Liquid Supplied At Valve Interface Patents (Class 137/246)
  • Patent number: 9482357
    Abstract: Applicant discloses a thermally actuated valve having a housing, a resilient seat, a thermally conductive piston, a spring fluid seal, and a working material. The housing defines an inlet and an outlet and has two chambers. The seat is adjacent the inlet and the piston is adapted to move towards the seat when a working fluid in the housing warms and expands and away from the seat when a working fluid in the housing cools. By moving away from the seat, fluid flow through the valve is generated. In one application, Applicant's valve acts as a freeze prevention device. In another application, Applicant's valve is used to cool a source of water.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: November 1, 2016
    Assignee: Baker Products Ltd.
    Inventor: Robert Dulin
  • Patent number: 9410391
    Abstract: A system and methodology facilitates utilization of a valve of a type which may be used as a subsea test tree. The valve comprises a valve element pivotably mounted in a housing having a passageway therethrough. The valve element may be actuated between an open position and a closed position blocking the passageway. A cutter is disposed along a first surface of the valve element and a seal system is positioned for engagement with a second surface of the valve element to provide separate cutting and sealing surfaces. Actuating the valve element from the open position to the closed position enables cutting of a conveyance, that may be positioned through the passageway, while simultaneously forming a seal along a separate surface to sealingly block the passageway.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: August 9, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Oguzhan Guven, Gary L. Rytlewski
  • Patent number: 9388930
    Abstract: A tubing interface having an elongated tube, an elastomeric ferrule and a support ring device disposed around the ferrule. The ferrule includes a bore which is sized for receipt of the tube. The tubing interface further includes a cap member having an exterior surface, an opposed interior surface, and a tube receiving passage extending therethrough. The receiving passage is formed and dimensioned for axial sliding receipt of the tube member therethrough. The cap member further includes a cup-shaped receiving recess extending proximally from the interior surface, and is formed and dimensioned for axial receipt of the proximal end of the ferrule body member and the support ring. When the cap member is mounted to a valve apparatus, the support ring and the elastomeric ferrule device compressively cooperate with the cup-shaped recess to form a fluid-tight seal between the tube port and a communication port of the valve apparatus.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: July 12, 2016
    Assignee: IDEX Health & Science LLC
    Inventor: Carl M. Servin
  • Patent number: 9297459
    Abstract: A gate valve includes a valve plate located in a movable manner within a holder, a sealing for sealing off of the valve plate relative to the holder, and a wedge arrangement with several first wedge elements located on the valve plate in its direction of movement at a distance from one another, and second wedge elements belonging to the first wedge elements, by means of which the valve plate is pressed transverse to the direction of movement of the valve plate against the sealing with a movement into a closing position. In order to facilitate a low-friction actuation with a reduced actuation force, also in a compact and space-saving manner, the second wedge elements are supported on the holder, so that they can move relative to the holder.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: March 29, 2016
    Assignee: VAG—ARMATUREN GMBH
    Inventor: Miroslav Falesnik
  • Patent number: 9211424
    Abstract: A process for straightening or relaxing hair involving the steps of: (a) providing a hair straightening/relaxing composition containing: (i) from about 0.1 to about 50% by weight of at least one weak non-hydroxide base; and (ii) remainder, to 100%, a cosmetically acceptable medium, all weights based on the weight of the hair straightening/relaxing composition; (b) contacting the hair with the hair straightening/relaxing composition to form treated hair; (c) optionally, rinsing the hair straightening/relaxing composition from the treated hair; (d) optionally, contacting the treated hair with a non-volatile oil; and (e) smoothing the treated hair using a combination of heat and means for physically smoothing hair.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: December 15, 2015
    Assignee: L'OREAL
    Inventors: Nghi Van Nguyen, David W. Cannell, Cynthia Chong Espino, Sawa Hashimoto
  • Patent number: 9022058
    Abstract: According to an embodiment, a valve comprises: a valve member, wherein the valve member is made from a non-deformable material; a seat, wherein the seat: (A) is made from a non-deformable material; and (B) is positioned adjacent to the valve member; a seal, wherein the seal is created by the interaction between at least a portion of the seat and at least a portion of the valve member and a sealant; and at least one recess, wherein the at least one recess: (A) is located on the inside of the seat or the outside of the valve member; and (B) is capable of containing at least one particulate, wherein the valve is capable of being opened or closed via relative movement of the valve member and the seat.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: May 5, 2015
    Assignee: Halliburton Energy Services, Inc
    Inventors: Joseph A. Beisel, Lawrence A. Herndon
  • Patent number: 8678645
    Abstract: Reliably and quickly acting device that can be cheaply employed for monitoring the flow of water vapor, having a water vapor line extending between a switching valve and a cross-section connection, in particular a nozzle, and a temperature sensor monitoring the temperature in the line.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: March 25, 2014
    Assignee: Krones AG
    Inventors: Josef Hausladen, Hannelore Sollner, Bettina Huber
  • Patent number: 8555925
    Abstract: The invention relates to a pressure relief valve for a packaging container (3), comprising a base body (4) with a central through opening (9), a sealing surface (14) and a peripheral region (18), wherein the peripheral region (18) may be sealingly connected to an inner side (3a) of the packaging container (3) and the sealing surface (14) has an inwardly tapering form and a membrane (6), making contact with the sealing surface (14) to permit a seal wherein a fluid (5) is arranged between the sealing surface (14) and the membrane (6). The membrane (6) is flexible and a recess (30) is made in the base body (4) into which the central through opening (9) opens out, wherein in the opening region of the central through opening (9), an annular bead (12) projecting in the direction of the membrane (6) is arranged, projecting into the recess (30).
