Adjustable Patents (Class 251/307)
  • Patent number: 10100935
    Abstract: An air valve includes a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet and an outlet; a sealing device mounted within the valve body, the sealing device including a first contacting portion and a second contacting portion; and a float moveable within the valve body, the float having a first sealing position and a second sealing position.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: October 16, 2018
    Assignee: Mueller International, LLC
    Inventor: Jeff Milroy
  • Patent number: 9816620
    Abstract: A butterfly valve seal arrangement in a butterfly valve having a cylindrical flow channel with a wall includes a seal flange, an elastomeric seal, a seal channel, and an annular seal retaining ring. The seal flange extends into the cylindrical flow channel from the wall of the cylindrical flow channel. The seal channel is recessed into the wall of the cylindrical flow channel adjacent to the seal flange. And the annular seal retaining ring includes tabs extending into the seal channel which hold the annular seal retaining ring in the cylindrical flow channel. An elastomeric seal is held in compression in the seal channel and against the seal flange by the annular seal retaining ring, and extends into the cylindrical flow channel forming a seal surface held in compression against a vane seat of a vane in a position perpendicular to a direction of flow.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: November 14, 2017
    Assignee: Kennedy Valve Company
    Inventor: Paul Kennedy
  • Patent number: 8944407
    Abstract: A rotation axis O2 of a shaft 3 is attached thereto with double-offset in the X and Y directions with respect to a center line O1 of a valve seat 2. A bevel process is implemented on the outer peripheral surface of a valve 1 such that the valve 1 and the valve seat 2 is line-sealed, and the sign of the angles of inclination is switched between plus and minus at two places of the outer peripheral surface of the valve 1 deviated from the center of the axis. Further, a section where the angle of inclination is constant is prepared in each of the sections connecting the two places, while the other sections are smoothly connected to each other.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: February 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihiro Kurihara, Takuro Zui, Satoru Hasegawa
  • Patent number: 8857793
    Abstract: Disclosed is a butterfly valve capable of controlling a flow of a fluid according to a rotation of a disk. The butterfly valve includes a body provided with an inner space having two open ends; a disk unit having a disk rotatably installed at the inner space, and configured to selectively open and close the inner space according to a rotation of the disk; a first seat portion protruding from an outer circumferential surface of the disk; a second seat portion protruding from an inner circumferential surface of the body, and arranged to face the first seat portion; and a sealing unit mounted to the body, and formed to contact the first and second seat portions such that a gap between the outer circumferential surface of the disk and the inner circumferential surface of the body is sealed. Under this configuration, the butterfly valve may have an enhanced reliability under low and high temperatures and a high pressure.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: October 14, 2014
    Assignee: Seokwang Mfg. Co., Ltd.
    Inventor: Man Young Kim
  • Publication number: 20140299803
    Abstract: A lightweight butterfly valve having a disk maintained in a fixed position on a compound shaft through an interlocking relation ship between each of the individual shafts of the compound shaft and the disk as the disk is moveable between an open or closed position with the butterfly valve may having other features such as an electric drive to quickly rotate the compound shaft to provide for rapid opening and closing the butterfly valve, a disk position indicator and a shaft stop to prevent the disk from being driven past a full open condition.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 9, 2014
    Inventor: Robert Hansen
  • Patent number: 8727309
    Abstract: Fluid valves having adjustable sealing characteristics are described. An example fluid valve includes a valve body having a flow aperture to enable the flow of fluid therethrough. Additionally, the fluid valve includes a seal surrounding the flow aperture and a sealing member having a shaft extending therefrom. The sealing member is movable relative to the seal and the flow aperture to control the flow of fluid through the flow aperture. Further, the fluid valve includes a support body movably coupled to the valve body and having a passage to receive the shaft. The support body holds the shaft and the sealing member to enable rotation of the shaft and the sealing member relative to the valve body and the seal, and at least one of the support body or the valve body includes at least one elongated opening to enable movement of the support body relative to the valve body to change an amount of engagement between the sealing member and the seal when the fluid valve is in a closed position.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: May 20, 2014
    Assignee: Fisher Controls International LLC
    Inventor: Ross Arthur Schade
  • Patent number: 8607815
    Abstract: A butterfly valve with an undulating sealing surface, which has an inflatable annular seal mounted in a housing. A disk is pivotally mounted in the housing and has an edge with an undulating sealing surface and a peripheral sealing edge. The undulating sealing surface of the disk and a sealing face of the annular seal have non-mating profiles when the valve is in an unsealed condition. Pressure in a chamber proximate the annular seal causes the face of the annular seal to expand and deform and the face forms a high-pressure seal between the sealing ridge and the annular seal. Also includes a method for stopping delivery, of a conduit transportable material through a butterfly valve.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: December 17, 2013
    Assignee: Dynamic Air Inc.
