Having Element Dimensionally Responsive To Field Patents (Class 251/129.06)
  • Patent number: 10527193
    Abstract: A fluid valve is provided that includes a first planar substrate having a smooth surface or a surface with features, an elastomer disposed on the first substrate, a second planar substrate disposed on another side of the elastomer, where the second substrate has a smooth surface or features, where the first and second substrate are more rigid than the elastomer, where the first substrate, the second substrate or the elastomer has a fluid channel, where the channel is open when the first or second substrate are in a first thermal state or a first compression state, where the channel is closed or partially closed when the first or second substrate are in a second thermal state or a second compression state, where the second thermal state is a different temperature than the first thermal state, where the second compression state is a different pressure than the first compression state.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: January 7, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Nate Cira, Stephen R Quake, Michael Robles, Jason Khoo
  • Patent number: 10480497
    Abstract: A feed pump (10), especially fuel feed pump for a vehicle heater, includes a pump piston (36) movable to and fro in a pump chamber (72). The pump piston ejects and receives fluid. A driving arrangement (30) drives the pump piston (36). The driving arrangement (30) includes at least one driving element (28) made of magnetic shape memory material.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: November 19, 2019
    Assignee: Eberspächer Climate Control Systems GmbH & Co. KG
    Inventor: Michael Humburg
  • Patent number: 10415522
    Abstract: The invention relates to a fuel injector, in particular a common-rail injector (1), comprising an injector housing (2), in which a nozzle needle (8), which is arranged in such a way that the nozzle needle can be moved in a reciprocating manner, is arranged in a high-pressure chamber (6) in order to open and close at least one injection opening (5), which nozzle needle bounds a control chamber (20) by means of one end face and interacts with a nozzle body seat (10) by means of the other end face in order to open and close the injection opening (5). The nozzle needle (8) has a first sleeve-shaped supporting element (14), to which force is applied in the closing direction of the nozzle needle (8). In addition, the nozzle needle (8) has a second sleeve-shaped supporting element, which surrounds the nozzle needle (8) and which is arranged in the direction of the end face of the nozzle needle (8) that is close to the control chamber.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: September 17, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Claus Minixhofer, Friedrich Kroepl, Georg Sengseis, Peter Luckeneder, Roland Mitter
  • Patent number: 10378677
    Abstract: A shaped memory alloy (SMA) valve assembly includes a plurality of SMA valves and a main printed circuit board carrying electronic components and conductors for operating the SMA valves. Each SMA valve includes a pressure chamber having a port. Each pressure chamber contains a valve element biased to a rest position in sealing abutment on a valve seat of the port, a SMA actuator, and an actuator printed circuit board for mounting and electrically connecting the SMA actuator. Each actuator printed circuit board portion is connected to the main printed circuit board portion by a bridge printed circuit board portion, and each pressure chamber has an opening to allow a respective bridge printed circuit board portion to extend therethrough. The opening is provided with a pocket filled with cured sealing glue to embed the bridge printed circuit board portion extending therethrough and to seal the opening of the pressure chamber.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: August 13, 2019
    Assignee: KONGSBERG AUTOMOTIVE SP. Z O. O.
    Inventors: Piotr Kuszneruk, Marcin Szrom, Krystof Malek, Tomasz Truszkowski
  • Patent number: 10323773
    Abstract: An electroactive material fluid control apparatus (100) is provided. The electroactive material fluid control apparatus (100) comprises a layered assembly (110) comprised of a dielectric layer (120) disposed between a first plate (130) and a second plate (140). The electroactive material fluid control apparatus (100) also includes a first fluid port (130a, 130b) formed in an outer surface of the layered assembly (110), and at least one fluid control device (200, 300, 400, 500) comprised of an electrode (212-512) disposed between the first plate (130) and a dielectric deformable material (214-514), wherein the electrode (212-512) is attached to the dielectric deformable material (214-514).
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: June 18, 2019
    Assignee: Fluid Automation Systems S.A.
