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Piezo patents



      

This page is updated frequently with new Piezo-related patent applications.




Date/App# patent app List of recent Piezo-related patents
04/07/16
20160100262 
 Acoustic reproduction device and sound-collecting acoustic reproduction device patent thumbnailAcoustic reproduction device and sound-collecting acoustic reproduction device
This acoustic reproduction device can suppress a loss in sense of volume and sense of comfort. The acoustic reproduction device causes a user to hear sound and is provided with a vibration unit (10), which includes a piezoelectric element (101) that flexes and a panel (102) that vibrates by being bent directly by the piezoelectric element (101), and with a holder (60), which holds the vibration unit (10) at a position where the vibration unit (10) contacts the user's ear..
Kyocera Corporation


04/07/16
20160100255 
 Electronic apparatus patent thumbnailElectronic apparatus
An electronic apparatus comprises a cover panel, a piezoelectric vibration element located on a rear surface being opposite to an exposed surface of the cover panel, and a drive module driving the piezoelectric vibration element based on a sound signal. The rear surface comprises a first region where the piezoelectric vibration element is disposed.
Kyocera Corporation


04/07/16
20160099705 
 Acoustic wave device patent thumbnailAcoustic wave device
An acoustic wave device includes: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode facing each other across at least a part of the piezoelectric film; a silicon oxide film located at an opposite side of at least one of the lower electrode and the upper electrode from the piezoelectric film; a non-oxygen-containing insulating film located between the at least one of the lower electrode and the upper electrode and the silicon oxide film; and an additional film located at an opposite side of the silicon oxide film from the non-oxygen-containing insulating film and made of a material different from a material of the silicon oxide film.. .
Taiyo Yuden Co., Ltd.


04/07/16
20160099701 
 Nano- and micro-electromechanical resonators patent thumbnailNano- and micro-electromechanical resonators
A resonator includes a piezoelectric plate and interdigitated electrode(s). The interdigitated electrode includes a plurality of conductive strips disposed over a top surface of the piezoelectric plate.
Northeastern University


04/07/16
20160099570 
 Compact omnidirectional modular power harvesting system patent thumbnailCompact omnidirectional modular power harvesting system
The present invention relates to a compact omnidirectional energy harvesting system consisting of a semi-spherical (geodesic dome) shaped photovoltaic collector- and vertical-axis wind turbine, equipped with a power management system to convert, optimize and store the resulting solar, wind and auxiliary energy into electrical energy. The present invention has auxiliary energy capture ports to harvest ambient energies such as thermoelectric, piezoelectric, electromechanical, hydroelectric, rectifying antenna, electrostatic and electrochemical through plug-in modules.

04/07/16
20160099463 
 Composite negative active material and  preparing the same, negative electrode including composite negative active material, and lithium secondary battery including negative electrode patent thumbnailComposite negative active material and preparing the same, negative electrode including composite negative active material, and lithium secondary battery including negative electrode
A composite negative active material including a piezoelectric material; and a negative active material. Also a negative electrode including the composite negative active material, and a lithium secondary battery including the negative electrode..
Samsung Sdi Co., Ltd.


04/07/16
20160099402 
 Electromechanical conversion element, liquid drop discharge head and image forming apparatus patent thumbnailElectromechanical conversion element, liquid drop discharge head and image forming apparatus
An electromechanical conversion element includes a lower electrode formed directly or indirectly on a substrate or a base film; an electromechanical conversion film formed on the lower electrode and including a piezoelectric body having a perovskite crystal structure preferentially oriented with a {n00} plane where n is a positive integer; and an upper electrode formed on the electromechanical conversion film. A diffraction peak at a position 2θ at which a diffraction intensity has a maximum value and which corresponds to a (x00) plane or a (00x) plane, x being 1 or 2, obtained by θ-2θ measurement in x-ray diffraction measurement, shows a trapezoidal peak shape and has two or more bending points..
Ricoh Company, Ltd.


04/07/16
20160099400 
 Ceramic device and piezoelectric device patent thumbnailCeramic device and piezoelectric device
A piezoelectric device is a fired body including a body part 10 and external electrodes 21 and 22. A surface of the side electrode 22 is comprised only of a material for the side electrode 22.
Ngk Insulators, Ltd.