    Inventors: Robert A. Hansen, Daniel Sabelko
  • Patent number: 8607812
    Abstract: A butterfly valve for handling materials where the temperature of the materials flowing through the butterfly valve can exceed the breakdown temperature of the sealing member with the butterfly valve inhibiting contact of hot transportable materials with the sealing member to isolate the hot transportable materials from the sealing member. Cooling conduits maintain at least portions of the valve that contacts the sealing member at a temperature below the breakdown temperature of the sealing member to prevent seal failure.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: December 17, 2013
    Assignee: Dynamil Air Inc.
    Inventor: James R. Steele
  • Publication number: 20120227833
    Abstract: A butterfly valve for forming an enhanced seal between the disk and the annular seal through use of unmated surfaces on the sealing face of the disk and the sealing face of the annular seal.
    Type: Application
    Filed: May 15, 2012
    Publication date: September 13, 2012
    Inventors: Robert A. Hansen, Daniel Sabelko
  • Patent number: 8256450
    Abstract: A butterfly valve with an undulating sealing surface, which has an inflatable annular seal mounted in a housing. A disk is pivotally mounted in the housing and has an edge with an undulating sealing surface and a peripheral sealing edge. The undulating sealing surface of the disk and a sealing face of the annular seal have non-mating profiles when the valve is in an unsealed condition. Pressure in a chamber proximate the annular seal causes the face of the annular seal to expand and deform and the face forms a high-pressure seal between the sealing ridge and the annular seal. Also includes a method for stopping delivery of a conduit transportable material through a butterfly valve.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: September 4, 2012
    Assignee: Dynamil Air Inc.
    Inventors: Robert A. Hansen, Daniel Sabelko
  • Patent number: 8256448
    Abstract: A butterfly valve for handling materials where the temperature of the materials flowing through the butterfly valve can exceed the breakdown temperature of the sealing member with the butterfly valve inhibiting contact of hot transportable materials with the sealing member to isolate the hot transportable materials from the sealing member. Cooling conduits maintain at least portions of the valve that contacts the sealing member at a temperature below the breakdown temperature of the sealing member to prevent seal failure.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: September 4, 2012
    Assignee: Dynamic Air Inc.
    Inventor: James R. Steele
  • Patent number: 7493888
    Abstract: An air intake control apparatus includes a body forming an intake passage for an internal combustion engine, a bore member retained within the body to be movable relative to the body and having a bore being in communication with the body and having an internal peripheral surface forming a portion of the intake passage, at least one shaft body penetrating through the bore member and rotatably provided at the body, at least one valve body fixed to the shaft body so as to adjust an opening degree of the intake passage in the bore member, and a reference portion defining a relative position of the bore member to the shaft body in an axial direction of the shaft body.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: February 24, 2009
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Atsutoshi Ikegawa
  • Publication number: 20080272324
    Abstract: A reduced component wear valve is comprised of a valve body having a passage therethrough and a disc attached to a rotatable shaft. The disc is utilized with a seal forming a gap between the disc and the seal proximate to the rotational axis of the disc. When the disc is in the open position, the seal major axis is greater then the disc diameter and they do not touch. As the disc rotates to near closure, the disc perimeter engages the minor axis of the seal (which is smaller than the disc diameter), and the disc stretches the seal in the minor axis direction thus decreasing the major axis such that the gap is closed. The seal can be pre-formed in an elliptical shape or it can be formed into an elliptical shape by a retaining mechanism. The seal may be a single-piece or a multi-piece assembly press-fit into the valve body. Zero or light disc to seal contact during the majority of the valve disc rotation minimizes valve seal wear and rotational friction.
