Packing Expands With Closing Patents (Class 251/191)
  • Patent number: 9482348
    Abstract: A cycle valve can include a valve body and a dynamic sealing spool assembly contained within the interior of the valve body. The dynamic sealing spool assembly includes a sleeve and a gate cartridge assembly which slides within the sleeve between an open and a closed position. The sleeve can include a sleeve opening while the gate cartridge assembly can include two openings, each of which includes a dynamic seat assembly. The dynamic seat assembly in one opening can be formed by upper and lower dynamic seats configured as solid blocks which seal the pathway through the valve when the gate cartridge assembly is in the closed position. The dynamic seat assembly in the other opening can be formed by upper and lower dynamic seats configured as cylinders which form the pathway through the valve when the gate cartridge assembly is in the open position.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: November 1, 2016
    Assignee: DeltaValve, LLC
    Inventor: Ruben F. Lah
  • Patent number: 9222600
    Abstract: A valve assembly comprises a valve body comprising a plug chamber. A static seal is disposed adjacent an inner sidewall of the plug chamber, and a plug comprising a plug head is moveably positioned within the plug chamber, the plug head being configured to contact the static seal only when the plug is adjacent to a seat ring. Methods of using a valve and methods of forming a valve assembly are also disclosed.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: December 29, 2015
    Assignee: Flowserve Management Company
    Inventors: Laren J. Winkel, Fred Cain
  • Patent number: 6565065
    Abstract: An adaptor is for a rising disc valve which has a handle for rotating a stem in a housing bore having a shoulder and which displaces a disc valve member which seals against a frusto-conical housing seat spaced from the shoulder. A stack of Belleville -steel springs is between the disc member and the ring seal. An interface ring is between the springs and the ring seal. As the disc member is seated in its valve seat, a ring at the attachment member abuts the shoulder. The attachment member can no longer axially displace and compressively loads the springs as the disc member is further axially displaced to the valve closed state. The compressive load on the ring seal expands the seal radially outwardly against the housing bore and radially inwardly against the piston shank.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: May 20, 2003
    Assignee: Straham Valves, Inc.
    Inventor: Robert Palmer
  • Patent number: 5718410
    Abstract: A small flow control valve with cartridge type seating arrangement is shown and described. A conventional valve housing with inlet and outlet ports and a seat ring cartridge. A plug with a lower throttling profile engages within the seat ring bore. A deformable seal is provided and is capable of being deformed by a metal collar radially inwardly to compress the exterior of the upper contoured plug portion to prevent leakage in the closed valve position. The collar is held in constant compression by a circular spring placed between the collar and a groove located within a bore of the cartridge. The valve further has an actuating device adjustably attached thereto.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: February 17, 1998
    Inventor: Hans D. Baumann
  • Patent number: 5311902
    Abstract: A reciprocating positive displacement compressor is described having an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the closed condition of the valve, is described.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: May 17, 1994
    Inventor: Norbert W. Overfield
  • Patent number: 5118079
    Abstract: A removable fluid seal has a first deforming pin seated on a dead end of a fluid passage and a second deforming pin positioned in the opposite end of the fluid passage, with a spherical elastomeric member positioned between the first and the second deforiming pins. A threaded plug is axially advanced through the fluid passage to force the deforming pins towards each other and resiliently distort the elastomeric member into a deformed state in which an outer surface of the sphere is forced into sealing engagement with the sidewall of the fluid chamber.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: June 2, 1992
    Assignee: Sauer, Inc.
