Piezoelectric Driven Patents (Class 417/413.2)
  • Patent number: 11047376
    Abstract: A piezoelectric pump includes a leaf spring including a disc portion defining an actuator, an outer frame portion defining a housing, and an elastic support portion. The actuator flexurally vibrates from a center portion of a principal surface thereof to an outer periphery thereof. The elastic support portion includes a beam portion and connection portions and elastically supports the disc portion on the outer frame portion. The beam portion extends in a gap between the disc portion and the outer frame portion in a direction along an outer periphery of the disc portion. A first of the connection portions connects the beam portion to the disc portion. Second and third connection portions are offset from the first connection portion and connect the beam portion to the outer frame portion.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: June 29, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Atsuhiko Hirata, Yukiharu Kodama, Kenta Omori
  • Patent number: 11043444
    Abstract: A cooling system and method for using the cooling system are described. The cooling system includes a plurality of individual piezoelectric cooling elements spatially arranged in an array extending in at least two dimensions, a communications interface and driving circuitry. The communications interface is associated with the individual piezoelectric cooling elements such that selected individual piezoelectric cooling elements within the array can be activated based at least in part on heat energy generated in the vicinity of the selected individual piezoelectric cooling elements. The driving circuitry is associated with the individual piezoelectric cooling elements and is configured to drive the selected individual piezoelectric cooling elements.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: June 22, 2021
    Assignee: Frore Systems Inc.
    Inventors: Suryaprakash Ganti, Seshagiri Rao Madhavapeddy
  • Patent number: 11018291
    Abstract: An ultrasonic device includes a vibration portion, a first electrode, a piezoelectric body, and a second electrode which are laminated in this order in a laminate direction, in which an outer circumferential edge of the first electrode is larger than an outer circumferential edge of the piezoelectric body in a plan view across the laminate direction, in which the piezoelectric body includes an active portion that is provided in the vibration portion, and an extraction portion that is connected to the active portion and is provided over the inside and the outside of the vibration portion, in which a width dimension of the extraction portion is smaller than a width dimension of the active portion, and in which the second electrode is provided on the active portion and the extraction portion.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: May 25, 2021
    Inventors: Chikara Kojima, Koji Ohashi, Hikaru Iwai, Kanechika Kiyose
  • Patent number: 10998254
    Abstract: A cooling system and method for using the cooling system are described. The cooling system includes a plurality of individual piezoelectric cooling elements spatially arranged in an array extending in at least two dimensions, a communications interface and driving circuitry. The communications interface is associated with the individual piezoelectric cooling elements such that selected individual piezoelectric cooling elements within the array can be activated based at least in part on heat energy generated in the vicinity of the selected individual piezoelectric cooling elements. The driving circuitry is associated with the individual piezoelectric cooling elements and is configured to drive the selected individual piezoelectric cooling elements.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 4, 2021
    Assignee: Frore Systems Inc.
    Inventors: Suryaprakash Ganti, Seshagiri Rao Madhavapeddy
  • Patent number: 10975856
    Abstract: A gas transportation device is provided and includes a plurality of flow guiding units. Each of the flow guiding units includes an inlet plate, a substrate, a resonance plate, an actuating plate, a piezoelectric component, an outlet plate and a valve, which are sequentially stacked. A convergence chamber is formed between the resonance plate and the inlet plate. The actuating plate has a suspension part, an outer frame and a plurality of interspaces. The piezoelectric component is attached on a surface of the suspension part. Gas is inhaled into the convergence chamber via an inlet aperture of the inlet plate, is transported into a first chamber via a central aperture of the resonance plate, is further transported into a second chamber via the interspaces, and is discharged out from an outlet aperture of the outlet plate. The gas is transported by the flow guiding units disposed in a specific arrangement.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: April 13, 2021
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Chi-Feng Huang, Wei-Ming Lee, Hsien-Chung Tai, Yung-Lung Han
  • Patent number: 10973965
    Abstract: Systems and methods for controlling and/or calibrating a pump system for use in negative pressure wound therapy are described herein. In some embodiments, a method for controlling a pump system includes calculating an amplitude and an offset for a drive signal based at least in part on previously calculated parameters and a negative pressure setting, generating the drive signal, and applying the drive signal to a pump system. The pump system can be fludicially connected to a wound dressing positioned over a wound.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 13, 2021
