Butterfly Valve Patents (Class 251/173)
  • Patent number: 10683937
    Abstract: Exemplary embodiments are directed to butterfly valves, generally including a body assembly. The body assembly generally includes a body, a disc rotationally disposed inside an opening of the body, a bearing disposed inside the disc and the body, and a stem passing through the disc, the bearing and the body. The bearing generally includes an internal bearing edge. The stem generally includes an external stem edge to engage the internal bearing edge to prevent stem blowout from the body. Methods of assembling and positioning a butterfly valve are also provided.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: June 16, 2020
    Assignee: Hayward Industries, Inc.
    Inventors: Paul M. Gutmann, Joshua Lee Hoots, Gary A. Moren, Jon Terence Stone
  • Patent number: 10487923
    Abstract: Systems provide and methods utilize a multi-bar linkage in conjunction with an actuator to provide mechanical advantage which increases as a control surface moves towards the extremes of its operating envelope.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: November 26, 2019
    Assignee: Whippany Actuation Systems LLC
    Inventor: Shijie Liu
  • Patent number: 10465796
    Abstract: Sealing arrangement of a fluid system for use with cryogenic media, said arrangement comprising a sealing ring in which a first system component is connected to a second system component by means of the sealing ring which sealing ring further has a first sealing surface which sealingly engages the first system component and the sealing ring has a second sealing surface which sealingly engages the second system component which first sealing surface and second sealing surface of the sealing ring are designed such that the first and second system components in the area of the sealing surfaces extend radially within the sealing ring in a section plane which extends parallel to the direction of contraction, and the sealing ring when exposed to cold, contracts thermally to a greater extent than the first system component and the second system component.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: November 5, 2019
    Assignee: SAMSON AG
    Inventor: Andreas Sander
  • Patent number: 10260656
    Abstract: A vacuum valve placed between a vacuum vessel and a vacuum pump to adjust a valve opening degree using an operating fluid includes a packing mounted in a recessed groove of a piston. The packing is provided with a contact portion on a radially inner side and a contact portion on a radially outer side, and a slide-contact portion contacting with an inner peripheral surface of a cylinder. A portion between the contact portion and the slide-contact portion has a thin thickness.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: April 16, 2019
    Assignee: CKD CORPORATION
    Inventors: Minoru Ito, Masayuki Watanabe, Seiji Hashiguchi
  • Patent number: 10184567
    Abstract: A butterfly valve has a housing that has an annular valve seat and a butterfly disk that has an annular valve seat. At least one of the valve seats is a spring seat that has an annular mounting portion and an axially opposite annular engagement portion. The engagement portion is configured to contact the other valve seat and resiliently deform radially under hoop stress caused by the contact as the butterfly disk moves to the closed position. The engagement portion is connected to the main body of the respective one of housing or the butterfly disk by the mounting portion. The mounting portion is attached to the main body of the respective one of housing or the butterfly disk in a manner such that the mounting portion can articulate relative to the main body of the respective one of housing or the butterfly disk as the engagement portion resiliently deforms radially.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: January 22, 2019
    Inventor: Thomas A. Hartman
  • Patent number: 10167958
    Abstract: A vacuum pressure control apparatus includes an annular elastic seal member formed with a valve seat, and a doubly eccentric butterfly valve element configured to come into contact or separate from the valve seat. The vacuum pressure control apparatus is to be placed on a pipe connecting a vacuum chamber and a vacuum pump. The vacuum pressure control apparatus is configured to rotate the butterfly valve element in a first direction from a first valve closed position corresponding to an initial state to change vacuum pressure in the vacuum chamber. The vacuum pressure control apparatus further includes a control unit configured to rotate the butterfly valve element in a direction opposite to a first direction so that the butterfly valve element is moved to a second valve closed position different from the first valve closed position.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: January 1, 2019
    Assignee: CKD CORPORATION
    Inventors: Yasunori Nishimura, Masayuki Watanabe, Seiji Hashiguchi
  • Patent number: 9945486
    Abstract: A valve assembly having a valve housing, the valve housing defining a passageway. A flapper valve arranged within the passageway is coupled to a rotatable valve shaft. A flexible wall, sealed along opposed edges to the valve housing, is controllable to at least two positions. The first position seals against the flapper valve and the second position releases the flapper valve allowing for ready movement of the valve.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: April 17, 2018
    Assignee: MKS Instruments, Inc.
