbnailnew patent Liquid jet head and liquid jet apparatus
A liquid jet head includes a first piezoelectric body substrate and an opaque substrate. The first piezoelectric body substrate includes n pieces of ejection grooves arrayed with an identical pitch in a reference direction on a surface, and (n+1) pieces of non-ejection grooves arrayed alternately with the ejection grooves while shifted therefrom by a half pitch.
Sii Printek Inc.
04/23/15
20150109372
new patent

Piezoelectric element, piezoelectric actuator, piezoelectric sensor, hard disk drive, and ink-jet printer device


The displacement as an actuator or the sensitivity as a sensor of a piezoelectric element can be increased and, in addition, the electric power consumption can be reduced by providing a thin film of potassium-sodium niobate, which is a perovskite type compound represented by a general formula abo3, as a piezoelectric layer, wherein a crystal orientation of a crystal structure of potassium-sodium niobate has in-plane fourfold symmetry as a whole piezoelectric layer, where a first axis of rotational symmetry is a thickness direction of the piezoelectric layer.. .
Tdk Corporation
04/23/15
20150109071
new patent

Elastic wave device


An elastic wave device includes a first elastic wave element, a second elastic wave element, and a first substrate. The first elastic wave element includes a first piezoelectric substrate.
Murata Manufacturing Co., Ltd.
04/23/15
20150108924
new patent

System for driving a piezoelectric load and making same


A system for driving a piezoelectric load includes a direct current (dc) voltage source and a bi-directional dc-to-dc converter having a primary side coupled to the dc voltage source and a secondary side and comprising a control input configured to receive a first control signal configured to control conversion of a first voltage on the primary side of the bi-directional dc-to-dc converter to a second voltage on the secondary side of the bi-directional dc-to-dc converter. The driver system also includes a capacitor coupled to the secondary side of the bi-directional dc-to-dc converter and configured to remove a dc offset of the second voltage and includes a reactive load having a first terminal coupled to the capacitor and a second terminal coupled to the secondary side of the bi-directional dc-to-dc converter..
General Electric Company
04/23/15
20150108923
new patent

Method for current-controlling at least one piezoelectric actuator of a fuel injector of an internal combustion engine


The step of applying the electrical polarization charge including a prior step of increasing the value of the charge current to a value greater than that of the nominal charge.. .
04/23/15
20150108875
new patent

Piezoelectric device


A piezoelectric device is provided with a rectangular crystal piece having driving electrodes on front and back main faces thereof, and a base member having two electrode pads near one short side of the crystal piece. The crystal piece is supported on the base member by two support portions near one short side thereof, and by an auxiliary support portion on the other short side thereof.
Daishinku Corporation
04/23/15
20150108874
new patent

High frequency ultrasonic transducer and matching layer comprising cyanoacrylate


In one aspect, matching layers for an ultrasonic transducer stack having a matching layer comprising a matrix material loaded with a plurality of micron-sized and nano-sized particles. In another aspect, the matrix material is loaded with a plurality of heavy and light particles.
Fujifilm Sonosite, Inc.
04/23/15
20150108873
new patent

Sound transducer arrangement


A sound transducer system is provided having a piezoelectrically active electret material between a first and a second electrode structure. The electret material is applied on the first electrode structure, so that the first electrode structure is completely covered with the electret material.
Robert Bosch Gmbh
04/23/15
20150108834
new patent

Electronic device with power generation means


An electronic device includes an auxiliary battery and an input device. The input device includes a pressing layer and a piezoelectric layer which is located below the pressing layer.
Hon Hai Precision Industry Co., Ltd.
04/23/15
20150108010
new patent

Method and device for measuring coagulation in a sample of a blood product


This invention relates to a method for measuring coagulation in a sample of a blood product comprising: providing a transducer (3) having a pyroelectric or piezoelectric element and electrodes (4, 5) which is capable of transducing energy generated by non-radiative decay into an electrical signal; contacting the transducer with the sample; irradiating the sample with a series of pulses of electromagnetic radiation from a light source (6); and detecting with a detector (7) the electrical signal generated by the transducer 3; wherein the sample contains particles (2), such as red blood cells (2), which are capable of absorbing the electromagnetic radiation generated by the radiation source (6) to generate energy by non-radiative decay, such as heat or shock waves, and wherein the wavelength of the electromagnetic radiation is such that the absorption of the radiation by particles (2) generates energy by non-radiative decay. A device (1) is also provided..
Vivacta Limited
04/23/15
20150107679
new patent

