With Conduit Gripping Means (e.g., Wedge Ring) Patents (Class 285/232)
  • Patent number: 11215306
    Abstract: A gland assembly includes a gland including an annular ring defining a fastener hole; and a joint restraint assembly comprising a restraint base, the restraint base attached to the annular ring; and a cover including a cover portion removably attached to the restraint base; and a bolt stop portion covering the fastener hole, the bolt stop portion extending laterally outward from the cover portion.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: January 4, 2022
    Assignee: Mueller International, LLC
    Inventor: Aurelian Ioan Furcoiu
  • Patent number: 11149889
    Abstract: A gland assembly includes a gland including an annular ring defining a fastener hole; and a joint restraint assembly comprising a restraint base, the restraint base attached to the annular ring; and a cover including a cover portion removably attached to the restraint base; and a bolt stop portion covering the fastener hole, the bolt stop portion extending laterally outward from the cover portion.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: October 19, 2021
    Assignee: Mueller International, LLC
    Inventor: Aurelian Ioan Furcoiu
  • Patent number: 10655765
    Abstract: A fitting for coupling to a pipe includes a sleeve for receiving the pipe and a sealing member to provide a seal between the sleeve and the pipe. A pressure ring acts on a pressure member through adjoining slanting contacting surfaces of the pressure ring and pressure member, respectively. The sealing member is configured to be displaced from the slanting contact surfaces to preserve the life of the seal.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: May 19, 2020
    Assignee: Georg Fischer WAGA N.V.
    Inventors: Jeroen Wijlens, Michel Paul Hulsebos, Roel Alexander Maria Wellink
  • Patent number: 10571054
    Abstract: A preassembled pipe coupling and method for joining pipe segments in an end-to-end relationship. The coupling (100) includes three identical housing segments (110) joined end to end. Each housing segment (110) includes a pipe engagement surface defining a radius of curvature. The radii of curvature of the three housing segments (110) are identical. The third housing segment is connected to the first and second housing segments to define a first configuration and a second configuration of the coupling, in which the radii of curvatures are the same in the first and second configurations. In the first configuration, the three housing segments (110) are radially located about an annular gasket (400) to permit insertion of the pipe segment into the gasket (400). In the second configuration, the three housing segments are radially located about the annular gasket such that the gasket is compressed to form a fluid tight seal and the pipe engagement surfaces engage the outer surface of the pipe segment.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: February 25, 2020
    Assignee: Tyco Fire Products LP
    Inventor: Hsu Cheng-Sheng
  • Patent number: 10151412
    Abstract: A method of fastening a male member of a hydraulic line connector to a female member of the hydraulic line connector. The a female member has a cylindrical wall portion defining a bore having a frusto-conical surface, and an opposing pair of slits. A spring clip is provided that has a first leg featuring a first arcuate portion, a second leg featuring a second arcuate portion, and a closed end portion removably positioned between and attached to the first and second legs. The male member has a shoulder, a reduced portion, and a frusto-conical surface that tapers inward from the shoulder. The male member can be positioned in the bore of the female member so that the shoulder is engaged by the first and second arcuate portions of the first and second legs of the spring clip.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: December 11, 2018
    Assignee: Perfection Hy-Test Company
    Inventor: Arnaldo R. Bassaco
  • Patent number: 9605784
    Abstract: A pipe joint is disclosed that includes a housing wherein the housing defines a longitudinal axis and an inside surface, and includes a gripping assembly comprising a first gripping member comprising a first protruberance extending radially inward from an inner surface of the first gripping member, a second gripping member comprising a second protruberance extending radially inward from an inner surface of the second gripping member, and an interconnecting body comprising a resilient material. The interconnecting body connects the first gripping member to the second gripping member, and a clearance is defined between the interconnecting body and the inside surface of the housing. The joint can also include an annular seal positioned axially adjacent to the interconnecting body inside the housing.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: March 28, 2017
    Assignee: Mueller International, LLC
    Inventor: Paul Gifford
  • Patent number: 8567209
    Abstract: A refrigerator is provided. The refrigerator includes a body defining a storage space; a door selectively shielding the storage space; a container connecting part disposed in the storage space or the door; a water supply container separably coupled to the container connecting part, the water supply container including an opening for injecting water; an ice making device for making ice using the water supplied from the water supply container; a water supply passage fluidly connecting the water supply container to the ice making device, the water supply passage extending in an inside direction of the water supply container; and a pump connected to the water supply passage to supply the water within the water supply container into the ice making device. According to the refrigerator, installation cost is reduced, and quality and reliability are improved.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: October 29, 2013
    Assignee: LG Electronics Inc.