    Inventor: Gordon Hill
  • Patent number: 9879789
    Abstract: The disclosed embodiments include a ball valve seal having a main body and a seal finger extending from the main body, wherein the seal finger is configured to extend from the main body and contact and flex against an outer surface of a ball body of the ball valve seal when the ball valve is assembled.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: January 30, 2018
    Assignee: Cameron International Corporation
    Inventor: Ronald Wayne Webb
  • Patent number: 9752702
    Abstract: An operating valve includes a valve chamber which is formed in a main body having a passage, a valve body which is housed in the valve chamber and has a passage corresponding to the passage of the main body, a rotary shaft which is detachably connected to the valve body, an operating member which operates a rotation of the rotary shaft, and a bias member which biases the rotary shaft to a position of the valve body.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: September 5, 2017
    Assignee: FUMOTO GIKEN CO., LTD.
    Inventors: Ryohei Yamamoto, Yuho Yamamoto, Naoyuki Yamamoto
  • Patent number: 9551423
    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: Grant
    Filed: September 22, 2015
    Date of Patent: January 24, 2017
    Assignee: Dynamic Air Inc.
    Inventor: Robert Hansen
  • Patent number: 9470318
    Abstract: Provided is an eccentric valve and a manufacturing method thereof. The eccentric valve has a tri-offset structure, and comprises: a valve body, a valve seat, a valve unit, a valve stem and a seal. The disc-shaped valve unit is disposed in a through hole centered in the valve body. The valve stem penetrates shaft holes on the valve unit and the valve body. Rotating the valve stem causes rotation of the valve unit for closing/opening the through hole. The valve seat is mounted on the inner surface of the through hole, and the seal is mounted on the outer surface of the valve unit. When the through hole is closed, the valve seat and the seal are mutually engaged. The inner surface of the valve seat is part of an oblique cone. The seal is a centrosymmetric ring, of which the outer surface is cambered.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: October 18, 2016
    Assignee: JDV CONTROL VALVES CO., LTD.
    Inventor: Yi-Ming Fan
  • Patent number: 9464959
    Abstract: A leak detecting device for water filled vessel such as a swimming pool. An annular resilient seal having a central opening contacts the surface of the vessel under water and creates a seal between the resilient seal and the vessel. A rigid housing open in its interior is coupled to the resilient seal and has an opening for an inlet to deliver fluid into the interior of the housing, or couple a flow meter thereto to measure the fluid flow, or deliver a dye into the housing and through the central opening of the resilient seal.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: October 11, 2016
    Inventor: Mark D. Marino
  • Patent number: 9383020
    Abstract: High temperature seals for use in rotary valves are described herein. An example seal for use with a rotary valve includes a primary seal to engage a flow control member when the primary seal is in a first condition and a secondary seal at least partially disposed within the primary seal. The primary seal is to prevent the secondary seal from engaging the flow control member when the primary seal is in the first condition and the secondary seal is to engage the flow control member when the primary seal is in a second condition.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: July 5, 2016
    Assignee: Fisher Controls International LLC
    Inventor: Trenton Frank Jackson
  • Patent number: 9333381
    Abstract: A safety fitting for blocking a line, includes a blocking body that is located in a widened section of a housing, can be guided linearly in the direction of flow of the line and is held in an open position. The blocking body can be moved under the influence of a pressure fluctuation in the line or moved actively into a sealing position. The housing has a cylindrical sealing section, in which the blocking body engages with a cylindrical section thereby forming a cylindrical annular gap.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: May 10, 2016
    Inventor: Dominic Becker
  • Patent number: 9121109
    Abstract: A body for an actuated valve, the actuated valve comprising flow regulating means for regulating the flow of a fluid between an input bore and an output bore of a barrel, and actuating means for controlling a position of the flow regulating means, the body comprising: a barrel having at least the input bore and the output bore; an actuating volume inside of which at least part of the actuating means can be placed, wherein the barrel and the actuating volume are integrally formed in a single piece.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: September 1, 2015
    Assignee: Generale de Robinetterie Industrielle et de Systemes de Surete S.A.