Method of, and , providing a gas mixture


There is provided a gas mixer arrangement comprising a first gas source for supplying a first gas; a second gas source for supplying a second gas different from said first gas; a first valve for regulating the flow of the first gas; a second valve for regulating the flow of the second gas; a mixer located downstream of the first and second valves and arranged, in use, to mix the first and second gases to provide a mixed gas; a meter arranged to measure the average molecular weight of the mixed gas, comprising a high-frequency planar piezoelectric crystal oscillator in contact with the mixed gas and a sensor operable to determine atmospheric pressure; and a controller operable, in response to the measured average molecular weight of said mixed gas, to control at least one of said first and second valves in order to control the relative proportion of the first and second gases in said mixed gas.. .
Air Products And Chemicals, Inc.
04/23/15
20150107369
new patent

Method of, and , measuring the mass flow rate of a gas


There is provided a meter for measuring the mass flow rate of a gas, the meter comprising a conduit through which the gas flows in use, the conduit having a flow restriction orifice through which choked flow occurs in use, the flow restriction orifice dividing the conduit into an upstream portion upstream of said orifice and a downstream portion downstream of said orifice, the meter further comprising a sensor assembly including a first piezoelectric crystal oscillator in said upstream portion such that said first piezoelectric oscillator is in contact with said gas when the meter in use, a second piezoelectric crystal oscillator in said downstream portion such that said second piezoelectric oscillator is in contact with said gas when the meter in use, said sensor assembly being arranged: to drive the first and second piezoelectric crystal oscillators such that each of the first and second piezoelectric crystal oscillators resonate at respective resonant frequencies; to measure the resonant frequency of the first piezoelectric oscillator and the resonant frequency of resonant frequency of the first piezoelectric oscillator and the the second piezoelectric oscillator; and to determine, from the resonant frequency of the second piezoelectric oscillator, the mass flow rate of gas through said orifice.. .
Air Products And Chemicals, Inc.
04/23/15
20150107363
new patent

Piezoelectric vibration sensor


A piezoelectric vibration sensor includes a piezoelectric element which is in a form of flat plate, an element holding plate which is in a form of flat plate, and first and second support members. An electrode is arranged on at least one plane of the piezoelectric element.
Nec Corporation
04/23/15
20150107359
new patent

Piezoresistance sensor module and mems sensor having the same


Disclosed herein is a piezoresistance sensor module including: a piezoresistor, a depletion layer formed in a region of a portion of the piezoresistor, an insulator formed to cover the depletion layer and one surface of the piezoresistor, and a piezoelectric capacitor formed on the insulator so as to be opposite to the depletion layer.. .
Samsung Electro-mechanics Co., Ltd.
04/23/15
20150107316
new patent

Contactless electronic access control system


An embodiment of an electronic access control system includes an electronic access apparatus, an electronic lock, and an access control administration program. The electronic access apparatus provides a wireless power signal and a wireless digital data signal to the electronic lock.
04/16/15
20150105716

Physical means and methods for inducing regenerative effects on living tissues and fluids


A system for the administration of modified plasma to a subject, including: (a) a non thermal plasma (ntp) emitting source for emitting a plasma beam; (b) a plasma coupling mechanism (pcm) with a plasma beam dish having at least one opening for the passage of the plasma beam; the plasma beam dish having a first surface and a second opposite surface. The first surface of the plasma beam dish includes: at least one coupling element selected from the group consisting of: (1) at least one ferroelectric element for providing the field; (2) at least one ferromagnetic element for providing the field; (3) at least one piezoelectric element for providing the field; and (4) at least one piezomagnetic element for providing the field.
Orteron (t.o) Ltd.
04/16/15
20150105663

Ultrasonic device, ultrasonic probe, ultrasonic diagnostic apparatus, and manufacturing ultrasonic device


An ultrasonic device includes a substrate, a first piezoelectric body, a second piezoelectric body, and an acoustic matching section. The substrate has a first surface that is a flat surface.
Seiko Epson Corporation
04/16/15
20150105294

Piezoelectric microcantilever sensors for biosensing


A piezoelectric microcantilever for sensing compounds or molecules. The piezoelectric microcantilever, may include at least one electrode, an insulation layer, a receptor, an immobilization layer, a non-piezoelectric layer and a piezoelectric layer the sensor is capable of self actuation and detection.
Drexel University
04/16/15
20150104295