    Assignee: Smith & Nephew PLC
    Inventors: Ben Alan Askem, Iacopo Claudio Ferrari, Matteo Foini, Paolo Forzani, Christopher John Fryer, Allan Kenneth Frazer Grugeon Hunt, Christian Riva
  • Patent number: 10962452
    Abstract: An actuating and sensing module includes a first substrate, a second substrate, an actuating device and a sensor. The first and second substrates are stacked on each other as a gas flow channel is formed therebetween. The gas inlet, the gas flow channel and the gas outlet are in communication with each other to define a gas flow path. The actuating device is disposed in the gas outlet of the second substrate and electrically connected to a control circuit to obtain driving power. The sensor is disposed in the gas flow path and misaligned with the gas inlet. The sensor is spaced apart from the actuating device and is electrically connected to the control circuit. Being driven by the actuating device, the gas is transported from the outside into the gas flow path and monitored by the sensor.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: March 30, 2021
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Shih-Chang Chen, Chi-Feng Huang, Yung-Lung Han, Chun-Yi Kuo
  • Patent number: 10955320
    Abstract: A gas detecting device includes a casing, a gas transportation actuator, a gas detector and a driving module. The casing has an inlet, an outlet and an accommodation slot. The inlet and the outlet are in fluid communication with each other, and the accommodation slot is disposed under the inlet and is in fluid communication with the inlet. The gas transportation is disposed within and seals the accommodation slot, and the gas transportation actuator is enabled to introduce air thereinto through the inlet and discharge the air through the outlet. The gas detector is configured to detect an amount of a specific gas in the air introduced through the inlet. The driving module controls the actuations of the gas transportation actuator and the gas detector, so that the gas detector detects the amount of the specific gas in the air.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: March 23, 2021
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Shih-Chang Chen, Ching-Sung Lin, Yung-Lung Han, Chi-Feng Huang, Wei-Ming Lee
  • Patent number: 10907658
    Abstract: The disclosed fluidic power transmission apparatus may include a conduit having an internal volume for containing a fluid, a reciprocating input mechanism for alternating at least one of fluid flow or fluid pressure within the conduit, the reciprocating input mechanism being in fluid communication with the internal volume of the conduit, and a slave unit coupled to the conduit such that the slave unit is positioned to be driven by the alternating fluid flow or fluid pressure within the internal volume of the conduit. Various other methods and systems are also disclosed.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: February 2, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Nicholas Roy Corson, Adam Ahne, Daniele Piazza
  • Patent number: 10881885
    Abstract: An air-filtering protection device includes a filtering mask and an actuating and sensing device. The filtering mask is made of a graphene-doping material and wearable to filter air and includes a first coupling element. The actuating and sensing device includes a second coupling element. The second coupling element is engaged with the first coupling element of the filtering mask for allowing the actuating and sensing device to be detachably mounted on the filtering mask. The actuating and sensing device includes at least one senor, at least one actuating device, a microprocessor, a power controller and a data transceiver. The at least one actuating device is disposed on one side of the at least one sensor and includes at least one guiding channel. The actuating device is enabled to transport an air to flow toward the sensor through the guiding channel so as to make the air sensed by the sensor.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: January 5, 2021
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Yung-Lung Han, Chi-Feng Huang, Chang-Yen Tsai, Wei-Ming Lee, Hsuan-Kai Chen
  • Patent number: 10864726
    Abstract: A liquid ejecting head includes: a nozzle from which a liquid is ejected; a communication passage that is in communication with the nozzle; a first pressure compartment that is connected to the communication passage through a first passage; a second pressure compartment that is connected to the communication passage through a second passage; a first drive element that changes pressure of the first pressure compartment; and a second drive element that changes pressure of the second pressure compartment.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: December 15, 2020
    Inventors: Hiromu Miyazawa, Toshihiro Shimizu
  • Patent number: 10850027
    Abstract: Method for detecting failure including possible under or over delivery of a micropump having at least an inlet valve, a pumping chamber with an inner pressure sensor and an outlet valve, said method comprising the determination of the pump tightness via the measurement of the pressure by said inner pressure sensor in said pumping chamber at least at certain intervals when the pump is inactive and the comparison with a value of reference.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: December 1, 2020
    Assignee: DEBIOTECH S.A.
