Particular Head And Seat Cooperation Patents (Class 251/333)
  • Patent number: 7228875
    Abstract: Sealing and breathing valve assembly for accumulators comprising: at least one substantially tubular collar associated to the cover of said accumulator and suitable for connecting the external environment with one or more breathing ducts made in said cover; an elastic cap of a substantially tubular shape closed by a bottom amovably coupled to the external surface of said tubular collar. Said cap has at least one first part of a substantially cylindrical surface next to said bottom with a thickness reduced with respect to the remaining part next to the bottom of said cap, said first cap having a radial elastic deformation with respect to the remaining part working as a sealing function.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: June 12, 2007
    Inventor: Franco Stocchiero
  • Patent number: 7222637
    Abstract: A connector housing of a valve-equipped connector is integrally formed from a tube connection section at a first axial side; a pipe insertion section at a second axial side; and a valve housing section between the tube connection section and the pipe insertion section. The valve housing section is formed with an adequately large inner diameter. A main valve body and a compression coil spring for biasing the main valve body to the first axial side so that it abuts the inner surface of the housing are stored in the valve housing section. A cylindrical bushing is fitted to the first axial side of the pipe insertion section of the connector housing, and a valve cap for receiving a second axial end of the compression coil spring is formed integrally at the first axial end of the cylindrical bushing.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: May 29, 2007
    Assignee: Honda Motor Co., Ltd.
    Inventor: Atsuo Miyajima
  • Patent number: 7222837
    Abstract: A valve body having at least one internal hollow or space comprises two separately formed portions joined by at least one cylindrical web. Internal space may communicate with space outside the valve body via a fluid passage, and internal space may be filled with a substantially incompressible flowable substance to facilitate pressure equalization across the valve body. Forging or casting valve body portions to near-net-shape prior to joining minimizes machining necessary to achieve a final desired shape. Increased valve durability and reduced metal wear arise from the reduced valve body weight and correspondingly reduced impact loading as the valve body moves to seal against a valve seat. A single-durometer or dual-durometer elastomeric seal may be cast and cured in place in a peripheral integral seal retention groove, coupled thereto in part through welding flash protruding into the groove and/or through at least one serration in the groove.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: May 29, 2007
    Inventor: George H. Blume
  • Patent number: 7182056
    Abstract: A poppet valve for use in an internal combustion engine. The poppet has a partially-inverted perimeter shape which nevertheless substantially maintains the curtain area of the valve. These improved valves pack more efficiently into the combustion chamber roof area than would conventional, circular-perimeter poppet valves. For the same size combustion chamber, significantly greater total curtain area is achieved, improving engine performance. Valve weight is greatly reduced, enabling the use of lighter return springs, camshafts, desmodromic actuators, and so forth.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: February 27, 2007
    Assignee: MotoCzysz LLC
    Inventor: Michael Czysz
  • Patent number: 7168679
    Abstract: An electromagnetic valve comprising has a valve seat, a valve element movable relative to the valve seat so as to open or close a hydraulic fluid passage interposed therebetween and a plunger movable together with the valve element relative to the valve seat, wherein the valve element includes a sealing portion having an arc-shaped vertical cross section that contacts with the valve seat and an expanding diameter portion having a diameter gradually increasing in a direction from the sealing portion toward the plunger.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: January 30, 2007
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Takaomi Shirase, Yoshiyuki Takamatsu, Masaya Shigeta
  • Patent number: 7108244
    Abstract: A valve arrangement (10) for reducing the instability of fluid flow in a compressible flow governor valve includes a cutoff plug (12) with a lateral concave surface (14) and an end portion (16) having a substantially circular cross section, and a seat (30) with a convex surface (32). The lateral concave surface (14) and the end portion (16) of the cutoff plug (12) define an abrupt cutoff corner (18). The radius (re) of the end portion (16) of the cutoff plug (12) is less than the radius (Rs) of the seat (30). The radius of curvature (R) of the seat (30) is less than the radius of curvature (rq) of the lateral concave surface (14) of the cutoff plug (12). The configuration of the cutoff plug (12) and seat (30) enhances the annular flow pattern beneath the cutoff plug (12) at all lift positions thus reducing flow instability.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: September 19, 2006
    Assignee: Elliott Turbomachinery Co., Inc.