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: October 15, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Hans-Peter Stadel, Herbert Stotkiewitz, Juergen Haak
  • Patent number: 8511345
    Abstract: A method for controllably delivering hydrocarbon gas, comprises selectively opening and closing a valve to control the flow of hydrocarbon gas from a pressure vessel to a supply line for a hydrocarbon gas-fueled device, detecting any airborne hydrocarbon gas, attempting to move the valve from an open state to a closed state in response to detecting airborne hydrocarbon gas while the valve is in the open state, and releasing a liquid sealant to the supply line in response to detecting escaped gas after at least attempting to move the valve to the closed state.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: August 20, 2013
    Assignee: International Business Machines Corporation
    Inventor: Pankaj S. Bavishi
  • Patent number: 8439072
    Abstract: Embodiments of the invention include a system and method for controllably delivering hydrocarbon gas to a hydrocarbon gas-fueled device. According to one embodiment, a valve having an open state and a closed state is used to control the flow of hydrocarbon gas from a pressure vessel to a supply line. A hydrocarbon gas sensor detects airborne hydrocarbon gas and generates a signal in response. A controller automatically moves the valve to the closed state in response to the signal from the hydrocarbon gas sensor while the valve is in the open state. The controller automatically releases liquid sealant to the supply line in response to a continued signal from the hydrocarbon gas sensor after at least attempting to move the valve to the closed state.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: May 14, 2013
    Assignee: International Business Machines Corporation
    Inventor: Pankaj A. Bavishi, III
  • Patent number: 8371334
    Abstract: A rotary valve (1) includes a valve body (2) formed with a chamber communication passage (24) for flowing a main fluid and a vent communication passage (25) for discharging the main fluid and a cylindrical valve member (3) rotatably held in the valve body (2) and formed with a main passage (31) for flowing the main fluid. The cylindrical valve member (3) is rotated to switch the connection of the main passage (31) between the chamber communication passage (24) and the vent communication passage (25). The rotary switching valve (1) further includes a purge gas passage for passing purge gas in a clearance (11) between the valve body (2) and the cylindrical valve member (3), the purge gas being supplied to the clearance (11) to prevent the main fluid from leaking out of the main passage (31).
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: February 12, 2013
    Assignees: CKD Corporation, Tokyo Electron Limited
    Inventors: Yukio Ozawa, Takashi Yajima, Tsuneyuki Okabe, Shigeyuki Okura
  • Patent number: 8286940
    Abstract: The present invention is directed to an injection molding valve configured to prevent the leaking or stringing of injected thermoplastic from the valve. The valve includes a housing having a first bore along a length thereof and a second bore intersecting the first bore. A rotatable member is inserted through the second bore and is in communication with a lever for the actuation thereof. The rotatable member includes a hole therethrough such that when the hole is aligned with the first bore, thermoplastic may travel freely through the first bore. The second bore further includes at least one groove in communication with a port for receiving injected thermoplastic. The injected thermoplastic is hardened to form an seal therein and configured to prevent thermoplastic from leaking out of the valve housing.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: October 16, 2012
    Assignee: MGS Mfg. Group, Inc.
