Diaphragm Patents (Class 251/331)
  • Patent number: 10422435
    Abstract: A diaphragm valve including an axially driven valve spindle provides a pressure member, which allows to directly couple the diaphragm to the valve spindle. The same pressure member may always be used for coupling, irrespectively of the type of fastener, which is integrated in the diaphragm.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: September 24, 2019
    Assignee: BUERKERT WERKE GMBH & CO. KG
    Inventors: Ralf Kettemann, Marcel Konstandin
  • Patent number: 10344876
    Abstract: An oblong diaphragm valve has curved surfaces carved into faces of a body and a plate. The curved surfaces have an oblong shape and define an oval or egg-shaped valve chamber when the body and the plate are joined and secured to each other, with a diaphragm sandwiched there-between. An inlet and an outlet are defined in the curved surface of the body at opposite ends defined by a length of the valve chamber. A flow passage is defined in the curved surface of the plate and has an opening centrally located relative to the valve chamber for actuation of the diaphragm to close or open the oblong diaphragm valve with minimal or no stress, ensuring durability and longevity of the oblong diaphragm valve with increased precision, while reducing fluid waste and pressure spikes in pumping operations.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: July 9, 2019
    Assignee: Entegris, Inc.
    Inventor: Iraj Gashgaee
  • Patent number: 10330094
    Abstract: Described is a method for manufacturing a diaphragm assembly through the use of injection molding. The method can avoid the use of PTFE as a chemically resistant coating. Further, the method can increase overall adherence of a polymer diaphragm to an insert through the use of an interference surface on at least the surface of a head of the insert.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: June 25, 2019
    Assignee: Blue-White Industries, Ltd.
    Inventors: Robert E. Gledhill, III, John T. Nguyen, Steve L. Smith
  • Patent number: 10323757
    Abstract: Provided is a diaphragm valve in which seat leak occurrence is drastically decreased. A depression 14 is provided at a radially middle part of a top of the seat 11. A first seal portion 17 is provided between a diaphragm 6 and a radially inward part 15 of the top of the seat 11. A second seal portion 18 is provided between a diaphragm 6 and a radially outward part 16 of the top of the seat 11. An outer circumferential surface 14b of the depression 14 has a cylindrical surface.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: June 18, 2019
    Assignee: FUJIKIN INCORPORATED
    Inventors: Tomohiro Nakata, Tsutomu Shinohara, Michio Yamaji
  • Patent number: 10315939
    Abstract: A diaphragm valve includes a valve body, a valve assembly disposed to seal the valve cavity and including a diaphragm and a valve seat retained with a seat carrier, a threaded member assembled with the valve body, and a valve actuator assembled with the valve body and operable to move a surface of the diaphragm into and out of contact with the valve seat. The valve body includes a valve cavity, a first port and a second port, with the first port and the second port being open to the valve cavity. The threaded member includes an annular bead that directly contacts the diaphragm to apply a compressive load to the diaphragm against a first side of the seat carrier. The valve actuator is separate from the threaded member, and is removable from the valve body without removing the threaded member from the valve body.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: June 11, 2019
    Assignee: Swagelok Company
    Inventor: William H. Glime
  • Patent number: 10145479
    Abstract: Provided is a diaphragm valve that is capable of increasing its flow rate and is capable of suppressing variation among the diaphragm valves in the flow rates. In a diaphragm valve 1, a fluid that has flown into the fluid inflow channel 2a enters a fluid outflow channel 2b via through holes 22a of a seat holder 5. On a bottom surface 13 of a depression 2c of a body 2, a seat receiving surface 13a that receives a seat 4 is flush with a seat-holder receiving surface 13b that receives a seat holder 5. In the bottom surface of the depression 2c of the body 2, an annular groove 14 facing through holes 22 of the seat holder 5 is formed.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: December 4, 2018
    Assignee: FUJIKIN INCORPORATED
    Inventors: Taichi Kitano, Hidenori Kiso, Tsutomu Shinohara
  • Patent number: 10132415
    Abstract: Provided is a fluid controller which enables precise flow-rate adjustment while securing the durability. The fluid controller includes a stem vertical-movement-amount upper-limit-value setting means 10 which sets an upper limit value of a vertical movement amount of a stem 8 associated with opening and closing operations. The fluid controller further includes a stem vertical-movement-amount fine-adjustment means 11 which changes the vertical movement amount of the stem 8 associated with the opening and closing operations, within a range of not greater than the upper limit value.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: November 20, 2018
    Assignee: FUJIKIN INCORPORATED
    Inventors: Tsuyoshi Tanikawa, Michio Yamaji, Tadayuki Yakushijin, Keisuke Ishibashi, Yasumasa Yanagida
  • Patent number: 9777847
    Abstract: The invention concerns a circuit comprising a bag (11) comprising two flexible films (45, 46) and a press (10) comprising a first (14) and a second (13) shell clamping the bag to form pipes having a passage and edges (41); the first shell comprising a valve (20) which comprises a movable member (24) and a pad (31), which pad has a resting configuration in which a second face (33) of the pad is concave and locally delimits a channel (18) and a pinching configuration in which the second face (33) is convex; said movable member and said pad being configured so that, when said valve is in closed position and said pad in pinching configuration, said passage is pinched by said movable member against said second shell channel and said edges (41) are pinched flat by said movable member against said second shell (13).