    Inventors: Eric Chappel, Stephan Proennecke, Frédéric Neftel
  • Patent number: 10823165
    Abstract: A gas transportation device includes a casing, a nozzle plate, a chamber frame, an actuator, an insulating frame and a conducting frame, which are stacked sequentially. A resonance chamber is defined by the actuator, the chamber frame and the suspension plate collaboratively. When the actuator is enabled, the nozzle plate is subjected to resonance and the suspension plate of the nozzle plate vibrates in the reciprocating manner. Consequently, the gas is transferred to a gas-guiding chamber through the at least one vacant space and discharged from the discharging opening and the gas is circulated.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: November 3, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Chun-Lung Tseng, Che-Wei Huang, Chien-Tang Wen, Shih-Chang Chen, Yung-Lung Han, Chi-Feng Huang
  • Patent number: 10801485
    Abstract: A gas transportation device includes a casing, a nozzle plate, a chamber frame, an actuator, an insulating frame and a conducting frame, which are stacked sequentially. The nozzle plate includes at least one bracket, a suspension plate and a through hole. The bracket includes a fixing part and a connecting part. A shape of the fixing part matches a shape of the fixing recess. The nozzle plate is accommodated within the accommodation space. A resonance chamber is defined by the actuator, the chamber frame and the suspension plate collaboratively. When the actuator is enabled, the nozzle plate is subjected to resonance and the suspension plate of the nozzle plate vibrates in the reciprocating manner. Consequently, the gas is transported to a gas-guiding chamber through the at least one vacant space and outputted from the discharging opening, thereby achieving the gas transportation and circulation.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: October 13, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Chun-Lung Tseng, Che-Wei Huang, Chien-Tang Wen, Shih-Chang Chen, Yung-Lung Han, Chi-Feng Huang
  • Patent number: 10774824
    Abstract: A miniature fluid control device for transporting gas is disclosed, which includes a gas inlet plate, a resonance plate, a piezoelectric actuator and a gas collecting plate stacked on each other. The gas inlet plate includes at least one inlet, at least one convergence channel and a circular cavity which forms a convergence chamber. The resonance plate has a central aperture. The piezoelectric actuator includes a suspension plate, an outer frame and a piezoelectric plate, wherein the suspension plate has a cylindrical bulge aligned with the circular cavity. The ratio of a second diameter of the cylindrical bulge to a first diameter of the circular cavity is set in a specified range to optimize the gas pressure of the transported gas, thus assuring efficiency of gas transmission of the miniature fluid control device.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: September 15, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hung-Hsin Liao, Shih-Chang Chen, Jia-Yu Liao, Yung-Lung Han, Chi-Feng Huang, Wei-Ming Lee
  • Patent number: 10765807
    Abstract: A wearable drug delivery device for monitoring unintended over-delivery and/or under-delivery of a stored liquid drug are provided. An absolute pressure sensor can be positioned within the fluid path of the drug delivery device. The absolute pressor sensor can detect both ambient pressure (e.g., absolute or atmospheric pressure) and relative pressure (gage or pumping pressure). Based on the detected pressures, the effects of external ambient pressure on air with the fluid path can be determined during both intended drug delivery events and unintended drug delivery events. In turn, under-delivery and/or over-delivery of the liquid drug can be determined. Based on the severity of the determined under-delivery or over-delivery of the liquid drug, alarms indicating different urgencies can be provided to the user.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: September 8, 2020
    Assignee: INSULET CORPORATION
    Inventors: Daniel Allis, Kenneth Phillips, Jacob Anthony Coumans
  • Patent number: 10739170
    Abstract: Disclosed is a micro flow device including a body frame defining a chamber and having a first port and a second port into the chamber. A first membrane carrying a first electrode is disposed over a first face of the body frame and a second membrane carrying a second electrode is disposed over a second face of the body frame. An axle member is disposed in the chamber affixed to the first and second membrane and a wheel member is disposed in the chamber about the axle member and spaced from the axle element by a gap. An interrupter feature is formed on the wheel, with the interrupter feature causing a variation in capacitance between the first and second electrodes during rotation of the wheel. Also disclosed are techniques for providing freely rotating, sliding, moving, etc. features in devices fabricated by roll to roll processes.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: August 11, 2020
    Assignee: Encite LLC
    Inventor: Stephen Alan Marsh
  • Patent number: 10702418
    Abstract: Some embodiments disclosed herein are directed to a pump assembly comprising a voice coil, a magnet and a diaphragm, wherein the voice coil is configured to move the diaphragm to pump a fluid through the pump assembly in response to a drive signal applied to the voice coil. Some embodiments disclosed herein are directed to an apparatus for applying negative pressure to a wound comprising a source of negative pressure configured to be coupled to a dressing, the source of negative comprising a voice coil actuator and a diaphragm, and a controller configured to produce a drive signal for the voice coil actuator.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: July 7, 2020
    Assignee: Smith & Nephew PLC
    Inventors: Trevor John Beckett, Iacopo Claudio Ferrari, Christopher John Fryer, Alexander David Norman, Christian Riva, Gary Stacey
  • Patent number: 10697448
    Abstract: A miniature fluid control device includes a piezoelectric actuator, a gas collecting plate and a base. The piezoelectric actuator includes a suspension plate, an outer frame, at least one bracket and a piezoelectric ceramic plate. The suspension plate is a square plate. The outer frame is arranged around the suspension plate. A surface of the outer frame and a surface of the suspension plate are coplanar with each other. The gas collecting plate is a frame body with an accommodation space. The base includes a gas inlet plate and a resonance plate. The base is disposed within the accommodation space to seal the piezoelectric actuator. An adhesive layer is arranged between the second surface of the outer frame of the piezoelectric actuator and the resonance plate. Consequently, a depth of a compressible chamber between the piezoelectric actuator and the resonance plate is maintained.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: June 30, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Yung-Lung Han, Chi-Feng Huang, Shih-Chang Chen, Jia-Yu Liao, Hung-Hsin Liao, Che-Wei Huang, Shou-Hung Chen
  • Patent number: 10648463
    Abstract: A gas control device (100) includes a first pump (101), a second pump (201), a first check valve (102), a second check valve (202), and a receptacle (9). The volume of the receptacle (9) changes in accordance with the pressure of air flowing thereinto. The first pump (101) has an air suction hole (53) and an air discharge hole (24). The second pump (201) has an air suction hole (197) and an air discharge hole (181). The first pump (101) is a type of pump having a high discharge flow rate and a low discharge pressure. The second pump (201) is a type of pump having a low discharge flow rate and a high discharge pressure. The suction hole (53) of the first pump (101) communicates with a first ventilation hole (106). The suction hole (197) of the second pump (201) communicates with a second ventilation hole (107).