    Inventor: James R. Hardin
  • Patent number: 7044442
    Abstract: The invention relates to a valve block (1) for a control device comprising a valve (9) whose valve piston (14) is subjected to the action of a control pressure when in its open position and to the action of a return spring (15) when in its closed position. The closing force of the return spring (15) can be decreased or increased by an actuator, which can be displaced toward a position that increases the closing force and one that decreases the closing force. In order to simplify the displacement or adjustment and to improve reliability, the displacing movement of the actuator (16a) in the direction of movement that increases the closing force of the return spring (15) is limited by a stop element (112) in a position in which the closing force of the return spring (15) reaches its limited maximum value.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: May 16, 2006
    Assignee: Brueninghaus Hydromatik GmbH
    Inventor: Roland Belser
  • Patent number: 7028709
    Abstract: The valve includes a supply portion, a delivery portion and an intermediate fluid chamber; a poppet member is positioned within the fluid chamber and is adapted to move within the chamber, the poppet including a conical seating surface and a rim portion, the rim portion having openings therethrough into the open interior of the poppet, allowing for forward fluid flow through the poppet. A delivery poppet seat and a supply poppet seat are defined at opposite ends of the fluid chamber. The delivery poppet seat is configured so that when the rim portion of the poppet contacts the delivery seat, fluid flow in the forward direction is permitted. The supply poppet seat is configured such that when the conical seating surface of the poppet member contacts the supply poppet seat, backflow through the valve is substantially prevented.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: April 18, 2006
    Inventor: Douglas S. Beck
  • Patent number: 7011294
    Abstract: A vacuum valve comprises a valve housing with a valve opening having a longitudinal axis and a valve seat, a valve plate which is displaceable in a straight line in a displacement direction between an open position in which it releases the valve opening and a closed position in which its contacts the valve seat of the valve housing and closes and seals the valve opening, this valve plate being arranged on at least one valve rod which is displaceable axial to the displacement of the valve plate, a flexible sealing ring which is arranged at a front side of the valve plate or at the valve seat of the valve housing, a sealing surface which is arranged at the valve seat of the valve housing or at the front side of the valve plate and which is contacted by the sealing ring in the closed position of the valve plate, wherein the sealing surface and the sealing ring are arranged in parallel planes which are inclined relative to the displacement direction of the valve plate around an axis extending at right angles to t
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: March 14, 2006
    Assignee: VAT Holding AG
    Inventors: Florian Ehrne, Christof Bachmann, Friedrich Geiser
  • Patent number: 7011081
    Abstract: A cylindrical-walled seat element (50) in a double-pintle (42) EEGR valve (20) is a machined metal part in which two substantially identical apertures (62, 64) collectively span essentially a semi-circumference of the seat element wall (52) and are separated by a narrow axial stabilizer bar (80) in that wall.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: March 14, 2006
    Assignee: Siemens VDO Automotive Inc.
    Inventors: Bernard J. Hrytzak, Tom Maciejowski
  • Patent number: 6997436
    Abstract: A valve for a control system of a vehicle includes a plunger slidably supported in a valve housing. Within the housing is a valve seat member that defines a valve seat configured for engaging the plunger in a closed configuration. The edges of the valve seat member are slightly spaced from the housing, and a resilient support element such as an o-ring is disposed between the valve seat member and the housing to permit lateral motion of the valve seat member relative to a long axis of the plunger as the plunger moves to the closed configuration.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: February 14, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Luis F. Barron, Conrado Carrillo
  • Patent number: 6971405
    Abstract: A check valve for a fuel pump of a vehicle includes a valve housing adapted to be disposed in an outlet member of the fuel pump. The check valve also includes a valve guide disposed within the valve housing and a valve seat disposed within the valve housing and spaced from the valve guide. The check valve further includes a valve member having an aerodynamic shape disposed within the valve housing and having a closed position to engage the valve seat to prevent fuel from flowing through the outlet member and an open position to cooperate with the valve guide to allow fuel to flow through the outlet member.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: December 6, 2005
    Assignee: Delphi Technologies, Inc.