Piezoelectric damper system for an axial turbomachine rotor


The present application relates to a rotor of a compressor or axial turbomachine comprising a vibration-damping system equipped with piezoelectric transducers distributed circularly and connected to dissipative resonant electric circuits. The circuits are closed and are equipped with a resistor and a coil.
Universite Libre De Bruxelles
04/16/15
20150104047

Electronic apparatus, storage medium and information notification method


When a driving module is performing processing of vibrating a piezoelectric vibration module based on a sound signal in an electronic apparatus, a determination module determines whether or not an ear putting position specified by an ear putting position specifying module is close to a reference position. When the processing is being performed, a notification module notifies the user at least one of that the ear putting position is appropriate and that the ear putting position is inappropriate, based on a determination result of the determination module..
Kyocera Corporation
04/16/15
20150103629

Correction of detecting depth and calculation of speed of moving objects based on time of flight of ultrasound pulses


During transmission, speed of ultrasound pulses gradually reduces due to their energy loss from acoustic impedance. So, calculating a detecting depth with fixed speed of the ultrasound pulses will distort ultrasound images.
04/16/15
20150103423

Drive device and imaging apparatus


There is provided a drive device including a movable body, and a fixing member that supports, with a drive shaft driven by a piezoelectric element expanded and contracted in response to an applied voltage and a sub shaft provided in parallel with the drive shaft, the movable body connected with the drive shaft movably in an axial direction. The movable body includes a rotation regulating member that supports the sub shaft and regulates rotation of the movable body with the drive shaft as a rotation center, and an impact dispersing part that disperses an impact on the piezoelectric element when inclined to the drive shaft..
Sony Corporation
04/16/15
20150103234

Drive controller, imaging apparatus and drive control method


There is provided a drive controller including a determination part that compares a target stop position of a movable body, which is driven by a piezoelectric actuator driven by a piezoelectric element expanded and contracted in response to an applied voltage, with a real position of the movable body acquired on the basis of a position sensor, and determines whether or not the target stop position matches with the real position, and a drive control part that turns off energization of the piezoelectric actuator when the target stop position matches with the real position while the movable body is being driven by the piezoelectric actuator.. .
Sony Corporation
04/16/15
20150102708

Piezoelectric device and fabricating the same


There is provided a piezoelectric device including: a body portion having a plurality of piezoelectric layers stacked therein; and internal electrodes disposed in the body portion with at least one of the plurality of piezoelectric layers interposed therebetween and including a shrinkage inhibitor having at least one of a flake shape and a plate shape, wherein an angle formed by an interface between the internal electrode and the piezoelectric layer on which the internal electrode and the piezoelectric layer are in contact and a long side direction of the shrinkage inhibitor is 15° or less.. .
Samsung Electro-mechanics Co., Ltd.
04/16/15
20150102707

Composite substrate


A composite substrate 10 includes a supporting substrate 12 and a piezoelectric substrate 14 which are bonded to each other. In this embodiment, the supporting substrate 12 and the piezoelectric substrate 14 are bonded to each other by an adhesive layer 16.
Ngk Insulators, Ltd.
04/16/15
20150102706

Piezoelectric element and vibrator including the same


There is provided a piezoelectric element including: a piezoelectric body including positive electrode layers and negative electrode layers alternately stacked on element layers; a polymer layer stacked on at least one surface of the piezoelectric body; a first external electrode stacked so as to contact the polymer layer; and a second external electrode disposed to be spaced apart from the first external electrode and stacked so as to contact the polymer layer.. .
Samsung Electro-mechanics Co., Ltd.
04/16/15
20150102705

Elastic wave device


An elastic wave device includes a high acoustic velocity film configured such that a bulk wave propagates at a higher acoustic velocity than an elastic wave that propagates in a piezoelectric film, a low acoustic velocity film configured such that a bulk wave propagates at a lower acoustic velocity than a bulk wave that propagates in the piezoelectric film is laminated on the high acoustic velocity film, the piezoelectric film is laminated on the low acoustic velocity film, and an idt electrode is laminated on one surface of the piezoelectric film. In an upper structure section, an energy concentration ratio of a main mode which is an elastic wave is not less than about 99.9% and an energy concentration ratio of a high order mode which is spurious is not more than about 99.5%..
Murata Manufacturing Co., Ltd.
04/16/15
20150102704