    Inventor: Thomas A. Watts
  • Patent number: 4830334
    Abstract: In a flow regulator which is operated by axially compressing the two ends of a resilient cylindrical plug causing the plug to swell and expand outwardly to interrupt flow of natural gas and the like, a stress ring is disclosed. In the preferred embodiment, the stress ring is formed of between eight and 36, preferably being about 24, individual wedge shaped segments having equal angles of inclusion and each segment has a surrounding angled tab segment, the tabs collectively encircling the resilient plug. The tabs form a ring which confines the plug so that radial expansion outwardly and contraction inwardly is accomplished while reducing stress concentration. Moreover, the several segments are all joined to the resilient plug by suitable fastening means such as pins inserted through the segments and into the resilient plug.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: May 16, 1989
    Inventor: Robert H. Welker
  • Patent number: 4712769
    Abstract: The disclosure is directed to a seal forming means in a valve plug for use in a fluid control valve, particularly in high temperature and high pressure fluid applications. The valve plug of the invention generally comprises a main valve plug member and a seal forming member associated therewith. The seal forming member is axially aligned with the main valve plug member and includes an outer wall having a surface that is coincident with an imaginary surface extension of the outer surface of the main valve plug. The seal forming member comprises a durable material having predetermined resilient characteristics, whereby said seal forming member is resiliently compressible within a predetermined range of compression. Moreover, the seal forming member includes an interior space and a finite section of minimum wall thickness formed in the outer wall. A packing material is tightly received and compressed within said interior space and, means are provided for compressing the seal forming member upon valve shut off.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: December 15, 1987
    Assignee: White Consolidated Industries, Inc.
    Inventor: Roger E. Johnson
  • Patent number: 4541608
    Abstract: A high pressure shut-off valve has a hollow valve body with an open end, closed end and a cylindrical cavity with a cover. Aligned inlet and outlet portions form a straight bore intersecting the valve cavity. A plug valve assembly has a supporting mandrel reciprocally slidable to a position abutting the valve cavity closed end, with an end portion having a transverse valve passage and an intermediate portion for closing the valve body bore, the valve passage being aligned with the bore when retracted. An elastomeric sealing sleeve member on the mandrel seals the cavity wall around the bore when the valve is closed. A mon-rising threaded stem, operated by a hand wheel, moves the valve assembly and has a lost motion connection operable on overtravel to compress the sleeve member longitudinally along the mandrel. Metal discs supported integrally on a supporting sleeve fill holes in the sleeve member to prevent extrusion of the sleeve into the bore.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: September 17, 1985
    Assignee: Custom Oilfield Products, Inc.
    Inventors: Buford G. Forester, Billy L. Redmon
  • Patent number: 4531545
    Abstract: A multiposition choke valve assembly comprises:(a) a valve body defining an interior chamber and inlet and outlet flow ports communicable with that chamber,(b) a valve stopper sub-assembly movable axially longitudinally in the chamber, the sub-assembly including an axially extending stem, an axially extending sleeve, an annular section located between the stem and sleeve, and an annular seal on the annular section and exposed at the section periphery,(c) the sleeve forming multiple through openings and having a retracted position in which the flow passes with relatively lesser velocity past the seal and then forwardly to pass via such openings with relatively increased velocity into the sleeve, followed by generally axially forward flow toward the outlet flow port,(d) the sleeve having an advanced position in which the seal is radially compressed to engage a body bore, and the flow through the sleeve openings is blocked.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: July 30, 1985
    Assignee: Hydril Company
    Inventor: John D. Muchow
  • Patent number: 4471810
    Abstract: A new and improved valve apparatus having an operating mechanism sealed in such a manner that the fluid pressure urging thereon produces offsetting or balancing forces to enhance ease of valve operation. To accomplish the force balancing, the flow closure means is continuously sealed to the valve housing and seat to produce the desired pressure responsive surfaces. By balancing the pressure forces, movement of the valve closure element between the open and closed positions with a minimum of operating force is accomplished. In addition the operating mechanism tubular flow closure element and valve seat having a plurality of opposed radially disposed flow opening are arranged so that the controlled flow through the openings into the seat impinges on itself to prevent flow cutting or erosion of the valve seat. When the flow closure element moves to the closed position, it activates a protected second seal on the seat to block flow throuh the flow openings.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: September 18, 1984
    Assignee: Valve Concepts International
    Inventors: John D. Muchow, Harry R. Cove
  • Patent number: 4433827
    Abstract: A high pressure shut-off valve consists of a hollow valve body having an open end, a closed end and a cylindrical cavity with a cover therefor. Aligned tubular inlet and outlet portions on opposite sides of the valve body form a continuous straight bore intersecting the cavity at a right angle thereto. A plug valve assembly positioned in the valve body cavity has a supporting mandrel a slidable therein between an extended position abutting the closed end and a retracted position some distance therefrom. The mandrel has an end portion with a laterally extending valve passage and an intermediate portion closing the valve body bore when in the extended position, the valve passage being aligned with the bore when in the retracted position. A sealing sleeve member of elastomeric material surrounds the mandrel intermediate portion and engages the entire circumferential wall of the cavity around the bore to seal against leakage when the valve is closed.