04/07/16
20160097696 
 Piezoelectric vibration sensor for fluid leak detection patent thumbnailPiezoelectric vibration sensor for fluid leak detection
A vibration sensor includes at least one piezoelectric crystal having an upper surface and a lower surface; a base having an attachment section defining an attachment surface and an at least one calibration mass; wherein a one of the at least one piezoelectric crystal upper surface and lower surface attaches to the attachment surface of the base; and wherein the at least one calibration mass is external to the piezoelectric crystal.. .
Mueller International, Llc


04/07/16
20160097674 
 Piezoelectric vibration sensor for monitoring machinery patent thumbnailPiezoelectric vibration sensor for monitoring machinery
A vibration sensor includes a piezoelectric crystal; and a base having an upper surface and a lower surface, the piezoelectric crystal attached to the upper surface of the base, the base defining a notch in at least one of the upper surface and the lower surface. Another embodiment of a vibration sensor includes a first piezoelectric crystal; a second piezoelectric crystal; a base attached to the first piezoelectric crystal on first side of the base and attached to the second piezoelectric crystal on a second side of the base opposite the first side of the base; a voltage amplifier in electrical communication to the first piezoelectric crystal; and a charge amplifier in electrical communication to the second piezoelectric crystal..
Vicont, Inc.


04/07/16
20160097436 

Vibration isolation systems including multi-parameter isolators providing piezoelectric-based damping


Embodiments of a vibration isolation system are provided. In one embodiment, the vibration isolation system includes a first isolator having opposing mounting interfaces, a tuning spring disposed between the opposing mounting interfaces, and a piezoelectric actuator disposed between the opposing mounting interfaces and coupled in series with the tuning spring, as taken along a first load path through the first isolator.
Honeywell International Inc.


04/07/16
20160096369 

Liquid-ejection head and image forming apparatus


A disclosed liquid-ejection head for ejecting liquid droplets includes a substrate having a diaphragm forming a part of walls of a pressure liquid chamber, and a piezoelectric element adhered to the substrate with adhesive, and configured to apply pressure to the pressure liquid chamber via the diaphragm. The piezoelectric element has a surface facing the substrate having the diaphragm, and the surface has one or more projection parts in an area in which the pressure liquid chamber is not disposed, and whereon the substrate having the diaphragm has one or more recess parts that fit in the respective projection parts..
Ricoh Company, Ltd.


04/07/16
20160096368 

Liquid ejecting head, liquid ejecting apparatus, and piezoelectric device


A liquid ejecting head includes a flow channel forming substrate that is provided with a space constituting a pressure generating chamber which communicates with nozzle openings, a vibration plate that is stacked on one surface of the flow channel forming substrate and seals the space, and a piezoelectric element that includes a first electrode, a piezoelectric layer, and a second electrode sequentially stacked on a surface of the vibration plate opposite to the flow channel forming substrate, in which the first electrode is formed, in which at least a width of a first direction along the opposite surface is narrower than the space in a region corresponding to the space, the piezoelectric layer is stacked so as to overlap the first electrode and at least a part of the vibration plate in the region corresponding to the space, the second electrode is stacked so as to overlap the piezoelectric layer in the region corresponding to the space, and as a thickness of a stacked direction of the piezoelectric element is a thickness of the piezoelectric layer, a first thickness (d1) of the piezoelectric layer of a part positioned on the first electrode and a second thickness (d2) of the piezoelectric layer of a part positioned on the vibration plate satisfy a relationship of the first thickness (d1)>the second thickness (d2).. .
Seiko Epson Corporation


04/07/16
20160096198 

Vibration generating device


There is provided a vibration generating device including: a housing having an internal space; a vibration member having one end fixedly attached to the housing; a piezoelectric element installed on the vibration member; and a mass body fixedly attached to the vibration member, wherein the vibration member includes an installation part on which the piezoelectric element is installed, and an extension part extended from at least one side surface of the installation part, and a maximum displacement portion of the vibration member is changed depending on a vibration mode.. .
Samsung Electro-mechanics Co., Ltd.