    Inventors: Olivier Fache, Eric Vincent, Eric Gest, Damien Bergot
  • 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
  • Patent number: 8714521
    Abstract: Butterfly valves comprise a valve seat comprising a generally S-shaped cross-section and a valve seat retainer configured with appropriately shaped cooperating surfaces. Fluid control systems comprising such a butterfly valve are also disclosed.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: May 6, 2014
    Assignee: Flowserve Management Company
    Inventors: Michael P. Nelson, Laren J. Winkel
  • 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
  • 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: 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: 8123195
    Abstract: A pressure control butterfly valve includes a valve disc rotatable in a vertical direction relative to a flow passage in a body, a seat ring reciprocating in a direction of the flow passage to allow a valve seat seal part to abut on and separate from the valve disc, and a valve opening/closing mechanism provided with an airflow path to which air is supplied in a direction of separating the seat ring from the valve disc and with a spring for biasing the seat ring toward the valve disc. The valve opening/closing mechanism is for nonslidably rotating the valve disc from which the seat ring has been separated by supply of air to the airflow path and for allowing the seat ring to abut on and separate from the valve disc by means of the supply of air to the airflow path and the biasing force of the spring when the valve disc has been rotated to a valve-closed state, thereby controlling pressure in the flow passage.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: February 28, 2012
    Assignee: Kitz SCT Corporation
    Inventor: Toshiaki Iwabuchi
  • Patent number: 7802424
    Abstract: An exhaust device for adjusting an exhaust gas cross sectional area of an exhaust passage in a combustion engine includes a valve body arranged in the exhaust passage communicating to an exhaust port of the combustion engine; a valve shaft fixed or integrally formed to the valve body and arranged so as to transverse the exhaust passage, the valve shaft changing the opening of the valve body by turning with the valve body about an axis of the valve shaft; a pair of bearing members for supporting rotatably the valve shaft at both ends thereof in a axial direction of the valve shaft; and a stopper arranged on the valve shaft so as to face an end face on the inward side of the exhaust passage of each bearing member in the axial direction. The stopper is restricted in the axial direction by the end face of each of the bearing members so that the valve body and the valve shaft do not move in the axial direction.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: September 28, 2010
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Tatsuhiko Kanzawa, Kazumasa Wakahara, Naoki Tamai, Yota Katsukawa, Akira Soeda, Hidehiko Yamamoto
  • Publication number: 20090272926
    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: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Inventor: James R. Steele
  • Patent number: 7478816
    Abstract: Apparatus for increasing stiffness in a seal are disclosed. A disclosed apparatus includes a first flexible member having a curved sealing surface and a second flexible member adjacent to a retainer side of the first flexible member. The second flexible member is configured to increase a stiffness of the first flexible member in one of a plurality of flow directions.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: January 20, 2009
    Assignee: Fisher Controls International, LLC
    Inventors: Jason G. Olberding, Douglas J. Boyd
  • Patent number: 7007926
    Abstract: The invention relates to a valve comprised of a housing with a valve seat for a flap that is rotatably mounted on a drive shaft. The exterior of the flap is provided with a first piston sealing ring and a second piston sealing ring that are placed inside an encircling groove of the flap. Each sealing ring is provided in the form of a metal ring. The first ring has a first gap and the second ring has a second gap that are not aligned with one another. The invention also relates to the use of said valve.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: March 7, 2006
    Assignee: Siemens AG
    Inventors: Peter Kohlen, Michael Rennen
  • 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: 6722630
    Abstract: A shut-off device (1) includes a housing (2) and a butterfly valve (4). The butterfly valve (4) can be swivelled using a drive shaft (3). When the butterfly valve (4) is closed, the butterfly valve (4) is sealed off from the housing (2) and from the pipe connection by an annular seal (7). The annular seal (7) is held on a face (5) of the housing (2) by a backup ring (6). The annular seal (7) is attached to the backup ring (6) using two annular projections (11, 12). The two annular projections (11, 12), respectively, interface with annular grooves (13, 14) provided on the backup ring (6). A fluid pressure chamber (22) is formed between the backup ring (6) and the annular seal (7), and a fluid connection pipe (24) extends through the backup ring (6) into the fluid pressure chamber (22).