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: October 3, 2017
    Assignee: EMD Millipore Corporation
    Inventors: Ronald Tuccelli, Sebastien Cirou, Virginie Buisson, Christine Abouayad El Idrissi, Jim Kelly
  • Patent number: 9772038
    Abstract: An intermediate piece for a stop valve, in particular a membrane valve, for fluids including a pressure piece. The pressure piece has at least two locking slides for locking a locking member of a closure element. The intermediate piece includes a cylinder in which the pressure piece can be guided in axial manner. The intermediate piece has a recess, which is arranged in such a way that in mounting position of the pressure piece the locking slide can be shifted into the recess, thus releasing the locking member.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: September 26, 2017
    Assignee: GEMÜ Gebr. Müller Apparatebau GmbH & Co., Kommanditgesellschaft
    Inventors: Jochen Steigert, Zeno Schuler
  • Patent number: 9677675
    Abstract: The invention concerns a circuit comprising a bag (11) comprising two flexible films (45, 46) and a press (10) comprising a first (14) and a second (13) shell clamping the bag to form pipes having a passage and edges (41); the first shell comprising a valve (20) which comprises a movable member (24) and a pad (31), which pad has a resting configuration in which a second face (33) of the pad is concave and locally delimits a channel (18) and a pinching configuration in which the second face (33) is convex; said movable member and said pad being configured so that, when said valve is in closed position and said pad in pinching configuration, said passage is pinched by said movable member against said second shell channel and said edges (41) are pinched flat by said movable member against said second shell (13).
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: June 13, 2017
    Assignee: EMD Millipore Corporation
    Inventors: Ronald Tuccelli, Sebastien Cirou, Virginie Buisson, Christine Abouayad El Idrissi, Jim Kelly
  • Patent number: 9599243
    Abstract: A pressure relief valve having a housing with an inlet port, an outlet port and a curvilinearly extending housing interior sidewall that defines a flow passageway through the housing from the inlet port to the outlet port. A piston assembly that is moveable between a closed position to establish a fluid-tight seal between the inlet port and the outlet port, and an open position to permit fluidic flow of pressurized fluid from the inlet port to the outlet port. The piston assembly has a piston head having a parabolically shaped piston face and elliptical perimeter that, when the inlet piston assembly is moved to the open position, aligns with the housing interior sidewall to provide a continuous transition from a position immediately upstream of the piston to a position immediately downstream of the piston.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: March 21, 2017
    Assignee: Taylor Innovations, LLC
    Inventors: Julian S. Taylor, Bryce A. Bell
  • Patent number: 9587759
    Abstract: Apparatus is provided featuring a spindle having extending spindle portions configured with spindle glands; a compressor having extending compressor portions configured with compressor glands, and a snap ring configured to engage the spindle glands and the compressor glands in order to attach the spindle and compressor together, so that the compressor may be quickly released from the spindle by releasing an engagement between the snap ring, the spindle glands and/or the compressor glands.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: March 7, 2017
    Assignee: ITT MANUFACTURING ENTERPRISES LLC
    Inventors: Louis E. Matalon, Michael D. Yoder
  • Patent number: 9512946
    Abstract: A joint that connects pipelines, a pipeline with a fluid control device, or a pair of fluid control devices is provided therein with a pipe functional component. Examples of the pipe functional component include various valves such as a diaphragm valve, a check valve, a branch valve, a relief valve, a ball valve and a bellows valve, or a filter.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: December 6, 2016
    Assignee: IHARA SCIENCE CORPORATION
    Inventor: Susumu Karasawa
  • Patent number: 9476510
    Abstract: A diaphragm valve has a valve housing and a valve member movable relative to said housing. The valve member includes a diaphragm carrier that can be driven to execute a switchover motion having a sealing diaphragm mounted thereon, which delimits a valve chamber in which a valve seat is found. The sealing diaphragm has a sealing section opposite said valve seat belonging at least partially to a loose diaphragm section of the sealing diaphragm, which can lift from the diaphragm carrier to reduce the stress on the sealing diaphragm when said diaphragm carrier is removed from the valve seat during switching.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 25, 2016
