Diaphragm Patents (Class 251/331)
  • Patent number: 7878479
    Abstract: An adjustment valve includes a first diaphragm integrally formed from an attachment section engaged with and fixed to the bottom of a rod, a joining section to which a valve body is fixed, a thin film section radially extending from a shoulder section, a thick wall section continuous with the thin film section, and a seal section provided at the peripheral edge of the thick wall section. The second diaphragm has a central hole, and includes an integrally formed thin film section radially extending from a thick wall section at the center hole, and a seal section is provided at the peripheral edge thereof. A diaphragm hold-down member penetrates the central hole at the shoulder section of the rod, causing the second diaphragm to be sandwiched and fixed. The rod is disposed with play in the through-hole in the bottom of the cylinder, and is supported by a spring engaged between a step section of the cylinder and the bottom surface of the shoulder in a state such that radial movement is prevented.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: February 1, 2011
    Assignee: Asahi Organic Chemicals Industry Co., Ltd.
    Inventor: Takashi Yamamoto
  • Publication number: 20110006239
    Abstract: A valve assembly disposable in a turbocharger housing includes a cover; a sealing body connected to the cover so as to form a pressure space between the cover and the sealing body; a restoring spring disposed in the pressure space and disposed against the cover and the sealing body, wherein the sealing body is moveable relative to the cover counter to the force of the restoring spring; and a diaphragm connecting the cover and the sealing body to each other, wherein the diaphragm at least partly surrounds the sealing body.
    Type: Application
    Filed: July 9, 2010
    Publication date: January 13, 2011
    Inventors: Torsten GERLICH, Joerg BITTNER
  • Patent number: 7869198
    Abstract: The present invention provides a multiple seal electronic display module having displacement springs for distributed use as major components of an electronic sign. Displacement springs are provided to displace the electronic display module from the front of an electronic sign mounting panel until latching mechanisms are properly actuated in order to secure the electronic display module to the electronic sign mounting panel and thus provide a visual clue indicating proper or improper securing. A configured front edge seal provides for multiple surface sealing of multiple components consisting of, but not limited to, a louver panel, an LED circuit board, and a housing. A rear seal is also provided to seal the rear of the electronic display module to the electronic sign mounting panel. Input and output signal jack base seals and a power jack base seal provide effective seals between the housing and the signal and power jacks.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: January 11, 2011
    Assignee: Daktronics, Inc.
    Inventors: Nathan L. Nearman, Ryan J. Nielsen, Kent S. Miller, Mark D. Dennis, Bradley D. Rinschen, Douglas P. Tvedt, Lenny A. Sik, Kurt L. Peters, Brian W. Kroll, Derek J. Heronimus, David G. Philips
  • Patent number: 7862000
    Abstract: A microfluidic structure and method, where the structure comprises a featureless gasket layer allowing for efficient and reproducible structure production and assembly. Layering methods allow for the use of a variety of device materials and easy assembly.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: January 4, 2011
    Assignees: California Institute of Technology, Siemens Medical Solutions
    Inventors: Arkadij Elizarov, James R. Heath, Hartmuth Kolb, Michael van Dam
  • Publication number: 20100320410
    Abstract: Provided is a diaphragm-actuated fluid control valve capable of, even in a region where the pressure difference between the pressures on the upper surface side and the lower surface side of a diaphragm is small, significantly changing the amount of lift of the diaphragm relative to the change in the pressure difference, without reducing the thickness of the diaphragm, and thus is capable of providing a predetermined flow rate and performing stable flow rate control. The control valve has a diaphragm 35 for driving a valve 25. The diaphragm 35 has a mountainous-wave portion 35b formed between an outermost portion 35a and an innermost portion 35c thereof, the mountainous-wave portion having the shape of concentric circles when viewed in a plan view and having N+(0.25 to 0.75) elevated portions that protrude upward or downward when viewed in cross section, where N is a positive integer (1, 2, 3, . . . ).