04/07/16
20160096155 

Apparatus for supporting a semiconductor wafer and vibrating a semiconductor wafer


In embodiments of the present disclosure, a vibrator is used to generate a vibration wave with a variable frequency that can agitate and facilitate the circulation of the processing fluids, thereby enhancing the uniformity and efficiency of the resulting semiconductor device features, the vibrator may be a piezoelectric vibrator or other similar vibrators. In some embodiments, the vibration of the processing fluids can facilitate the processing fluids in circulating in and out of narrow channels or features, or the vibration of the processing fluids can facilitate the bubbling out of the microbubbles entrapped in the processing liquid or entrapped between the surface of the semiconductor wafer and the processing liquid.
Taiwan Semiconductor Manufacturing Co., Ltd.


04/07/16
20160095965 

Instructional medical treatment system


The present invention discloses an appliance for administering medical treatment to a person, as well as methods of using the appliance. In various embodiments, the appliance may be comprised of a medical device, an electronic processor, an electronic display (such as a liquid crystal display (lcd)), an audio output device (such as a piezoelectric speaker/microphone), electronic controls for controlling the operation of the electronic processor, and an electronic input receptacle (such as a dvd drive or usb port) adapted to receive and electronically access an electronic storage device (such as a dvd or flash memory device).
Bluesky Medical Group, Inc.


04/07/16
20160095582 

Ultrasonic diagnostic apparatus


In general, according to one embodiment, an ultrasonic diagnostic apparatus includes an ultrasonic probe, a plurality of power supplies implemented by circuitry, at least one pulser, and a controller implemented by circuitry. The ultrasonic probe includes a plurality of piezoelectric transducers which generate ultrasonic waves in response to supplied driving signals.
Toshiba Medical Systems Corporation


03/31/16
20160095255 

Thermal piezoelectric apparatus


An integrated thermal apparatus includes a piezoelectric device and a thermal module which includes a thermal plate contacting a heat source to remove heat from the heat source. The thermal plate has built-in heat sinks for maximizing the surface area for heat dissipation.
Ice Computer, Inc.


03/31/16
20160094198 

Filter device and duplexer


In a filter device, first and second filter sections are connected in parallel between an input terminal and an output terminal. The first filter section is a longitudinally coupled resonator-type elastic wave filter including first and second inter-stage wiring lines with a two-stage cascading connection.
Murata Manufacturing Co., Ltd.


03/31/16
20160094197 

Piezoelectric vibration piece and piezoelectric vibrator


A piezoelectric vibration piece includes: a base portion; a pair of vibration arm portions which extends in a first (+y) direction from the base portion, and is arranged separately in a second (x) direction intersecting with the first (+y) direction; and a support arm portion which extends in the first (+y) direction from the base portion. The support arm portion, includes a first arm portion formed such that a width which is a length along the second (x) direction is gradually narrowed towards a tip end portion side of the support arm portion, and a second arm portion which extends in the first (+y) direction from the first arm portion and is formed such that the width is broadened towards the tip end portion side..
Sii Crystal Technology Inc.


03/31/16
20160093794 

Piezoelectric actuator and manufacturing piezoelectric actuator


A piezoelectric actuator includes a substrate, a first electrode arranged on the substrate, a piezoelectric body stacked on the first electrode, a second electrode superimposed on a surface of the piezoelectric body on a side opposite to the first electrode, and a wiring connected to the first electrode. The first electrode has a connecting portion which is arranged to protrude from an end portion of the piezoelectric body and to which the wiring is connected, and a first conductive portion is provided so that the first conductive portion overlaps with the first electrode while extending over from an area overlapped with the end portion of the piezoelectric body up to the connecting portion of the first electrode..
Brother Kogyo Kabushiki Kaisha