    Inventor: Dale M. Pickelman
  • Patent number: 6966587
    Abstract: A bailer has a check valve housing at its leading end. A free-floating ball in the check valve housing is unseated and admits liquid fluid into the bailer as the bailer enters a body of liquid fluid. The free-floating ball is seated and seals the liquid fluid within the check valve housing against leakage when the bailer is retrieved from the body of liquid fluid. An annular valve seat is formed flush with a leading edge of the check valve housing and the free-floating ball has a diameter only slightly greater than the diameter of the annular valve seat. About half of the free-floating ball extends downwardly from the check valve housing. The structure prevents formation of an annular air pocket at the leading end of the check valve housing so that liquid fluid drained from the bailer is not contaminated by oxygen.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: November 22, 2005
    Inventor: David W. Pratt
  • Patent number: 6932354
    Abstract: The present invention is directed to a valve seal assembly for use in multi-chamber vacuum devices. The seal assembly comprises a door and a deformable seal ring running along the periphery of the door, wherein the seal ring is held in place by a reversibly mounted securing means such as a disk, ring or clamp.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: August 23, 2005
    Assignee: DuPont Dow Elastomers, LLC
    Inventors: Dale Robert Kane, Norihisa Minowa, Kohtaro Takahashi
  • Patent number: 6908049
    Abstract: An annular notch is provided in the body seat associated with the nozzle valve of an ALCO-type diesel injector. The notch extends from (i) an upper edge that is on the seat and is above the imaginary edge that would have been the sac inlet edge had the notch not been provided to (ii) a lower edge below such imaginary edge. The notch has a lowest wall that, at least at the portion of its length where such lowest wall approaches such lower edge, has a given angle-to-vertical of less than 60°.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: June 21, 2005
    Inventor: Frank Deluca
  • Patent number: 6889702
    Abstract: A replaceable valve seat ring for a valve assembly has an annular ring body and an open flow passage extending through the ring body. A seating surface is provided on the ring body adjacent one end of the flow passage. A tool accepting region of the flow passage is formed concentric with and at least partially along the flow passage. The tool accepting region is adapted to receive a standard tool head therein for installing and removing the valve seat ring.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: May 10, 2005
    Assignee: Fisher Controls International LLC.
    Inventors: Randy J. Hall, Ronald C. Burr, Carl D. Miller
  • Patent number: 6851657
    Abstract: A valve operable between a valve close position and a valve open position for a gaseous fuel system includes a housing having a fuel inlet port, a fuel outlet port and a chamber disposed between the fuel inlet port and the fuel outlet port A valve seat is disposed adjacent the fuel outlet port and includes an aperture. The valve further includes a magnetic coil and an armature magnetically coupled to the magnetic coil and disposed with in the housing. The armature is movable in response to the magnetic coil. A piston is coupled to the armature and is movable within the chamber away from the seat when the magnetic coil is actuated in the valve open position. Fuel flows from the inlet port through the chamber to the outlet port. The piston engages the seat when the magnetic coil is deactuated in the valve close position to prevent fuel from flowing from the inlet port to the outlet port. The piston includes a projection or radius for closing the valve seat aperture.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: February 8, 2005
    Assignee: Pinnacle CNG Systems, LLC
    Inventor: Gregg Tawns
  • Patent number: 6843859
    Abstract: A compliant door assembly for use in sealing an opening in a vessel bottom includes a door having a sealing wall, the sealing wall having a contact face moveable into contact with a wall surrounding the vessel bottom. A reinforcing member is moveable into contact with the back face of the sealing wall, thereby reinforcing sealing contact between the contact face and the wall surrounding the opening.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: January 18, 2005
    Assignee: SCP Global Technologies, Inc.
    Inventors: Martin Bleck, Wyland L. Atkins
  • Patent number: 6840270
    Abstract: A low deviation pressure relief valve for a fuel pump consisting of a housing having an elongated bore having a continuous wall, an axis, shoulders arranged on the wall so as to extend toward the axis. A ball in the housing has a diameter at least less than the diameter of the bore and a ball retainer located in the bore upstream from the shoulders forms a ball seat by pre-coining process. The ball is smaller than the retainer seat in diameter to ensure an edge seal with the ball. A spring coaxial with the axis located down stream from the ball retainer and supported on the shoulders, and the ball is located between the spring and the ball seat wherein low flow restriction is created and reduced pressure variation is created as fluid flows past the ball and less buckling in the spring is created by guide ribs.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: January 11, 2005
    Assignee: Visteon Global Technologies, Inc.
    Inventors: DeQuan Yu, Stephen T. Kempfer, Christopher C. Lobombarbe, David J. Rink, David M. Dokas, Paul E. Fisher, Jeff Moll
  • Patent number: 6832626
    Abstract: A check valve construction is provided which includes a housing having a first flow path and a second flow path. Liquid flow is controlled within the first and second flow path by movable plungers (22, 24) having a sealing surface and a plurality of prongs that control the length of movement of the plunger within the housing. One of the plungers permits liquid flow while the other of the plungers prevents liquid flow in response to pressure change within the flow paths.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: December 21, 2004
    Assignee: Mykrolis Corporation
    Inventor: Iraj Gashgaee
  • Patent number: 6823893
    Abstract: A non-return valve has a valve housing with a flow channel having a vertical channel section, an inlet aperture, an outlet aperture and a blocking device closing the flow channel. The blocking device comprises a valve seat surrounding the outlet aperture and a valve disc movable between an open position and a closed position. The valve disc is guided in the valve housing via a guide surface on its outer circumference, and comprises flow apertures radially outside its sealing surface. The valve disc possesses a diameter that becomes smaller towards the valve seat, forming an inclined external surface. Flow apertures start from the inclined external surface and converge in the direction facing away from the sealing surface, and are disposed in a uniform distribution over the circumference of the valve disc.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: November 30, 2004
    Inventor: Axel Hebmuller
  • Publication number: 20040232369
    Abstract: An annular valve seat is formed in a connecting path connecting a first main port and a second main port, a circular flow path wall having a diameter greater than a seat diameter is formed around the valve seat so as to surround the valve seat, a circular outer peripheral wall having a diameter greater than the seat diameter and smaller than a diameter of the flow path wall is formed at a disc-shaped valve member, and a restricted flow path is formed between the flow path wall and the outer peripheral wall when the valve member is fitted in the flow path wall.