    Type: Application
    Filed: June 1, 2010
    Publication date: December 23, 2010
    Inventors: Takashi Mogi, Mafumi Morita
  • Publication number: 20100306911
    Abstract: A flushing valve suitable for reducing water wastage from a cistern of a toilet is described. The flushing valve comprising an inlet valve, an outlet valve and a timer valve. The timer valve is mechanically connected to both the inlet valve and the outlet valve so as to control their movement between an open and a closed position such that the timer valve prevents both the inlet valve and the outlet valve from simultaneously being in their open positions. By preventing the inlet valve and the outlet valve from simultaneously being in their open positions results in the fact that the flushing valve does not allow the cistern to start to refill until after the flush process is complete. This results in a significant reduction in the volume of water passing through the cistern during each flushing cycle.
    Type: Application
    Filed: October 3, 2008
    Publication date: December 9, 2010
    Inventor: Thomas Henry Bell
  • Publication number: 20100304263
    Abstract: A valve and a fuel cell using the same are provided, the valve having a fluid inlet, a fluid outlet, a flow path communicating therebetween, a valve element provided in the flow path, a diaphragm which is disposed so as to separate the inside from the outside of the flow path and which is to be deformed by the difference in pressure between the inside and the outside of the flow path, a valve shaft connecting between the valve element and the diaphragm, and an actuator provided for the diaphragm. In the valve described above, the valve element is displaced by at least one movement of the diaphragm and the actuator to open and close the valve. Accordingly, the valve has a simple structure which can be easily miniaturized and which is unlikely to be degraded even when a corrosive fluid flows through the valve.
    Type: Application
    Filed: August 6, 2010
    Publication date: December 2, 2010
    Inventors: Shunsuke Shioya, Masaaki Shibata
  • Publication number: 20100294971
    Abstract: A valve component (1), formed at least partly of resilient material, including a body portion (2), of generally overall cylindrical shape, a radial recess (3), provided within an end surface of said body portion, and a peripheral flange (5), extending outwardly from said body portion adjacent to said radial recess. The peripheral flange (5) of the valve component (1) is adapted to be secured to a valve casing in a manner such that axial movement of the valve component (1) is permitted between an open position, wherein flow of fluid is permitted between an inlet and an outlet, and, a closed position, wherein the flow of fluid is prevented.
    Type: Application
    Filed: October 15, 2008
    Publication date: November 25, 2010
    Inventor: Elias Hajjar
  • Publication number: 20100294970
    Abstract: An adjustable hydraulically operated pressure management control pilot assembly has first and second diaphragm assemblies which define two fluid pressure chambers. Varying the pressure between these two fluid chambers modulates the control pilot assembly between adjusted low and high set points, which can be used to control high and low pressures downstream of a pressure reducing valve of a water supply system.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Applicant: CLA-VAL CO.
    Inventor: Daniel Ré
  • Patent number: 7814929
    Abstract: A valve of cleanable design capable of maintaining unfavourable conditions for microbial activity on the downstream side and/or outlet of the valve, said valve comprising: A smooth and contoured body (5) with an integral upstream connector (1), downstream connector and defined fluid flow path; a flexible sealing membrane (9) being: (i) selectively moveable into contact with the valve body to close the valve; (ii) selectively moveable out of contact with the valve body to open the valve; (iii) selectively operable to a range of positions to vary the flow rate of fluid through said valve; a defined internal shape that allows the fluid to drain out of the valve body; an elongated heater (7) secured into the valve body in a location so as not to be contact with the fluid or disrupt the internal smooth and contoured body, the heater being operative to heat the valve body to a predetermined temperature.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: October 19, 2010
    Inventors: Gary Wayne Yewdall, Graham William Pickering
  • Publication number: 20100245497
    Abstract: A buffer receiving and supplying liquid includes: a cylindrical cup having a bottom; and a flexible film forming a sealed space between the cup and the film, wherein one of a depressed portion and a projecting portion is formed at an open end of the cup, and wherein the film is attached to the open end and one of the depressed portion and the projecting portion along the surface thereof.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 30, 2010
    Inventor: Hirokazu Ono
  • Patent number: 7802771
    Abstract: A fluid control device 71 includes a working member 75 in automatic opening and closing, which is moved vertically by introduction or discharge of compressed fluid to or from a compressed fluid inlet chamber 90 formed in a casing 73 to move a valve element holder 5 to an opening position against bias force of a compression coil spring 77, and an working member 74 in manual opening and closing, which is moved vertically by a manual operation and directly presses the valve element holder 5 downward when it is moved downward.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: September 28, 2010
    Assignee: Fujikin Incorporated
    Inventors: Kenji Tsubota, Michio Yamaji, Shigeru Itoi, Tsutomu Shinohara, Ichiro Tokuda
  • Publication number: 20100237270
    Abstract: An expansion valve for reducing the quantity of material required for the valve body by contriving the arrangement of bolt fitting grooves. In the expansion valve (20), displacement of a valve member driver (36) provided in the valve body (21) is transmitted to a valve member by a valve member drive rod (36f) and the valve opening is altered to control the flow rate of the refrigerant. The valve body (21) consists of a body upper portion (40) and a body lower portion (41) narrower than the body upper portion (40), and bolt fitting grooves (43, 43) opening in the flank of the valve body (21), preferably opening obliquely downward, are formed at the boundary (42) of the body upper portion (40) and the body lower portion (41). With such a layout, the material required at the boundary (42) can be reduced furthermore and the quantity of material required for the valve body (21) can be reduced furthermore, as a result.