    Inventor: Nicolas Deperraz
  • Patent number: 10314198
    Abstract: An air-cooling heat dissipation device is provided for removing heat from the electronic component. The air-cooling heat dissipation device includes a base and an air pump. The base includes a top surface, a bottom surface, two lateral walls, a guiding chamber, an introduction opening and plural discharge grooves. The two lateral walls are connected between the top surface and the bottom surface. The introduction opening is formed in the top surface. The guiding chamber runs through the bottom surface and is in communication with the introduction opening. The discharge grooves are formed in one of the lateral walls and in communication with the guiding chamber. The plural discharge grooves are oriented toward the electronic component, so that a lateral air flow generated by the air pump is discharged through the discharge grooves and passes the electronic component to remove heat therefrom.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: June 4, 2019
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Shih-Chang Chen, Jia-Yu Liao, Yung-Lung Han, Chi-Feng Huang
  • Patent number: 10118817
    Abstract: This application relates to MEMS transducer having a membrane layer (101) and at least one variable vent structure (301). The variable vent structure has a vent hole for venting fluid so as to reduce a pressure differential across the membrane layer and a moveable vent cover (302a, 302b) which, at an equilibrium position, at least partly blocks the vent hole. The vent cover is moveable from its equilibrium position in response to a pressure differential across the vent cover so as to vary the size of a flow path through the vent hole. In various embodiments the vent cover comprises at least a first flap section (302a) and a second flap section (302b), the first flap section being hingedly coupled to the side of the vent hole and the second flap section being hingedly coupled to the first flap section so as to be moveable with respect to the first flap section.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: November 6, 2018
    Assignee: Cirrus Logic, Inc.
    Inventors: Scott Lyall Cargill, Marek Sebastian Piechocinski
  • Patent number: 10107409
    Abstract: A valve is disclosed and comprises a main valve body having first and second ports and a movable poppet positioned within the main valve body. The movable poppet is moveable from a first closed position in which the poppet establishes a fluid-tight seal with a sealing member, which is effective to prevent fluid flow from the first port to the second port, to a second open position in which the poppet is spaced apart from the sealing member and fluid is permitted to flow from the first port to the second port. The valve also has a piezoelectric actuator engaged with the poppet and effective to move the poppet from the first closed position to the second open position. Methods of use of the valve are also disclosed.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 23, 2018
    Assignee: Marotta Controls, Inc.
    Inventors: Krzysztof Kluz, Joseph Youssef
  • Patent number: 10021808
    Abstract: A vent assembly in an electronic device is described. The vent assembly may regulate air into and out of the electronic device. The vent assembly may include multiple layers of material bonded together, with each layer having a flap (or flaps) that combines with another flap to form a valve. The vent assembly may include a first layer bonded with a second layer. The first layer includes a first flap, and the second layer includes a second flap that combines with the first flap to form a first valve that regulates air out of the electronic device. The vent assembly can include a third layer. Then, the second layer includes a third flap, and the third layer includes a fourth flap that combines with the third flap to form a second valve that regulates air into the electronic device. In some instances, each valve may permit airflow in one direction.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: July 10, 2018
    Assignee: Apple Inc.
    Inventors: Eric N. Nyland, Michael Benjamin Wittenberg, Timothy Y. Lee
  • Patent number: 10001097
    Abstract: A fuel injection apparatus for a piston engine includes a fuel injector body in which an injector needle is provided, which injector needle is arranged to prevent or allow fuel injection flow from the injection apparatus based on the position of the injector needle. The position is effected by a pressurized control fluid so that by applying the pressurized control fluid the needle may be urged towards its closed position and by reducing the pressurized control fluid the needle may be allowed to move away from its closed position. The injection apparatus includes a flow path for the control fluid, wherein the flow path for the control fluid comprises a restriction section providing a restriction effect to the control fluid flow. The restriction section includes at least one temperature-effected member providing a temperature-dependent restriction effect.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: June 19, 2018
    Assignee: WARTSILA FINLAND OY
    Inventors: David Jay, Holmer Slocinski
  • Patent number: 9976673
    Abstract: A miniature fluid control device includes a gas inlet plate, a resonance plate and a piezoelectric actuator. The gas inlet plate includes at least one inlet, at least one convergence channel and a central cavity. A convergence chamber is defined by the central cavity. The resonance plate has a central aperture. The piezoelectric actuator includes a suspension plate, an outer frame and a piezoelectric ceramic plate. A gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber. When the piezoelectric actuator is driven and after the gas is fed into the miniature fluid control device through the inlet of the gas inlet plate, the gas is sequentially converged to the central cavity through the convergence channel, transferred through the central aperture of the resonance plate, introduced into the first chamber, transferred downwardly through the piezoelectric actuator, and exited from the miniature fluid control device.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: May 22, 2018
    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: 9786832
    Abstract: An energy harvester for converting vibration energy into electrical energy and harvesting the electrical energy includes: a base; a clamping structure which is supported by the base and is spaced apart from the base; an elastic member which is disposed between the base and the clamping structure and allows the clamping structure to be elastically moved relative to the base; and a cantilever structure including a cantilever beam having one side fixed to the clamping structure and the other side which is elastically bendable, and a mass body disposed on the cantilever beam.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: October 10, 2017
    Assignees: SAMSUNG ELECTRONICS CO., LTD., VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
    Inventors: Abdessattar Abdelkefi, Nathan Sharpes, Shashank Priya, Muhammad R. Hajj, Kyunghoon Cho, Hwiyeol Park, Jin S. Heo
  • Patent number: 9683672