    Inventors: John J. Hahn, Larry A. Schmitt
  • Patent number: 7721752
    Abstract: The invention relates to a pressure relief valve, comprising a base body, which is covered by a valve membrane. The base body which is located on the inner face of a packaging container, permits the escape of excess pressure from the packaging container into the atmosphere by means of passages and perforations that are configured in the wall of the packaging material. The inventive pressure relief valve thus responds particularly well. i.e. allowing particularly low opening pressures, by means of the special configuration of its base area.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: May 25, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Stotkiewitz, Hans-Peter Stadel
  • Publication number: 20090065724
    Abstract: A cylindrical rotary valve to control or affect fluid flow in processes where the fluid temperature must be maintained within a target range, the fluid pressure is varied and/or the amount of fluid flow is controlled comprising one or more of the following elements alone or in combination: (i) the use of a temperature control core in the valve shaft, (ii) the contoured or tapered shapes or the conduits (iii) the use of the valve to create predictable pulses or waves in the fluid being controlled, (iv) a modular system of valves where the valve body is fixed and the valve shaft is replaceable with a second valve shaft of different conduit shape, (v) a rotary valve with multiple inputs or multiple outputs for either mixing or diverting of input fluids, and (vi) the use of the valve in abrasive particulate blasting and in particular dry ice blasting.
    Type: Application
    Filed: November 19, 2004
    Publication date: March 12, 2009
    Applicant: MITTON VALVE TECHNOLOGY INC.
    Inventors: Michael Jon Mitton, Marshall James Douglas McLean, Viorel Grosu
  • Patent number: 7490623
    Abstract: A one-way pressure-relief valve (4) applicable to a package (1) which contains a gas releasing product, said package (1) comprising walls defining a package structure for said product, one of such walls (2) bearing at least one orifice (3) for gases to be expelled, on which orifice the one-way valve (4) is applied, valve (4) comprising a thin flexible bottom sheet (5) provided with an opening (7) and a thin flexible top sheet (6) overlapping bottom sheet (5), wherein bottom sheet (5) is attached to the top sheet (6) in a region defined by the edge of valve (4) and a closed perimeter (7?), the closed perimeter (7?) being defined on a substantially central region of valve (4), surrounding opening (7); a portion of closed perimeter (7?) being located substantially near a portion of the perimeter of opening (7), defining a first sector (8) within which a gas medium is enclosed, and the remaining portion of closed perimeter (7?) is located substantially apart from the remaining portion of opening (5) perimeter, de
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: February 17, 2009
    Assignee: Celomat S.A.
    Inventor: Christian Rypstra
  • Patent number: 7240796
    Abstract: A valve assembly is provided for venting pressurized gases generated from within an enclosed package during a heating of the package. The valve assembly has a membrane element, a tubular body and a retaining member. The tubular body has an open end, a closed end and a recess defined therebetween. The closed end has an aperture for venting the pressurized gases therethrough. The recess is operative to receive and support the membrane element adjacent the closed end. The retaining member is operative for snap-fit engagement with the tubular body for retaining the membrane element within the recess.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: July 10, 2007
    Assignee: PPi Technologies, Inc.
    Inventor: R. Charles Murray
  • Patent number: 7178550
    Abstract: A pressure control valve for a packaging container includes a supporting body having a recess a is disposed in an axially captive fashion either by means of gluing or by means of securing projections A device for attaching the pressure control valve to a material web has a stroke die and a sealing die that cooperates with the stroke die and contains a needle holder for producing holes in the material web.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: February 20, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Stotkiewitz, Juergen Haak, Thomas Fischer
  • Patent number: 7025078
    Abstract: A valve seat and a valve assembly incorporating such valve seat form tight dual seals with glass lined nozzle of a reagent or reaction vessel. This reduces or eliminates cavities and crevices between the value seat and the nozzle where residues or contaminants can accumulate. Additionally, the present valve assembly comprises flush ports to permit the valve seat and the valve to be cleaned-in-place. This eliminates the need to disassemble the valve seat and/or the valve to remove the contaminants, thereby minimizing process “down time.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: April 11, 2006
    Assignees: Micromold Products, Inc., De Dietrich Process Systems, Inc.
    Inventors: Arthur S. Lukach, Jr., Joseph Nevadunsky
  • Patent number: 6874525
    Abstract: Disclosed is a control device for controlling a two-way linear solenoid valve (60) including a pressure regulating port (60p) which communicates with a hydraulic circuit side, a drain port (60d) which communicates with a drain side, a plunger (61) which controls the state of communication between the pressure regulating port and drain port, and a coil (70) which drives the plunger in accordance with an exciting current. The control device has a current generator (65) which supplies the coil with the exciting current corresponding to a duty signal; and a microcomputer (1). The microcomputer determines whether or not a preset foreign matter removal starting condition for removing foreign matter accumulated in the ports has been established.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: April 5, 2005
    Assignee: Jatco, Ltd.