    Assignee: FESTO AG & CO. KG
    Inventor: Andreas Buhler
  • Patent number: 9441742
    Abstract: A membrane valve for fluid media, comprising a valve body, a membrane, a pressure piece, and a drive) for the pressure piece. The membrane is coupled to the pressure piece by a connecting element, having a wall which projects from the membrane in the direction of the pressure piece. A latching hook laterally protrudes from one side and a free space is provided on the other side such that the wall. The latch hook can be deflected in order to connect the latching hook to a corresponding receiving portion on the pressure piece. A stationary pin engages into the free space when the membrane is raised from the valve seat of the valve body and protrudes out of the free space when the membrane is resting on the valve seat.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 13, 2016
    Assignee: GEMÜ Gebr. Müller Apparatebau GmbH & Co. Kommanditgesellschaft
    Inventors: Fritz Müller, Raphael Flaig
  • Patent number: 9435490
    Abstract: A microfluidic valve operable to semi-permanently close a channel of a microfluidic device defined between a thermoplastic elastomer (TPE) film and a substrate operates employs a surface contact bond between the TPE and a wall of the channel. Thermomechanical release of the valve, tristate functionality, and repeated semi-permanent closure and release are demonstrated.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: September 6, 2016
    Assignee: National Research Council of Canada
    Inventors: Jean-Christophe Galas, Emmanuel Roy, Teodor Veres
  • Patent number: 9423043
    Abstract: A valve body arrangement for a hydraulic or pneumatic valve comprises two elements between which a valve body is retained. The two elements are welded together in a first region, preferably by the laser transmission method, and clamp the valve body in a second region with a force.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: August 23, 2016
    Assignee: Rausch & Pausch GmbH
    Inventors: Frank Perner, Tino Zeidler, Herwig Greiner, Werner Schieweck
  • Patent number: 9416893
    Abstract: There is provided a fluid controller actuator which does not require a plurality of bolts for fixing an inner side spring presser to a casing, in which a configuration is simple and a biasing force of an biasing member can be adjusted from the outside after the assembly. An inner side spring presser includes a shaft portion and a cylinder portion provided at a lower edge portion of the shaft portion, and presses an upper side peripheral edge portion of a through hole of a biasing member by a lower end of the cylinder portion. The shaft portion penetrates an outer side spring presser and extends upwardly. An adjustment screw which positions the inner side spring presser as a lower end abuts against an upper surface of the shaft portion of the inner side spring presser, is screwed to a top wall of a casing.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: August 16, 2016
    Assignee: FUJIKIN INCORPORATED
    Inventors: Tadayuki Yakushijin, Michio Yamaji, Tsuyoshi Tanikawa, Keisuke Ishibashi, Shinichiro Sasaki
  • Patent number: 9328829
    Abstract: A two-way valve includes a valve body made of a resilient member and connected to a lower end of a shaft. The valve body is made up from a main body portion having an axial member connected to the shaft, and a thin film skirt portion formed on an outer circumferential side of the main body portion. An outer edge of the skirt portion is sandwiched and gripped between a small diameter part of a housing and a connector of a body. Further, lips that project in a downward direction are formed in a central portion of the main body portion. The lips are seated on a top portion of a partition wall in the body, so that the two-way valve is placed in a valve-closed state.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: May 3, 2016
    Assignee: SMC KABUSHIKI KAISHA
    Inventors: Yoshihiro Fukano, Tadashi Uchino, Yasunori Suzuki
  • Patent number: 9243718
    Abstract: A weir-type diaphragm valve includes a valve body having a spherically-shaped valve body sealing surface with a weir having a spherically-shaped weir sealing surface; and a diaphragm having a diaphragm sealing surface with a diaphragm weir sealing surface, the diaphragm responding to an applied force and providing sealing contact between the diaphragm weir sealing surface and the spherically-shaped weir sealing surface so as to stop the flow of fluid through a fluid flow channel of the valve body.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 26, 2016
    Assignee: ITT MANUFACTURING ENTERPRISES LLC.