    Abstract: A fluid valve for influencing a fluid flow, including a valve housing in which an actuator is accommodated which can be moved between a first and a second functional position, further including a fluid passage which extends through some regions of the valve housing and terminates at a valve seat in the valve housing, and further including a sealing means which is motion-coupled to the actuator and designed for temporarily sealing the valve seat as a function of the functional position of the actuator, wherein a plastically deformable adjustment means is assigned to and designed to act on the actuator in order to allow a position of the sealing means to be adjusted in at least one of the functional positions of the actuator, the adjustment means being designed as a positionable abutment for the actuator or for a coupling element arranged between the actuator and the sealing means for the purpose of motion-coupling.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: June 20, 2017
    Assignee: FESTO AG & CO. KG
    Inventors: Martin Maichl, Andreas Dickhoff
  • Patent number: 9623203
    Abstract: A respiratory assistance device including a pair of prongs which are airways to be attached to a user's nose, and a blower which is connected to the pair of prongs and sends air to the user's nasal cavity via the prongs. The blower is placed on and is in contact with the user's mouth. The blower includes a housing including an intake port from which gas is taken in, a flow channel through which the air taken in via the intake port flows, and a discharge port which sends the air flowing through the flow channel toward the prongs, an impeller arranged in the housing so that its front side faces the intake port, and a partition member arranged on a rear side of the impeller so that a slit is formed along an inner periphery of the housing thereby partitioning the rear side into a space where the impeller is arranged.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 18, 2017
    Assignee: METRAN CO., LTD.
    Inventors: Kazufuku Nitta, Shinichi Shiota, Masashi Higashiura
  • Patent number: 9574532
    Abstract: A valve assembly for an injection valve may include a valve body including a central longitudinal axis, the valve body having a cavity with a fluid inlet portion and a fluid outlet portion, and a chamber, with an electro-magnetic actuator unit arranged in the chamber, and a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and releasing the fluid flow through the fluid outlet portion in further positions. The valve needle is designed to be actuated by the electro-magnetic actuator unit. A bellows arranged between the valve body and the valve needle is sealingly coupled to the valve body and to the valve needle. The bellows prevents a fluid flow between the cavity and the chamber. An injection valve comprising such a valve assembly is also disclosed.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: February 21, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Licia Del Frate
  • Patent number: 9453439
    Abstract: One example method includes varying oil injection by an oil injector onto a piston of an engine to accommodate different operating conditions. For example, by adjusting oil injection, suitable cooling effects can be provided without providing additional oil that increases the amount of oil deposits in the engine. In this way, the risk of pre-ignition can be reduced.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: September 27, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: David Karl Bidner, Brad Alan VanDerWege, John Eric Rollinger, John Smiley
  • Patent number: 9423044
    Abstract: A piezoelectric valve operated by voltage and a method of manufacturing the piezoelectric valve. The piezoelectric valve includes: a valve body; a valve unit; a plate-shaped piezoelectric element; an insulation stick for insulating the piezoelectric element; an adjustment bolt attached to the valve body with the insulation stick fitted over the bolt; an elastic body elastically supporting the insulation stick; an adjustment nut tightened to the adjustment bolt for moving along the bolt by rotation of the bolt so as to displace the insulation stick and an end of the piezoelectric element by pushing the insulation stick; and an adjuster for moving the adjustment nut along the adjustment bolt by a pivoting of the adjustment bolt, thereby adjusting a pushing force of the insulation stick. The piezoelectric valve can reduce economic loss in manufactured valves because the valve flow rate can be adjusted even after assembling the valve body.
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: August 23, 2016
    Assignee: INZI CONTROLS CO. LTD.
    Inventors: Jong Dae Im, Sang Hyoun Park, Taek Seung Kim, Kwang Bok Park
  • Patent number: 9410641
    Abstract: A method of manufacturing a bending transducer having a drive element and a membrane includes providing the membrane and the drive element and applying a production signal to the drive element during a bonding of the drive element to the membrane such that the drive element is pre-stressed after the bonding, wherein the production signal is of a same kind as an operation signal to operate the bending transducer.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 9, 2016
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Herz, Martin Richter, Martin Wackerle
  • Patent number: 9364795
    Abstract: A device for separating and concentrating particles present in a fluid, including: a first microchannel, having at least one first aperture; and at least one second microchannel, having at least one second aperture, and an end is disclosed. The first microchannel surrounds part or all of the second microchannel at the end. The first microchannel and the second microchannel are connected, at the end, by at least one nanochannel, the nanochannel(s) forming a restriction between the first microchannel and the second microchannel. A cap bounds the first microchannel, the second microchannel and the nanochannel at the end. The first microchannel and the second microchannel are made in a first substrate. The first aperture and the second aperture open into a same face of this substrate. The device may be used for separating and concentrating particles of biological samples, such as viruses, DNA or synthesic molecules.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: June 14, 2016
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Koceila Aizel, Yves Fouillet
  • Patent number: 9328850
    Abstract: A microvalve includes a base plate having a surface defining an actuator cavity. A venting groove extends from a first cavity portion of the actuator cavity having a dead end region to a second cavity portion of the actuator cavity having a structure that can vent air from the microvalve. A cover plate includes a surface having an actuator cavity provided therein that includes a first cavity portion having a dead end region and a second cavity portion having a structure that can vent air from the microvalve. An intermediate plate includes a displaceable member that is disposed within the actuator cavity for movement between a closed position, wherein the displaceable member prevents fluid communication through the microvalve, and an opened position, wherein the displaceable member does not prevent fluid communication through the microvalve.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 3, 2016
    Assignee: Zhejiang DunAn Hetian Metal Co., LTD.