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: April 20, 2004
    Assignee: Warex Valve GmbH
    Inventor: Gerhard Oberbeck
  • Publication number: 20030183796
    Abstract: A hand-operated hemispherical or spherical valve that provides an improved seal when dealing with fluids containing, or consisting entirely of, particulate matter is provided by the present invention. The valve utilizes an inflatable elastomeric valve seat that interacts with a primary closing member to permit or restrain the flow of fluids or particulate matter in a channel. The valve is opened and closed by turning a handwheel that is connected to a drive shaft. A sleeve having a cam is mounted on the drive shaft such that the cam engages a pressurized gas supply switch that inflates the inflatable elastomeric valve seat or seats when the hand wheel is turned to a closed position. Conversely, when the hand wheel is turned to an open position, a valve drive shaft, key and keyway function in conjunction with the drive shaft to turn the sleeve and disengage the cam such that the elastomeric valve seats are deflated prior to the primary closing member moving out of the closed position.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Inventor: Michael F. Crawley
  • Patent number: 6533241
    Abstract: A retaining piece of a ball valve is provided with an engaging surface and a groove defined to provide resilience to the engaging surface which engages with an outer surface of a ball. With such an arrangement, the engagement between the outer surface of the ball and the engaging surface is fluid-tight. Furthermore the engaging surface is resilient and is able to deform slightly to suit the surface of the ball even after a long-term use, and therefore prolongs the operation life of the ball valve.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: March 18, 2003
    Inventor: Pin-Neng Chen
  • Patent number: 6412755
    Abstract: A sealing member 11 made of an elastic material secured to the outer peripheral edge of a door plate 10 is provided with support portions 11a and 11b that extend in a direction to intersect the door plate 10, and the support portions 11a and 11b are directly supported by the outer peripheral edge of the door plate 10. Sealing portions 11c and 11d pressed onto a sealing surface 12a of an air passage casing 12 are so formed as to be directed toward the central portion of the door from the support portions 11a and 11b, and the sealing member 11 is folded, in cross-section, from the outer peripheral edge of the door plate 10 toward the central portion of the door due to the support portions 11a and 11b and the sealing portions 11c and 11d.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: July 2, 2002
    Assignees: DENSO Corporation, Shimizu Industry Col, Ltd.