    Type: Application
    Filed: July 17, 2008
    Publication date: November 6, 2008
    Applicant: FISHER CONTROLS INTERNATIONAL LLC.
    Inventors: Philip W. Eggleston, James Leroy Lounsberry, Wilbur Dean Hutchens
  • Patent number: 7159844
    Abstract: A valve having a housing with a valve seat for a two-piece flap which is rotatably mounted on a drive shaft. An annular piston seal and an adjacent cover disk are disposed between the first part and the second part of the two-piece flap so as to revolve there-around. The diameter of the cover disk is smaller than the diameter of the annular piston seal which is embodied as a metal ring that is provided with a gap. The invention also relates to the use of said valve as a gas recirculation valve.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: January 9, 2007
    Assignee: Siemens AG
    Inventors: Gerd Bornmann, Peter Kohlen, Michael Rennen
  • Patent number: 7080820
    Abstract: A reduced component wear valve is comprised of a valve body having a passage therethrough and a disc attached to a rotatable shaft. The disc is utilized with a seal forming a gap between the disc and the seal proximate to the rotational axis of the disc. When the disc is in the open position, the seal major axis is greater then the disc diameter and they do not touch. As the disc rotates to near closure, the disc perimeter engages the minor axis of the seal (which is smaller than the disc diameter), and the disc stretches the seal in the minor axis direction thus decreasing the major axis such that the gap is closed. The seal can be pre-formed in an elliptical shape or it can be formed into an elliptical shape by a retaining mechanism. The seal may be a single-piece or a multi-piece assembly press-fit into the valve body. Zero or light disc to seal contact during the majority of the valve disc rotation minimizes valve seal wear and rotational friction.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: July 25, 2006
    Assignee: Fisher Controls International LLC.
    Inventors: Philip W. Eggleston, James LeRoy Lounsberry, Wilbur Dean Hutchens
  • Patent number: 6886806
    Abstract: In a throttle valve actuator unit having a throttle valve neck that contains a pivotable throttle valve and having a drive chamber for receiving an electric drive mechanism for the throttle valve and for receiving an electric connection plug for a plug connection to a control unit, in order to reduce the production costs while maintaining the many customer-specific characteristics, the drive chamber is enclosed by a housing module, and the throttle valve neck is attached as a separate part to the housing module and secured thereto.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: May 3, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Klaus Borasch, Hans-Joerg Fees, Klaus Kaiser, Uwe Hammer, Stephan Wuensch
  • Patent number: 6840502
    Abstract: A flap valve for fuel aggregates, such as fuel cells, comprises a flap arranged within a flow channel. A shaft for pivoting the flap is connected to the flap. Further, a seal disposed in a recess of the channel wall is provided, which comprises at least one pressure pocket connected with the flow channel.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: January 11, 2005
    Assignee: Pierburg GmbH
    Inventors: Peter Haushaelter, Michael Benra, Rolf Lappan, Martin Nowak
  • Patent number: 6761348
    Abstract: The invention relates to a throttle device for controlling a fluid flow in an internal combustion engine, with a multi-part housing, whose first housing part and whose additional housing half rest against each other at contact surfaces and the fluid flow is controlled by means of a flat valve element, which can be adjusted in the flow conduit of the fluid flow by an actuating drive. The throttle device contains at least one sealing and compensation element, whose shaping of its inner wall defines the flow cross section of the fluid flow in the throttle device and which has a contact surface, which can seal cavities on its side oriented toward the housing.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: July 13, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Markus Michels, Stefan Josten
  • Publication number: 20030234378
    Abstract: The present invention is directed to an exhaust gas control (EGC) valve. The EGC valve comprises a valve housing having at least one inlet port, at least one outlet port, and a flow channel having a centerline extending between the ports. A valve seat is adjacent an opening in the at least one outlet port. The EGC valve further comprises a rotatable actuator shaft offset from the centerline. At least one L-shaped valve armature is operably connected to the actuator shaft. The valve armature has a first leg and a second leg. The first leg is connected to the actuator shaft so that rotation of the actuator shaft in a first direction positions the second leg into sealing engagement with the valve seat to close the flow channel.