    Inventor: Sung Kyoung Kim
  • Patent number: 7883119
    Abstract: A composite gland sealing for the interlocking coupling of a housing end piece (8) including an anchoring groove (82), a plastic ring (14) and several locking inserts (20). Each locking insert (20) includes a radially external head (30) provided with a first front projection (50, 52) applicable against the annular front surface (90) of the anchoring groove (82). The head (30) comprises includes a second frontal projection (52, 50) radially shifted from the first front projection (50, 52).
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: February 8, 2011
    Assignee: Saint-Gobain Pam
    Inventors: Alain Percebois, François Maire, André Schneider, Roland Martin
  • Publication number: 20100148489
    Abstract: Tube connection (1) for pullout-resistant connection of an insertion end (2) of a tube (3) to a connection sleeve (4), with a retention ring (18) encompassing the insertion end (2) at the circumference and is disposed in an inner groove (12) of the connection sleeve (4), wherein the insertion end (2) projects beyond the retention ring (18) by an excess length (25) in the insertion direction of the tube, and a sealing ring (34), preferably a lip sealing ring (35), which circumferentially encompasses the insertion end (2) is disposed in a ring groove (33), adjacent to the ring groove (12) and at a distance from it in the insertion direction of the tube end, and the connection sleeve (4) has a slit-shaped wall cutout (13) that allows radial insertion of the retention ring, over a partial region of the circumference of the sleeve section (11) that has the inner groove (12), wherein the wall cutout (13) extends over a cross-section sector whose inner angle is less than 180°.
    Type: Application
    Filed: March 18, 2008
    Publication date: June 17, 2010
    Inventors: Franz Johann Pohn, Christian Berger
  • Publication number: 20100084859
    Abstract: A subsea coupling comprises a male coupler having a probe and a female coupler comprising a socket for the reception of the probe. The couplers each include a valve which is openable on mating of the couplers to provide communication with the socket. The socket includes a recess accommodating an annular seal for providing a radial seal between the probe and the socket. In one embodiment the leading edge of the probe includes at least one relief channel for allowing the escape of hydraulic fluid entrapped between the probe, the seal and the recess when the couplers are made up. There may be a stand-off ring disposed between one end of the recess and the inner side of the seal. In another embodiment the relief channel is provided in the socket.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 8, 2010
    Inventor: Douglas Frederick Kirkman
  • Patent number: 7537248
    Abstract: An apparatus for restraining pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline featuring an improved restraining and sealing mechanism. The restraining and sealing mechanism includes a circumferential housing and a companion sealing ring which are received within a mating groove provided in the belled end of a female pipe. The circumferential housing has an interior region which contains a gripping ring insert. The sealing ring and housing are integrally located within a belled pipe end during belling operations.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: May 26, 2009
    Assignee: S & B Technical Products, Inc.
    Inventors: Jim Jones, Bradford G. Corbett, Jr., Gerardo Darce, Randall Chinchilla
  • Patent number: 7293572
    Abstract: Cleaning equipment for cleaning a moving surface particularly in a paper machine includes a washing head with a chamber in it opening onto the surface to be cleaned and nozzle elements arranged inside the chamber. The cleaning equipment also includes vacuum means and removal means. The vacuum means are arranged in the washing head. In addition, the washing head is arranged to be movable relative to the removal means that are fitted in a fixed manner.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: November 13, 2007
    Assignee: Metso Paper, Inc.