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: February 28, 1984
    Assignee: Custom Oilfield Products, Inc.
    Inventors: Billy L. Redmon, Buford G. Forester
  • Patent number: 4382452
    Abstract: A throttle valve assembly for controlling flow of air through a passage. A housing is provided having a straight flow passage extending therethrough. The housing also has a bore formed therein in intersecting relationship to the passage. A valve is movably positioned within the bore for adjustably restricting the flow of air through the passage. The valve includes an elastomeric sleeve coaxially aligned with and positioned within the bore and being axially movable therealong into a position wherein the sleeve means extends across the passage. Relatively movable abutments coact with the sleeve when the latter is in said position for resiliently deforming the sleeve into at least partial sealing engagement with the housing for restricting or preventing flow of air through the passage.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: May 10, 1983
    Assignee: Humphrey Products Company
    Inventor: Stanley M. Loveless
  • Patent number: 4315616
    Abstract: This disclosure is directed to a dump valve. In the preferred and illustrated embodiment, the dump valve incorporates a valve operator and comprises a valve body having a side located port for admission of high pressure fluid and an axial outlet. The valve operator powers an elongate push rod which passes through an axial passage in the body and supports a hard metal valve element at the tip which is profiled to fit against a valve seat, blocking flow in the axially located passage. Additionally, it incorporates a second seat which is formed of a shaped inner valve of resilient material. This comprises a second valve element. The two valve elements collectively seal the passage. This is particularly helpful in that a hard trimmed, primary shutoff mechanism is first provided incorporating the hard trimmed valve element and seat, and a second soft trimmed valve element and seat cooperates with it. The hard trim valve must seat first before the rubber plug is expanded.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: February 16, 1982
    Inventor: Robert H. Welker
  • Patent number: 4314688
    Abstract: An improved gate valve for high fluid pressure applications has a housing with aligned inlet and outlet passages and a well intercepting those passages. A piston-type gate is slidably positioned in the well and movable by conventional means between an open position wherein it does not intercept the inlet and outlet passages and a closed position wherein it blocks those passages and seats against the bottom of the well. The gate is fitted with a special seal which includes a circular section seated in a circumferential groove in the gate located above the inlet and outlet passages and a pair of lengthwise sections extending from diametrically opposite locations on the circular section toward the end of the gate at opposite sides thereof, those sections being located transversely with respect to the valve inlet and outlet passages.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: February 9, 1982
    Assignee: Southwest Oilfield Products, Inc.
    Inventor: A. Louis Leman, Jr.
  • Patent number: 4274433
    Abstract: In a valve structure, a valve plug apparatus to provide a leak-tight valve shut-off, is disclosed. The valve structure includes a valve body provided with an inlet passage, an outlet passage and an internal web portion intermediate the inlet and outlet passages. A closeable passage-forming means is arranged in the web portion and a two-member valve plug is mounted on a valve stem for controlled axial movement within the web portion and operable to close said closeable fluid passage-forming means to shut the valve. In accordance with the invention, the two-member valve plug comprises a lower plug member and an upper plug member which are in a generally axially spaced relation on the valve stem. Packing means is held in a snug-fitting condition between the lower and upper plug members by an axially resilient member which acts between one end of the valve stem and the valve plug to urge the lower and upper plug members together.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: June 23, 1981
    Assignee: White Consolidated Industries, Inc.