    Type: Application
    Filed: September 18, 2008
    Publication date: September 23, 2010
    Inventors: Kazuto Kobayashi, Takashi Mogi, Eiji Fukuda
  • Patent number: 7789012
    Abstract: An improved bonnet assembly for a weir type or radial style valve, comprising a hollow bonnet housing an actuator assembly comprising an actuator connected to a spindle, the hollow bonnet having a plurality of orifices to allow free entry and exit of a liquid such as a cleaning solution within the bonnet and to enable the liquid to thoroughly contact and exit the bonnet assembly without the need of disassembly. The valve or parts of the valve such as the bonnet assembly or its components are made of performance engineered polymeric material to prevent corrosion and/or galling, and also reduce the weight and sometimes the cost of the valve without sacrificing quality and performance.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: September 7, 2010
    Assignee: Aquasyn, LLC
    Inventors: Joseph Peter Marcilese, Dean C. Richards, Michael C. Gagne
  • Patent number: 7790325
    Abstract: A valve and a fuel cell using the same are provided, the valve having a fluid inlet, a fluid outlet, a flow path communicating therebetween, a valve element provided in the flow path, a diaphragm which is disposed so as to separate the inside from the outside of the flow path and which is to be deformed by the difference in pressure between the inside and the outside of the flow path, a valve shaft connecting between the valve element and the diaphragm, and an actuator provided for the diaphragm. In the valve described above, the valve element is displaced by at least one movement of the diaphragm and the actuator to open and close the valve. Accordingly, the valve has a simple structure which can be easily miniaturized and which is unlikely to be degraded even when a corrosive fluid flows through the valve.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: September 7, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunsuke Shioya, Masaaki Shibata
  • Publication number: 20100207048
    Abstract: There is provided a suck back valve system in which problems in the suck back function are resolved. In a suck back system including an integral-type suck back valve in which an on/off valve that performs opening and closing operations by a first pneumatic actuator has a suck back function of preventing liquid dripping by means of a diaphragm that moves with the closing operation and a protective on/off valve provided at the upstream side adjacent to the integral-type suck back valve as a measure against malfunction in the integral-type suck back valve and performing opening and closing operations by a second pneumatic actuator, an opening and closing control unit is provided that, during the fully closing operation of the integral-type suck back valve, completes the fully closing operation of the protective on/off valve earlier than full closing of the integral-type suck back valve.