    Inventors: Yusuke Kimura, Tatsuo Ochiai, Tateki Jozaki, Yoshinori Ishimori, Hideshi Wakayama
  • Patent number: 6863510
    Abstract: Disclosed is a vacuum preventing device for a scroll compressor comprising: a chamber formed at one side of a fixed scroll and having a suction hole, a compression hole, and a discharge hole at an inner circumference surface thereof; an open/close member installed in the chamber and having a seal oil groove at an outer circumference surface thereof for selectively connecting the discharge hole to the suction hole; and an elasticity member installed in the chamber for providing an elasticity force to the open/close member. The device can enhance a compression efficiency of the compressor by preventing gas leakage efficiently and reduce a fabricating cost by improving a design of a clearance and enhancing a tolerance limit range.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: March 8, 2005
    Assignee: LG Electronics Inc.
    Inventor: Yang-Hee Cho
  • Patent number: 6827105
    Abstract: A valve for controlling flow of fluid through an aperture in a barrier comprises a valve body including a pin and having a continuous sealing surface surrounding at least one opening through the valve body, and a diaphragm of resilient material. The diaphragm has an opening surrounded by an inner margin and is disposed with the pin extending through the opening and with a main surface presented towards the continuous sealing surface of the valve body. The inner margin of the diaphragm is in a state of tension around the pin of the valve body, whereby the diaphragm is prestressed to a condition in which the main surface of the diaphragm engages the sealing surface of the valve body.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: December 7, 2004
    Assignee: Keamark, Inc.
    Inventors: William R. Marble, Charles C. Kirkham
  • Publication number: 20040187924
    Abstract: A pressure control valve (10; 70) for a packaging container is comprised of a supporting body (11; 71) and a membrane (12; 72). The supporting body (11; 71) has a recess (14; 74) in which the membrane (12; 72) is disposed in an axially captive fashion in the supporting body (11; 71) either by means of gluing or by means of securing projections (81). The invention also describes a device (50) for attaching the pressure control valve (10; 70) to a material web (2, 88). The device (50) has a stroke die (51) and a sealing die (52) that cooperates with the stroke die (51) and contains a needle holder (60) for producing holes (63) in the material web (2, 88).
    Type: Application
    Filed: February 18, 2004
    Publication date: September 30, 2004
    Inventors: Herbert Stotkiewitz, Juergen Haak, Thomas Fischer
  • Publication number: 20040099310
    Abstract: A microfluidic device adapted such that the flow of fluids within the device is controlled by different surfaces of the device having different surface characteristics. Preferably the device comprises a substrate not formed from a hydrated oxide material. The present invention relates to a method for presenting an analyte of a liquid sample as an MS-analyte to a mass spectrometer. More particularly, the method comprises the steps of applying a liquid sample containing the analyte to a sample inlet port of a microchannel structure of a microfluidic device, said structure also comprising an outlet port (MS-port) that is capable of being interfaced with a mass spectrometer, passing the analyte to the MS-port thereby transforming it to an MS-analyte, and presenting the MS-analyte to mass spectrometer via the MS-port.
    Type: Application
    Filed: November 18, 2003
    Publication date: May 27, 2004
    Inventor: Per Andersson
  • Patent number: 6494687
    Abstract: A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is provided that the surfaces on the bottom of the pump holding plate and the top of the metering channel plate are made as adjoining sealing surfaces, forming a seal, that, in the pump holding plate, there is a bypass channel with outlet openings in the sealing surface on the bottom of the pump holding plate for each metering pump and that by the relative displacement of the pump holding plate and the metering channel plate with respect to one another, the outlet openings of the bypass channel can be moved into a position in which the bypass channel connects the respective metering channel to the respective supply channel in the metering channel plate.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: December 17, 2002
    Assignee: Brand GmbH + CO KG
    Inventors: Andreas Lang, Peter H. Mahler
  • Patent number: 6468060
    Abstract: The seat of a suction valve of a reciprocating compressor is modified to limit the radial extent and thereby the area in which an annular oil film can be established between the valve and the valve seat. The preferred radial extent of the seating surface is 0.014 to 0.018 inches and the preferred ratio of the area of the suction valve seat to the passage therethrough is in the range of 13% to 25%.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: October 22, 2002
    Assignee: Carrier Corporation
    Inventors: Michael J. Dormer, Bruce A. Fraser, Wayne P. Beagle, Peter F. Kaido, Kyle D. Wessells
  • Patent number: 6309194
    Abstract: The seat of a suction valve of a reciprocating compressor is modified to limit the area in which an annular oil film can be established between the valve and the valve seat. The seat is configured to limit the oil film from 3% to 33% of the total inlet port opening. In a modified embodiment gas at discharge pressure exerts an opening bias to the suction valve at the end of the discharge stroke.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: October 30, 2001
    Assignee: Carrier Corporation
    Inventors: Bruce A. Fraser, Peter F. Kaido, Michael J. Dormer, Wayne P. Beagle, Kyle D. Wessells, Foster P. Lamm
  • Patent number: 6220294
    Abstract: An improved switching valve has a valve body, a valve control stem, an upper control valve unit and a lower control valve unit, a seal cap and a locking cap. The valve body and the valve control stem are integrally formed of plastics. The lower control valve unit is provided with oil reservoir cavities and oil grooves so as to permit the upper control valve unit and the lower control valve unit to be lubricantly engaged with each other. The flexible seal cap has tapered flange and a concentrically-ribbed bottom surface so that it can be better sealed in operation. The assembly of the switching valve is simple and speedy and the operation thereof is smooth and durable.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: April 24, 2001
    Assignee: Chung Cheng Faucet Co., Ltd.