    Inventors: Louis E. Matalon, Paul S. Gifford
  • Patent number: 9218944
    Abstract: A plasma reactor has an array of passages extending through its workpiece support pedestal from a bottom thereof that forms a two-dimensional array of openings in the support surface. The reactor further includes a plurality of optical fibers, each fiber extending through a respective one of the passages. Optical sensing apparatus is coupled to the output ends of the optical fibers and is responsive in the range of wavelengths. The reactor further includes a tunable element capable of changing a two-dimensional etch rate distribution across the surface of a workpiece supported on the pedestal, and a process controller connected to receive information from the optical sensing apparatus and to transmit control commands to the tunable element.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: December 22, 2015
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Madhavi R. Chandrachood, Michael N. Grimbergen, Khiem K. Nguyen, Richard Lewington, Ibrahim M. Ibrahim, Sheeba J. Panayil, Ajay Kumar
  • Patent number: 9115813
    Abstract: This invention provides a fluid control device which is capable of visually recognizing its opening and closing states with a simple configuration. The casing 3 is formed so as to be opened upward. The piston 8 is disposed at an upper end portion of a valve rod 7 such that a piston upper end portion is exposed from an opening of the casing 3 when the valve rod 7 is located at the upper position.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: August 25, 2015
    Assignee: FUJIKIN INCORPORATED
    Inventors: Takashi Hirose, Hiroshi Ogawa, Toshihide Yoshida, Kohei Shigyou
  • Patent number: 9109707
    Abstract: A seal assembly 10 includes an attachment stud 11, a reinforcing mesh 12, a rigid carrier 13, an elastomeric body 14, and an elastomeric film 15, each having a longitudinal axis 16. The carrier 13 includes an inner peripheral surface 31 defining a central opening 33 and an outer peripheral surface 32. A lateral surface 35 of the carrier 13 extends between the peripheral surfaces. Corner towers 38 and intermediate towers 39 are arranged along the outer peripheral surface 32. The towers are spaced apart by openings 40 and terminate in control surfaces 41. The body 14 includes a stationary portion 47 generally aligned with the carrier 13 and a diaphragm portion 48 generally aligned with the opening 33. The film 15 extends over and is bonded to the body portion 14 and the towers 38, 39 to provide a smooth uninterrupted chemically resistant surface for the seal assembly 10.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: August 18, 2015
    Assignee: Parker-Hannifin Corporation
    Inventor: Nigel S. Goulding
  • Patent number: 9068664
    Abstract: A hydraulic control valve actuated by a diaphragm's integral spring whose thicker part acts with greater force to close the diaphragm and plug unit of the valve and whose thinner part may complete the closing motion so that the integral spring may weaken faster than linearly in relation to displacement of the diaphragm and plug unit. A snap seat supporting the plug may include a seat portion and a grip skirt portion integrally joined at an acute angle. A bracket and sliding guide may guide a helical rotor touching an indicator. Movement of the diaphragm and plug unit may rotate the helical rotor and the indicator without the indicator rising out of the valve. The cover may have an internal control passage in communication with a base of the valve to allow the cover to be installed horizontally and vertically conveniently and without disconnecting the control tubing above the valve.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: June 30, 2015
    Assignee: BERMAD CS LTD.