    Type: Application
    Filed: October 10, 2008
    Publication date: August 19, 2010
    Inventor: Atsushi Inoue
  • Patent number: 7766028
    Abstract: A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the diaphragm controls flow into the chamber. Increased pressure in the chamber decreases the flow into the chamber and decreasing pressure increases flow whereby fluid flow out from the chamber is maintained at a desired pressure. The outlet pressure is adjusted by deflecting the diaphragm in a direction to open the valve while permitting a section of the diaphragm connected to the valve member to remain responsive to the pressure in the chamber. An adjustment cover is provided to adjustably deflect the diaphragm and includes a catch mechanism to allow adjustment of the fluid outlet pressures and also retain the device at a desired value. An indicator arrangement may be provided to visually indicate the fluid outlet pressure.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: August 3, 2010
    Assignee: I-Flow Corporation
    Inventors: Roger Massengale, Stanley Fry, Charles J. McPhee
  • Patent number: 7753073
    Abstract: An occlusion valve with safety relief comprising a manifold block having an inlet and an outlet. A diaphragm connected to the manifold block and for being manually pressed to stop flow between the inlet and the outlet. A pressure relief valve internal to the manifold block and in fluid communication with downstream and upstream pressures and wherein when the diaphragm is pressed and downstream pressure exceeds a predetermined pressure the pressure relief valve opens allowing flow through the occlusion valve with safety relief.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: July 13, 2010
    Assignee: Midmark Corporation
    Inventor: John A. Owczarczak
  • Patent number: 7744060
    Abstract: Apparatus and method for fail-safe high-speed-pneumatic valve is disclosed. Fail-safe dependability is provided by a spring-loaded normally-closed pneumatic actuator. When the spring-loaded actuator is pressurized, the normally closed mechanism is actuated to the valve active position. Concurrently, the pressure is directly applied to deflect a diaphragm or a bellow-assembly back to sealing position. Ultra high purity embodiments with standard dome shaped diaphragms are disclosed. Additional high conductance diaphragms and bellows embodiments are employed for higher conductance valves. Novel flow path layouts are disclosed. The valves are applicable for fast gas and fluid switching and are particularly suitable for high productivity Atomic Layer Deposition (ALD) applications. Additional embodiments cover improved diaphragm and seal reliability, externally adjustable valve conductance, improved valve safety and high temperature valve seals.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: June 29, 2010
    Assignee: Sundew Technologies, LLC
    Inventor: Ofer Sneh
  • Publication number: 20100140524
    Abstract: An aseptic diaphragm valve in which a valve seat (37) is formed by a groove including a concave surface of engagement that positioned along an outer diameter of an upper end of an inlet tube (32), and a resilient valve member portion (41) that is annular in extent with a convex surface that moves into the groove to contact the concave surface (37) around the outer diameter of the inlet tube (32) to close the valve. The valve member portion (41) has at least a coating of polytetrafluoroethylene (47) or equivalent material.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 10, 2010
    Inventors: Wayne Hays, Ray Gardner
  • Publication number: 20100122733
    Abstract: Embodiments of a valve are disclosed that allow for the control and adjustment of a fluid flow between a valve inlet port and a valve output port as a function of the pressure at the valve inlet port, a pressure at a first pressure input port, and a reference pressure.
    Type: Application
    Filed: November 20, 2008
    Publication date: May 20, 2010
    Applicant: MTI MicroFuel Cells, Inc.
    Inventors: Bryan Grygus, Keith Brown
  • Patent number: 7717127
    Abstract: A diaphragm valve includes a valve body and a compressor which is actuatable by a valve stem for operating a diaphragm and has an outer circumference which is formed with at least one axial groove. The compressor is guided by an intermediate piece in axial direction and restrained by the intermediate piece against rotation. The intermediate piece has an inside wall which is formed with at least one axial guide nose for engagement in the groove of the compressor.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: May 18, 2010
    Assignee: GEMÜ Gebrüder Müller Apparatebau GmbH & Co. KG
    Inventor: Fritz Müller
  • Patent number: 7703743
    Abstract: A valve drive device may include a motor, a rotational member rotated by the motor, a linearly moving member engaged with the rotary member, a converting mechanism for converting rotation of the rotational member into linear movement of the linearly moving member, a diaphragm valve for opening or closing an opening part by linearly moving member, and an urging member for closing the opening part through the diaphragm valve. The linearly moving member is linearly moved by the rotational member and the opening part is closed by the diaphragm valve in a state that the rotational member and the linearly moving member are in a non-engagement state. The valve drive device may be mounted on a pump having an inflow path and a plurality of outflow paths.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: April 27, 2010
    Assignee: Nidec Sankyo Corporation
    Inventor: Kenji Muramatsu
  • Publication number: 20100090151
    Abstract: A direct touch type metal diaphragm valve, wherein durability of the valve, that is to say, the ensured number of continuous open/close operations of the valve, is substantially increased under conditions that an appropriate flow rate coefficient Cv is maintained, and changes of the afore-mentioned Cv value over time are mitigated by means of restricting the deformation of the valve seat over time. The afore-mentioned metal diaphragm is formed in a round, reverse-dish shape by laminating a plural number of thin stainless steel plates and a thin Nickel.Cobalt alloy plate, and its center part is bulged upward, and the maximum valve stroke of the valve is regulated to be 55% to 70% of the distance of the maximum bulge height ?h of the afore-mentioned metal diaphragm.