    Inventors: Edward Nelson Fuller, Parthiban Arunasalam, Chen Yang, Mark Luckevich, Joe Ojeda
  • Patent number: 9163743
    Abstract: A piezoelectrically driven valve and a piezoelectrically driven fluid control device are provided that may control a fluid even if the temperature of the fluid is higher than an operating temperature range of a piezoelectric actuator. The piezoelectrically driven valve includes a valve element for opening and closing a fluid passage, a piezoelectric actuator for driving the valve element by utilizing extension of a piezoelectric element, and a radiation spacer that lifts and supports the piezoelectric actuator away from the fluid passage, and radiates heat that is transferred from fluid flowing in the fluid passage to the piezoelectric actuator, and preferably further includes a support cylinder that houses and supports both of the piezoelectric actuator and the radiation spacer, wherein the support cylinder is made of a material with the same thermal expansion coefficient as that of the radiation spacer, at least at a portion for housing the radiation spacer.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: October 20, 2015
    Assignee: FUJIKIN INCORPORATED
    Inventors: Atsushi Hidaka, Kaoru Hirata, Masaaki Nagase, Nobukazu Ikeda, Ryousuke Dohi, Kouji Nishino
  • Patent number: 9146562
    Abstract: A doser valve with a seat comprising at least one axially located slot from an outer surface of the seat and at least one radial/tangential extending passage in fluid communication with the at least one axially located slot and an exit passage out of the seat.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: September 29, 2015
    Assignee: G.W. Lisk Company, Inc.
    Inventors: Gary Garcia, Jeff Tyler, Bill Crane, Rob Gardner
  • Patent number: 9120323
    Abstract: The present invention provides a liquid droplet ejecting apparatus that may cool, with a simple configuration, drive sections of piezoelectric elements. Namely, the liquid droplet ejecting apparatus has head modules that use piezoelectric elements to eject ink droplets, driver ICs that drive the piezoelectric elements, a ventilation unit that delivers dry air to the environs of the piezoelectric elements via a gas delivery passage disposed therein in order to dehumidify the environs of the piezoelectric elements, a branch tube that branches from the gas delivery passage and blows onto the driver ICs some of the air that has been delivered, and a duckbill valve that is disposed in the branch tube. Here, the ventilation unit that delivers the dry air in order to dehumidify the environs of the piezoelectric elements also cools the driver ICs, so the driver ICs can be cooled with a simple configuration.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: September 1, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Kumiko Tanaka, Masaki Kataoka, Yoshihira Rai, Hiroshi Shibata
  • Patent number: 9118262
    Abstract: A method for controlling a displacement in the thickness direction of the contraction-type gel actuator having an effect of contraction in the thickness direction by applying a voltage between an anode and a cathode between which a gel which includes a dielectric polymeric material is interposed, which includes performing feedback control of an applied voltage, with a sampled value of a displacement when the applied voltage acts on the contraction-type gel actuator, according to the following equation (1): E=kp(xd?x)+Ed??(1) In the equation, xd represents a target displacement of the contraction-type gel actuator; Ed represents an applied voltage with respect to the target displacement xd obtained by the linear approximation of the applied voltage and the displacement from a measured result of the displacement in accordance with the applied voltage of the contraction-type gel actuator; and kp represents a proportional gain.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: August 25, 2015
    Assignee: SHINSHU UNIVERSITY
    Inventors: Minoru Hashimoto, Minami Shibagaki
  • Patent number: 9097359
    Abstract: A piezoelectric valve whose assembly work can be efficiently performed. A piezoelectric valve according to this invention includes a valve main body having a gas pressure chamber which receives compressed gas supplied from the outside, a plate which is disposed inside the valve main body and is fixed to the valve main body, and actuators each of which has a valve element, a piezoelectric element generating, in the form of a displacement, driving force required for operation of the valve element, and a displacement magnification mechanism for magnifying a displacement of the piezoelectric element and causing the magnified displacement to act on the valve element, are fixed to each of two surfaces of the plate, and are disposed inside the valve main body together with the plate.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: August 4, 2015
    Assignees: SATAKE CORPORATION, MECHANO TRANSFORMER, KURODA PNEUMATICS, LTD.