    Type: Application
    Filed: March 29, 2004
    Publication date: November 25, 2004
    Applicant: SMC Corporation
    Inventor: Masao Kajitani
  • Patent number: 6792973
    Abstract: A gas tight shut-off valve for a material charging or discharging lock includes a valve closing element that is movable relative to a valve a seat, between a first position which the valve closing element and the annular valve seat can be axially pressed together, and a second position in which the valve closing element is located laterally of the discharge opening in the valve seat. A soft sealing element is associated either with the annular valve seat or with the valve closing element. The valve further includes a heat protecting element which is movable between a first position in which it covers the soft sealing element when the valve closing element is in its second position, and a second position in which it uncovers the soft sealing element.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: September 21, 2004
    Assignee: Paul Wurth S.A.
    Inventors: Emile Lonardi, Patrick Hutmacher
  • Patent number: 6789779
    Abstract: A hydraulic part of a magnet valve is received in a bore of a valve block. The hydraulic part is secured to the valve block with a calked heel of a securing bush that is slipped onto a guide sleeve of the hydraulic part. The securing bush rests on an annular shoulder of the guide sleeve and engages a jacket wall of the guide sleeve with a press fit, and one edge of the securing bush is adapted to a rounded-out throat between the jacket wall and an end wall of the annular shoulder by means of plastic deformation. A valve sleeve engages a portion of the bore of the valve block with a press fit. The calked heel, the plastically deformed edge of the securing bush, and the press fit of the valve bush seals that seal off against fluid are achieved without using additional rubber-elastic sealing means.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: September 14, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Werner Wilde, Friedrich Megerle, Dieter Kawa, Ulrich Sickinger, Harald Speer, Siegfried Fritsch, Rainer Menzenbach, Guenther Schnalzger, Andreas Reize, Robert Stoehr, Jochen Reinhold, Thomas Butz, Johann Herr, Ulrich Pechthold, Christian Laier
  • Patent number: 6789783
    Abstract: A fuel injection valve contains a piston-shaped valve needle for closing at least one injection opening at the combustion chamber end of the bore. A conical valve seat at the combustion chamber end of the bore is contacted in the closed position of the valve needle by a valve sealing surface on the of valve needle in order to seal the at least one injection opening. The valve sealing surface includes a first conical surface and a second conical surface and the valve seat contains a first annular groove, which extends in a radial plane of the valve bore, and a second annular groove, which is disposed downstream of and parallel to this first annular groove.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: September 14, 2004
    Assignee: Robert Bosch GmbH
    Inventor: Friedrich Boecking
  • Patent number: 6779554
    Abstract: The invention relates to a backflow preventing check valve (1) comprising a housing (2) in which a closing member (3) is arranged. The closing member is moveable between a closed position and an open position and is disposed on a valve seat with a sealing area in the closed position. A pressure-compensation device is provided for when the backflow preventing check valve is closed and a volume of fluid is sealed off on the outflow side. In order to counteract an undesireable high pressure load when the check valve is closed, the outflow area defined by the closing body (3) in a closed position is joined to at least one pressure compensation chamber (6) whose receiving volume corresponds approximately to the expansion volume of the sealed-off fluid and which is disposed outside the area which is defined on the outflow side.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: August 24, 2004
    Assignee: Dieter Wildfang GmbH
    Inventors: Christoph Weis, Martin Fangmeier
  • Patent number: 6772993
    Abstract: Disclosed is a plug and seal assembly comprising an annular seat ring and a plug head for use in a fluid control valve utilized for regulating a flow of high-pressure fluid. The seat ring includes first, second, and third sealing discs alternately stacked with respective first, second and third resilient bearing discs. The inner annular edges of the first, second and third sealing and bearing discs collectively define a conical sealing surface. The plug head defines stepped first, second and third ramps, each ramp having a truncated conical shape of equal half-angle with the conical sealing surface half-angle being larger than the ramp half-angle. The direct engagement of the first, second and third ramps against respective ones of the sealing discs acts to deform the respective ones of the bearing discs to create three fluid-tight seals therebetween to reduce the risk of leakage of the valve when in a closed position.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: August 10, 2004
    Assignee: Control Components, Inc.