    Type: Application
    Filed: April 15, 2003
    Publication date: December 25, 2003
    Inventor: John P. Hartley
  • Patent number: 6589380
    Abstract: An engine air control valve assembly includes a valve shaft and a valve plate made from composite polymeric plastics that are formed to be welded together by infrared laser welding. In a preferred embodiment, the valve shaft includes an intermediate portion with a longitudinal open groove along one side. The valve plate is formed with a central raised portion that engages the valve shaft in assembly. A tongue extends inward from the raised portion of the plate and is fitted into the shaft groove after assembly of the shaft into a valve body. The tongue is softened by a laser beam applied to the tongue/groove interface, thereby welding the valve components together in the installed location.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: July 8, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Douglas Ronald Gnage, Gary John DeAngelis, David M. Peers
  • Patent number: 6367771
    Abstract: The device concerns a device for adjusting the relative distance or position between a check valve and the base on which it rests when it is closed. Said device consists of a valve body (1), a valve shaft (5), a check valve (5) and two bearings (2 and 3) and a base (6). The inner bores of the bearings are offset relative to their external diameter. The adjustment is carried out by appropriately positioning the bearings inside the valve body. The device is particularly designed for rotating butterfly or ball taps and valves.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: April 9, 2002
    Inventor: Lucien Mazot
  • Publication number: 20010019118
    Abstract: The invention relates to a portable handheld work apparatus having a movable control element (1) for influencing the operation of the work apparatus. The work apparatus includes an actuable positioning element (2) and a Bowden cable (3) connecting the positioning element (2) and the control element (1). The Bowden cable (3) includes a Bowden cable casing (4) and a wire (5) guided in the casing (4) so as to be axially movable. The Bowden cable casing (4) is held at its two ends (6, 7) in support locations (8, 9) with respective longitudinal stops (10, 11). The support locations (8, 9) are fixed with respect to the apparatus. An adjusting device (12) is provided between the ends (6, 7) of the Bowden cable sleeve (4) and the corresponding support locations (8, 9). The adjusting device (12) has a holding element (14) which holds the end (6, 7) and is fixed to the support location. The holding element (14) can be loosened to axially displace the ends (6, 7).
    Type: Application
    Filed: March 6, 2001
    Publication date: September 6, 2001
    Inventors: Joachim Kottke, Martin Wohrle, Friedel Kordowich, Reinhard Friedrich
  • Patent number: 6189506
    Abstract: A throttle valve for throttling the combustion air flow for an internal combustion engine is disclosed, having a body with a throat, a butterfly in the throat to throttle flow, and a shaft connected to the butterfly to operate it. The shaft has an arm that abuts a throttle stop to maintain the butterfly in an almost-closed (or idle) position. The arm has an opening that permits access to the head of the throttle stop to adjust the throttle stop when the throttle valve is in the almost-closed position. The opening is located so that a tool such as a hex wrench can pass through the opening and engage a socket in the head of the throttle stop, pemitting it to be rotated and adjusted. The throttle shaft and arm are preferably integrally molded of plastic, and the throttle stop head is preferably larger than the threaded shaft of the throttle stop.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: February 20, 2001
    Assignee: Siemens Canada Limited
    Inventor: James Vanderveen
  • Patent number: 6123319
    Abstract: A damper valve includes a base, a valve blade pivotally mounted on the base and two serially arranged valve seats. Each valve seat comprises adjustable valve seat portions on opposite sides of a pivot axis of the valve blade, the valve seat portions being positioned on opposite sides of the blade. Each valve seat portion includes a stationary member fixed to the base, an adjustable element movable relative to the stationary member, and bolts fixing the adjustable element to the stationary member. Adjustment devices are provided for moving each adjustable element toward the valve element to provide a precise fit along the entire length of the valve seat. The valve seats and the valve blade define an annulus which can contain gas at a higher pressure than the fluid controlled by the valve, so that none of the controlled fluid flows past the valve.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: September 26, 2000
    Assignee: Precision Engineered Products Inc.
    Inventor: Ronald K. Maxwell
  • Patent number: 6010114
    Abstract: A damper system has a rotatable, damper blade pivotally mounted within a damper body. The inner wall of the damper body has a plurality of inwardly, radially extending pins over which is fitted a generally U-shaped sealing channel. The sealing channel comprises two members each of which is held in compression against the inner wall of the damper body by adjustable hold-down blocks.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: January 4, 2000
    Assignee: Fab-Tech Inc.