    Inventors: Takafumi Ito, Sze Keat Chee, Takeshi Yano, Takeshi Kamima, Toshitada Hirata, Toshiro Higuchi
  • Patent number: 9032996
    Abstract: A shaft sealing device switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because no abrasion accompanies movement of a sealing material or a sealing member, enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion disposed in a device body, and flow passages disposed in the shaft sealing portion for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: May 19, 2015
    Assignee: KITZ CORPORATION
    Inventors: Kazuhiro Aoki, Tomoya Yamasaki, Chikashi Gomi
  • Patent number: 9027903
    Abstract: Power-efficient actuator apparatus and methods. In one exemplary embodiment, the actuator assembly utilizes a shape memory alloy (SMA) filament driven by an electronic power source to induce movement in the underlying assembly to actuate a load (e.g., water valve). In addition, a circuit board is included which allows the actuator assembly to be readily incorporated or retrofit into a wide range of systems such that the signal characteristics of the supply line can, among other applications, be conditioned in order to protect the SMA filament. Furthermore, the circuit board can also readily be adapted for use with “green” power sources such as photovoltaic systems and the like. Methods for manufacturing and utilizing the aforementioned actuator assembly are also disclosed.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: May 12, 2015
    Assignee: Autosplice, Inc.
    Inventors: Chaitanya Arekar, Leonid Foshansky, Kyle James Ovard, Jr., Robert Bogursky, George Marc Simmel
  • Publication number: 20150101610
    Abstract: A respiratory assistance device 10 includes: a mask 13 having an expiratory hole 13a; an expiratory valve 15 provided in the mask 13, for opening and closing the expiratory hole 13a; and a control unit 17 for performing overall control on the entire device. The mask 13 and the expiratory valve 15 together form an opening and closing device. The expiratory valve 15 is deformable by deformation of a piezo element 15a. The expiratory valve 15 is disposed on an inner surface 13f so that a deformation direction thereof, i.e., a thickness direction thereof, extends along the inner surface 13f of the mask 13 and a side surface 15m slides along the inner surface 13f by the deformation thereof.
    Type: Application
    Filed: April 15, 2013
    Publication date: April 16, 2015
    Applicant: Metran Co., Ltd.
    Inventor: Kazufuku Nitta
  • Publication number: 20150102241
    Abstract: 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.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 16, 2015
    Applicant: ROBERT BOSCH GMBH
    Inventor: Thomas Sebastian
  • Patent number: 8985149
    Abstract: A valve device is formed with a through-channel and a field generating device. A fluid which can be influenced by a field is provided in the through-channel and the field generating device is configured to act on the field-influenced fluid in the through-channel by way of a field. At least one adjustment device is provided with which the field that is active in the through-channel can be adjusted. A portion of the cross-sectional area of the through-channel can be adjusted, the portion being exposed to a field of a specific intensity so that the through-channel can also only partly be exposed to a field of a specific intensity. Thus, the through-channel, as seen in the direction of the flow, can be divided into regions of different flow resistance, whereby characteristic curves, which were previously attained only with difficulty, are easily obtained when using the valve device in a damper, for example.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: March 24, 2015
    Assignee: Inventus Engineering GmbH
    Inventors: Stefan Battlogg, Juergen Poesel, Gernot Elsensohn
  • Patent number: 8979065
    Abstract: A piezoelectric valve has a body with an input passage and an output passage each configured to connect to a fluid flow system, a flow control member movable with respect to the valve seat between a fully open position and a closed position and a piezoelectric motor directly connected to the flow control member. The piezoelectric motor has a piezoelectric resonator in which two orthogonal vibrational modes across a length and a width of the piezoelectric resonator are excited, a working element and one or more contact sites providing frictional contact between the working element and the piezoelectric resonator. One of the working element and the piezoelectric resonator is connected to the flow control member and configured to move relative to the other of the working element and the piezoelectric resonator due to the frictional contact, thereby moving the flow control member.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 17, 2015
    Inventors: Valentin Zhelyaskov, Mark Oudshoorn, Serhiy Petrenko
  • Patent number: 8973893
    Abstract: A method for determining the actual start of injection is performed by an actuating device for a piezo fuel injection valve and includes the following steps. First, a test injection is carried out with such a short actuation duration that a start of shut-off takes place at a time so early that the nozzle needle does not reach the open end position. Said time is predefined by the actuation and is therefore precisely known. Next, the closing time of the nozzle needle is then determined by measurement and evaluation of an electrical variable of the piezo direct drive. Once the closing time and the time of the start of shut-off are known, the actual start of injection is calculated back from the closing time via the start of shut-off. This permits an adequately precise determination of the actual injection quantity in almost every operating state of the internal combustion engine.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: March 10, 2015
    Assignee: Continental Automotive GmbH
    Inventors: Steffen Lehner, Manfred Kramel, Hans-Jörg Wiehoff, Nicolas Nozeran, Peter Matthias Ruβe
  • Publication number: 20150060337
    Abstract: A piezoelectric valve stably supplies gas even for a long gas ejection time, with a high responsivity to opening the valve, is provided. The piezoelectric valve, including a gas-pressure-chamber for receiving a compressed gas supplied from outside, a gas-discharge-channel through which the compressed gas is discharged from the gas-pressure-chamber, comprises: a valve body disposed in the gas-pressure-chamber and opens/closes the gas-discharge-channel; a piezoelectric element for producing a driving force to move the valve body as a displacement; a displacement-enlarging-mechanism for enlarging the displacement of the piezoelectric element to act on the valve body; and a driving unit having a signal-generating-unit for generating a signal comprising a pre-pulse and a main pulse and provides the signal generated by the signal-generating-unit to a driving circuit as an input signal to apply a driving voltage to the piezoelectric element to make the piezoelectric element expand and drive the valve body open.