    Inventors: Stanley F. Miller, Curtis George Sterud
  • Publication number: 20040089836
    Abstract: A gate valve assembly includes a valve seat and a valve. The valve seat includes a passage opening and a contacting region surrounding the passage opening. The valve includes a groove located on a marginal region of the valve, and a sealing body positioned in the groove. The passage opening is closed by covering the valve over the valve seat, and an upper surface of the sealing body is tightly contacted with the contacting region. Therefore, the valve is prevented from rubbing against the valve seat and producing particles.
    Type: Application
    Filed: March 20, 2003
    Publication date: May 13, 2004
    Inventor: Wei-Yueh Wu
  • Patent number: 6715700
    Abstract: A poppet type solenoid valve used in an electronically controllable vehicle hydraulic brake system is proposed which suppresses sound and vibration and simultaneously eliminates malfunction. For these effects, the following conditions have to be satisfied: FSP/(r2−B2)<67  (1) FSP·St2/(r2−B2)>29  (2) wherein FSP is the force of the spring, r is the tip diameter of the poppet, St is the stroke of the poppet, and B is the diameter of the area of the poppet where the valve-opening force by hydraulic pressure does not work on the poppet under the Bernoulli effect.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: April 6, 2004
    Assignee: Sumitomo (SEI) Brake Systems, Inc.
    Inventors: Koichi Okamura, Keita Nakano
  • Patent number: 6708951
    Abstract: An annular sealing device having a positive stop to prevent over pressurization on the sealing device. The annular sealing device includes a substantially rigid support member having at least one substantially flat outer surface portion. There is a generally round cavity formed in the substantially rigid support member adjacent the at least one substantially flat outer surface. This generally round cavity has a first predetermined diameter and a predetermined depth. A generally round elastomeric sealing member having a predetermined thickness and a second predetermined diameter is disposed in the generally round cavity. Elastomeric sealing member has a substantially flat face engageable with a predetermined surface to be sealed. A stop means is engageable with at least a portion of the substantially flat outer surface portion of the substantially rigid support member for preventing undue penetration of the surface to be sealed into the generally round elastomeric sealing member.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: March 23, 2004
    Assignee: Westinghouse Air Brake Technologies Corporation
    Inventors: Charlie E. Jones, Michael V. Kazakis, Brian N. Cooke
  • Publication number: 20040051072
    Abstract: A valve arrangement (10) for reducing the instability of fluid flow in a compressible flow governor valve includes a cutoff plug (12) with a lateral concave surface (14) and an end portion (16) having a substantially circular cross section, and a seat (30) with a convex surface (32). The lateral concave surface (14) and the end portion (16) of the cutoff plug (12) define an abrupt cutoff corner (18). The radius (re) of the end portion (16) of the cutoff plug (12) is less than the radius (Rs) of the seat (30). The radius of curvature (R) of the seat (30) is less than the radius of curvature (rq) of the lateral concave surface (14) of the cutoff plug (12). The configuration of the cutoff plug (12) and seat (30) enhances the annular flow pattern beneath the cutoff plug (12) at all lift positions thus reducing flow instability.
    Type: Application
    Filed: October 9, 2003
    Publication date: March 18, 2004
    Inventor: James R. Hardin
  • Patent number: 6705589
    Abstract: The valve (10) has a seat valve (27) comprising a hollow cone-shaped valve seat (24) and an hemispherical shutoff element (26). An afflux bore (23) having contact with a pressure-medium inlet (19) discharges centrically into the valve seat (24). A solenoid armature (30) acting upon the seat valve (27) in opening fashion grips a push rod (25) comprising the shutoff element (26). The solenoid armature cooperates with a pole body (42) according to the flat-type armature principle. A preloaded return spring (39) acting on the seat valve (27) in closing fashion is arranged between the pole body (42) and the solenoid armature (30).