    Inventors: John B. Moore, Wayne E. Goldman
  • Patent number: 5743512
    Abstract: A butterfly valve assembly is disclosed wherein a wedged shaped pin is used to position and fasten the butterfly disc to the valve shaft. The valve shaft, butterfly disc and wedged shaped pin are designed to cooperate in a manner that prevents relative movement between the valve shaft and butterfly disc without the necessity of pre-assembling and drilling the valve shaft and butterfly disc. This allows manufacture and repair without having to maintain the valve shaft and butterfly disc as a matched set. In the preferred embodiment, the butterfly disc has two intersecting apertures, one for insertion of the valve shaft, the other for insertion of a wedged shaped locking pin. The valve shaft is notched such that when it is inserted in the corresponding disc a locking pin with a wedged shaped flat may be inserted through a corresponding disc aperture causing an interference fit between the shaft pin and disc thus locking the disc in position relative to the shaft.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: April 28, 1998
    Assignee: United Technologies Corporation
    Inventor: Michael D. Greenberg
  • Patent number: 5620167
    Abstract: A modular butterfly valve for interupting the flow of particulate articles such as tablets, capsules, pills, and the like that includes a disk member which is selectively operable between an open position and a closed position. The disk member is pivotly carried by a pair of tranverse apertures of an elastomer valve seat. The elastomer valve seat also includes an outside diameter, and a seat portion. The seat portion includes a pair of sealing lips that are cantilevered at a selected angle from one end of the elastomer valve seat. The sealing lips form a first throat portion and a second throat portion. In the closed position, a first of the sealing lips abuts one side of the disk member while a second of the sealing lips abuts a peripheral edge of the disk member. The valve seat is retained between a housing and a removable clamping ring. The housing is configured for a quick connect coupling arrangement with a delivery end of a supply bin.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: April 15, 1997
    Inventor: Helmut Habicht
  • Patent number: 5538029
    Abstract: A method for adjusting sealing engagement of a valve seat includes providing a valve with a disk in a flow passageway and a valve seal with a seat positioned for sealing engagement with the disk, the valve body and seal together defining a channel having a seal surface lubricated to resist adhesion of the surface and polymeric material, the valve body defining a passage for external access to the channel; injecting liquid polymeric material through the passage into the channel, the polymeric material in the channel pressuring the valve seat toward sealing engagement with the disk; allowing the polymeric material to harden; producing a tunnel through the hardened polymeric material from an external port to the lubricated surface of the seal; and injecting liquid polymeric material under pressure through the tunnel into the channel and causing the liquid polymeric material to flow along the lubricated surface of the seal to collect in selected regions to improve sealing engagement of the seat with the disk.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: July 23, 1996
    Assignee: Henry Pratt Company
    Inventor: Edward G. Holtgraver
  • Patent number: 5494257
    Abstract: A damper valve includes a base, a valve element pivotally mounted on the base and adjustable valve seat portions on opposite sides of a pivot axis, the valve seat portions being positioned on opposite sides of the blade. Each valve seat portion includes a stationary member fixed to the base, an adjustable element movable relative to the stationary member, and bolts fixing the adjustable element to the stationary member. In addition, adjustment devices are provided for moving the adjustable element toward the valve element to provide a precise fit along the entire length of the valve seat.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 27, 1996
    Assignee: Precision Engineered Products, Inc.
    Inventor: Ronald K. Maxwell
  • Patent number: 5370361
    Abstract: A butterfly valve comprising a valve body, a throttle plate located within a throat of the valve body, and opposed projecting pins connected to the throttle plate and extending into two opposed bores of the valve body. At least one pin has an annular bearing surface. A spring urges either a thrust bearing against a needle bearing which in turn bears against the annular bearing surface or a needle bearing against the thrust bearing to bear against the annular bearing surface. This urges the throttle plate against an opposed thrust bearing which bears against the opposed projecting pin connected to the throttle plate to center the throttle plate within the throat of the valve body. A set screw can be provided to accurately position the throttle plate within the throat of the valve body. Preferably the throttle plate has tapered end sections to diminish turbulence within the valve throat.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: December 6, 1994
    Assignee: The BOC Group, Inc.