    Inventor: Zvi Weingarten
  • Patent number: 9061876
    Abstract: A faucet for controlling the dispensing of liquids includes a valve body having a valve chamber with an inlet and an outlet. A valve element is located in the valve chamber and is movable from a first position for blocking flow between the inlet and outlet to a second position for permitting flow between the inlet and the outlet. An operating stem has an inner end operatively connected to the valve element and an outer end located external to the body. A bonnet is included, and an insert member is rotatably connected to the bonnet and defines an opening through which the stem extends. The bonnet and insert member are secured to the body and enclose the valve element in the valve chamber. The insert is located such that no portion of the insert member is clamped between the bonnet and the body.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: June 23, 2015
    Assignee: THE MEYER COMPANY
    Inventors: Michael H. Meyer, Michael A. Kolar, Eric J. McCarty
  • Publication number: 20150129791
    Abstract: A valve apparatus is equipped with a diaphragm disposed displaceably in the interior of a body, and which opens and closes a fluid passage by separating away from and being seated on a valve seat, a conductive shaft arranged in a through hole that is formed substantially in the center of the diaphragm, and a grounding member for grounding the conductive shaft. Each of the body and the diaphragm is formed from a non-conductive material, and one end surface of the conductive shaft is exposed to the fluid passage.
    Type: Application
    Filed: July 22, 2014
    Publication date: May 14, 2015
    Applicant: SMC Corporation
    Inventors: Yuzuru OKITA, Tetsuro Maruyama
  • Patent number: 9022347
    Abstract: A disc for use in a pneumatic valve includes a stiffening insert encased in a flexible body. The stiffening insert acts to protect a central actuation region of the disc against radial compression, which may arise if the disc is used to seal against a bore hole, and against material flow towards the actuation region away from a clamped periphery. The behavior of the disc in a valve assembly is therefore more predictable and reproducible. The flexible body may further be tensioned across the stiffening insert.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: May 5, 2015
    Assignee: Concept 2 Manufacture Design OCD Ltd
    Inventor: Andrew Tatarek
  • Publication number: 20150115191
    Abstract: A diaphragm valve which can solve problems of a disc-shaped diaphragm, wherein the amount of deformation is significant and dust is liable to be generated, that the change in volume in opening and closing of the fluid channel is significant, and that a pressure receiving surface area of the diaphragm at the time of channel closure is provided. A diaphragm is formed of a synthetic resin and, a cylindrical portion fixedly fitted on a valve rod, a bottom wall portion closing a lower end opening of the cylindrical portion, a flange portion provided at an upper end portion of the cylindrical portion, and a projecting portion provided at a center portion of the bottom wall portion and facing an upper end opening of a fluid inlet passage. A vertical cross-sectional shape of an axially intermediate portion of the cylindrical portion is formed into a substantially arcuate shape projecting radially outward.
    Type: Application
    Filed: May 29, 2013
    Publication date: April 30, 2015
    Applicant: FUJIKIN INCORPORATED
    Inventors: Hisatoshi Akamoto, Makoto Abe, Kunio Ueda
  • Patent number: 9016307
    Abstract: A diaphragm valve has a valve body with a passage to be opened to allow fluid to pass through the valve body and to be closed to prevent fluid from passing through the valve body, and has a bonnet assembly with a pressure ring to load and unload a diaphragm based on a first spring constant to seal a peripheral portion of the diaphragm, and a compressor to close or open the passage of the valve body. The valve body and bonnet assembly have a connection that allows the valve body and bonnet assembly to be substantially fixed together with a second spring constant that is substantially higher than and independent from the first spring constant.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: April 28, 2015
    Assignee: ITT Manufacturing Enterprises LLC.