    Type: Application
    Filed: May 10, 2006
    Publication date: April 15, 2010
    Inventors: Tsuyoshi Tanikawa, Michio Yamaji, Tadayuki Yakushijin, Hiroshi Fukuchi
  • Publication number: 20100078584
    Abstract: The present invention relates to a valve device (10) comprising a substrate (12) and an elastic membrane (13), the membrane being joined at least around a valve area to the substrate. The substrate comprises a first channel (16) and a second channel (17), both ending in the valve area, the first channel having in the valve area a first channel end surface (19) and the second channel having in the valve area a second channel end surface (21), wherein the area of the first channel end surface is substantially larger than the area of the second channel end surface.
    Type: Application
    Filed: June 26, 2006
    Publication date: April 1, 2010
    Inventors: Adrianus Wilhelmus Dionisius Maria Van Den Bijgaart, Ronald Cornelis De Gier
  • Patent number: 7686280
    Abstract: An apparatus and method for a diaphragm valve includes a valve body having a chamber in fluid communication with a first channel and a second channel. A diaphragm is disposed in the chamber, and a tapered seat member is at least partially disposed in the first channel. A sleeve is compressively disposed in the seat member between the seat member and the first channel to maintain a fluid tight seal between the seat member and the first channel. A valve member is movable to controllably urge the diaphragm into and out of engagement with the seat member to control flow of fluid between the first the first and second channel.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: March 30, 2010
    Assignee: Circor Instrumentation Technologies, Inc.
    Inventor: Patrick A. Lowery
  • Patent number: 7685662
    Abstract: A pneumatic control valve and power reserve in the form of pressurized gas in a pressurization chamber, for elastically deforming a diaphragm without closing off two admission (2) and respectively discharge (3) orifices of said valve and able to place the opening of the valve by depressurization of said pressurization chamber 5 is disclosed. The valve may be used for total and rapid deflation of a therapeutic mattress having a plurality of compartments that are inflated with air, including at different pressures.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: March 30, 2010
    Assignee: Hill-Rom Industries SA
    Inventor: Jean-Louis Viard
  • Publication number: 20100071776
    Abstract: A diaphragm-type control valve having a diaphragm and a valve body is provided preferably for use in the separation of and fluid control between a fluid source and a pressurized gas volume. The diaphragm element and a port in the body together form an intermediate chamber that eliminates the need for a check-valve downstream of the valve. In one preferred embodiment, an inner surface of the valve body defines a chamber having an inlet and an outlet in communication with the chamber, and an elongated seat member defining a groove in communication with the port. A diaphragm member having upper and lower surfaces is disposed within the chamber. The lower surface preferably includes a pair of spaced apart elongated members defining a channel therebetween. The diaphragm member engages the seat member placing the channel in communication with the groove to define an air seat in communication with the port.
    Type: Application
    Filed: October 19, 2007
    Publication date: March 25, 2010
    Applicant: Tyco Fire Products LP
    Inventors: Yoram Ringer, Roger S. Wilkins, Boris Frenkel
  • Patent number: 7681860
    Abstract: An automate fluid flow control system includes a valve member for being sealedly disposed within a fluid chamber to seal a flow of fluid flowing from a fluid inlet to a fluid outlet, a relief valve having a fluid passage extended along the valve member for communicating the fluid chamber with the fluid outlet and including a valve stopper sitting on a top opening of the fluid passage to sealedly close the fluid passage, and a powering assembly including an actuator to move the relief valve between a closed position that the valve stopper is sealedly retained to close the fluid passage and an opened position that the actuator drives the valve stopper to unseal the fluid passage for releasing a pressure within the water chamber to allow the fluid passing to the fluid outlet.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: March 23, 2010
    Inventor: Jorge Maercovich
  • Publication number: 20100059699
    Abstract: Plungers and plunger assemblies for a diaphragm-sealed valve are provided. Each plunger is adpted to be received in a passage of the valve body and includes a base member and an upper member having a longitudinal 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. Optionally, the upper member may be self-aligning within the passage. The plunger can be used to compensate for temperature variations experienced by the valve in use.
    Type: Application
    Filed: September 8, 2009
    Publication date: March 11, 2010
    Applicant: Mecanique Analytique Inc.