    Inventor: Masahiro Ito
  • Patent number: 6149130
    Abstract: The valve includes a closure disc (34) sealable at its rim to a valve seat (18) so that in this position the seat (18) and rim define between them an annular space (54) which is connected to a port (60) by passages (54, 56, 58) extending through a mating face (e.g. carbon fibre gasket (22)) of the valve seat (18). As shown the space (54) is a recess in the disc rim defined between fibre seal rings (46, 48) but other arrangements are disclosed in which the seal rings and/or recess may be accommodated in the valve seat. The port (60) may be used for leakage detection, pressure monitoring of bleeding or fluid injection.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: November 21, 2000
    Assignee: Solent & Pratt (Engineering) Limited
    Inventors: David Frederick Thurston, John Furness
  • Patent number: 6123318
    Abstract: A throttle body (11) has a through-bore (18), a circular throttle blade (20) of nominal uniform thickness is disposed within the through-bore and on a cylindrical shaft (22). The through-bore has two generally semi-circular ledges (56, 58) spaced upstream and downstream respectively from an imaginary flat plane that contains the shaft axis, each at a distance substantially equal to one-half the blade thickness. One ledge occupies essentially one semi-circumference of the through-bore for sealing with one of the opposite semi-circular perimeters of the throttle blade when the blade is closed, and the other occupies essentially an opposite semi-circumference of the through-bore for sealing with the other semi-circular perimeter of the blade when the blade is closed.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: September 26, 2000
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Robert J. Forbes, James Richard Rauch, Matthew Jon Edwards
  • Patent number: 6116575
    Abstract: A seat structure for a ball valve which includes a seat member formed by rolling up an alternate stack of a thin steel plate and a thin graphite plate. The seat member is provided with a fixture portion fixed into an inner periphery of the valve body and a ball contact which is in contact with a surface of a valve ball provided between the inflow vent side and the outflow vent side. The seat structure improves an anti-abrasion and enables a secure functioning of the ball valve at a high temperature and high pressure.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: September 12, 2000
    Inventor: Jang Hong Ahn
  • Patent number: 6045121
    Abstract: A seating ring having a unique surface designed to engage with the convex outer surface of a valve disc, thereby providing a uniquely tight and bi-directional seal. The seating ring has a first, free end, an angled contact point adjacent to the free end, a convex sealing surface adjacent to the angled contact point, a hairpin curve adjacent to the convex sealing surface, and a second, mounting end.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: April 4, 2000
    Assignee: General Signal Corporation
    Inventors: James Edward Barker, Steven Kenneth Neu, LaVern Allen Lawrence
  • Patent number: 5947445
    Abstract: Rotatable valve assembly includes a mounting mechanism for rotatably mounting a valve in a housing. The mounting mechanism includes a shaft having an outside end extending through the housing. A conversion mechanism converts fluid pressure in the housing into torque exerted on the shaft. A release mechanism is located outside the housing for preventing rotation of the shaft and valve when the torque exerted on the shaft is below a selected magnitude. A linearizing mechanism converts the forces exerted on the release mechanism by the shaft into a linear force. The release mechanism allows the shaft to rotate when the torque exerted on the shaft and the linear force exerted on the release mechanism exceeds a selected magnitude. A seal is provided for sealing the gap between the valve and the housing in the closed position of the valve.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: September 7, 1999
    Assignee: BS&B Safety Systems, Inc.
    Inventors: Zhenggang Wang, John A. Tomasko, Stephen P. Farwell
  • Patent number: 5865422
    Abstract: A valve including a valve body having a centrally disposed aperture, a rotatable shaft, and a valve disc. The disc has a circumference with an outer edge and is disposed about the shaft such that the disc rotates to an open position and a closed position within the aperture. The valve body further includes a body moment arm about the circumference of the aperture, a body annular recess about the body moment arm and an annular seating ring retainer also about the circumference of the aperture. The seating ring retainer includes a retainer moment arm opposing the body moment arm and a retainer annular recess, a portion of which adjoins the body annular recess. An annular seating ring, also disposed about the circumference of the aperture, has a first end including a tip and a sealing surface adapted to contact the outer edge of the disc when the disc is in the closed position.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: February 2, 1999
    Assignee: General Signal Corporation
    Inventors: James Edward Barker, Steven Kenneth Neu, LaVern Allen Lawrence
  • 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: 5330156
    Abstract: A sealing arrangement for a valve or shaft is disclosed which is designed to respond to movements of a rotatable element in a particular manner and to increase sealing pressure with increasing fluid pressure. The seal undergoes a radial compressive type movement as the pressure within a vessel housing increases between opposed sealing sleeves and this causes an increase in the sealing pressure. This predetermined movement of the seal creates a spring bias in the seal, urging the seal to return to the original, less stressed condition. Preferably, the seal is of a composite structure and a particular component of the intermediate wall section creates this spring bias. This structure has improved operating characteristics and accommodates a wider range of resilient materials to be used for the sealing washer.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: July 19, 1994
    Inventor: Thomas P. McKavanagh
  • Patent number: 5295659
    Abstract: The present invention comprises an improved two-way dynamic shaft-sealing member for a fluid transport system having a butterfly valve with an inflatable seal with the improved shaft-sealing member including a rigid race secured to and carried by the interface portion of the inflatable seal to maintain the integrity of the interface portion of the seal with a compressible sealing ring located in the race and held in confinement by the race to hold the sealing ring in a sealing condition against the inside of the race and the outside of the shaft to prevent fluids from escaping therepast as the shaft is moved or the inflatable seal is inflated or deflated.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: March 22, 1994
    Assignee: Dynamic Air, Inc.