    Inventors: Tomi Honkala, Jari Laine, Petteri Venetjoki
  • Patent number: 7243954
    Abstract: A pipe joint with earthquake-proof function is provided. A lock ring engages with an accommodating groove of a socket. A tapered surface converging toward the opening side of the socket is formed on at least one of a portion of the lock ring engaging the accommodating groove and a portion of the accommodating groove engaging the lock ring. When a disengagement prevention force in a pipe axial direction for preventing a spigot from being disengaged from the socket by the engagement is transmitted from an accommodating groove to the lock ring through the tapered surface, a line of action of a component force of the disengagement prevention force in a direction perpendicular to the tapered surface passes the opening side of the socket of a contacting point between a socket bottom end part of the lock ring and the outer periphery of the spigot along the outer surface of the spigot.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: July 17, 2007
    Assignee: Kubota Corporation
    Inventors: Toshio Toshima, Takashi Yokomizo, Takeshi Hara
  • Patent number: 6913292
    Abstract: A coupling for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket and a first expanded region adjacent to the socket and a second expanded region adjacent to the first expanded region. A sealing member is positioned in the first expanded region, a retainer is positioned in the second expanded region and a support washer having transversely oriented radial and coaxial flanges is positioned adjacent to the retainer. A lip turned inwardly on the second expanded region overlaps the radial flange and captures the support washer, retainer and sealing member within the coupling. The retainer has a plurality of radial teeth angularly oriented to engage a pipe and prevent its removal from the coupling.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: July 5, 2005
    Assignee: Victaulic Company of America
    Inventors: Ronald R. Snyder, Sr., Charles E. Wilk, Jr., Lawrence W. Thau, Jr., Douglas R. Dole, Terrance M. Carom
  • Patent number: 6874822
    Abstract: A resinous tube has opposite ends into one of which a mating member is fitted and with which the mating member is connected, and includes a sealing ring, a fastening cap, and a clamp. The sealing ring is disposed on an inner peripheral surface of the opposite end, and contacts elastically with an outer peripheral surface of the mating member. The fastening cap is disposed on the inner peripheral surface of the opposite end on an outer end side thereof with respect to the sealing ring, and contacts elastically with the outer peripheral surface of the mating member. The clamp is disposed on an outer peripheral surface of the opposite end, which is provided with the fastening cap on the inner peripheral surface, and tightens the fastening cap. The resinous tube exhibits good sealing and fastening abilities, requires less component parts, and can be connected with any mating members.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: April 5, 2005
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Zenichi Yasuda, Natsushi Miura, Tomokazu Hori
  • Patent number: 6851728
    Abstract: A pipe-coupling device comprises a joint body having an opening with external threads to receive a pipe, a locknut having internal threads engaged with the external threads of the joint body, an annular core member disposed within the locknut, and a plurality of locking members retained in apertures of the core member to be spaced circumferentially apart from each other. Upon tightening rotation of the locknut around the joint body, the internal conical surface of the locknut slidably contacts with the conical surfaces of the locking members so as to press the locking members radially inwardly, to cause the gripping portions of the locking members come into gripping engagement with the outer periphery of the inserted pipe, thereby strongly preventing withdrawal of the pipe from the joint body even when the pipe is made of hard material.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: February 8, 2005
    Assignees: Hakko Metal Industries Ltd.
    Inventor: Masafumi Minami
  • Patent number: 6805385
    Abstract: In a non-detachable press fit arrangement between an end portion of a metal pipe and a socket of a fitting, the socket defines an interior space and is formed with an annular anchoring groove which faces the interior space for receiving a sealing ring. The press fit arrangement includes at least one holding element secured to the socket and cold formed together with the socket, whereby the holding element at least partially penetrates the material of the end portion of the metal pipe to realize a positive fit with the metal pipe.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: October 19, 2004
    Assignee: Franz Viegener II GmbH & Co. KG
    Inventor: Walter Viegener
  • Patent number: 6773040
    Abstract: A spacer-less type pipe joint comprises a press ring which has a protruding portion at its outer periphery and is fitted to an outer periphery of one end side of jointed pipe, a joint main body which has a protruding portion opposing the protruding portion of the press ring at a side opposing the press ring and a receiving opening portion which is extended toward the press ring at the inner peripheral side of the protruding portion of the joint main body and which is fitted to the outer periphery of the jointed pipe with a peripheral clearance being formed there between, a securing tool which can move the press ring in a direction of the joint main body, and a packing ring which is provided between the joint main body and the jointed pipe and fitted into the receiving opening portion by its elastic deformation due to direct press of the press ring moved by operation of the securing tool.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: August 10, 2004
    Assignee: Waterworks Technology Development Organization Co., Ltd.