    Inventor: Hsi-Chia Ko
  • Patent number: 6102680
    Abstract: In addition to seating on its valve seat during the combined compression and discharge stroke, the suction valve seats on the structure associated with the valve seat which has at least one shallow recessed area. In seating on its valve seat, the suction valve seats on the structure defining the shallow recesses to trap fluid therein. The recesses serve to reduce the area available for adhesion and the trapped fluid pressure provides an opening bias to the suction valve. If necessary, or desired, restricted communication between the compression chamber and the shallow recess can take place to provide a higher pressure in the recess at the time of transition from discharge to suction.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: August 15, 2000
    Assignee: Carrier Corporation
    Inventors: Bruce A. Fraser, Michael J. Dormer
  • Patent number: 6099275
    Abstract: A spring must be engaged and deformed by the suction valve in order for the suction valve to seat. The spring provides an opening bias to the suction valve with negates most, if not all, of the effects of adhesion due to the presence of a thin oil film between the suction valve and suction valve seat when the suction valve is closed. Accordingly, the opening of the suction valve takes place sooner in the suction stroke and is essentially solely responsive to the differential pressure across the suction valve.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: August 8, 2000
    Assignee: Carrier Corporation
    Inventors: Bruce A. Fraser, Kyle D. Wessells
  • Patent number: 6019122
    Abstract: A membrane-type inflation nozzle applicable to an inflatable envelope. A release sheet is disposed between two nozzle membranes at an opening of the nozzle. An adhesive material is disposed between inner membrane walls of the opening of the nozzle. One end of the release sheet is positioned between the adhesive material and the other membrane wall. The other end of the release sheet extends out of the opening. When inflating the envelope, the release sheet is torn away from the nozzle opening and then the envelope is fully inflated. Therefore, an internal pressure of the envelope makes the nozzle self-close. In addition, the adhesive material at the nozzle opening is able to adhere corresponding inner membrane walls to each other so as to achieve a more tightly air-sealing effect.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: February 1, 2000
    Inventor: David Chen
  • Patent number: 6015601
    Abstract: The present invention relates to a self-sealing flexible plastic valve for a non-latex balloon, to a balloon incorporating such a valve, to a method of manufacturing such a valve, and to a method of manufacturing a balloon incorporating such a valve. The valve is made from two flexible plastic strips, bonded together along the side edges to define a valve passageway or tube, and having an open inlet end and an open outlet end. The inlet end of one or both valve strips flares or otherwise curls outwardly to facilitate opening of the valve to insert a gas supply mechanism to inflate the balloon.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: January 18, 2000
    Assignee: Convertidora Industrial S.A. de C.V.