03/31/16
20160093793 

Piezoelectric composition, piezoelectric element and sputtering target


The present invention aims to provide a piezoelectric composition containing a composition represented by formula (5) as the main component, wherein the composition represented by formula (5) contains a first perovskite-type oxide represented by formula (1), a second perovskite-type oxide represented by formula (2), a tungsten bronze-type oxide represented by formula (3) and a third perovskite-type oxide represented by formula (4), (k1-x-ynaxliy)q(nb1-ztaz)o3 (1), srzro3 (2), ba(nb1-wtaw)2o6 (3), (bi0.5na0.5)tio3 and/or (bi0.5k0.5)tio3 (4), (1-m-n-p)a+mb+nc+pd (5); in formula (1), 0.20≦x≦0.80, 0.02≦0.10, 0.01≦z≦0.30 and 0.800≦q≦1.050; in formula (3), 0.01≦w≦0.30; and in formula (5), a represents the composite oxide represented by formula (1), b represents the composite oxide represented by formula (2), c represents the composite oxide represented by formula (3), d represents the composite oxide represented by formula (4), and 0.04≦m≦0.07, 0≦n≦0.010 and 0.001≦p≦0.020.. .
Tdk Corporation


03/31/16
20160093792 

Thin-film piezoelectric material element, manufacturing the same, head gimbal assembly, hard disk drive, ink jet head, variable focus lens and sensor


A thin-film piezoelectric material element includes a lower electrode film, a piezoelectric material film, and an upper electrode film, the lower electrode film, the piezoelectric material film and the upper electrode film are laminated sequentially. An upper surface of the piezoelectric material film is a concavity and convexity surface having a convex part and a concave part, the convex part is a curved surface convexly projected, and the concave part is a curved surface concavely hollowed, the upper electrode film is formed on the concavity and convexity surface.
Sae Magnetics (h.k.) Ltd.


03/31/16
20160092016 

Pressure detecting device and touch panel


The invention provides a pressure detecting device containing a pressurized member having a contact surface that is subjected to pressure due to contact with a pressurizing means; and a piezoelectric member that is arranged facing the pressurized member and that includes a polymeric piezoelectric material having a piezoelectric constant d14 of 1 pm/v or more as measured by a displacement method at 25° c., and a ratio ieb/iea between a product ieb of a cross-sectional secondary moment ib and a young's modulus eb of the pressurized member, and a product iea of a cross-sectional secondary moment ia and a young's modulus ea of the piezoelectric member, is in a range of from 102 to 1010.. .
Mitsui Chemicals, Inc.


03/31/16
20160091285 

Portable, wireless electronic target devices, systems and methods


Disclosed are targets devices and method of using the target devices for electronically determining the location of projectile impacts on the surface of a target. The impact location is determined in a number of ways, including by use of a plurality of accelerometers or piezo-vibration sensors to determine the impact area and transmit data relating to the impact to a remote receiver for real-time presentation to the shooter.
Mason Target Systems, Llc


03/31/16
20160091284 

Electro control hazing device (echd)


An electronic conditioning device delivers electric shocks correlated with sounds or driven by a signal associated with a sound sequence. The sound sequence can be a few seconds of a recorded human voice, a siren, a single tone, and so forth.
Conceived Innovations


03/31/16
20160090978 

Single actuator-operated cooling jet apparatus


Provided is a cooling spray device using a piezoelectric element, comprising an air spray body having a space part formed by coupling, to be airtight, upper and lower layer surfaces formed of resin and/or metal material and provided with a disc-type piezoelectric plate having the piezoelectric property to cross the space part, thereby dividing the space part into first and second chambers, wherein, at least one air pathway for connecting the space part to the outside so as to make air flow into or out from the space part is formed at one side of the air spray body, an air separation film formed by protruding towards the air pathway so as to separate air to be sucked in from air to be discharged is formed at one side of the piezoelectric plate.. .

03/31/16
20160090300 

Piezoelectric microphone with integrated cmos


A piezoelectric microphone and/or a piezoelectric microphone system is presented herein. In an implementation, a piezoelectric microphone includes a microelectromechanical systems (mems) layer and a complementary metal-oxide-semiconductor (cmos) layer.
Invensense, Inc.