    Inventors: Yves Gamache, André Fortier
  • Publication number: 20100059702
    Abstract: A connector is described which includes a valve housing comprising a valve housing base and a valve cap, the valve housing defining an inlet port, and an outlet port, the valve housing further including a fluid path from the inlet port to the outlet port, the fluid path including a channel formed in an inner wall of the valve housing. A valve insert in the valve housing defines a bowl sealed by a diaphragm, such that the sealed bowl forms an inner volume in the valve housing. A valve plug operable seals the inlet port when the connector is in an unactuated state thereby closing the fluid path through the connector. Upon actuation of the connector the valve plug deforms the diaphragm into the inner volume thereby unsealing the inlet port and opening the fluid path through the connector. Because of the arrangement of the valve plug, valve insert and diaphragm, the connector has a low priming volume and has positive fluid displacement characteristics upon actuation.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 11, 2010
    Applicant: Medegen, Inc.
    Inventors: GEORGE MICHEL MANSOUR, Tim L. Truitt
  • Publication number: 20100038567
    Abstract: A suck-back valve having an open/close valve with a suck-back function is provided. The suck-back valve includes a suck-back chamber formed in a valve internal channel of the open/close valve, a piston shaft portion and an open/close pressuring member to apply pressure to a valve piece, bellows that accommodate the piston shaft portion inside and that are connected to the open/close pressuring member at one end and are supported by a casing at the other end, wherein a two-step operation is performed at the time of a closing operation of the valve piece, including a valve closing operation step in which the piston shaft portion moves to the fully closed position of the valve piece, and a suck-back operation step in which the piston shaft portion and the open/close pressuring member further move from the fully closed position of the valve piece to increase the volume of the suck-back chamber.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 18, 2010
    Inventor: Atsushi INOUE
  • Patent number: 7661437
    Abstract: A food and beverage industry membrane valve structure with a membrane which separates a control compartment from a product compartment in a food or beverage handling or processing machine. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: February 16, 2010
    Assignee: APV Rosista GmbH
    Inventors: Dieter Schulz, Frank Baumbach
  • Patent number: 7647938
    Abstract: A fill valve assembly for controlling liquid flow into a reservoir includes a mounting adapter defining a liquid inlet passage for connection to a riser for supplying water to the valve and which renders the fill valve readily mountable and demountable for installation and maintenance. A valve body has liquid inlet and outlet openings and a pressure-responsive member is disposed within the valve body and defines a control chamber with which the liquid inlet passage communicates opposite a second side of the pressure responsive member also in communication with the liquid inlet for selectively opening and closing the inlet opening to liquid flow in response to liquid pressure in the control chamber.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: January 19, 2010
    Assignee: Jobe Holdings Limited
    Inventors: David Jobe, Robin Jobe
  • Publication number: 20100001223
    Abstract: A diaphragm membrane (212) is disclosed that has a shape that spring loads a diaphragm during assembly to provide a default position for the diaphragm. The diaphragm membrane (212) is made from a resilient material. The diaphragm is spring loaded during assembly to provide a force that returns the diaphragm to the default position.
    Type: Application
    Filed: March 15, 2006
    Publication date: January 7, 2010
    Applicant: Norgren, GmbH
    Inventor: Andreas Tschurtz
  • Publication number: 20090314972
    Abstract: A microfluidic diaphragm valve. The valve comprises: an inlet port; an outlet port; a weir positioned between the inlet and outlet ports, the weir having a sealing surface; a diaphragm membrane for sealing engagement with the sealing surface; and a thermal bend actuator for moving the diaphragm membrane between a closed position in which the membrane is sealingly engaged with the sealing surface and an open position in which the membrane is disengaged from said sealing surface.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 24, 2009
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Kia Silverbrook
  • Publication number: 20090308460
    Abstract: A rocker type diaphragm valve is disclosed. The diaphragm (428) in the diaphragm valve is asymmetric and the stroke of the diaphragm is offset from the center of the diaphragm. The two sealing surfaces (318, 320) that the diaphragm acts against form two planes that make an angle with respect to ones another. The diaphragm (428) may be fabricated in only one piece. The diaphragm (428) may also be made from a resilient material and shaped in such a way as to create a spring force holding the diaphragm into a default position in the valve.