Super-piezoelectric composite fiber mats for power generation and soft actuators


A piezoelectric device includes a fiber mat comprising polymer fibers with ferroelectric particles embedded in the polymer fibers. The ferroelectric particles are oriented to generate a net polarization in the fiber mat.
Kent State University
04/16/15
20150102253

Piezoelectric materials for low sintering


The present invention relates to a piezoelectric material for low sintering and more particularly, to piezoelectric materials for low sintering having a composition formula of pb(zr, ti)o3—pb(ni, nb)o3 (hereinafter referring to as ‘pzt-pnn’). The pzt-pnn piezoelectric material according to the present invention shows excellent piezoelectric properties compared to the convention piezoelectric materials even at a low sintering temperature of 950° c.
Samsung Electro-mechanics Co., Ltd.
04/16/15
20150102241

Valve for metering in a flowing medium


A valve for metering a flowing medium, in particular a fluid, having a metering opening situated in the fluid flow and surrounded by a valve seat, a valve needle that controls the metering opening and that has a closing head that works together with the valve seat to close and release the metering opening, a piezoelectric actuator that acts on the valve needle to release the metering opening, and an elastic resetting element that acts on the valve needle to close the metering opening. To minimize the required stroke of the piezoelectric actuator for a required stroke of the closing head of the valve needle, the point of action of the resetting element on the valve needle is situated on or close to the end of the valve needle that bears the closing head..
Robert Bosch Gmbh
04/16/15
20150102124

Nozzle replaceable atomizer with automatic abnormality detecting function


A nozzle replaceable atomizer with automatic abnormality detecting function is provided. In the atomizer, when a detachable spray head is assembled to a main machine, a microcomputer serves to automatically set a piezoelectric element at an optimal operating frequency.
04/16/15
20150101731

Method and electrical gap setting for a piezoelectric pressure sensor


A method for electrically setting a gap for a piezoelectric pressure sensor. The method includes positioning a piezoelectric flex element on a tray; attaching a voltage source to the piezoelectric flex element of a piezoelectric pressure sensor; applying a voltage from the voltage source to the piezoelectric flex element; curing an adhesive between the piezoelectric flex element and the tray while the piezoelectric flex element is deflected by the voltage; and stopping the voltage from the voltage source to the piezoelectric flex element when the adhesive has been cured..
Sercel Inc.
04/16/15
20150101323

Using gravity and piezoelectric elements to produce electric power


A hydroelectric power plant comprising a pipe from a water source in a mountain range which is made to open into a much larger in diameter piston cylinder at a much lower elevation. The piston therein is driven by water pressure to drive a gear train operatively connected to an electric generator on its far end.
04/09/15
20150099085

Piezoelectric ceramic composition


This invention provides for a piezoelectric ceramic composition having a lead-free alkaline niobate piezoelectric ceramic composition with a favorable piezoelectric property. This invention refers to a piezoelectric ceramic composition 10 that is described as composition formula {lix(k1-ynay)1-x}(nb1-zsbz)o3 including the additives of the metallic elements bi and fe within the range of the following relational expressions: 0.03≦x≦0.045; 0.5≦y≦0.58; 0.03≦z≦0.045; and 0.006≦v≦w≦0.010 whereof v is the additive amount of bi (molar ratio), and w is the additive amount of fe (molar ratio)..
Honda Electronics Co., Ltd.
04/09/15
20150098594

Speaker


A plurality of magnetostrictive elements made of ferrite or the like are arranged in a matrix on an upper surface of a circuit board. On the periphery of each of the magnetostrictive elements, a voice coil is arranged.
Nec Casio Mobile Communications, Ltd.
04/09/15
20150098593

Sound receiver and manufacturing the same


A sound receiver includes a casing, a circuit portion, a conductive member, a first piezoelectric plate, a second piezoelectric plate, a first conductive transmission portion, and a second conductive transmission portion. The casing has an accommodating portion.
04/09/15
20150098028

Printing apparatus, ink jet head, and printing method


There is provided a printing apparatus which performs printing by an ink jet method, including: an ink jet head which ejects ink droplets; and a driving signal output portion which outputs a driving signal that causes the ink droplets to be ejected from the ink jet head. The ink jet head includes: a nozzle which ejects the ink droplets; an ink chamber which stores ink to be ejected from the nozzle; and a piezoelectric element which causes the ink droplets to be ejected from the nozzle.
Mimaki Engineering Co., Ltd.
04/09/15
20150097898