    Inventor: Ira H. Schnall
  • Patent number: 4206902
    Abstract: A valve for a flow regulator employed in a fluid system is disclosed. The flow regulator includes a housing defining an internal chamber and a fluid inlet and outlet communicating with the chamber each adapted to be connected to the fluid system. Mounted within the chamber is a reciprocating piston that is actuated by an external master piston. A backing element is also mounted within the housing. The valve includes an elastomeric inner member including a body with a circumferential layer of elastomeric material bonded to the body. The inner member is mounted between the piston and stationary backing member and upon being compressed by the piston, varies the flow area through the inner chamber. To protect the interface of the outer layer and the body from fluid flow, a shield may be placed along the backing member and the upstream end of the inner member.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: June 10, 1980
    Assignee: Vapor Corporation
    Inventors: Horst Barthel, Robert R. Bell
  • Patent number: 4136852
    Abstract: A valve comprising a resiliently expansible and compressible plug movable in a valve chamber to open and close a flow passage intersected by the chamber. The plug has a sealing portion which is expanded outwardly against the walls of the chamber, e.g., by being compressed in a different direction to maintain a fluid type seal when the plug is moved in a chamber between open and closed positions of the valve.
    Type: Grant
    Filed: October 6, 1976
    Date of Patent: January 30, 1979
    Assignee: General Industries, Inc.
    Inventor: Wilfred J. Grenier
  • Patent number: 4132386
    Abstract: The invention is an improved valve mechanism for controlling the flow in conduit to be used in combination with an adjustable valve. The adjustable valve includes a T-shaped valve body having a first bore extending therethrough and a second bore adjacent to the first bore. The adjustable valve also includes a stem having an inner end and an axially outer end which extends through one of the ends of the first bore and a device for forming a seal between the first bore and the stem. The valve mechanism includes a cylindrically shaped sealing member having a bore axially aligned with the first bore of the valve body and being disposed within the first bore adjacent to the end thereof oppositely disposed from the stem. The sealing member has a cylindrical inner sidewall and a truncated-conical outer sidewall adjacent to its top portion and a cylindrical outer sidewall adjacent to its bottom portion.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: January 2, 1979
    Inventor: Eugene O. Lee
  • Patent number: 4111221
    Abstract: A normally open valve construction utilizes a valve housing defining a fluid passageway extending through the housing between at least two ports, and an expandible, metallic bladder within the housing. The bladder is mounted in non-obstructing relationship with the fluid passageway when the valve is open and is expanded across the passageway in flow-obstructing relationship when the valve is closed. The bladder in the expanded condition has a generally tubular configuration and is closed at one end. In the non-expanded condition, one portion of the tubular configuration is folded coaxially within an adjacent portion to shorten its axial length and to remove all portions of the bladder from the fluid passageway. A pyrotechnic squib or other fluid pressure generator discharges within the tubular configuration to extend the bladder into the fluid passageway and close the valve.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: September 5, 1978
    Inventor: Charles R. Olsen
  • Patent number: 4089504
    Abstract: A valve having improved sealing means making use of a sealing member of resilient material which is compressed radially when the valve is closed. Compression causes the peripheral surface of the sealing member to be pressed into sealing engagement with a cylindrical seating surface carried by the valve body. Rigid compression members are disposed on opposite sides of the sealing member, and one of these members limits compression of the sealing member when the valve is closed.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: May 16, 1978
    Inventor: Robert L. Giuliani
  • Patent number: 4073308
    Abstract: A valve comprising a valve body having a bore and a plunger axially movable in the bore between an open and a closed position. The bore has a fixed valve seat therein and is in communication with an inlet port and outlet port on opposite sides of the bore seat. The plunger has a seat cooperable with the bore seat to make a leak-tight, face-to-face seal when the plunger is in its closed position. The plunger also carries a pressure-actuated "seatless" seal which seals against the walls of the bore and the plunger when the plunger is in its closed position and is subjected to system pressure.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: February 14, 1978
    Inventor: Morris R. Stith, Jr.