    Inventors: Barry I. Mendell, Leonard L. Marchland, Robert M. McElveen
  • Patent number: 5357997
    Abstract: A disc valve with a disc that is pivotable between open and closed positions has a metallic seal ring placed against an axially-oriented face formed by the housing and located at the ends of an enlarged conduit portion between the face and one of the ends of the housing. A three-part retainer ring which includes a main body located opposite the seal ring and a flange which extends radially outward from the main body and snugly fits into a groove in the housing is defined by at least three retainer ring segments. At least one of the retainer ring segments includes parallel ends which are opposite correspondingly parallel ends formed by the adjoining retainer ring segments so that this one segment can be radially moved past the other segments.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: October 25, 1994
    Assignee: Adams GmbH & Co. Armaturen KG
    Inventor: Bernd Brueggestrath
  • Patent number: 5327928
    Abstract: An air seal valve comprises an annular valve body having a circular valve plate disposed internally thereof with a pair of axially spaced valves thereon defining a fresh air plenum, one of said valves comprising a truncated conical plate having a radially outer edge engageable with the valve body to effect a seal thereagainst.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: July 12, 1994
    Assignee: Salem Engelhard
    Inventor: Brian D. Thomason
  • Patent number: 4988076
    Abstract: A butterfly valve seat structure has a polymeric sealing head slidably supported on the radially inner portion of a flat metal washer so as to be capable of radial sliding movement on the washer, a radially outer portion of the washer being rigidly clamped between the valve housing and the seat retaining ring, and a radially intermediate portion of the washer is capable of axial movement relative to the axis of the valve passage to facilitate axial movement of the sealing head. Axial projections on the head serve to resist any tendency to blow-out of the sealing head. The combined abilities of the sealing head to move axially and radially help to provide a good sealing action against the valve disc.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: January 29, 1991
    Assignee: Charles Winn (Valves) Limited
    Inventor: Philip J. Burton
  • Patent number: 4846441
    Abstract: Improved techniques are provided for adjusting the axial position of a rotatable valve closure element carrying an elastomeric annular seal with respect to a metallic valve body. An adjustable nut is threaded to the valve body and includes a recess for receiving a lower stem of the valve closure member. One or more interference members are spaced radially between the nut and the lower stem, and permit axial movement of the lower stem and thus the annular seals with respect to the valve body, while enabling the valve closure member to freely rotate during normal use of the valve.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: July 11, 1989
    Assignee: Keystone International, Inc.
    Inventors: William B. Scobie, Douglas G. Calvin
  • Patent number: 4739796
    Abstract: Fluid flow diverter apparatus is described for reversing the direction of fluid flow through a process loop, such as a bundle of heat exchange tubes in an air conditioning system. The apparatus utilizes a housing enclosing a rotary valve in which the diverter disk seats in two positions against generally U-shape seating frames that can be repositioned to compensate for erosion or other distortion of the seating surfaces on the frames and disk. The seating frames comprise a plurality of seating bars, each of which is adjustably fastened to the interior of the valve casing by at least one threaded fastener that extends through a transverse slot in the bar and engages the casing. All seating surfaces preferably are coated with a resilient material, such as rubber.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: April 26, 1988
    Assignee: Water Services of America, Inc.
    Inventors: Paul J. Harding, K. Peter Koch
  • Patent number: 4632360
    Abstract: A pivotally adjustable valve disc has a ring seal set in its grooved periphery for contact with a wall of a valve accomodating bore. A flexible, radially expansible member is in the valve groove in a backing relation to the ring seal. Passages admit pressure fluid from the upstream side of the valve disc to the valve groove where the applied pressure is exerted through the radially expansible member toward a radial expansion of the ring seal. In its pressured contact with the seal, the radially expansible member blocks pressure fluid escape through gaps and interfacial joints therein.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: December 30, 1986
    Assignee: United Aircraft Products, Inc.