Piezoelectric element, liquid droplet discharging head, liquid droplet discharging device, image forming apparatus, and manufacturing piezoelectric element


A piezoelectric element includes a vibration plate; a lower electrode; a piezoelectric film; and an upper electrode, which are laminated in the stated order. An electric field is applied to the piezoelectric film by the lower electrode and the upper electrode.
04/09/15
20150097897

Multi-layer electroformed nozzle plate with attenuation pockets


An ink jet printhead includes a nozzle plate including a nozzle, a recess in the nozzle plate, and a compliant layer that covers the recess and forms a sealed pocket that may be filled with air or another gas during use of the printhead. During actuation of a piezoelectric element during the ejection of ink from the nozzle, the sealed pocket attenuates an acoustic energy generated by the piezoelectric element, thereby reducing crosstalk to adjacent nozzles by the acoustic energy..
Xerox Corporation
04/09/15
20150097885

Printing apparatus and controlling printing apparatus


A printing apparatus includes a driving signal generation unit that generates a driving signal; a piezoelectric element that displaces according to the signal; a cavity whose inside is filled with an ink and in which a pressure in the inside is increased or decreased due to the displacement of the piezoelectric element based on the signal; an ejection unit that includes a nozzle communicating with the cavity and capable of ejecting the ink filled in the inside of the cavity by the increase or the decrease of the pressure in the inside of the cavity; a residual vibration detection unit that detects a change of an electromotive force based on the change of the pressure in the inside of the cavity; and an ejection state determination unit that determines an ejection state of the ink in the ejection unit based on the detection result of the residual vibration detection unit.. .
Seiko Epson Corporation
04/09/15
20150097635

Piezoelectric multiplexer


A piezoelectric multiplexer includes an actuator and multiple piezo-morph beams. The actuator includes an actuator conducting head and an actuator stem, and each piezo-morph beam includes a conducting beam contact head and a beam stem manufactured out of piezo-morph material.
19th Space Electronics
04/09/15
20150097515

Self-powered irrigation apparatus


An irrigation apparatus is provided, comprising: a pressure vessel configured to hold water under pressure, and configured to expand and contract based on the pressure of the held water; a selectable throttle configured to receive water at a first pressure, configured to provide the water to the pressure vessel at the first pressure when the selectable throttle is at a first setting, and configured to provide the water to the pressure vessel at a second pressure that is smaller than the first pressure when the selectable throttle is at a second setting; a control circuit configured to control whether the selectable throttle is at the first setting or at the second setting; and a piezoelectric element attached to the pressure vessel and configured to generate electricity when the pressure vessel expands or contracts.. .
Signature Control Systems, Inc.
04/09/15
20150097468

Piezoelectric ultrasonic transducer array with switched operational modes


Switchable micromachined transducer arrays are described where one or more switches, or relays, are monolithically integrated with transducer elements in a piezoelectric micromachined transducer array (pmut). In embodiments, a mems switch is implemented on the same substrate as the transducer array for switching operational modes of the transducer array.
04/09/15
20150097306

Valve device for controlled introduction of a blowing medium


A valve device for controlled introduction of a blowing medium into plastic parisons, includes at least one controllable valve body, at least one actuating device, and a control device for controlling the actuating device. The actuating device is at least indirectly operatively connected to the valve body, and includes at least one piezoelectric actuator, wherein by actuation of the actuating device and control of the piezoelectric actuator, which is associated therewith, by the control device in dependence on the current impressed into the piezoelectric actuator and/or the voltage applied thereto, the valve body can be moved from an open position into a closed position and vice versa, and in the closed position a main flow path for introduction of the blowing medium into the plastic parisons is closed..
Krones Ag
04/09/15
20150097129

Proportional valve controlled with a piezoelectric linear actuator


The present invention relates to valves and/or fluid pumps and in particular to such valves and/or fluid pumps controlled with gating and/or control module comprising a piezoelectric linear actuator to provide gating of the valve and/or pump system.. .
Ipu Industries Ltd.
04/09/15
20150097047