    Type: Application
    Filed: March 15, 2006
    Publication date: December 17, 2009
    Applicant: Norgren, Gmbh
    Inventor: Andreas Tschurtz
  • Patent number: 7628376
    Abstract: A diaphragm valve having a diaphragm valve element including a valve element body movable into contact with a valve seat, a web portion extending outward from the valve element body, and a fixed portion formed at an outer peripheral edge of the web portion. The web portion includes a vertical portion vertically formed continuous with the valve element body, a horizontal portion horizontally formed continuous with the fixed portion, and a connecting portion of a circular arc shape (an upward protruding shape) in section to connect the vertical portion with the horizontal portion, thereby holding the vertical portion in constant contact with an outer surface of a backup.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: December 8, 2009
    Assignee: CDK Corporation
    Inventors: Akinori Masamura, Toshiyuki Nagao, Hiroki Iwata
  • Patent number: 7625624
    Abstract: The present invention relates to a porous adaptive membrane structure that has movable membranes. The structure can be made to change its gas, liquid or particulate permeability in response to surrounding environmental conditions. The application of this invention is includes protective apparel that is comfortable to wear wherein the level of protection provided is based on conditions in the environment. Hence, the protective apparel is highly breathable and comfortable in a non-hazardous environment but impermeable or only semipermeable in a hazardous environment.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: December 1, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Joseph D. Trentacosta, Vivek Kapur
  • Patent number: 7614606
    Abstract: A compressor for operating a diaphragm of polymer material for a diaphragm valve includes a base body having a diaphragm-proximal surface, and a material layer at least partially provided on the diaphragm-proximal surface and having a very low coefficient of friction.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: November 10, 2009
    Assignee: Gemü Gebrüder Müller Apparatebau GmbH & Co. KG
    Inventor: Fritz Müller
  • Publication number: 20090272922
    Abstract: A normally open non-electric valve includes a flow path through an apertured valve seat. cavity isolated from the flow path is sealingly closed off adjacent the valve seat by a flexible diaphragm. The diaphragm is sufficiently flexible to be pushed and held away from the valve seat by fluid flowing in the flow path. When it is desired to close the valve, a pressure medium is introduced into the cavity so as to force the diaphragm against the valve seat and interrupt the fluid flow in the flow path. The normally open valve can inexpensively be converted from an inexpensive electric solenoid valve by removing the plunger, spring and coil from the electric valve, closing off the plunger cavity with a flexible diaphragm, and selectably introducing a pressure medium into the cavity when it is desired to close the valve.
    Type: Application
    Filed: May 16, 2005
    Publication date: November 5, 2009
    Inventor: Robert S. Bosko
  • Patent number: 7607641
    Abstract: One or more diaphragm valves are integrated as part of a cover of a microfluidic cassette cartridge. A rigid body portion includes one or more recessed valve areas and a plurality of fluid channels. A recessed valve area is disposed along either a bottom surface or a top surface of the rigid body portion. An inlet fluid channel and an outlet fluid channel are formed within the rigid body portion of each recessed valve area. A flexible membrane cover is sealed over the bottom surface of the body portion, and another flexible membrane cover is sealed over the top surface. A portion of the membrane cover that covers a recessed valve area functions as a valve membrane of the diaphragm valve. The flexible membrane functions as both a cover of the cartridge, thereby sealing and enclosing the appropriate channels, and a valve membrane of the diaphragm valve.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: October 27, 2009
    Assignee: MicroFluidic Systems, Inc.
    Inventor: Bob Yuan
  • Publication number: 20090256100
    Abstract: A vacuum valve device is used with a bag and has a base and a clip. The base has a tube, a clipping flange and a valve. The tube mounted through a sheet of the bag and has a central hole and at least one outlet hole. The clipping flange is formed on the tube. The valve is mounted slidably in the tube and selectively seal the at least one outlet hole. The clip is mounted detachably around the tube of the base and cooperates with the clipping flange to hermetically clip the sheet of the bag. The vacuum valve device may be reused, is economical and marketable.