    Inventor: James R. Steele
  • Patent number: 5294091
    Abstract: A stop cock for a liquid container, comprising a substantially annular valve housing, a circular valve rotatably mounted in the valve housing, a handle mounted on an operational shaft for rotating the valve between a closed and open position, a seat mounted in the valve housing and cooperating with the valve in the closed position, characterized in that the handle (21) comprises a recess (28) for rotatably receiving a stop bush (29) that comprises a cam (30) which in the closed position cooperates with an indentation (42) of a top plate (24) arranged on a boss (9) and includes a circular passage for shaft (7), said stop bush (29) having an unround passage (33) for mounting a correspondingly formed driving shaft (34) of an unlocking lever (35), the handle (21) and the top plate (24) in a plurality of positions.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: March 15, 1994
    Assignee: Keystone International Holdings Corp.
    Inventor: Alfred van Eck
  • Patent number: 5203539
    Abstract: A pipeline valve is provided which includes a valve body having a spherical bore with a cylindrical valve seat. The cylindrical valve seat is positioned along the centerline of the spherical valve body and can be machined in the valve body. Alternatively, the valve seat can be an elastomeric material which is inserted into the valve body. The butterfly valve disk is conical in shape. In one embodiment, the disk is constructed from two halves, fastened together, having a movable T-seal perimetrial surface.The T-seal is received by a groove recessed within the disk. Behind the T-seal, an elastomer or linear expander biasing member can be disposed to force the T-seal in a direction towards the valve seat. The valve disk is connected to a control shaft by an attachment assembly which allows for self-alignment of the disk. The control shaft terminates in a forked end having two legs which define an aperture corresponding to coupling pads on either side of the disk.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: April 20, 1993
    Inventor: Gary M. Stary
  • Patent number: 5160118
    Abstract: A pipeline valve is provided which includes a valve body having a spherical bore with a cylindrical valve seat. The cylindrical valve seat is positioned along the centerline of the spherical valve body and can be machined in the valve body. Alternatively, the valve seat can be an elastomeric material which is inserted into the valve body. The butterfly valve disk is conical in shape. In one embodiment, the disk is constructed from two halves, fastened together, having a movable T-seal perimetrial surface. The T-seal is received by a groove recessed within the disk. Behind the T-seal, an elastomer or linear expander biasing member can be disposed to force the T-seal in a direction towards the valve seat. The valve disk is connected to a control shaft by an attachment assembly which allows for self-alignment of the disk. The control shaft terminates in a forked end having two legs which define an aperture corresponding to coupling pads on either side of the disk.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: November 3, 1992
    Inventor: Gary M. Stary
  • Patent number: 4905966
    Abstract: Seat structure of valves comprising a seat ring, at least one fixing member secured to a valve body and a concave provided between the body and the fixing member for setting the seat ring therein. The seat ring is provided with an inclined contact face to close a flow passage with a close contact with an inclined sealing face of a closure member and a deflective mounting plate to be sandwiched between the body and the fixing member so that the seat ring may be retained movably in response to a flow pressure in the concave both from one direction and from opposite direction of the flow passage. At the opposite side of the contact face, friction face is provided to slidably engage on a corresponding face provided at the fixing member or a substitute therefor. Said face is so inclined as to form a wedge with the inclined sealing face of the closure member.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: March 6, 1990
    Assignee: Okumura Engineering Works Co., Ltd.