    Inventor: Dennis W. DeSalve
  • Patent number: 4582080
    Abstract: A bidirectional valve useful at all temperatures from cryogenic to extreme fire temperatures. The sealing means for the bidirectional valve comprises a metallic sealing element having a pair of spaced sealing lobes defined thereon which are coated with a Teflon compound. A third sealing lobe is defined on the metallic sealing element between the pair of sealing lobes and is constructed solely of metal. A pair of coated sealing lobes further function as wipers to prevent sand, dirt or similar foreign particles from becoming crushed between the valve disc and metallic sealing lobe during the final closing of the valve. When the valve is exposed to fire conditions, the Teflon coated sealing lobes melt out leaving the metallic lobe as the fire safe sealing lobe.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: April 15, 1986
    Assignee: Lear Siegler, Inc.
    Inventor: Richard W. Stock
  • Patent number: 4508315
    Abstract: A valve seal for a butterfly valve comprises a U-shaped annular seating member disposed in an annular slot in the valve body and a retaining ring for holding the seating member in place. The seating member cross-section comprises two legs and a bight portion connecting them. A first one of the legs is captured between the retaining ring and valve body to hold the seating member in the slot and enable limited rotational movement of the seating member. A radially inwardly projecting extension on the bight terminates in an annular sealing surface that cooperates with the valve disc. The seating member divides the slot into first and second axial sides in fluid pressure communication with the valve chamber. The seal also comprises an annular open-helical back-up member disposed in an annular cavity formed in the slot by the legs and bight portion of the seating member. The annular cavity is in fluid pressure communication with the second axial side of the slot.
    Type: Grant
    Filed: August 2, 1983
    Date of Patent: April 2, 1985
    Assignee: Edison International Inc.
    Inventors: Carl F. Livorsi, Joseph A. Wucik, Jr., Philip J. Dorrian, Lawrence F. Struzik
  • Patent number: 4420140
    Abstract: The butterfly valve comprises a valve body traversed by a passageway and a closure element or butterfly valve disk placed transversely with respect to the passageway. An annular bearing surface of the valve disk is intended to bear on a valve seat placed within the passageway. The valve body is constituted by an annular member provided with a chimney in which an operating shaft is mounted. The annular member is supported in leak-tight manner by a bearing ring having a greater thickness in the radial direction than the wall of the annular member. The bearing ring is inserted between the two end portions of the piping system and forms part of the valve body under operational conditions.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: December 13, 1983
    Inventor: Jean Gachot
  • Patent number: 4418889
    Abstract: A novel seat especially adapted for a butterfly valve is provided which is formed both of metal and "soft" material so as to furnish a "bubble tight" seal in normal operating conditions and a metal-to-metal seal in fire situations. The seat is uniquely constructed and is permanently deformed by the disc or closure member of the valve to form a precise size and configuration corresponding to the size and configuration of the disc.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: December 6, 1983
    Assignee: Xomox Corporation
    Inventor: Bernd Krause
  • Patent number: 4398696
    Abstract: This invention concerns a butterfly valve having a resilient, adjustable seat for pivoting disc. The seat comprises an elastomeric seating attached to a clamping ring which slides along the walls of the first portion of the flow passage extending through the body. A plurality of actuators extend through the clamping ring and seat ring into an axial annular wall to initially compress the seat ring. The flow passage is configured so that the axial wall of the clamping ring is uniformly exposed to the fluid pressure in the first passage portion.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: August 16, 1983
    Assignee: General Signal Corp.
    Inventors: Dezso Szilagyi, John P. Cunningham, Robert L. Bowlby
  • Patent number: 4325411
    Abstract: A seal for a gas isolator which comprises a cantilever leaf spring to be attached to a fixed frame or a movable member of the isolator and a bias spring acting on the leaf spring, wherein the leaf spring is bent or curved when unstressed whereby in the sealing position of the seal the stress induced in the bias spring will be the same as that induced in the leaf spring where the bias spring and the leaf spring seal have the same section modulus per unit length of seal.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: April 20, 1982
    Assignee: Grovag Grossventiltechnik A.G.
    Inventor: Anton F. Squirrell
  • Patent number: 4324383
    Abstract: The actuator shaft of a butterfly valve rotates 90 degrees to open or close an associated flow interrupter. As the shaft rotates its 90-degree motion is imparted to associated link members and the flow interrupters that are operably connected to the shaft. Thus, a drive link, secondary shaft and vane, as well as the support trunnions, are rotated simultaneously. This arrangement permits the seating of the seal on an axis which coincides with the axis of the actuator shaft and the sealing effected is bidirectional.