    Inventor: Arturo Verduzco Garcia
  • Patent number: 5992442
    Abstract: A pressure relief valve for use with flexible containers holding coffee, especially ground coffee, is disclosed. The valve incorporates a unique two piece structural arrangement that requires a low level of precision compared to similar valves. The valve comprises a valve body including a valve chamber having a resilient diaphragm located therein for opening and closing the valve. A set of valve retainers formed integral with the valve body ensure that the diaphragm remains within the valve chamber. A viscous liquid helps ensure an air-tight seal and also acts to retain the diaphragm against a valve seat within the valve chamber. Inlet slots are sized and shaped to effectively prevent coffee grounds from entering the valve without need of a filter or filter paper.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: November 30, 1999
    Inventors: Edward F. Urquhart, Mark A. Honnell
  • Patent number: 5881759
    Abstract: An air-ventilating valve is adapted to allow the ambient atmosphere to enter a conduit when the ambient pressure exceeds the pressure of gas in the conduit by a essentially predetermined amount, and which also blocks the release of gas from the conduit to the ambient atmosphere. The valve includes two generally coaxial upstanding valve seat projections (6, 7) which lie essentially in a mutually common plane, and a vertically movable valve body (20) which includes a ring-shaped sealing element (4) which bridges an annular gap (5) between the upstanding projections (6, 7) when the valve is closed and sealingly abuts respective sealing projections (6; 7). The valve body (20) is adapted to move to a valve closed position under the influence of gravity. At least one upstanding projection (6, 7) is formed by two radially separated ridges (31, 32) which define an annular trough (33) therebetween. The ridges (31, 32) are both intended to lie essentially tangential to the sealing element (4) when the valve is closed.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: March 16, 1999
    Assignee: AB Durgo
    Inventor: Bjorn Andersson
  • Patent number: 5623957
    Abstract: A valve for controlling a gas or liquid flow, has an admission and a discharge with a valve seat, a valve part displaceable relative to the valve seat, and a seal therebetween, whereby the valve part presses the seal against the valve seat in one position and thus interrupts the flow. In order to obtain a valve of this type that has a simple structure and exhibits an extremely high sealing power over a comparatively long time span, a liquid having such properties that it is insoluble in the liquid or the gas that flows through the valve serves at least partially as a seal.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: April 29, 1997
    Assignee: Siemens-Elema AB
    Inventor: Anders Lekholm
  • Patent number: 5520209
    Abstract: The present invention discloses a fluid relief device for relieving pressure of a fluid stored in a container or tank, or fluid used in a piece of equipment. In one aspect such a device has a body member with a primary channel therethrough in communication with a container of a contained fluid under pressure. When the pressure of the contained fluid under pressure exceeds a predetermined level, the pressure of the contained fluid moves a cover which is sealingly in place to close off the primary channel. During normal conditions the force of the contained fluid is insufficient to move the cover and leakage of the contained fluid past the cover is inhibited by the provision of a barrier fluid supplied into a barrier fluid chamber to oppose the contained fluid, the barrier fluid at a pressure greater than the normal pressure of the contained fluid.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: May 28, 1996
    Assignee: The Dow Chemical Company
    Inventors: James R. Goins, John W. Ogle, James R. Ogle
  • Patent number: 5427839
    Abstract: Overpressure valves for packaging containers are supplied in a roll, transported in this form to a packaging machine, separated here and attached to packaging containers by means of an adhesive coated surface. For this purpose the overpressure valves have a layer of emulsion bonding on their underside. To prevent individual layers of the roll from sticking together, the overpressure valves have an adhesive-repelling layer on their top side. The overpressure valves are connected to one another in one piece and in a row, and are separated consecutively in a packaging machine.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: June 27, 1995
    Assignee: Robert Bosch GmbH
    Inventors: Norbert Buchner, Klaus Domke, Manfred Reichert, Herbert Stotkiewitz, Bernd Wilke, Sabine Zimmermann, Kuno Lemke, Guenther Voegele
  • Patent number: 5375622
    Abstract: A multiport fluid flow control valve, particularly for use in a regenerative incinerator system for treating process emissions to remove volatile organic combustibles (VOCs). A valve housing has at least three main conduit connection openings. A butterfly valve element rotatable within the housing on a valve element axis has at least two radially-extending rectangular wings such that different pairs of the main conduit connection openings are in deliberate fluid communication depending on the position of the valve element. To accommodate thermal expansion, there is a gap between the peripheries of the valve element wings and an inner surface of the valve housing. Leakage across this gap is prevented by a valve element structure which cooperates with a portion of the valve housing inner surface to define a plenum. The plenum is either pressurized or forcibly vented. In one form, the structure which cooperates to define a plenum comprises a U-shaped channel element on the peripheries of the wings.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: December 27, 1994
    Inventor: Reagan Houston
  • Patent number: 5354133
    Abstract: A relief valve (6) includes a valve body (5), where a covering disk (1) holding a membrane (2) is completely built in. The axial dimension of the relief valve (6) coincides with the thickness of the valve body (5). The upper surface of the relief valve is flat. The application of the relief valve does not modify the external appearance of a container since the faying surface is also flat.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: October 11, 1994
    Inventor: Gino Rapparini
  • Patent number: 5311900
    Abstract: A plug-type gas valve in which a key with a radially extending passageway is supported to rotate between open and closed positions within a bore in a valve body, the passageway establishing communication between diametrically spaced inlet and outlet ports when the key is in its open position. O-rings are positioned in grooves formed in the outer surface of the key above and below the passageway and seal against the wall of the bore in the body to prevent leakage. To lubricate the O-rings and further guard against leakage, grease is injected into pairs of axially extending grease channels formed in the outer surface of the key. To prevent the grease from being blown out of the valve by high pressure when the valve is partially open, one grease channel of each pair communicates only with the upper O-ring groove while the other grease channel of each pair communicates only with the lower O-ring groove.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: May 17, 1994
    Assignee: Mueller Co.