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: May 12, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Atsuhiko Hirata
  • Patent number: 10590526
    Abstract: The invention relates to the technical field of display, particularly a pressurized spray deposition device and method for an organic material steam. The pressurized spray deposition device comprises an uniform-pressure mixing chamber, an organic material steam source, a high-pressure carrier gas feeding device, a piezoelectric pressurizing device and a nozzle, wherein the organic material steam source and the high-pressure carrier gas feeding device are respectively connected with the uniform-pressure mixing chamber, and an outlet of the uniform-pressure mixing chamber is connected with the nozzle through the piezoelectric pressurizing device. The organic material steam in the organic material steam source enters the uniform-pressure mixing chamber and is mixed with the introduced carrier gas to form a carried gas mixture.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: March 17, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yangkun Jing
  • Patent number: 10532354
    Abstract: In certain aspects of the invention, a stackable device includes multiple elements stacked sequentially. A chamber is formed in each of the elements or between adjacent two of the elements, and each chamber is in fluid communication with an input channel and an output channel. The chambers are aligned with each other, and adjacent two chambers are separated from each other by a membrane. In certain aspects of the invention, a system includes at least one stackable device, each stackable device having multiple chambers; and at least one of a perfusion controller, a microformulator, and a microclinical analyzer in fluid communication with the at least one stackable device. In other aspects of the invention, the use of four microformulators, electrodes and an impedance analyzer can measure the impedance spectrum of each barrier in a multi-transwell plate.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 14, 2020
    Assignee: VANDERBILT UNIVERSITY
    Inventors: John P. Wikswo, Dmitry A. Markov, Ronald S. Reiserer
  • Patent number: 10502644
    Abstract: [Solving Means] A force-sense presenting apparatus includes a casing structure, a weight, and a drive unit. The weight is provided in the casing structure or incorporated in the casing structure. The drive unit includes a first supporting portion constituted of a pair of supporting structures that support a first side of the weight and a second side opposed to the first side, at least one of the pair of supporting structures being configured to include an actuator capable of providing the weight with biased acceleration.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: December 10, 2019
    Assignee: Sony Corporation
    Inventors: Akira Ono, Mikio Takenaka, Shunki Shibaoka, Masaki Kawata, Hideaki Hayashi, Akihiro Nakata
  • Patent number: 10487820
    Abstract: A miniature pneumatic device includes a miniature fluid control device and a miniature valve device. The miniature fluid control device includes a gas inlet plate, a resonance plate, a piezoelectric actuator and a gas collecting plate. A first chamber is formed between the resonance plate and the piezoelectric actuator. After a gas is fed into the gas inlet plate, the gas is transferred to the first chamber through the resonance plate and then transferred downwardly. Consequently, a pressure gradient is generated to continuously push the gas. The miniature valve device includes a valve plate and a gas outlet plate. After the gas is transferred from the miniature fluid control device to the miniature valve device, the valve opening of the valve plate is correspondingly opened or closed and the gas is transferred in one direction. Consequently, a pressure-collecting operation or a pressure-releasing operation is selectively performed.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: November 26, 2019
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Shih-Chang Chen, Chi-Feng Huang, Yung-Lung Han, Jia-Yu Liao, Shou-Hung Chen, Che-Wei Huang, Hung-Hsin Liao, Chao-Chih Chen, Jheng-Wei Chen, Ying-Lun Chang, Chia-Hao Chang, Wei-Ming Lee
  • Patent number: 10465672
    Abstract: A piezoelectric pump includes a leaf spring including a disc portion defining an actuator, an outer frame portion defining a housing, and an elastic support portion. The actuator flexurally vibrates from a center portion of a principal surface thereof to an outer periphery thereof. The elastic support portion includes a beam portion and connection portions and elastically supports the disc portion on the outer frame portion. The beam portion extends in a gap between the disc portion and the outer frame portion in a direction along an outer periphery of the disc portion. A first of the connection portions connects the beam portion to the disc portion. Second and third connection portions are offset from the first connection portion and connect the beam portion to the outer frame portion.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: November 5, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Atsuhiko Hirata, Yukiharu Kodama, Kenta Omori
  • Patent number: 10286144
    Abstract: Method for detecting failure including possible under or over delivery of a micropump having at least an inlet valve, a pumping chamber with an inner pressure sensor and an outlet valve, said method comprising the determination of the pump tightness via the measurement of the pressure by said inner pressure sensor in said pumping chamber at least at certain intervals when the pump is inactive and the comparison with a value of reference.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: May 14, 2019
    Assignee: DEBIOTECH S.A.