03/31/16
20160089877 

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus


A piezoelectric element includes a first electrode layer which is stacked on the vibrating plate; a second electrode layer which is stacked on a side opposite to the vibrating plate with respect to the first electrode layer; a piezoelectric layer which is interposed between the first electrode layer and the second electrode layer; and a conductive layer which electrically connects the first electrode layer to external wiring, in which a point of contact between the conductive layer and the first electrode layer is in a vibrating region of the vibrating plate.. .
Seiko Epson Corporation


03/31/16
20160089601 

Piezoelectric video game controller


A joystick, or video game controller, comprising a plurality of a plurality of piezoelectric depressible buttons and/or thermoelectric generators for powering the joystick. Piezoelectric components are disposed beneath depressible buttons and a plurality of directional keypads on the video game controller in some embodiments.

03/31/16
20160089111 

Ultrasonic sensor as well as probe and electronic apparatus


An ultrasonic sensor includes a vibration plate, a first electrode, a piezoelectric body, and a second electrode. The first electrode is laminated on the vibration plate, that has a length along a surface of the vibration plate in a first direction, and that has a width wbe along the surface of the vibration plate in a second direction that is orthogonal to the first direction.
Seiko Epson Corporation


03/31/16
20160089079 

Prosthetic knee joint measurement system including energy harvesting and method therefor


An orthopedic implant having an energy-harvesting device is disclosed. In one embodiment the orthopedic implant is a prosthetic component of a joint of the muscular-skeletal system.
Orthosensor Inc.


03/31/16
20160089043 

System and measuring solid stress in tissues


A system and method is configured for use with an endoscope, a biopsy needle, and a data acquisition system. The system includes a sensor tip and a pressure sensor coupled to the sensor tip and having at least one piezo-resistor component with an internal-facing side and an external-facing side, and an opening adjacent to the at least one piezo-resistor component to allow fluid access to the internal-facing side and the external-facing side.

03/24/16
20160088409 

Acoustic device


This acoustic device can suppress a loss in sense of volume and sense of comfort. The acoustic device includes a vibration unit (10) including a piezoelectric element (101) that flexes and a panel (102) that vibrates by being bent directly by the piezoelectric element (101).
Kyocera Corporation


03/24/16
20160088401 

Microphone and manufacturing the same


A microphone and method of manufacturing the microphone are provided. The microphone includes a substrate that has a penetration aperture, a vibration film disposed on the substrate that covers the penetration aperture, and a first electrode disposed on the vibration film.
Hyundai Motor Company


03/24/16
20160088400 

Microphone and manufacturing the same


A microphone and method for manufacturing the microphone are provided. The microphone includes a substrate with a penetration aperture, a vibration unit disposed on the substrate to cover the penetration aperture, and a fixed electrode disposed over, and spaced from, the vibration unit.
Hyundai Motor Company


03/24/16
20160088399 

Electronic apparatus


An electronic apparatus for generating a vibration sound by causing a piezoelectric element to vibrate a member having the piezoelectric element attached thereto in an excellent manner is provided. In particular, an electronic apparatus 1 according to the disclosure herein including a piezoelectric element 30 and a panel 10 having the piezoelectric element attached thereto, the electronic apparatus for causing the piezoelectric element 30 to deform the panel 10 in such a manner vibrating a part of a human body in contact with the panel 10 being deformed, and thereby delivering sound, wherein the panel 10 has a recess 10a formed thereon, and the piezoelectric element 30 is attached to the recess 10a..
Kyocera Corporation


03/24/16
20160088227 

Vibration type actuator, optical device, and image pickup apparatus


Provided is an ultrasonic motor that includes a vibrator to which a piezoelectric element is fixed and a friction member having a frictional contact surface with the vibrator. A pressurizing member pressurizes the vibrator toward the friction member using a resilient force of a coil spring.
Canon Kabushiki Kaisha


03/24/16
20160088198 

Actuator unit and camera module including the same


There is provided an actuator unit including: a support member supporting a first lens so that the first lens is maintained in a non-contact state with a second lens adjacent thereto; and a piezoelectric member connected to the support member, deforming the support member so that the lenses are movable in an optical axis direction, and including a plurality of piezoelectric elements and a plurality of internal electrodes. The actuator unit configured as described above may improve driving reliability of the lens..
Samsung Electro-mechanics Co., Ltd.