    Type: Application
    Filed: April 16, 2013
    Publication date: March 5, 2015
    Applicant: Satake Corporation
    Inventors: Takafumi Ito, Teruhiko Takeuchi, Tadashi Matsushita, Sze Keat Chee, Takeshi Yano, Takeshi Kamima, Toshiro Higuchi
  • Publication number: 20150028238
    Abstract: A valve assembly for switching and/or regulating a medium flow of an aerospace engine includes a drive, a valve and a flexible separator element. The drive includes one or more electrically actuatable actuators, which change their length in the direction of a longitudinal axis of the valve assembly when a control voltage is applied to the actuators. The valve includes a valve piston, which can be moved back and forth along the longitudinal axis by the drive and which has a valve member. The flexible separator element delimits a working space of the valve from the drive, as a result of which the medium, which flows through the valve or is present in the working space, is hermetically separated from the drive.
    Type: Application
    Filed: July 28, 2014
    Publication date: January 29, 2015
    Inventors: Stephan KRAUS, Thomas MAIER
  • Patent number: 8931511
    Abstract: A valve device is provided with a contraction-type high polymer gel actuator which laminates slab-like negative plates and mesh-like positive plates alternately and interleaves high polymer gel between each negative plate and each positive plate, and with a first and a second valve mechanisms driven by the gel actuator. The direction of deformation of expansion and contraction of the high polymer gel actuator is the same as the driving direction of the first valve mechanism and perpendicular to the driving direction of the second valve mechanism. The valve device is composed in such a way as to switch opening and closing of a first fluid passage and a second fluid passage simultaneously by means of deformation of expansion and contraction by controlling voltage applied to the high polymer gel actuator. This allows to compose a valve device that can open and close plural oil passages at an identical timing.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: January 13, 2015
    Assignee: Honda Motor Co., Ltd
    Inventors: Naoki Yajima, Tatsuhiro Tomari, Minoru Ueno
  • Publication number: 20140374634
    Abstract: A flow control apparatus and a program are disclosed herein. A flow control apparatus includes a piezoelectric element coupled to a valve element configuring a flow regulating valve and that works the valve element to regulate a flow, a driving circuit that applies a voltage to the piezoelectric element to drive the piezoelectric element, an accepting means for accepting a target flow, and an output means for outputting a signal corresponding to the voltage applied to the piezoelectric element to the driving circuit, to change the flow so as to coincide with the target flow. When the target flow is changed, the output means transiently outputs a signal corresponding to a voltage value different from a target voltage value corresponding to the target flow after the change, and then the output means outputs a signal corresponding to a voltage change converging at the target voltage value.
    Type: Application
    Filed: January 31, 2013
    Publication date: December 25, 2014
    Inventors: Haruaki Ohtsuki, Masashi Sonoda
  • Publication number: 20140377091
    Abstract: A pump devoid of mobile mechanical parts and including a tank with a sleeve for dispensing fluid that remains fully open, but of which an inside capillary is too thin to allow for dispensing of fluid when idle. Recourse is therefore made to a resonator device with a piezoelectric exciter, that produces vibrations, in particular bending, of the sleeve to oblige the fluid to flow through it at a determined flow rate that depends on characteristics of the pump and of excitation. The assembly can be miniaturized and used as an implantable device, for example for treatment of hearing pathologies, to deliver a drug, or, in certain embodiments, also take samples of ambient fluid. A remote energy supply is possible.