    Inventors: Eric Chappel, Stephan Proennecke, Frédéric Neftel
  • Patent number: 10260495
    Abstract: A piezoelectric blower includes a housing, a vibrating body, and a piezoelectric element. The vibrating body includes a vibration plate, a reinforcing plate, and a restraining plate. The vibrating body forms a columnar blower chamber with the housing while holding the blower chamber therebetween from a thickness direction of the vibration plate. The vibrating body includes an outer peripheral region in contact with an area from the outermost node of pressure vibration in the blower chamber, of nodes of the pressure vibration formed by the bending vibration of the vibrating body, to an outer periphery of the blower chamber, and a center region located in an inner side portion of the outer peripheral region. The restraining plate that restrains the bending vibration of the outer peripheral region is provided in the outer peripheral region.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: April 16, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masahiro Sasaki, Kiyoshi Kurihara, Hiroaki Wada, Nobuhira Tanaka
  • Patent number: 10221845
    Abstract: A piezoelectric blower (100) includes a housing (17), a vibrating plate (41), and a piezoelectric element (42). The vibrating plate (41) forms a column-shaped blower chamber (31) together with the housing (17). The vibrating plate (41) and the housing (17) are formed so that the blower chamber (31) has a radius a. The piezoelectric element (42) causes the vibrating plate (41) to concentrically bend and vibrate at a resonance frequency f. A recessed portion (26) is formed in the housing (17) on the side facing the vibrating plate (41). The recessed portion (26) defines a cavity (25), which constitutes the blower chamber (31) and communicates with the vent hole (24). The radius a of the blower chamber (31) and the resonance frequency f of the vibrating plate (41) satisfy a relationship of 0.8×(k0c)/(2?)?af?1.2×(k0c)/(2?).
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: March 5, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Nobuhira Tanaka, Hiroyuki Yokoi, Masahiro Sasaki, Kiyoshi Kurihara
  • Patent number: 10107281
    Abstract: A piezoelectric blower includes an outer casing and a blower main body. The outer casing houses the blower main body. The blower main body includes a top plate, side plate, first vibrating plate, piezoelectric element, intermediate plate, second vibrating plate, side plate, and bottom plate and has a structure in which they are laminated in sequence. The top plate, side plate, and first vibrating plate define a columnar first blower space. The second vibrating plate, side plate, bottom plate define a columnar second blower space. The distance from a neutral plane of the piezoelectric element in the thickness direction to a surface of the second vibrating plate, the surface being near the piezoelectric element, is longer than the distance from the neutral plane to a surface of the first vibrating plate, the surface being near the piezoelectric element.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: October 23, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Nobuhira Tanaka, Daisuke Kondo, Kiyoshi Kurihara
  • Patent number: 10018194
    Abstract: A micro pump is formed on a substrate having a common inlet channel and a common outlet channel by a plurality of pumping elements, each pumping element having an inlet coupled to the common inlet channel and an outlet coupled to the common outlet channel, the inlet and outlet connected by a microfluidic channel, the microfluidic channel comprising a valvular conduit having low fluid flow resistance in a direction from the inlet to the outlet and high fluid flow resistance in a direction from the outlet to the inlet, and an actuating element arranged to cause fluid to be pumped through the microfluidic channel from the inlet to the outlet, wherein the actuating element is based on one or more of piezoelectric, thermal, electrostatic or electromagnetic transduction. A controller is coupled to actuate the actuating elements at mutually staggered relative timing so as to produce a substantially continuous steady flow.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: July 10, 2018
    Assignee: ATOMJET LTD.