    Inventor: Louis E. Matalon
  • Publication number: 20150108257
    Abstract: Provided is a valve unit which opens/closes a flow path and includes a unit-main body having a pressure-adjustment chamber formed therein, a film sealing an opening of the pressure-adjustment chamber, a pressure-receiving plate adhered to the film, a valve body connected to the pressure-receiving plate, and a spring urging the valve body to the film. The pressure-adjustment chamber has an inlet and an outlet through which the liquid flows, a wall portion facing the pressure-receiving plate, and a first-concave portion facing the pressure-receiving plate. The inlet is opened/closed by the valve body and is provided in the first-concave portion. A gap between the wall portion and the pressure-receiving plate is smaller than that between the first-concave portion and the pressure-receiving plate. The wall portion makes the first-concave portion extend from the inlet to a side opposite to the outlet side, with respect to the inlet.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 23, 2015
    Inventor: Hiroaki OKUI
  • Publication number: 20150108386
    Abstract: A diaphragm with excellent durability is provided which can restrain occurrence of a crack resulting from up and down movements of the diaphragm with opening and closing of a flow channel of a diaphragm valve, and a diaphragm valve having this diaphragm. The diaphragm is attached to a diaphragm valve, comprising a membrane part deforming and moving up and down with opening and closing of a flow channel and a flange part which is provided around said membrane part and sandwiched between a valve body and a bonnet, wherein the diaphragm is formed in a curved surface shape where the shape before deformation of the lower surface of said membrane part descends and then ascends from an outer edge part towards a central part.
    Type: Application
    Filed: March 21, 2013
    Publication date: April 23, 2015
    Inventors: Shunji Obara, Yoshinori Shimomura, Masahiko Sogao, Keigo Kobayashi
  • Patent number: 9010729
    Abstract: A membrane valve comprising a first and a second valve housing part and a membrane clamped between the valve housing parts comprises a peripherally surrounding bead on the membrane and a thin, axially movable membrane portion adjacent thereto. The bead is supported by the two valve housing parts and is provided with an undercut at a radial inner side. Further, a membrane for installation in a membrane valve is provided.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: April 21, 2015
    Assignee: Buerkert Werke GmbH
    Inventors: Johannes Baumann, Christina Ripsam, Ralf Scheibe, Holger Schwab
  • Publication number: 20150102046
    Abstract: A fluid dispenser and dispensing valve are described, and wherein the dispensing valve includes a valve housing having a wall which defines an internal cavity, and wherein a passageway is formed through the wall of the valve housing; a valve control element is provided and which has a deformable sidewall which is placed within the valve housing in one of a plurality of possible configurations. At least a portion of the sidewall of the valve control element deforms when a vacuum is created in the internal cavity of the valve housing so as to facilitate the controllable delivery of a fluid into the valve housing. The sidewall of the valve control element has a variable thickness dimension.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 16, 2015
    Applicant: ZAK DESIGNS, INC.
    Inventor: Jeff Steininger
  • Patent number: 8998174
    Abstract: A diaphragm (20) for a diaphragm valve is described. The diaphragm (20) has a body (22) comprising a first elastomer and a resistant layer (24) comprising a second elastomer having a different composition or formulation. Diaphragms described in examples have good flexibility with a high level of chemical resistance and low surface adhesion. A fixing attachment for fixing the diaphragm in the valve is also described.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: April 7, 2015
    Assignee: James Walker & Co. Ltd.
    Inventors: Peter John Warren, Stephen Winterbottom
  • 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: 8974416
    Abstract: A disposable cassette intended for a metering pump for infusion consisting of just two components, namely, a hollow first component (1) forming a pump body, and a second component (5) collaborating with the hollow first component (1) to form a pumping zone (6) and comprising a flexible part (10) characterized in that the second component (5) further comprises a rigid part (9) secured to the flexible part (10) and able to be assembled with the hollow first component (1). The invention also relates to a method for manufacturing such a disposable cassette.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: March 10, 2015
    Inventor: Jean-Denis Rochat
  • Patent number: 8960230
    Abstract: The invention relates to a valve, in particular for a component in microfluid technology, comprising valve bodies (1, 2) which have surfaces (6, 7) intended for contact with each other and which can be moved relative to each other by displacing the contact surfaces (6, 7), wherein channels (4, 5) for the inflow and outflow of a fluid open into one (6) of the contact surfaces (6, 7) and a depression (9) for forming a connection between the channels (4, 5) is provided in the other contact surface (7). According to the invention, a flexible separating film (10), which can be stretched into the depression (9) to form the connection, is arranged between the contact surface (6, 7).