03/24/16
20160087187 

Capacitive coupled resonator and filter device with comb electrodes and support pillars separating piezoelectric layer


A capacitive coupled resonator device includes a substrate, a bottom electrode, a piezoelectric layer, a top electrode, and at least one set of support pillars positioned between the piezoelectric layer and the top electrode and/or between the piezoelectric layer and the bottom electrode. The top electrode includes a first top comb electrode having a first top bus bar and first top fingers extending in a first direction from the first top bus bar, and a second top comb electrode having a second top bus bar and second top fingers extending in a second direction from the second top bus bar, the second direction being substantially opposite the first direction such that the first and second top fingers form a top interleaving pattern.
Avago Technologies General Ip (singapore) Pte. Ltd.


03/24/16
20160087186 

Capacitive coupled resonator and filter device with comb electrodes and support frame separation from piezoelectric layer


A capacitive coupled resonator device includes a substrate, a bottom electrode, a piezoelectric layer, a top electrode, and at least one support frame positioned between the piezoelectric layer and the top electrode and/or positioned between the piezoelectric layer and the bottom electrode. The top electrode includes a first top comb electrode having a first top bus bar and first top fingers extending in a first direction from the first top bus bar, and a second top comb electrode having a second top bus bar and second top fingers extending in a second direction from the second top bus bar, the second direction being substantially opposite to the first direction such that the first and second top fingers form a top interleaving pattern.
Avago Technologies General Ip (singapore) Pte. Ltd


03/24/16
20160086625 

Circuit connection pad design for improved electrical robustness using conductive epoxy


Disk drives including head suspensions within dual stage actuation systems have improved electrical connectivity between electrical connection pads from flexible circuits as are applied to head suspension assemblies with piezoelectric microactuators as also provided to head suspension assemblies. A more robust electrical connection provides for better control of microactuator actuation for fine movements and positioning of magnetic read/write heads relative to disk data tracks as part of dual stage actuated suspension systems.
Seagate Technology Llc


03/24/16
20160086590 

Musical sound control device, musical sound control method, program storage medium and electronic musical instrument


A piezo pickup which detects a key depression vibration occurred by a key depression operation is provided on the center of the lower surface of a key switch board where key switches of a keyboard are arranged. A cpu acquires the key number of a depressed key and a distance between the key switch of this key number and the piezo pickup in response to the key depression operation, and controls the sound volume and the tone color of a musical sound at a pitch corresponding to the key number based on control data acquired by correcting the detection output level (piezo input envelope waveform) of the piezo pickup in accordance with the acquired distance..
Casio Computer Co., Ltd.


03/24/16
20160085356 

Piezoresistive sensor for a stylus


A pressure sensitive stylus includes a stylus housing, a writing tip protruding from the housing and a pressure sensor. The pressure sensor includes a piezoresistive element, a support element including a first end fixed to the writing tip and a second end that is opposite the first end and presses against the piezoresistive element and circuitry for detecting pressure applied on the piezoresistive element with the support element..
Microsoft Technology Licensing, Llc


03/24/16
20160084958 

Parking assistance for a vehicle


Systems and techniques are described that provide automated parking assistance for a vehicle. In some implementations, a parking assistance apparatus includes a frequency generator configured to generate a first frequency and a second frequency, and generate at least one synthesized frequency that is synthesized from the first frequency and the second frequency.
Lg Electronics Inc.


03/24/16
20160084673 

Wireless mvt sensor


A small-footprint and low-power mvt system includes an explosion-proof housing, a high impedance piezo-resistive sensor contained within the housing for measuring at least one parameter of a fluid, an integrated battery storage unit, and an array of solar cells within the housing configured to collect ambient light and to recharge the battery storage unit.. .
Newgate Instruments, Llc


03/24/16
20160084331 

Method and device for real time estimation of the applied pressure and of noisiness in a brake element, in particular a brake pad


A brake element is sensorized by at least one piezoceramic sensor arranged between a metallic support element and a block of friction material of a brake element, the sensor being completely embedded within the block. An electrical voltage signal generated by at least one piezoceramic sensor, without the need for a power supply, is picked up by an electrical circuit integrated into the metallic support element.