    Inventor: Robert Alan Harvey
  • Patent number: 9714651
    Abstract: A piezoelectric pump includes a piezoelectric element, an intermediate plate, and a vibrating plate. The piezoelectric element has a substantially flat plate shape. The intermediate plate is bonded to a principal surface of the piezoelectric element and applies a residual stress in a compressive direction to the piezoelectric element. The vibrating plate is bonded to the intermediate plate such that the vibrating plate faces a principal surface of the piezoelectric element and receives a residual stress in a compressive direction from the intermediate plate. In addition, the vibrating plate defines a portion of a wall surface of a pump chamber having an open hole. A fluid passage is provided in the piezoelectric pump. The fluid passage communicates with the outside of the chamber at one end thereof, and communicates with the pump chamber through the open hole at the other end.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: July 25, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Atsuhiko Hirata, Gaku Kamitani
  • Patent number: 9638182
    Abstract: The present invention relates to pump systems having graphene or other atomically thin electrically conductive materials supported by trough-shaped cavities.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 2, 2017
    Assignee: Clean Energy Labs, LLC
    Inventor: Joseph F. Pinkerton
  • Patent number: 9588100
    Abstract: An apparatus and method of identifying objects includes: a microfluidic chip in which are disposed a plurality of channels, the microfluidic chip including: a main fluid channel into which a sample fluid mixture of objects to be identified is introduced; a plurality of sheath fluid channels into which sheath fluids are introduced, the sheath fluids which orient the objects in the main fluid channel in a predetermined direction while still maintaining laminar flow in the main fluid channel; an interrogation apparatus which detects and interrogates the oriented objects in the main fluid channel; and a focused energy apparatus which performs an action on the objects.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: March 7, 2017
    Assignee: PREMIUM GENETICS (UK) LTD
    Inventors: David Appleyard, Jeff Betthauser, Marjorie Faust, John Larsen, Guocheng Shao, Zheng Xia, Yu Zhou
  • Patent number: 9506463
    Abstract: A dual-cavity pump having a pump body with a substantially elliptical shape including a cylindrical wall closed at each end by end plates is disclosed. The pump further comprises a pair of disc-shaped interior plates supported within the pump by a ring-shaped isolator affixed to the cylindrical wall of the pump body. The internal surfaces of the cylindrical wall, one of the end plates, one of the interior plates, and the ring-shaped isolator form a first cavity within the pump. The internal surfaces of the cylindrical wall, the other end plate, the other interior plate, and the ring-shaped isolator form a second cavity within the pump. The interior plates together form an actuator that is operatively associated with the central portion of the interior plates. The illustrative embodiments of the dual-cavity pump have three valves including one located within a common end wall between the cavities of the pump. Methods for fabricating the pump are also disclosed.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: November 29, 2016
    Assignee: KCI Licensing, Inc.
    Inventors: Christopher Brian Locke, Aidan Marcus Tout
  • Patent number: 9425027
    Abstract: Methods of affecting a material's properties through the implantation of ions, such as by using a plasma processing apparatus with a plasma sheath modifier. In this way, properties such as resistance to chemicals, adhesiveness, hydrophobicity, and hydrophilicity, may be affected. These methods can be applied to a variety of technologies. In some cases, ion implantation is used in the manufacture of printer heads to reduce clogging by increasing the materials hydrophobicity. In other embodiments, MEMS and NEMS devices are produced using ion implantation to change the properties of fluid channels and other structures. In addition, ion implantation can be used to affect a material's resistance to chemicals, such as acids.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: August 23, 2016
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Ludovic Godet, Christopher Hatem, Deepak Ramappa, Xianfeng Lu, Anthony Renau, Patrick Martin
  • Patent number: 9151284
    Abstract: A fluid control device includes a vibrating plate unit, a driver, and a flexible plate. The vibrating plate unit includes a vibrating plate including a first main surface and a second main surface, and a frame plate surrounding the surroundings of the vibrating plate. The driver is provided on the first main surface of the vibrating plate, and vibrates the vibrating plate. The flexible plate has a hole formed thereon. Furthermore, the flexible plate faces the second main surface of the vibrating plate, and adheres to the frame plate by the adhesive agent that contains a plurality of particles arranged such that the plurality of particles are interposed between the flexible plate and the vibrating plate.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: October 6, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Atsuhiko Hirata, Yoshinori Ando, Takenobu Maeda, Yukiharu Kodama, Kenta Omori, Sho Makino
  • Patent number: 9051931
    Abstract: A disc pump system includes a pump body having a substantially cylindrical shape defining a cavity for containing a fluid, and an actuator operatively associated with the central portion of a driven end wall to cause an oscillatory motion of the driven end wall thereby generating displacement oscillations with an annular node between the center of the driven end wall and the side wall when in use. A heating element is thermally coupled to the actuator to maintain the actuator at a target temperature.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: June 9, 2015
    Assignee: KCI Licensing, Inc.