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: February 24, 2015
    Assignee: Thinxxs Microtechnology AG
    Inventor: Lutz Weber
  • Patent number: 8960644
    Abstract: In a valve seat structure of a fluid control valve comprising a valve element, a body formed with an inlet port and an outlet port, and a valve seat member provided in the body, the fluid control valve being configured to bring the valve element into or out of contact with the valve seat member to control the flow of a fluid, the valve seat member is formed in a ring shape and includes a valve seat portion with which the valve element will come into our out of contact. Assuming that a thickness of the valve seat portion in a radial direction of the valve seat member is a first thickness t1 (0<t1), a second thickness t2 corresponding to a height of the valve seat member in a direction along an axis of the fluid control valve is determined in a range of 0.5 t1?t2?1.5 t1.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: February 24, 2015
    Assignee: CKD Corporation
    Inventor: Tatsuhito Aoyama
  • Publication number: 20150041691
    Abstract: A diaphragm valve has a valve housing and a valve member movable relative to said housing. The valve member includes a diaphragm carrier that can be driven to execute a switchover motion having a sealing diaphragm mounted thereon, which delimits a valve chamber in which a valve seat is found. The sealing diaphragm has a sealing section opposite said valve seat belonging at least partially to a loose diaphragm section of the sealing diaphragm, which can lift from the diaphragm carrier to reduce the stress on the sealing diaphragm when said diaphragm carrier is removed from the valve seat during switching.
    Type: Application
    Filed: March 11, 2013
    Publication date: February 12, 2015
    Inventor: Andreas Buhler
  • Patent number: 8950421
    Abstract: A condensate drain for a compressed air system is provided. The condensate drain includes a storage unit, an opening/closing member, and an adjusting member. The storage unit collects condensate and includes a storage main body defining a storage compartment within, and a storage panel sealing one side of the storage main body. The opening/closing member is provided at a side of the storage unit, to selectively open and close a passage through which condensate drains to an outside through an opening/closing valve. The adjusting member is provided at a side and within the storage unit, to adjust the opening/closing member. The opening/closing valve can be formed of an elastic material.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: February 10, 2015
    Inventor: Woon Je Joe
  • Publication number: 20150028244
    Abstract: Embodiments include tubular diaphragm valves with a preformed mechanical closure point and optionally concave or convex convolution areas located near the flanges. These mechanical closure points and convolution areas give the embodiments an extended operational life, as compared to that of conventional cylindrical diaphragms.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: AcornVac Incorporated
    Inventors: Carlos J. Galeazzi, Neil Cletus Levers, Thomas Kent Zinn
  • Patent number: 8936764
    Abstract: The present invention provides microfluidic devices and methods using the same in various types of thermal cycling reactions. Certain devices include a rotary microfluidic channel and a plurality of temperature regions at different locations along the rotary microfluidic channel at which temperature is regulated. Solution can be repeatedly passed through the temperature regions such that the solution is exposed to different temperatures. Other microfluidic devices include an array of reaction chambers formed by intersecting vertical and horizontal flow channels, with the ability to regulate temperature at the reaction chambers. The microfluidic devices can be used to conduct a number of different analyzes, including various primer extension reactions and nucleic acid amplification reactions.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 20, 2015
    Assignee: California Institute of Technology
    Inventors: Markus M. Enzelberger, Carl L. Hansen, Jian Liu, Stephen R. Quake, Chiem Ma
  • Publication number: 20150008353
    Abstract: A fluid control valve includes: a valve housing in which a flow path having gas inlet and outlet is formed; a drive device attached to the valve housing; a valve shaft connected to an output shaft of the drive device and moving in an axial direction; and a valve body attached so as to radially extend to an axis of the valve shaft, and opening and closing the flow path by being moved with the valve shaft so that one side surface moves away from or comes into contact with a valve seat formed in the flow path, wherein the valve housing is attached to an attachment target member so that the valve shaft is tilted, and the valve body includes a wall portion corresponding to a portion where a liquid inside the flow path collects due to its weight, within a portion having the valve seat, and formed along an edge portion on the other side surface opposite to one side surface of the valve body.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventor: Nobutaka KIKU