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: March 16, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Dirk Hofmann, Hans-Friedrich Schwarz, Gerhard Hahl, Valentin Schubitschew
  • Patent number: 6698449
    Abstract: A replaceable valve seat ring for a valve assembly has an annular ring body and an open flow passage extending through the ring body. A seating surface is provided on the ring body adjacent one end of the flow passage. A tool accepting region of the flow passage is formed concentric with and at least partially along the flow passage. The tool accepting region is adapted to receive a standard tool head therein for installing and removing the valve seat ring.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: March 2, 2004
    Assignee: Fisher Controls International LLC
    Inventors: Randy J. Hall, Ronald C. Burr, Mark D. Stiehl, Carl D. Miller
  • Patent number: 6695280
    Abstract: A device used for pneumatic control, includes a control piston carried in a cylinder. The control piston is mounted so as to be movable in the direction of a longitudinal piston axis, and a primary flow path that can be closed by the control pressure passes through the cylinder. The control piston is provided with a control surface that faces a control chamber of the cylinder and that is designed to transmit a control force to the control piston. The control piston includes a piston shank whose cross-sectional area is dimensioned so as to be essentially equal to a cross-sectional area of a flow orifice of the primary flow path that can be closed by the control piston and that faces an interior cylinder chamber.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: February 24, 2004
    Assignee: SIG Corpoplast GmbH & Co. KG.
    Inventors: Michael Litzenberg, Klaus Vogel
  • Patent number: 6691982
    Abstract: The invention relates to a valve, comprising a valve body for controlling a medium flowing through the valve, a valve housing (3), in which the valve body (1), which has at least one gasket (4) for sealing cooperation with the valve housing (3) or where appropriate with a cage (5) arranged in the valve housing, is axially displaceable by a spindle (6) in the direction towards and from a valve seating (7) in the valve. The gasket (4) extends peripherally around the circumference of the valve body (1) and is expandable in the radial direction to tight abutment against the valve housing (3) or the cage (5) arranged in the latter through axial pressing of at least one press member (9′) acting on the gasket (4) when the valve body (1) is just before and/or in its closing position.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: February 17, 2004
    Assignee: CCI Valve Technology AB
    Inventor: Sven-&angst;ke Jacobsson
  • Patent number: 6668861
    Abstract: A pneumatic valve assembly including a valve body having an inlet port in fluid communication with a source of pressurized air and a valve bore extending axially within the valve body with a valve member movable between predetermined positions within the valve bore. The valve member selectively movable to direct a flow of pressurized air from the inlet port through the valve bore to an outlet port. A valve element is disposed upon the valve member having an angular valve sealing surface, and a valve seat is defined in the valve bore formed at an oblique angle to provide a sealing contact with the valve sealing surface when the valve member is in a closed position thereby interrupting said flow of pressurized air.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: December 30, 2003
    Assignee: MAC Valves, Inc.
    Inventor: Kevin C. Williams
  • Patent number: 6668853
    Abstract: A pressure relief valve has a gasketed main body fastened to a vessel wall adjacent to a vent port, the body having a recess surrounding the port which receives a plastic insert removably coupled to the body by a retaining ring fastened to the main body. The insert defines a passage communicating with the port and a valve seat engageable by a seal assembly for closing the valve. The seal assembly includes an annular retainer for a seal O-ring and a plug receivable through the retainer and into a socket in a valve stem, which is spring-biased against the retainer and is guided in a guide assembly removably mounted on the main body. The insert is formed of plastic and the retainer and plug may also be formed of plastic and can be readily field-removable by simply unbolting the housing from the vessel and unfastening the retaining ring. The guide and bias assemblies need not be disassembled.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: December 30, 2003
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Robert H. Dean
  • Patent number: 6637449
    Abstract: A valve seat structure is secured to an outlet end of a passing pipe installed in an exhaust muffler. The valve seat structure includes a flat seat surface portion which extends around the outlet end of the passing pipe. A valve plate structure is pivotally connected to the valve seat structure. The valve plate structure includes a valve plate portion and a flat sealing portion which forms a peripheral part of the valve plate portion. The valve plate structure has a close position wherein the valve plate portion closes the outlet end of the passing pipe having the flat sealing portion entirely pressed against the flat seat surface of the valve seat structure and an open position wherein the valve plate portion opens the outlet end of the passing pipe having the flat sealing portion separated from the flat seat surface. A biasing structure biases the valve plate structure to assume the close position.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: October 28, 2003
    Assignee: Calsonic Kansei Corporation
    Inventors: Tadashi Nagai, Kai Shiraishi