    Inventors: Christopher Brian Locke, Aidan Marcus Tout
  • Patent number: 9028226
    Abstract: A fluid control device includes a vibrating plate unit, a driver, a flexible plate, and a base plate. The vibrating plate unit includes a vibrating plate including first and second main surfaces, and a frame plate surrounding the surrounding of the vibrating plate. The driver is bonded to the first or the second main surface of the vibrating plate and vibrates the vibrating plate. The flexible plate includes a hole provided therein, and is bonded to the frame plate so as to face the vibrating plate. The base plate is bonded to the main surface of the flexible plate on a side opposite to the vibrating plate. A size relationship between the coefficients of linear expansion of the material of the base plate and the frame plate is equal to a size relationship between the coefficients of linear expansion of the material of the vibrating plate and the driver.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: May 12, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Atsuhiko Hirata, Yukiharu Kodama, Kenta Omori, Masaaki Fujisaki
  • Publication number: 20150109732
    Abstract: A device for generating a flow of air, particularly for cooling electronic components, with an annular piezo element and an emitter element, wherein the annular piezo element can be vibrated radially by applying an alternating voltage, the emitter element is coupled radially to the annular piezo element, and wherein the radial vibration of the annular piezo element is configured so as to set the emitter element into axial vibration to generate the air flow which thereby permits a device of small dimensions for generating the an air flow to be created that is simultaneously characterized by low energy consumption and a long service life.
    Type: Application
    Filed: June 4, 2013
    Publication date: April 23, 2015
    Inventors: Oztzan Akif, Randolf Mock, Thomas Vonz
  • Publication number: 20150086397
    Abstract: A micropump and a disposable pump body thereof are disclosed. The micropump includes the pump body and an actuator device. The pump body includes a chamber, an inlet communicating with the chamber, an outlet communicating with the chamber and a covering membrane on top of the chamber. The actuator device includes an actuator and a transmitting post. One of the two ends of the transmitting post connects to the actuator. The other end of the transmitting post abuts against the membrane. Since the pump body is separated from the actuator device, the pump body is disposable and can be replaced after use to avoid cross-infection of disease, particularly useful for medical liquid delivery.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 26, 2015
    Inventor: Hsiao-Kang MA
  • Patent number: 8979510
    Abstract: A micropump includes: a fluid suction tube for suctioning fluid; a pumping tube connected to the fluid suction tube and providing a suction force and a discharge force to surroundings while repeatedly being expanded and contracted by an external signal; a deform tube connected to the pumping tube and having an aperture that is deformed by the suction force and the discharge force of the pumping tube; and a fluid discharge tube connected to the deform tube and discharging fluid.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: March 17, 2015
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Soo Jai Shin, Hyung Jin Sung
  • Patent number: 8979511
    Abstract: A fluid delivery system includes a first chamber, a second chamber, and a third chamber, a pair of electrodes, a porous dielectric material, an electrokinetic fluid, and a flexible member including a gel between two diaphragms. The pair of electrodes is between the first chamber and the second chamber. The porous dielectric material is between the electrodes. The electrokinetic fluid is configured to flow through the porous dielectric material between the first and second chambers when a voltage is applied across the pair of electrodes. The flexible member fluidically separates the second chamber from the third chamber and is configured to deform into the third chamber when the electrokinetic fluid flows form the first chamber into the second chamber.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: March 17, 2015
    Assignee: Eksigent Technologies, LLC
    Inventors: Deon S. Anex, Kenneth Kei-ho Nip
  • Publication number: 20150071797
    Abstract: A piezoelectric blower includes a housing, top plate, side plate, vibrating plate, piezoelectric element, and cap. The top plate, side plate, and vibrating plate define a blower chamber. The top plate includes a vent hole. The vibrating plate and piezoelectric element constitutes a piezoelectric actuator. The cap includes a wall portion facing the piezoelectric actuator and has a disc-shaped suction port. Here, a central axis of the suction port extending along a thickness direction of the wall portion and a central axis of the piezoelectric element extending along the thickness direction of the wall portion do not coincide with each other. An air channel is provided among the housing, the cap, and a joined structure of the top plate, side plate, and piezoelectric actuator.