Method for controlling and managing smart atomizer


A method for controlling and managing a smart atomizer involves automatically frequency tracing to rapidly optimize an operating frequency of a piezoelectric element of a spray nozzle when the spray nozzle is assembled to a main machine of the smart atomizer. The main machine performs spray-dosage setting, so that each spray session can operate according a preset spray dosage, so as to provide consistent spray of liquid easily.
04/09/15
20150096878

Touch-sensitive sensor and producing such a sensor


This touch-sensitive sensor includes a layer of piezoelectric material interposed between, on the one hand, first and second electrically-conductive elements and, on the other hand, at least one third conductive element including a surface opposite at least one of the first and second conductors.. .
Commissariat A L'energie Atomique Aux Energies Alternatives
04/09/15
20150096539

Method for controlling at least one piezoelectric actuator of a fuel injector of an internal combustion engine


The method applied from an on-board engine control unit during operation, and including applying to the actuator between these 2 steps at least one second electric charge to polarize the actuator during an opening phase of the injector and during fuel injection.. .
04/09/15
20150096385

Method of, and , measuring the physical properties of two-phase fluids


There is provided a method of measuring the physical properties of a two-phase fluid using at least one piezoelectric oscillator immersed in the two-phase fluid, the two-phase fluid comprising a gas fraction and a liquid fraction, the method comprising: a) measuring the resonant frequency of the or each piezoelectric oscillator as a function of time; and b) determining, from the or each resonant frequency, at least one physical property of the two-phase fluid to characterise the two-phase fluid.. .
Air Products And Chemicals, Inc.
04/02/15
20150094602

Blood pressure measurement device and control blood pressure measurement device


A control amplitude and a control frequency of a voltage applied to a piezoelectric pump are determined, control is carried out so that a voltage at the determined control amplitude and control frequency is applied to the piezoelectric pump, and a blood pressure value is calculated based on a cuff pressure detected by a pressure detection unit during inflation when the cuff pressure is increased by the piezoelectric pump. The amplitude of the voltage is controlled in predetermined steps, and a voltage having an amplitude that is a value above the control amplitude by at least one step and a voltage having an amplitude that is a value below the control amplitude by at least one step are applied, in a predetermined order, so that the control is the same or essentially the same as when a voltage at the determined control amplitude is applied..
Omron Healthcare Co., Ltd.
04/02/15
20150093841

Process for production of functional device, process for production of ferroelectric material layer, process for production of field effect transistor, thin film transistor, field effect transistor, and piezoelectric ink jet head


A method of producing a functional device according to the present invention includes, in this order: the functional solid material precursor layer formation step of applying a functional liquid material onto a base material to form a precursor layer of a functional solid material; the drying step of heating the precursor layer to a first temperature in a range from 80° c. To 250° c.
Japan Science And Technology Agency
04/02/15
20150092963

Piezoelectric loudspeaker


The present invention discloses a piezoelectric loudspeaker. The piezoelectric loudspeaker comprises a sound producing plate, a resonant sound-box, a surround and a reflective sound-box.
Miezo Inc.
04/02/15
20150092514

Ultrasonic device, probe, electronic device, and ultrasonic imaging apparatus


An ultrasonic device includes a base in which a base layer of a vibrating film is formed in every opening that is disposed in an array; an interconnect layer, which is a conductor, formed on the base layer; an insulating film that is formed on the interconnect layer, and forms a laminated structure with respect to the base layer; a plurality of piezoelectric elements that are separated from the interconnect layer by the insulating film, the piezoelectric elements each including a first electrode and a second electrode that sandwich a piezoelectric film on the insulating film; and a through conductor that passes through the insulating film, and connects at least one of the first electrode and the second electrode to the conductor constituting the interconnect layer.. .
Seiko Epson Corporation
04/02/15
20150091983

Liquid droplet jetting manufacturing liquid droplet jetting apparatus


A liquid droplet jetting apparatus includes: a nozzle plate formed with a nozzle; a first flow passage formation body stacked on the nozzle plate and formed with a liquid flow passage including a pressure chamber in communication with the nozzle; a piezoelectric element arranged on a surface of the first flow passage formation body on the side opposite to the nozzle plate and configured to apply a pressure to a liquid in the pressure chamber; and a second flow passage formation body arranged on the side opposite to the nozzle plate with respect to the first flow passage formation body so as not to hinder driving of the piezoelectric element. The second flow passage formation body is formed with a liquid storing chamber and a throttle flow passage configured to restrict an amount of the liquid flowing from the liquid storing chamber into the pressure chamber..
Brother Kogyo Kabushiki Kaisha
04/02/15
20150091962