    Type: Grant
    Filed: September 11, 1980
    Date of Patent: April 13, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: Anthony J. Ferro
  • Patent number: 4294428
    Abstract: A butterfly valve comprising a valve body mounted on a valve stem in a valve housing. The valve housing is provided with valve seats to contact the periphery of the valve body when the valve is closed. Elastic seal members are disposed between the end surfaces of the valve seats and the valve stem in a manner to surround the latter. The butterfly valve of the invention further comprises tubular holder members rotatable relative to the valve stem and fitted with the elastic seal members on outer parts thereof.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: October 13, 1981
    Assignee: Kubota, Ltd.
    Inventors: Yoshitsugu Okada, Osamu Nakai
  • Patent number: 4290615
    Abstract: A butterfly valve having a split sealing ring in a groove in the interior of the passageway therethrough, the sealing ring having mating ends of a tongue and groove construction or the like.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: September 22, 1981
    Assignee: International Telephone and Telegraph Corporation
    Inventor: John P. Etcheverry
  • Patent number: 4281818
    Abstract: This invention concerns a butterfly valve having a resilient, adjustable body seat for the pivoting disc. The seat comprises a T-shaped elastomeric ring which is confined at one end by the transverse wall of an annular groove in the valve body and that another end by a clamping ring which slides along the wall of the flow passage extending through the body. The clamping ring is forced against the seat ring by a plurality of individual screw actuators spaced around its circumference and therefore selected portions of the seat ring can be compressed as needed to produce a leak-free seal around the entire periphery of the pivoting disc. The T-shaped elastomeric ring is held in place solely by mechanical forces in order to permit removal, maintenance, and replacement thereof.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: August 4, 1981
    Assignee: General Signal Corporation
    Inventors: John P. Cunningham, Dezso Szilagyi
  • Patent number: 4248404
    Abstract: A wafer type butterfly valve having a spherical segment body interior contoured to receive a disc seal having upstream and downstream seals. The seals are configured to fit disc grooves and are curved to fit the body contour. Mechanical retainers are provided and there is provision for adjustably applying pressure to the seals.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: February 3, 1981
    Assignee: Allis-Chalmers Corporation
    Inventor: Holliday L. Goldman
  • Patent number: 4230154
    Abstract: A combination valve assembly is provided for controlling fluid flow through a housing within which a ball element is operatively positioned and has a throttle valve element operatively mounted within its bore. The ball element has a latching slot to receive a latching spline carried on the inner end of an outer sleeve-like stem that extends through the side wall of the housing. The throttle valve is operated by a stem extending inwardly along the outer sleeve stem which operates the ball element. The throttle valve element may be set for any desired size of fluid control opening, and may have either a bubble or a sealed closing-off fit within the bore of the ball element.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: October 28, 1980
    Inventor: Adolphe W. Kalbfleish
  • Patent number: 4220314
    Abstract: A butterfly valve construction for use particularly on pipelines through which fluid under pressure is adapted to flow and to be selectively cut off. The butterfly valve disc is rotatably supported within the valve casing. Within the valve casing at a region whereat the valve disc is adapted to be turned for closing an elastomeric ring is supported and a plurality of clamp ring segments are supported about the casing periphery to abut one face of the elastomeric ring. Each clamp segment is adjustable to a fixed selective position by positively acting means to compress the elastomeric ring against an internal surface of the disc, thereby also extending the ring in a direction toward the valve disc edge when the latter is in a closed position. This extension is adequate to force the elastomeric ring to fit tightly to the valve ring at valve closing times and directly form a tight seal thereto.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: September 2, 1980
    Assignee: Axel Johnson Corporation
    Inventor: C. Thomas Lynch
  • Patent number: 4174557
    Abstract: A method of mounting valve seats in a butterfly valve comprising a valve body mounted in a valve stem in a valve housing. The valve seats are attached to the valve housing so as to contact the periphery of the valve body when the valve is closed. End surfaces of the valve seats are adjusted relative to the valve stem and seal members by means of first bolts. Then, the first bolts are replaced with third bolts for pressing the valve seats against the periphery of the valve body.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: November 20, 1979
    Assignee: Kubota, Ltd.
    Inventors: Yukio Goto, Osamu Nakai, Ikuo Yoshimori