    Inventor: Steven C. Jankowski
  • Patent number: 5232009
    Abstract: A plug-type gas valve in which a key with a radially extending passageway is supported to rotate between open and closed positions within a bore in a valve body, the passageway establishing communication between diametrically spaced inlet and outlet ports when the key is in its open position. O-rings are positioned in grooves formed in the outer surface of the key above and below the passageway and seal against the wall of the bore in the body to prevent leakage. To lubricate the O-rings and further guard against leakage, grease is injected into pairs of axially extending grease channels formed in the outer surface of the key. To prevent the grease from being blown out of the valve by high pressure when the valve is partially open, one grease channel of each pair communicates only with the upper O-ring groove while the other grease channel of each pair communicates only with the lower O-ring groove.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: August 3, 1993
    Assignee: Eclipse, Inc.
    Inventor: Steven C. Jankowski
  • Patent number: 5048555
    Abstract: A process and a device are useful for protecting and supporting a seal in a valve arrangement. The device comprises a closure member designed as a slide gate having a translational or rotational movement, a seat region of the valve housing parts corresponding to said closure member, a closure part which can slide in the direction of the degree of freedom of the closure member, and a seal or sealing position which is effective between the closure member and the seat region or which co-operates with the closure part. Said process and device ensure, amongst others, that the seal in a valve arrangement of the type described in the introductory part is protected and supported in positions other than the closed position. To this end, the load on the seal or sealing position which ensures sealing in the closed position of the valve arrangement is applied by the closure part in positions other than the closed position.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: September 17, 1991
    Inventors: Hans O. Mieth, Erich Schlotterbeck
  • Patent number: 4974707
    Abstract: A shock absorber with a variable damping characteristic has a piston which is reciprocable in a cylinder to divide the oil-filled internal space of the cylinder into two chambers. The chambers are connectable to each other by one or more passages so that oil can flow between the chambers in response to movement of the piston relative to the cylinder and/or vice versa. The piston has several bypasses each of which is controlled by an adjustable electrically operated regulating valve. In order to enhance the accuracy of regulation of flow of oil between the chambers by way of the bypasses, the piston is formed with channels which supply oil between the mobile valving elements and the seats of the valves to thus reduce or eliminate friction between such parts.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: December 4, 1990
    Assignee: Korber AG
    Inventors: Helmut Neumann, Werner Komossa
  • Patent number: 4890637
    Abstract: A one way valve for flexibly walled packages is disclosed. The valve comprises a unitary valve body having an outer face with a raised anvil having a first valve seat surrounding a central depression. A generally planar surface is provided adjacent the anvil forming a second valve seat. The second valve seat terminates in an outer wall which includes a first marginal portion extending towards the anvil and a second marginal portion extending away from the anvil. An elastic diaphragm is also provided which seats on the second valve seat with at least a part of the diaphragm being below the first marginal portion of the outer wall. At least one aperture is provided through the valve body from the outer face to an inner face. The aperture opens at one end onto the second valve seat and at the other end onto an indented portion of the inner face. A filter is housed in the indented portion across the other end of the aperture opening.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: January 2, 1990
    Assignee: Flavorcoffee Co. Inc.