    Inventors: Kikuo Saito, Akihito Totsugi
  • Patent number: 6692042
    Abstract: A profiled clamp connecting two pipes has an articulated clamp strip having sidewalls and a transverse portion connecting the sidewalls and a tensioning closure around the clamp strip. A conical metal ring is arranged in the clamp strip and has a radially inner edge with teeth having free ends positioned on a circle with a diameter that is smaller than an inner diameter of the sidewalls. The conical ring has a radially outer edge resting in a bend between sidewall and transverse part. The first pipe has a widened end section with a conical transition and a radial flange engaging between the sidewalls. The second pipe has a smooth end section inserted into the widened end section. The outer flange diameter is greater than the inner sidewall diameter and smaller than the inner diameter of the transverse part. A seal rests between the smooth end section and the conical transition.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: February 17, 2004
    Assignee: Rasmussen GmbH
    Inventors: Wolfgang Barbett, Markus Krämer, Rainer Heise, Manfred Krüger
  • Patent number: 6557825
    Abstract: A connector assembly for a plumbing appliance and for sealingly attaching an air admittance valve in a vent pipe. The connector assembly has an elastomeric sealing gasket with an interior threaded bore which is expanded by a rigid bottom portion of an air admittance valve. The bottom portion of the valve body has exterior threads and an expander portion which cooperates with the lower sealing ring of the sealing gasket to compress the elastomeric body of the sealing gasket against the interior of the vent pipe.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: May 6, 2003
    Assignee: Cherne Industries Incorporated
    Inventors: Richard T. Stone, Raun A. Kopp
  • Patent number: 6523865
    Abstract: A pipe connection includes a first having a male end and a second pipe having a female end and a gasket. The female end has a recess area sized to accept the gasket. The gasket has at least one flexible protrusion extending radially towards the center of the pipe forming a diameter that is less than the diameter of the male end which frictionally engages the male end of the second pipe. Optionally, the female end may include rigid dimples that exert pressure onto the male end to prevent the two pipes from separating. The pipe connection may be used in conjunction with a clamp.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: February 25, 2003
    Assignee: Uniflex
    Inventors: Jules Isendam, Michael Brunt, Wayne Gooderham
  • Patent number: 6354634
    Abstract: A coupling device for joining pipe ends has at least one pressing sleeve which can be slipped on a pipe end and pressed together with the pipe end. The pressing sleeve is elastically designed in the area of its inner surface pressed on the pipe end so that an expansion of the pipe end caused by temperature variations can be absorbed by elastic shear deformation of the elastic area, without causing the pipe end to slide in the pressing sleeve.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: March 12, 2002
    Assignee: Novopress GmbH Pressen und Presswerkzeuge & Co. KG
    Inventor: Helmut Dischler
  • Patent number: 6161880
    Abstract: An end fitting/pipe coupling in which to receive a flexible pipe end to be joined includes an annular seal of chevron configuration supported in the fitting for surrounding the received pipe end and is comprised of an elastomer composition defining a plurality of uniformly spaced parallel separations each containing an annular metallic shim adapted to increasingly grip the pipe in response to a pull out force encountered by the pipe end.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: December 19, 2000
    Assignee: Kellogg, Brown and Root, Inc.
    Inventor: George W. Peppel
  • Patent number: 6142484
    Abstract: A composite gasket for forming a seal between a pipe bell and a spigot comprises a first axially disposed portion formed of an elastomeric material and has a first leading edge and a first trailing edge, and a second axially disposed portion, adjacent the first axially disposed portion, formed of a generally non-elastomeric substantially rigid plastic, which comprises multiple, axially extending, laterally spaced apart, ramp-like projections separated by circumferential valleys, which expose elastomeric material. Fluid entering the valleys during a high pressure surge force the composite gasket into a tighter seal.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: November 7, 2000
    Assignee: Vassallo Research & Development Corporation
    Inventor: Jose E. Valls, Jr.