    Type: Application
    Filed: September 21, 2012
    Publication date: December 25, 2014
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventors: Elisabeth Delevoye, Jean-Pierre Nikolovski
  • Publication number: 20140374633
    Abstract: A microvalve includes a base plate including a surface, a recessed area provided within the surface, a first fluid port provided within the recessed area, and a first sealing structure extending about the first fluid port. The microvalve also includes a cover plate including a surface, a recessed area provided within the surface, a second fluid port provided within the recessed area, and a second sealing structure extending about the second fluid port. An intermediate plate is disposed between the base plate and the cover plate and includes a displaceable member that is movable between a closed position, wherein the displaceable member cooperates with the sealing structures to prevent fluid communication between the fluid ports, and an opened position, wherein the displaceable member does not cooperate with at least a portion of the sealing structures to prevent fluid communication between the fluid ports.
    Type: Application
    Filed: June 24, 2014
    Publication date: December 25, 2014
    Applicant: ZHEJIANG DUNAN HETIAN METAL CO., LTD.
    Inventors: Edward Nelson Fuller, Parthiban Arunasalam, Chen Yang, Mark Luckevich, Joe Ojeda
  • Patent number: 8915261
    Abstract: A pressure control apparatus for a supercritical fluid according to the present invention includes: a valve comprising; a valve chamber provided in a midway of a channel through which a supercritical fluid passes; and an electrically-operated valve element located in the valve chamber; a pressure detection member for detecting the pressure of the supercritical fluid in the channel on an upstream or downstream side of the valve chamber; an open/close control member for controlling the pressure detected by the pressure detection member to be a target pressure; and a valve-opening rate adjustment member for adjusting the valve-opening rate when the valve is opened based on the state of the supercritical fluid.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: December 23, 2014
    Assignee: Jasco Corporation
    Inventors: Takeshi Kanomata, Kazuharu Okubo, Seiji Horioka
  • Publication number: 20140367596
    Abstract: A method and apparatus for self-calibrating control of gas flow. The gas flow rate is initially set by controlling, to a high degree of precision, the amount of opening of a flow restriction, where the design of the apparatus containing the flow restriction lends itself to achieving high precision. The gas flow rate is then measured by a pressure rate-of-drop upstream of the flow restriction, and the amount of flow restriction opening is adjusted, if need be, to obtain exactly the desired flow.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Adam J. Monkowski, James MacAllen Chalmers, Jialing Chen, Tao Ding, Joseph R. Monkowski
  • Patent number: 8900118
    Abstract: An implantable device controls the movement of fluid to an inflatable portion of a gastric band. The implantable device includes a body. The body has an inlet, an outlet and a valve seat positioned between the inlet and the outlet. The body defines a fluid passage from the inlet to the outlet. The implantable device also includes a diaphragm. The diaphragm has one or more edges coupled to the body. The diaphragm is made of an elastomeric material and capable of being moved between a closed position that blocks the valve seat and does not allow the fluid to move from the inlet to the outlet and an open position that does not block the valve seat and allows the fluid to move from the inlet to the outlet.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: December 2, 2014
    Assignee: Apollo Endosurgery, Inc.
    Inventors: Janel A. Birk, Robert E. Hoyt, Jr., Sean Snow
  • Publication number: 20140333703
    Abstract: A micro-valve includes an orifice plate including an orifice and a cantilevered beam coupled in spaced relation to the orifice plate and moveable between positions where the orifice is closed and opened by the cantilevered beam. The cantilevered beam includes one or more piezoelectric layers that facilitate bending of the cantilevered beam in response to the application of one or more electrical signals to the one or more piezoelectric layers. In response to respective application and termination of the one or more electrical signals to the one or more piezoelectric layers the cantilevered beam either: moves from a starting position spaced from the orifice plate toward the orifice plate and returns back to the starting position spaced from the orifice plate; or moves from a starting position adjacent the orifice plate away from the orifice plate and returns back to the starting position adjacent the orifice plate.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 13, 2014
    Applicant: Matthews Resources, Inc.
    Inventors: William A. Buskirk, Steven E. Flego, Charles C. Haluzak, Brian Dunn, Paul Jensen, Charles Gilson, Thomas E. Kimerling, Glenn J. T. Leighton
  • Publication number: 20140312252
    Abstract: A valve for metering a fluid (liquid or gaseous medium), in particular, a fuel injector for internal combustion engines, having a valve housing, an actuator accommodated in the valve housing and acting on a valve member, an electrical connector accessible on the outside of the valve housing, and an electrical supply lead that produces an electrical connection from the connector to the actuator and has two lead strands, each having a flexible strand section.