    Inventor: Adolf Lamparter
  • Patent number: 4886424
    Abstract: A multi-piston swash plate type compressor for an air-conditioning system used in a vehicle such as an automobile, including a cylinder block body having a swash plate chamber formed therein for receiving a swash plate and cylinder bores formed therein for receiving pistons which are reciprocated by rotation of the swash plate. The compressor has a suction chamber which is fed with a refrigerant including lubricating oil from an evaporator of the air-conditioning system and a discharge chamber which feeds the compressed refrigerant to a condenser of the air-conditioning system. When the compressed refrigerant is discharged from the cylinder bore into the discharge chamber through a discharge reed valve, all of the discharged refrigerant is impinged on the peripheral and inner wall so as to separate the lubricating oil from the refrigerant, whereby an effective damping and sealing oil layer is formed between the discharge reed valve and the valve seat thereof.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: December 12, 1989
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Hayato Ikeda, Hisato Kawamura, Shinichi Ishihara
  • Patent number: 4842007
    Abstract: A valve for an inflatable body has the inside of a valve member within the body having opposed wall portions normally superposed on one another and movable upon forcible separation. The inside of the opposed wall portions are coated with a viscid, non-hardening material preferably a polyglycol which minimizes leakage of helium and a like gas through the valve when the body is inflated.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: June 27, 1989
    Assignee: Guard Associates, Inc.
    Inventor: Richard J. Kurtz
  • Patent number: 4842026
    Abstract: A machine for transferring metered quantities of viscous materials from a source of such materials into successive receptacles has a tubular housing with inlets and outlets disposed diametrically opposite each other. The housing confines a rotary metering device having an axially extending chamber and an opening which communicates with the inlet in one angular position and with the outlet in another angular position of the metering device. A piston in the metering device draws flowable material from the source into the chamber in the first angular position and expels such material from the chamber into a receptacle in the second angular position of the metering device. The housing and the metering device have adjacent frustoconical surfaces and the metering device is movable axially to establish between such surfaces a frustoconical clearance for admission of a liquid or gaseous cleaning fluid while the metering device remains in the interior of the housing.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: June 27, 1989
    Assignee: Lieder-Maschineabu GmbH & Co. KG
    Inventors: Manfred Nordmeyer, Helmut Grune
  • Patent number: 4838325
    Abstract: In an arrangement for a filling valve on a packing machine after-dripping is prevented by providing that the outside surfaces of the valve which can come into contact with the contents are cleaned with the help of a pressure fluid during operation of the machine. An arrangement in accordance comprises a filling valve whose valve body is provided with a channel for the supply of pressure fluid and an outlet opening situated at the lower end of the valve body which conducts the pressure fluid and causes it to flow along the underside of the valve body so that any residue of the contents is effectively flushed away.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: June 13, 1989
    Assignee: Tetra Dev-Co
    Inventor: Giorgio Bordini
  • Patent number: 4830041
    Abstract: A reelable flow stopper for plugging fluid flow within a pipe having a guide housing with an enclosed guide channel. A guide housing sealably secures to at least one side of a full port gate valve and the opposite side of the full port gate valve is in communication with the inside of the pipe. The pipe has an access hole in a pipe wall of the pipe. The guide channel is in communication with the access hole. At least one guide prong of a fork extends into the pipe. The guide prong is secured to the guide housing. A roller bearing is rotably mounted to each guide prong of the fork. A take-up spool is secured to the bearing and the take-up spool rotates with respect to each guide prong of the fork. A stopper tape has a spool end secured to the take-up spool and an opposite end contacting the guide pins located within the guide housing. The guide pins route and guide the stopper tape into and out of the pipe. A crank is secured to a crank gear. A drive gear is secured with respect to the take-up spool.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: May 16, 1989
    Assignee: Institute of Gas Technology
    Inventors: Dennis L. Sadowski, Narayan C. Saha
  • Patent number: 4726391
    Abstract: The invention relates to a rotary switching device having a conical chamber permitting modification of the supply to the apparatus to which it is allocated, by reversing the fluids or the directions of circulation of the fluids in the ducts.
    Type: Grant
    Filed: July 15, 1986
    Date of Patent: February 23, 1988
    Assignee: Aluminium Pechiney
    Inventor: Jean Barra
  • Patent number: 4667709
    Abstract: The invention relates to an arrangement for dosingly filling of fluent or pasty filling material into a container. The arrangement has a housing in which a control element is rotatably mounted. A feed and outlet passage for the filling material is alternately unblocked and a reciprocating dosing piston is provided in the housing. For purposes of achieving a compact and simple construction and a simple assembly, as well as for achieving a good cleaning, the housing is hermetically sealed on all of its sides and the control element is in the form of a rotational cylinder operatively mounted in the region of the feed and outlet passages for the filling material. The dosing cylinder is coaxially mounted with respect to the rotational cylinder and is provided with a piston rod so that the dosing piston is slidably movable within the housing.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: May 26, 1987
    Assignee: Benz & Hilgers GmbH
    Inventors: Georg Fischer, Herbert Augst, Lutz Langenhahn