  • Patent number: 6062611
    Abstract: A locked pipe joint between a socket (3) of a first pipe (4), and a smooth end (1) of a second pipe (2) inserted in the socket with the interposition of an annular sealing gasket (5). The joint includes a raised bead (6) integral with the smooth end, a split metal retaining ring (7), and a rear support surface (9) for the split ring. The split ring includes a series of indentations (19) on the circumference of at least one face (16), in which the indentations are configured to allow the necessary diametric contraction of the ring by the crossing of its ends, and the subsequent expansion of the ring to lock the joint.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: May 16, 2000
    Assignee: Pont-A-Mousson SA
    Inventors: Alain Percebois, Francois Maire, Roland Zacharie
  • Patent number: 5507537
    Abstract: A fluid connector (40) for gripping and sealing on an external surface of a fluid conductor (61). The fluid connector (40) includes a seal (62) which is forced into a bore (70) of a piston (66) having a smaller diameter than the seal, so that the seal (62) is radially squeezed to seal the external surface of the fluid conductor (61). A collet assembly (50) of the fluid connector (61) is forced to reduce the diameter to grip the external surface of the fluid conductor (61). A spring (68) which is disposed in the piston (66) compensates seal preload mechanism for variations in fluid conductor size.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: April 16, 1996
    Assignee: FasTest, Inc.
    Inventors: Stanlee W. Meisinger, Daniel J. Cornish
  • Patent number: 5360218
    Abstract: A socket joint for pressurized fluid carrying pipes incorporates a radially-compressed gasket 4 locked in position by toothed inserts 12 each having an inclined face 27 which slides on and bears against a similarly inclined face 26 of a support insert 11 embedded in the anchoring heel 14 of the gasket which is seated in the anchoring throat 7 of the socket.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: November 1, 1994
    Assignee: Pont-A-Mousson S.A.
    Inventors: Alain Percebois, Philippe Renard, Patrick Berraud
  • Patent number: 5297826
    Abstract: A socket joint for ductile cast iron pipes is locked by toothed locking ring inserts 15 and a counter-flange 11. At least one elastic lip 19 is inserted between the locking ring and the rear face of a rigid stop ring which encloses the smooth or male end of the pipe 1.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: March 29, 1994
    Assignee: Pont-A-Mousson S.A.
    Inventors: Alain Percebois, Andre Remy, Jean-Pierre Vitel
  • Patent number: 5269569
    Abstract: A wall at one end of a chamber in the bell end of an enclosing pipe is adapted to receive the nose end of toothed metal segments to prevent disengagement of pipes and to transfer radial forces into axial forces.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: November 23, 1993
    Assignee: United States Pipe and Foundry Company
    Inventors: Joe Weber, Lawrence S. Jones
  • Patent number: 5248168
    Abstract: A vibration absorbing, noise attenuating connector utilizing threadless coupling connecting means including a quick disconnect feature for use in hydraulic, pneumatic and refrigeration conduit systems.
    Type: Grant
    Filed: February 2, 1992
    Date of Patent: September 28, 1993
    Assignee: Aeroquip Corporation
    Inventors: Dennis B. Chichester, Roger A. Cassell
  • Patent number: 5197768
    Abstract: A pipe joint and a locking member for use with the pipe joint are provided for a bell and spigot type joint, the locking member being a separate element disposed axially outwardly of a fluid seal gasket within the bell end of a first of the pipe elements, the locking member being made up of an elastomeric backing member and at least one locking segment, the elastomeric backing member being adapted to seat in a first annular recess in the bell end, and against a radially inwardly protruding shoulder, this seating position urging the outer surface of the locking segment into contact with the wall of the first annular recess, to effect a constant, positive wedging action against a spigot end of a second pipe element inserted into the bell end of the first pipe element.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: March 30, 1993
    Assignee: American Cast Iron Pipe Company
    Inventor: Randall C. Conner
  • Patent number: 5150929
    Abstract: A pipe joint consists of a sleeve (2) surrounding a socket chamber (3) for receiving a spigot (5). A gland (9) extends into the socket chamber (3) against a heel portion (12) of a sealing ring (7). Axial movement of the gland (9) forces the sealing ring (7) and causes a leading nose portion (14) of the sealing ring (7) to be deflected radially inwardly by the internal profile of the sleeve (2) against the external surface of the spigot or pipe end (5), thereby forming a seal. The heel portion (12) of the seal ring (7) maintains substantially the same radial position in the socket (3).