    Type: Application
    Filed: November 20, 2014
    Publication date: March 12, 2015
    Inventor: Susumu TAKEUCHI
  • Publication number: 20150059876
    Abstract: A motor-less pump includes: (a) a housing having an inlet provided to allow fluid flow into the housing and an outlet provided to allow fluid flow out of the housing; (b) an elastic diaphragm positioned in the housing such that motion in the elastic diaphragm drives the fluid flows at the inlet and the outlet of the housing; and (c) one or more electromechanical polymer (EMP) actuators each being provided on a surface of the elastic diaphragm, wherein the mechanical responses to electrical stimuli applied on the EMP actuators cause the motion in the diaphragm. The EMP actuators may include one or more bimorphs.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Richard Ducharme, Mark Levatich
  • Publication number: 20150056087
    Abstract: A fluid control device includes a vibrating plate unit, a driver, and a flexible plate. The vibrating plate unit includes a vibrating plate with first and second main surfaces, a frame plate surrounding the vibrating plate, and a link portion linking the vibrating plate and the frame plate and elastically supporting the vibrating plate against the frame plate. The driver is on the first main surface of the vibrating plate, and vibrates the vibrating plate. The flexible plate having a hole faces the second main surface of the vibrating plate, being fixed to the frame plate. At least a portion of the vibrating plate and the link portion are thinner than the thickness of the frame plate so that the surface of the portion of the vibrating plate and the link portion, on the side of the flexible plate, can separate from the flexible plate.
    Type: Application
    Filed: November 12, 2014
    Publication date: February 26, 2015
    Inventors: Atsuhiko HIRATA, Yoshinori ANDO, Takenobu MAEDA, Yukiharu KODAMA, Kenta OMORI
  • Publication number: 20150054495
    Abstract: A sensor for a contactless electrocardiographic measurement on a person includes a carrier for fastening the sensor on an object, such as a vehicle seat, and at least one electrically flat electrode mounted to the carrier by an elastic element. An inflatable bellows is disposed between the carrier and the electrode, inflation of the bellows deflecting the elastic element and increasing a distance between the electrode and the carrier to thereby urge the electrode toward a person seated on the seat.
    Type: Application
    Filed: August 22, 2014
    Publication date: February 26, 2015
    Inventors: Jeroen LEM, Benjamin EILEBRECHT, Marcel MATHISSEN, Achim LINDNER, Rainer VOGT, Marian WALTER, Steffen LEONHARDT
  • Patent number: 8961904
    Abstract: 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.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: February 24, 2015
    Assignee: Premium Genetics (UK) Ltd.
    Inventors: Zheng Xia, Yu Zhou, John Larsen, Guocheng Shao, Shane Peterson, Marjorie Faust
  • Publication number: 20150023821
    Abstract: A fluid pump comprising one or two cavities which, in use, contains a fluid to be pumped, the chamber or chambers having a substantially cylindrical shape bounded by first and second end walls and a side wall; an actuator which, in use, causes oscillatory motion of the first end wall(s) in a direction substantially perpendicular to the plane of the first end wall(s); and whereby, in use, these axial oscillations of the end walls drive radial oscillations of the fluid pressure in the main cavity; and wherein an isolator forms at least a portion of the first end wall between the actuator and the side wall and includes conductive tracks, wherein electrical connection is made to the actuator via the conductive tracks included within the isolator.
    Type: Application
    Filed: February 11, 2013
    Publication date: January 22, 2015
    Inventors: Andrew Robert Campbell, Justin Rorke Buckland
  • Publication number: 20140377098
    Abstract: There is provided a micro pump device including a micro pump, and a housing receiving the micro pump and provided with a pipe connection port.
    Type: Application
    Filed: August 30, 2013
    Publication date: December 25, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sang Jin KIM, Bo Sung KU
  • Patent number: RE45376
    Abstract: In one embodiment, a cooling system is disclosed. The cooling system comprises: a cooling channel for receiving a cooling media, a substrate disposed near the cooling channel, and a fluidic jet disposed within the substrate and in fluid communication with the cooling channel. The cooling channel is for thermal communication with a component to be cooled. The cooling channel has a height of less than or equal to about 3 mm and a width of less than or equal to 2 mm. The fluidic jet comprises a cavity defined by a well and a membrane. In one embodiment, a method of cooling an electrical component comprises: passing a cooling media through a cooling channel, drawing the cooling media into one or more of the fluidic jets, expelling the cooling media from the one or more fluidic jets into the cooling channel, and removing thermal energy from the electrical component.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: February 17, 2015
    Assignee: General Electric Company
    Inventors: Mehmet Arik, Todd Garrett Wetzel, Stephen Adam Solovitz