    Type: Application
    Filed: June 15, 2009
    Publication date: October 15, 2009
    Inventor: Ti-Tien Lee
  • Publication number: 20090244223
    Abstract: A membrane valve having a membrane portion is used. The membrane valve can be formed using an elastomer. Also, the membrane valve can include N (N is an integer of 2 or greater) engaging portions that engage with the membrane support portion. Also, the membrane portion can also be affixed at a position closer to the first seal surface than the second seal surface in the seal portion. Here, the contact area of the first seal surface and the first member can be larger than the contact surface of the second seal surface and the second member. Also, in a first case where the end of the projecting portion is faced to a first plane and the membrane valve placed on the first plane, the end of the first support portion contacts the first plane and supports the membrane valve, and the end of the projecting portion can contact the first plane in a state with the membrane portion not deformed.
    Type: Application
    Filed: March 19, 2009
    Publication date: October 1, 2009
    Inventors: Tadahiro Mizutani, Hiroyuki Kawate, Taku Ishizawa, Shun Oya
  • Publication number: 20090242818
    Abstract: A diaphragm valve including a valve body, a diaphragm assembly and an actuator assembly having a housing body that isolates the actuator from the ambient atmosphere. The diaphragm assembly is welded to the valve body to reduce and/or eliminate fluid leakage around the diaphragm assembly. Additionally or alternatively, the housing body for the actuator assembly may be welded to the valve body to reduce fluid leakage. The welding may be performed using ultrasonic welding techniques.
    Type: Application
    Filed: January 4, 2007
    Publication date: October 1, 2009
    Applicant: ENTEGRIS, INC.
    Inventors: John A. Leys, Mike Schleicher
  • Patent number: 7581712
    Abstract: A valve (100) includes a body (1) having a valve seat (10) formed therein, a bonnet (2), a diaphragm (3) supporting a valve element (18) abutting against and moving away from the valve seat (10), and an elastic member such as an O-ring (5). The body (1) is formed with an annular groove (13) extending around the valve seat (10), and the diaphragm (3) is provided at the peripheral edge (20) with an annular engagement part (21) formed to have an approximate L-shape in cross-section. The annular engagement part (21) is inserted into the annular groove (13) in a tight state by the elastic member disposed between the bonnet (2) and the annular engagement part (21) of the diaphragm (3).
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: September 1, 2009
    Assignee: Asahi Organic Chemicals Industry Co., Ltd.
    Inventors: Kenro Yoshino, Takeshi Hamada
  • Publication number: 20090206293
    Abstract: An apparatus and method for controlling the flow of fluid though a channel. A first substrate defines features comprising a first channel. At least a portion of the first channel is bounded a deformable material having a first contour in which the first channel has a first cross-sectional area and a second contour in which the first channel has a second cross-sectional area.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 20, 2009
    Inventors: Timothy Beerling, Harry F. Prest
  • Patent number: 7571893
    Abstract: A valve comprises a valve seat and a movable diaphragm. The valve seat defines a fluid orifice and is formed at least partially of polybenzimidazole. The diaphragm is sized and configured to bear against the fluid orifice to substantially block fluid flow through the orifice. The valve is advantageously used in a hot zone of a semiconductor processing system.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: August 11, 2009
    Assignee: ASM America, Inc.
    Inventors: Carl L. White, Paul G. Curry
  • Patent number: 7571892
    Abstract: A valve assembly includes a valve body having an internal cavity, an orifice in communication with the internal cavity for communicating with a process in a tank or conduit and an outlet through which process material entering the internal cavity through the orifice can be drained from the internal cavity. A valve actuator body includes an actuating shaft having a sealing tip and is mounted for movement in the valve actuator body to seal and unseal the orifice. A diaphragm is mounted to the sealing tip and includes a base that seals with a bottom wall of the valve body. The bottom of the valve body has an aperture that receives the actuating shaft therethrough. The diaphragm is mountable to and removable from the bottom wall of the valve body through the aperture.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: August 11, 2009
    Assignee: Pharmenta, Inc.
    Inventor: Douglas A. Newberg
  • Patent number: RE42084
    Abstract: A valve housing of a diaphragm valve has a first valve chamber, into which open a central channel and first and second channels. Valve seats are arranged in the housing, and a first diaphragm is adapted to seal against at least one of the first and second valve seats. A second valve chamber, into which opens a fourth channel, communicates with the central channel through an opening in the housing. A third valve seat is provided and a second diaphragm is adapted to seal the third valve seat.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: February 1, 2011
    Assignee: Buerkert Werke GmbH
    Inventor: Ingvar Bäcklund