  • Patent number: 4037994
    Abstract: A valve device is disclosed for unloading pressure from a compressor of the type utilized in a medical respirator. The device is formed with a cylindrical chamber containing a compressible elastomeric member. Inlet and relief ports of the valve open into the chamber, and the inlet port is connected with the outlet of the gas compressor. Bistable actuator means is provided for moving a plunger within the chamber which in turn causes the cylindrical member to assume either a compressed or uncompressed state. In its uncompressed state a radial clearance between the outer wall of the elastomeric member and the chamber provides a flow path between the inlet and relief ports to bleed pressure from the compressor. In its compressed state the elastomeric member expands to occlude the flowpath and prevent pressure bleed-off from the compressor.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: July 26, 1977
    Inventor: Forrest M. Bird
  • Patent number: 4015815
    Abstract: The valve for use in thermal shock deburring apparatus, in which oxygen and hydrogen are combined under explosive conditions, and which provides reliable shut-off of the respective gas component being supplied to an explosion jet chamber, and which prevents backfire or backflash, is enclosed in a housing formed with a bore, preferably cylindrical, in which an insert sleeve is located; a resiliently deformable sealing material such as, for example, Teflon, is located between a portion of the bore and the sleeve.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: April 5, 1977
    Assignee: Robert Bosch G.m.b.H.
    Inventors: Ernst Leisner, Wolfgang Ulbricht, Helmut Kaufmann
  • Patent number: 3995586
    Abstract: Disclosed is a valve that has a torpedo shaped valving member in the middle of an enlarged passageway. The valving member contains an elastomeric sleeve that expands outwardly from a hinged area when compressed to form a line seal with the passageway. The valve is in the form of a multiple valve-feeding, bypass and venting valving units all in one dielectric casting. Means are also shown for connecting cans to the valve and for electrically charging powder. A method for valving and the diaphragm's details are also disclosed.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: December 7, 1976
    Assignee: W. R. Grace & Co.
    Inventors: James R. Crose, Charles A. Hartnett
  • Patent number: 3990677
    Abstract: A valve comprising a resiliently expansible and compressible plug movable in a valve chamber to open and close a flow passage intersected by the chamber. The plug has a sealing portion which is expanded outwardly against the walls of the chamber, e.g., by being compressed in a different direction to maintain a fluid type seal when the plug is moved in a chamber between open and closed positions of the valve.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: November 9, 1976
    Assignee: General Industries, Inc.
    Inventor: Wilfred J. Grenier
  • Patent number: 3961768
    Abstract: A plunger valve having a straight through passage closed by a cylindrical, elastic plunger. The plunger is movable at right angles to the through passage. It is connected to a screw-threaded stem by a retaining pin which is positioned in a longitudinal open bore of the plunger. In closed position of the valve, the retaining pin contacts the opposite wall of the through passage to limit the elastic deformation of the plunger. In open position of the valve, the retaining pin is slightly retracted within its bore. The retaining pin is rigidly fixed to the stem and is rotatable in the plunger, but the plunger is held non-rotatably in the valve body by circumferential friction. The retaining pin holds the plunger by a shoulder situated in the upper part of the plunger.
    Type: Grant
    Filed: March 27, 1974
    Date of Patent: June 8, 1976
    Assignee: Conval Nederland N.V.
    Inventor: Hubertus Leonardus Martinus Veugelers
  • Patent number: 3954123
    Abstract: A plug for an aircraft lavatory drain port having a radially expandable portion and a resilient sealing member covering the expandable portion. A locking portion is connected for securing the plug in sealing position.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: May 4, 1976
    Inventor: Milton D. Duckworth, Jr.