  • Patent number: 8919733
    Abstract: A device in a valve (1) includes a valve housing (2) with at least a first (3) and a second (4) fluid port. A closure element (5) including a sealing portion (15) and diaphragm (30) is arranged in the valve housing (2). The sealing portion (15) is movable between an open position and a closed position. The closure element (5) and valve housing (2) form a flow passage (11) which communicates with the fluid ports when the sealing portion (15) leaves the closed position. A second sealing portion (14) is arranged in contact with a support portion (25) of the valve housing (2). An abutment element (16) is arranged in contact with the second sealing portion (14). The abutment element (16) transmits a force via the second sealing portion (14) toward the support portion (25) to provide a seal. The force is at least partly exerted by a spring element.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: December 30, 2014
    Assignee: Millipore Aktiebolag
    Inventors: Lennart Myhrberg, Häkan Samuelsson, Bertil Wejrot
  • 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: 20140346378
    Abstract: An improved microfluidic system with an improved microfluidic valve module is disclosed. The microfluidic system includes a microfluidic chip and one or more valve modules. The microfluidic chip has microfluidic channels and one or more cavities formed in the chip, each of the one or more cavities designed to receive one of the one or more valve modules. Each of the one or more valve modules includes a first layer, a control layer and one or more second layers. The first layer includes a deformable material. The control layer has a microfluidic control chamber formed in a portion of it. The control layer is also located adjoining the first layer and the deformable material of the first layer forms a deformable surface of the control chamber. The one or more second layers include an input microfluidic channel and an output microfluidic channel.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 27, 2014
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Chin Hock Kua, Zhenfeng Wang, Wei Fan, Cong Zhi Leon Chan, Zhiping Wang
  • Publication number: 20140326915
    Abstract: There is provided a diaphragm valve configured to prevent a body from being scratched significantly even when replacement of a seat is repeated. A body 2, a seat 4 arranged on a peripheral edge of a fluid channel 2a formed on the body 2 so as to be demountably mountable, and a seat holder 5 arranged on the body 2 so as to be demountably mountable and configured to hold the seat 4 are provided. The body 2 and the seat holder 5 are each formed of a metal. Vickers hardness of the seat holder 5 is set to be smaller than Vickers hardness of the body 2.
    Type: Application
    Filed: November 27, 2012
    Publication date: November 6, 2014
    Applicant: FUJIKIN INCORPORATED
    Inventors: Taichi Kitano, Tsutomu Shinohara, Michio Yamaji, Ryutaro Nishimura
  • Publication number: 20140319403
    Abstract: A diaphragm valve and a seat holder unit for the diaphragm valve which allows easy replacement of a seat is provided. The diaphragm valve includes a retainer configured to hold a seat holder. The seat holder is demountably arranged on a body to hold a seat. The retainer has a substantially cylindrical shape and includes an inward flange portion receiving the outer peripheral edge portion of the seat holder, and is demountably mounted on the diaphragm holding members in a state of holding the seat holder.
    Type: Application
    Filed: November 27, 2012
    Publication date: October 30, 2014
    Inventors: Taichi Kitano, Tsutomu Shinohara, Michio Yamaji, Ryutaro Nishimura
  • Patent number: 8851452
    Abstract: Plungers and plunger assemblies for a diaphragm-sealed valve are provided. Each plunger is adapted to be received in a passage of the valve body and includes a base member and an upper member having a transversal play in this passage with respect to the base member. A resilient middle element is provided between the upper and base member. The base member is connected to a plunger actuating mechanism within the valve body. The upper member may therefore be self-aligning within the passage.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: October 7, 2014
    Assignee: Mecanique Analytique Inc.
    Inventors: Yves Gamache, André Fortier
  • Patent number: 8851443
    Abstract: Actuator apparatus having a multi-stable element actuated by memory alloy actuating elements. In one embodiment, the multi-stable actuator comprises a bistable (two-state) diaphragm element adapted to alternate between two stable configurations via forces exerted on the diaphragm by more than one memory alloy filaments in response to thermal activation. The bistable diaphragm element is coupled to a magnetic actuator element resident on a dry portion of a valve fitting, while a plunger actuated by the magnetic actuator element is resident on a wet portion of a valve fitting. Methods for making and using the bistable actuator apparatus are also disclosed.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: October 7, 2014
    Assignee: Autosplice, Inc.
    Inventor: Leonid Foshansky