    Inventor: Minoru Aoyama
  • Patent number: 4898363
    Abstract: In a fire-safe butterfly valve a polymeric seat ring is resiliently biassed by a resilient metal energizer ring to hold the polymeric seat ring engaged with the closed valve disc, and an independent metal sealing ring permanently engages with the closed valve disc.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: February 6, 1990
    Assignee: Charles Winn (Valves) Limited
    Inventor: Philip J. Burton
  • Patent number: 4872642
    Abstract: A seal mechanism for butterfly valve of concentric opening with press contacting seal, which comprises a ring-formed seal metal arranged surrounding the valve body under insertion in a radially displaceable manner in a circumferential groove formed around the circumference of the valve body, said seal metal having a rounded outer peripheral face; a seal metal disposed surrounding the inner wall of the valve casing and formed integrally therewith, with its seat face inclining relative to the conduit direction of the valve casing; and two tubular buffer rings inserted in said groove of the valve body in between the bottom of the groove and the inner circumference of the seat metal, each of said tubular buffer rings being split along its entire looping length on the upper or lower side of the ring so as to leave a C-shaped cross section to thereby provide a resilient support for said seal metal on said groove bottom at the neutral position on the seat face between the thrust force components in the inflow and th
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: October 10, 1989
    Inventor: Akira Oshima
  • Patent number: 4860994
    Abstract: A seal system for butterfly valves of concentric- or eccentric valve body closure, which comprises a circumferential receptacle groove formed around the circumference of the valve body; a seal metal extending over the circumference of the valve body and having curved outer ridge face, arranged inserted in said receptacle groove on the circumference of valve body so as to permit its radial displacement; a stripe of seat metal suitable for receiving said curved outer face of said seal metal upon closure of the butterfly valve to effect a fluid tight seal, said seat metal protruding from the casing inner face with its front face inclining relative to the axis of the valve casing to permit a tight fit thereof with said outer ridge of said seal metal, wherein a buffer ring having a sectional form permitting a resilient deformation, such as a C-shape, is inserted in said circumferential receptacle groove of valve body between the groove bottom and said seal metal in order to effect a resilient support of said seal
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: August 29, 1989
    Inventor: Akira Oshima
  • Patent number: 4836499
    Abstract: The present invention comprises a transport system having an annular inflatable seal which has an annular interior domed portion which expands as an integral unit until it contacts the edge of a butterfly valve which engages the domed portion to form a slight recess in the annular seal which provides an airtight and locking seal with the annular seal having a pair of annular resilient legs operable to return the annular interior domed portion to its original position to permit the butterfly valve to be opened.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: June 6, 1989
    Assignee: Dynamic Air Inc.
    Inventors: James R. Steele, Jerry W. Scherfenberg
  • Patent number: 4796857
    Abstract: A high performance butterfly valve utilizing a thin sheet metal annulus to provide sealing between a valve casing and a rotary disc type valving member. The design of the sealing element provides for a self-sealing at all pressures, with augmentation of the sealing action as a result of applied pressure differential. As maximum stresses in the thin metal sealing element are approached, the element becomes supported at an intermediate region, enabling effective performance at both low and high pressure limits.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: January 10, 1989
    Assignee: White Consolidated Industries, Inc.
    Inventors: William R. Hayes, Allan K. Shea
  • Patent number: 4712768
    Abstract: The disclosure is directed to a high performance butterfly control valve which may be applied and utilized in critical high pressure and/or high performance operation environments. In accordance with the invention, the vane of the butterfly valve is formed to include first and second diametrically opposed, asymmetrical projections, each extending from the periphery of the vane and each including a plurality of fluid control passages formed therethrough. The projection adjacent the downstream rotated periphery of the vane is formed to a generally smooth, streamlined configuration to minimize the overall volume of the vane, and to facilitate a smooth, turbulence free flow when the valve is in the full open position. Moreover, the projection adjacent the upstream rotated periphery of the vane is formed to a length of extension which is greater than the length of extension of the diametrically opposed projection.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: December 15, 1987
    Assignee: White Consolidated Industries, Inc.
    Inventors: Leroy E. Herr, Allan K. Shea, Timothy E. Kunkle