03/24/16
20160082735 

Piezoelectric device, liquid ejecting head, liquid ejecting apparatus and manufacturing piezoelectric device


A piezoelectric device comprising a substrate having two surface sides; a vibration plate on one of the two surface side, a piezoelectric element including a first electrode provided on the vibration plate, a piezoelectric body layer provided on the first electrode, the piezoelectric body layer having a groove section on a side surface, the groove section including a first surface facing to the vibration plate, and a second electrode provided on the piezoelectric body layer, and a stress application film having tensile stress and provided on an inner surface of the groove section.. .
Seiko Epson Corporation


03/24/16
20160082727 

Liquid ejecting head and liquid ejecting apparatus


There is provided a recording head unit that includes a recording head main body that drives a piezoelectric element to generate a pressure change in ink filling a pressure generation chamber so as to eject the ink through a nozzle formed in a nozzle plate; a holder to hold the recording head main body; and a fixing plate to which end surfaces, on the nozzle plate side, of the recording head main body and the holder are fixed. In the stated recording head unit, the fixing plate includes a slope section that is arranged in part of a predetermined region of the fixing plate where neither the holder nor the recording head main body is fixed, and that has a free movement portion of which cross section is formed in a mountain-like shape and which is capable of freely moving in a direction intersecting with a surface direction of the fixing plate; the fixing plate further includes a fixing portion with which a base end of the free movement portion is fixed to the holder; and the fixing plate is so configured as to be expanded/contracted in the surface direction of the fixing plate by a force applied in this direction..
Seiko Epson Corporation


03/24/16
20160082723 

Inkjet head, driving same, and inkjet printer


A drive signal applied to a thin-film piezoelectric element includes the following: at least one discharge pulse that causes a drop of ink to be discharged from a pressure chamber; and a cancellation pulse. Said cancellation pulse has the same polarity as the discharge pulse(s) and serves to suppress reverberations of a pressure wave applied to the pressure chamber when the thin-film piezoelectric element is driven by the application of the discharge pulse(s).
Konica Minolta, Inc.


03/24/16
20160082720 

Method of sensing degradation of piezoelectric actuators


Systems and methods for sensing degradation of a piezoelectric actuator in a print head. One or more electrical pulses may be transmitted to the piezoelectric actuator that cause the piezoelectric actuator to bend, thereby creating a pressure wave.
Xerox Corporation


03/24/16
20160082521 

Tool clamping system


The invention discloses a tool clamping system comprising a tool holder for clamping a tool, said tool holder being configured for being driven rotatingly; a tool secured to the tool holder; a tool shaft carried by the tool; at least one cutting edge carried by the tool; at least one piezo element for generating a voltage from mechanical vibration energy of the rotating tool clamping system; and at least one delay element selected form the group consisting of an inductor and a capacitor being connected to the at least one piezo element so as to form an electrical oscillating circuit, wherein the oscillating circuit is configured for monitoring at least one operating parameter of the tool clamping system.. .
Bilz Werkzeugfabrik Gmbh & Co. Kg


03/24/16
20160082476 

Vibration generating device


There is provided a vibration generating device including: a housing of which one side is open to form a frequency adjustment hole; a vibrating member having a fixed end which is fixed to the housing and a free end which is extended from the fixed end to thereby vibrate; a weight body provided on the vibrating member; and a piezoelectric element coupled to one surface of the vibrating member.. .
Samsung Electro-mechanics Co., Ltd.


03/24/16
20160082475 

Vibration generating device


There is provided a vibration generating device including: a housing having an internal space; a vibrating member provided in the internal space to vibrate; a piezoelectric element coupled to one surface of the vibrating member; and a board which is provided to enclose a portion of outer surfaces of the housing, on which at least one driving element is mounted in order to supply a voltage to the piezoelectric element, and of which one side is disposed in the internal space to be connected to the piezoelectric element.. .
Samsung Electro-mechanics Co., Ltd.




Piezo topics: Piezoelectric, Transducer, Ultrasonic, Electric Actuator, Electronic Device, Electronic Apparatus, Damping Force, Radial Flow, Semiconductor Material, Semiconductor, Sound Transducer, Ultrasound, Synchronous, Asynchronous, Liquid Adhesive

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