    Type: Application
    Filed: July 10, 2012
    Publication date: October 23, 2014
    Inventors: Dietmar Schmieder, Thomas Sebastian
  • Patent number: 8851103
    Abstract: The present disclosure provides a mini-scale microfluidic valve including a valve housing disposed at a fluid dispensing orifice of a mini-scale microfluidic system dispensing nozzle. The valve housing comprises a base member having a base member orifice that aligns with the fluid dispensing orifice to provide a fluid dispensing pathway through which a system-fluid is dispensed from the system dispensing nozzle to an external ambient environment. The housing additionally comprises an open valve channel exposed to the external ambient environment and intersecting the fluid dispensing pathway. The valve further includes a liquid-film movably disposed within the open valve channel such that the liquid-film is exposed to the external ambient environment. The liquid-film comprises a substantially non-volatile, immiscible liquid, and a valve control subsystem structured and operable to control movement of the liquid-film within the open valve channel to selectively cover and uncover the base member orifice.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 7, 2014
    Assignee: The Curators of the University of Missouri
    Inventor: Jae Wan Kwon
  • Patent number: 8814134
    Abstract: The invention relates to a piezoelectric drive, in particular for microvalves. The drive comprises a deformation layer coupled on one side to a piezoelectric layer, which is provided with at least one pair of electrodes, made of two electrodes of opposite polarities, to provide electricity. According to the invention, both electrodes of opposite polarities of the pair of electrodes are arranged together on the side of the piezoelectric layer facing away from the deformation layer. The invention also relates to a microvalve comprising at least one valve channel and a membrane that opens or closes the valve channel, where the membrane simultaneously forms the deformation layer of such a piezoelectric drive.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: August 26, 2014
    Inventors: Hubert Lachner, Michael Foerg, Norbert Schwesinger, Sebastian Pobering, Sandy Zaehringer
  • Patent number: 8800590
    Abstract: In one embodiment, a valve comprising a valve body; an orifice disposed within the valve body; a fluid flow restraining member located at a first location of the orifice, the fluid flow restraining member pivotable between a closed position and an open position; an extending member connected to, and moveable in pivotable synchronization with, the fluid flow restraining member; and a shape memory alloy element attached to the extending member and the valve body, the shape memory alloy element causing a pivotal movement of the extending member between positions corresponding to the open and closed positions responsive to a change in temperature of the shape memory alloy element.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: August 12, 2014
    Assignees: Massachusetts Institute of Technology, Chevron U.S.A. Inc.
    Inventors: Eric Wright Gilbertson, Franz Hover, Eduardo Colina, Donald Bryan Freeman
  • Patent number: 8783652
    Abstract: An apparatus for controlling liquid flow wherein the apparatus comprises an orifice and an adjacent flexible diaphragm separated from each other by a gap through which a liquid flows. The diaphragm is sufficiently flexible to vary the gap thereby controlling the rate of liquid flowing through the orifice or to provide a positive liquid shutoff of liquid flowing through the orifice. A method for controlling liquid flow through the apparatus comprises flexing said diaphragm to vary a size of the gap to control the rate of liquid flowing through the orifice or to provide a positive liquid shutoff of liquid from flowing through the orifice.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: July 22, 2014
    Assignee: MPS Corporation
    Inventors: Thuc M. Dinh, Benjamin Y. H. Liu, Yamin Ma
  • Patent number: RE46479
    Abstract: A barrier structure for use in an electrochemical stochastic membrane sensor for single molecule detection. The sensor is based upon inorganic nanopores having electrically tunable dimensions. The inorganic nanopores are formed from inorganic materials and an electrically conductive polymer. Methods of making the barrier structure and sensing single molecules using the barrier structure are also described.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: July 18, 2017
    Assignee: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Jose-Maria Sansinena, Antonio Redondo, Virginia Olazabal, Mark A. Hoffbauer, Elshan A. Akhadov
  • Patent number: RE46545
    Abstract: A barrier structure for use in an electrochemical stochastic membrane sensor for single molecule detection. The sensor is based upon inorganic nanopores having electrically tunable dimensions. The inorganic nanopores are formed from inorganic materials and an electrically conductive polymer. Methods of making the barrier structure and sensing single molecules using the barrier structure are also described.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: September 12, 2017
    Assignee: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Jose-Maria Sansinena, Antonio Redondo, Virginia Olazabal, Mark A. Hoffbauer, Elshan A. Akhadov
  • Patent number: RE46594
    Abstract: A barrier structure for use in an electrochemical stochastic membrane sensor for single molecule detection. The sensor is based upon inorganic nanopores having electrically tunable dimensions. The inorganic nanopores are formed from inorganic materials and an electrically conductive polymer. Methods of making the barrier structure and sensing single molecules using the barrier structure are also described.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 31, 2017
    Assignee: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Jose-Maria Sansinena, Antonio Redondo, Virginia Olazabal, Mark A. Hoffbauer, Elshan A. Akhadov