Liquid discharge apparatus and liquid discharge method


A liquid discharge apparatus is provided, comprising a channel structure; a piezoelectric actuator which has a plurality of individual electrodes, a common electrode, and a piezoelectric layer sandwiched between the individual electrodes and the common electrode; and a driving device which drives the piezoelectric actuator. The driving device outputs an individual driving signal which causes a change of an electric potential of the individual electrode, to the individual electrode corresponding to the nozzle for discharging the liquid.
Brother Kogyo Kabushiki Kaisha
04/02/15
20150091961

Liquid ejecting device, head unit, and liquid ejecting method


A liquid ejecting device includes: a piezoelectric element that is deformed by applying at least one drive waveform among a plurality of drive waveforms to the piezoelectric element, the plurality of drive waveforms including a first drive waveform and a second drive waveform; a cavity that is filled with a liquid and is increased or decreased in internal pressure due to deformation of the piezoelectric element; a nozzle that communicates with the cavity, and ejects the liquid as a liquid droplet; and a selection section that selects at least one drive waveform from the plurality of drive waveforms, the liquid droplet including a first liquid droplet ejected when the first drive waveform has been selected, and a second liquid droplet ejected when the second drive waveform has been selected, an ejection volume of the first liquid droplet being almost equal to an ejection volume of the second liquid droplet.. .
Dainippon Screen Mfg. Co., Ltd.
04/02/15
20150091960

Liquid discharging apparatus


An ink jet printer is provided with a driving signal generating section which generates a driving signal for driving a piezoelectric element, a residual vibration detecting section, a control ic which includes the residual vibration detecting section, and a connection terminal which connects the piezoelectric element, an input terminal to which the driving signal is supplied and an output terminal from which an output signal of the residual vibration detecting section is supplied, a first external wiring which is connected to the input terminal and through which the driving signal is supplied, and a second external wiring which is connected to the output terminal and through which the output signal of the residual vibration detecting section is supplied. A resistance value per unit length of the second external wiring is larger than a resistance value per unit length of the first external wiring..
Seiko Epson Corporation
04/02/15
20150091528

Auxiliary device having energy harvester and electronic device including auxiliary device


An auxiliary device including an energy harvester and an electronic device including the auxiliary device are provided. The auxiliary device includes: a housing; a storage module which is moveable within the housing; and at least one piezoelectric transducer which disposed in the housing, such that a motion of the storage module causes a deformation of the piezoelectric transducer, thus generating electric energy.
Samsung Electronics Co., Ltd.
04/02/15
20150091417

Piezoelectric ceramics, piezoelectric ceramic compositions, and piezoelectric elements


A piezoelectric ceramic contains as a main component an oxide which is represented by the general formula: sa1b1o3-t(bi.a2)tio3-(1-s-t)bamo3 (where a1 is at least one element selected from among alkali metals; b1 is at least one element selected from among transition metal elements and contains nb; a2 is at least one element selected from among alkali metals; and m is at least one element selected from the 4a group and contains zr). In the general formula, s and t satisfy 0.905≦s≦0.918, 0.005≦t≦0.02, and a piezoelectric constant d33(25) at 25° c.
Toyama Prefecture
04/02/15
20150091416

Composite substrate, piezoelectric device, and manufacturing composite substrate


A composite substrate 10 includes a piezoelectric substrate 12 and a support layer 14 bonded to the piezoelectric substrate 12. The support layer 14 is made of a material having no crystalline anisotropy in a bonded surface thereof and has a smaller thickness than the piezoelectric substrate 12.
Ngk Insulators, Ltd.
04/02/15
20150091415

Autonomous intracorporeal capsule with energy harvesting by piezoelectric transducer


An autonomous intracorporeal capsule comprises a body containing electronic circuits and an energy harvesting module. The energy harvesting module comprises a moveable surface on the body of the capsule, subjected to pressure variations and to produce a mechanical stress under the effect of the pressure variations, and a transducer comprising a deformable piezoelectric component configured as a beam adapted to be forced to bend.
Sorin Crm Sas
04/02/15
20150091414

Piezoelectric device and an apparatus


A piezoelectric device comprises at least one element comprising at least one sheet of piezoelectric material. The element is mounted on a circuit board comprising at least one conductive layer having at least one opening.
Aito B.v.


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

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