  • Publication number: 20030132413
    Abstract: A fuel injection valve contains a piston-shaped valve needle for closing at least one injection opening at the combustion chamber end of the bore. A conical valve seat at the combustion chamber end of the bore is contacted in the closed position of the valve needle by a valve sealing surface on the of valve needle in order to seal the at least one injection opening. The valve sealing surface includes a first conical surface and a second conical surface and the valve seat contains a first annular groove, which extends in a radial plane of the valve bore, and a second annular groove, which is disposed downstream of and parallel to this first annular groove.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 17, 2003
    Inventor: Friedrich Boecking
  • Patent number: 6517076
    Abstract: The invention concerns a new seal system for resolving the problem of the contamination of special fluids carried in pumps and moreover providing improved sealing by virtue of its special geometry and design. According to the invention, one of the elements to be connected can replace the seal owing to the fact that the seal system includes a combination of two elements to be connected with a fine film ring, one of the elements to be connected having a geometry able to effect a double indentation on the film ring. The invention may be used in pumps and circuits for fluids of the semiconductor industry. The three elements of the seal system, including the pump body, tube, and film ring, may be made of PFA.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: February 11, 2003
    Assignee: Saint-Gobain Performance Plastics Corporation
    Inventor: Frederic S. Menage
  • Patent number: 6510868
    Abstract: The subject application is directed to a compressor valve having a valve seat, a valve guard and a sealing plate with contoured sealing surfaces, the valve seat having defining inlet flow ports for admitting a controlled medium into the valve, the lower surface of the valve seat including at least one seating surface, the a valve guard having a recessed area and defining outlet flow ports for discharging a controlled medium from the valve, the sealing plate being positioned within a cavity between the valve guard and valve seat and moves relative to the lower surface of the valve seat between an open and closed position, the upper surface of the sealing plate defining at least one contoured sealing surface for engaging at least one seating surface of the valve seat along a continuous line of contact when the valve is in the closed position.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: January 28, 2003
    Assignee: Coltec Industrial Products, Inc.
    Inventor: Neil C. Penza
  • Patent number: 6491282
    Abstract: A fuel dispensing nozzle includes an inlet for the fuel being pumped, a spout for dispensing of the fuel, a poppet valve between the inlet and outlet, and a handle which is operable to move the poppet valve between an opened position in which fuel can flow from the inlet to the and a closed position in which fuel is prevented from flowing from the inlet to the spot. The poppet valve includes a valve member having a cap, a seal received on an under side of the cap, and a skirt, which is movable relative to the cap. The seal engages and is disengaged from the valve seat to close and open the valve. The valve member skirt has a sloped surface which engages the seal. The valve skirt is lifted by a valve stem, and when lifted, the valve member skirt engages the seal to progressively lift the seal off the valve seat.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: December 10, 2002
    Assignee: Husky Corporation
    Inventor: Arthur C. Fink, Jr.
  • Publication number: 20020179874
    Abstract: The valve (10) has a seat valve (27) comprising a hollow cone-shaped valve seat (24) and an hemispherical shutoff element (26). An afflux bore (23) having contact with a pressure-medium inlet (19) discharges centrically into the valve seat (24). A solenoid armature (30) acting upon the seat valve (27) in opening fashion grips a push rod (25) comprising the shutoff element (26), which said solenoid armature cooperates with a pole body (42) according to the flat-type armature principle. A preloaded return spring (39) acting on the seat valve (27) in closing fashion is arranged between the pole body (42) and the solenoid armature (30).
    Type: Application
    Filed: July 8, 2002
    Publication date: December 5, 2002
    Inventors: Dirk Hofmann, Hans-Friedrich Schwarz, Gerhard Hahl, Valentin Schubitschew
  • Patent number: 6488050
    Abstract: An electrically-operated plunger-type valve assembly includes a housing, an electromagnetic actuator and a plunger assembly, which is positioned in the housing and supported for movement in the housing. The valve assembly includes a biasing member, which applies a force to the plunger assembly to close the communication between inlet and outlet ports to thereby close the valve assembly. The actuator generates a magnetic field to move the plunger assembly against the biasing member force to move the plunger assembly to control the valve. The plunger assembly includes a seal that seals the communication passage to close the valve when the plunger assembly is moved to its closed position. Pressurized fluid in the inlet port causes the seal to radially seal against the communication passage, which reduces the required biasing member spring force and reduces the energy needed to move the plunger assembly.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: December 3, 2002
    Assignee: Humphrey Products Company
    Inventor: Leonard J. Jabcon
  • Patent number: 6464201
    Abstract: A valve (12) for a motor vehicle air spring (2) having an ancillary volume (6) provides a finely metered continuous opening up to the complete cross section without throttle and a stable performance for flow forces results. The valve (12) is characterized by a star nozzle (50) which includes any desired number of slots nS (52) which mutually intersect and each slot has the length DS (58) and a width sS (56) and the slots are arranged so as to be concentric. The star nozzle peripheral length LUS (64) is increased compared to a round nozzle LUR. For the valve cross section, AVS=LUS·HS applies. The throughput cross section ADS of the star nozzle (50) is so large that it corresponds at least to the cross section AL of the inlet (68) and the outlet (70). A preferably triangular-shaped valley-like recess (66) is provided between each two mutually adjacent ones of the slots (52). The sealing body (40) of the valve (12) is preferably configured as a collar.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: October 15, 2002
    Assignee: Continental Aktiengesellschaft
    Inventor: Heinz Job
  • Patent number: 6457760
    Abstract: A bailer that is substantially leak-free includes an improved valve housing at its lowermost end. A valve body in the form of a solid or hollow hemispherical ball is mounted at the lowermost end of a straight valve stem. The hemispherical valve body seats in a valve seat that matches the contour of the hemispherical exterior surface of the valve body. The valve body has a preselected specific gravity that enables it to float on the surface of the liquid fluid being sampled when the valve body is unrestricted. The valve stem is slideably received within and guided by a central aperture formed in a central hub of a spider member that spans the hollow interior of the valve housing. The spider is supported about its periphery by an annular shoulder formed in the interior sidewalls of the valve housing. The spider is inserted into the valve housing and pressed against the annular shoulder when the bailer is assembled.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: October 1, 2002
    Inventor: David W. Pratt
  • Patent number: 6443420
    Abstract: The solenoid valve has two fluidic connections (3, 4), a solenoid (5) and a core (8) guided in a cylinder (7) within the solenoid body (6). The solenoid valve (1) is opened as a result of the movement of the core (8) when the solenoid (5) becomes magnetized. After disconnection of the solenoid (5), it is closed due to the force of a spring (27). Both the core and the closing device of the valve (1) are pressure-relieved, in that the end face of the core (8) has an effective surface which corresponds to an effective surface (18) at the valve body (14). The elastic main seat seal (20) is contained in the housing (2). The taper-ended main valve seat (13) and the compensation diameter (12) are housed in combination within a movable seat bushing (11).
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: September 3, 2002
    Assignee: Burkert Werke GmbH & Co.
    Inventor: Gerhard Hettinger
  • Patent number: 6431207
    Abstract: A high-pressure fluid control valve is disclosed for operating a fluid-actuated device. Preferably a ball-poppet and frusto-conical valve seat adapted for substantially line-type contact therebetween are provided with an upstream restricted flow area in order to substantially minimize sonic flow damage to the actual sealing surface of the valve seat. Preferably, the ball-poppet is movable within a poppet guide that is allowed to float radially in order to allow the ball-poppet to be substantially self-centering with respect to the valve seat. In addition, cross-over leakage is preferably negated by closing an exhaust ball-poppet just prior to opening a supply ball-poppet.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: August 13, 2002
    Assignee: Ross Operating Valve Company
    Inventor: Charles A. Weiler, Jr.
  • Patent number: 6431209
    Abstract: A high-pressure primary fluid control valve and a multi-pressure selector fluid control valve are disclosed for operating a fluid-actuated device. Preferably a spherical ball-poppet and frusto-conical valve seat adapted for substantially line-contact therebetween are provided with an upstream flow area adjacent the line-contact in order to substantially minimize sonic flow damage to the actual sealing surface of the valve seat by shifting it away from such line-contact seating. Preferably, the ball-poppet is movable within a poppet guide that is allowed to float radially in order to allow the ball-poppet to be substantially self-centering with respect to the valve seat. In addition, cross-over leakage is preferably negated by closing an exhaust ball-poppet just prior to opening a supply ball-poppet. These principles and features are equally applicable to either or both of the primary or the multi-pressure selector fluid control valves.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: August 13, 2002
    Assignee: Ross Operating Valve Company
    Inventor: Charles A. Weiler, Jr.
  • Publication number: 20020092999
    Abstract: A plurality of embodiments of a flexible, discrete valve seat according to the present invention are provided for use in a high-purity valve. In one embodiment, the valve seat is retained in contact with a sealing surface on the valve body. In other embodiments, the valve seat can be retained by the actuating valve member, such as by a threaded connection, or via a welded connection. A high purity valve is provided having a flexible discrete valve seat that seals over an area of contact and is useful for many dynamic valve cycles. The valve seat according to the present invention can be metallic and of an intermediate hardness relative to the other sealing components, namely the valve member or diaphragm and the valve body.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 18, 2002
    Inventors: Maria T. Longo, Jennifer K. Peteritis, Victor N. Rasanow