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: September 29, 1992
    Assignee: Stanton plc
    Inventor: Cyril B. Greatorex
  • Patent number: 5067751
    Abstract: A self-actuating restraining gasket having optional integral sealing means is provided which is used particularly in bell-and-spigot pipe joints or joints employing pipe appurtenances, and more particularly in joints to be assembled in the field, the bell end of the pipe or pipe appurtenance to be employed having an annular recess adapted to receive the gasket therein, the gasket further employing a plurality of pairs of cooperating metal retaining elements embedded in the elastomeric gasket, the pairs of retaining elements being spaced apart around the circumference of the gasket, each pair of retaining elements comprising a wedging member and a backing member for the wedging member, and wherein the pairs of retaining elements act as the self-actuating retention or restraining elements, and an optional compressible back part of the gasket acts as a fluid seal when a pipe spigot is inserted in the bell.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: November 26, 1991
    Assignee: American Cast Iron Pipe Company
    Inventors: Van T. Walworth, Steve L. DeBoalt
  • Patent number: 4863199
    Abstract: The inner surface of the open end of a socket for a pipe is formed with a taper portion and a lock ring is received on the inner periphery of the taper portion. The outer peripheral portion of the socket corresponding to the taper portion is tapered in the same direction so that the wall thickness of the socket at the taper portion has a suitable value. When a pull-out force acts on a spigot inserted in the socket, the wedge action of the taper portion presses the lock ring against the spigot, whereby the separation is prevented. If an excessive pull-out force acts thereon, the portion of the socket which has the suitable thickness is deformed for radial expansion so as to allow the pull-out of the lock ring. Thereby, the pipe joint and the pipe body are prevented from being broken by the excessive force.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: September 5, 1989
    Assignee: Kubota, Ltd.
    Inventors: Sadamune Hojo, Toshiyuki Iwamoto, Noriyuki Arakawa, Terutaka Narita
  • Patent number: 4805932
    Abstract: A spigot-and-socket joint which is secured against pulling apart, particularly for socket pipes manufactured by centrifugal casting or molding, wherein the spigot end of one pipe is pushed into the socket end of another pipe, with radial play, comprises a sealing ring and a gripping ring in the socket pipe, the gripping ring comprising a plurality of gripping segments mutually spaced circumferentially and each having a spherically convex radially outer surface and being interconnected in the circumferential direction by a vulcanized intermediate piece of rubber or the like, and a toothed configuration on the radially inner surface, so that when axial tensile forces arise at the joint, the toothed configurations are pressed radially inwardly against the spigot end by interaction of the spherically convex surfaces with an interior conical surface of the pipe socket which interior surface narrows in the direction of the distal end of the socket.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: February 21, 1989
    Assignee: Eisenwerke Friedrich Wilhelm Duker GmbH & Co.
    Inventors: Erich Imhof, Manfred Vorbeck
  • Patent number: 4699405
    Abstract: A coupling for forming a sealed engagement with a tubular member, the coupling comprising an annular housing having an engagement zone for receiving a tubular member to be engaged by the coupling, and comprising an engagement assembly positioned within the engagement zone. The engagement assembly comprises an annular gasket for sealing engagement with a tubular member upon axial compression of the engagement assembly. The annular gasket has a plurality of circumferentially spaced bores. A plurality of bolts for axial compression of the engagement assembly, are positioned to extend through the bores. The engagement assembly includes at least one washer for applying axial pressure to the annular gasket during axial compression of the engagement assembly. The engagement assembly further includes a gripping ring to be radially compressed upon axial compression of the engagement assembly to grip a tubular member when positioned in the engagement zone.
    Type: Grant
    Filed: April 15, 1986
    Date of Patent: October 13, 1987
    Assignee: International Clamp Company
    Inventor: Jack E. Miller
  • Patent number: 4676533
    Abstract: A reversible lock and seal apparatus for coupling swimming pool piping and fittings, comprising a frusto-conical U-cross section metal ring with longitudinally spaced circular rows of teeth, adapted to be cammed into piping by a follower coupled to the fitting for locking the piping to the fitting without need of piping threads or solvent cements, and squeezing a seal ring therebetween.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: June 30, 1987
    Assignee: Tolo, Inc.
    Inventor: Joseph D. Gerondale
  • Patent number: 4602792
    Abstract: A dual function gasket adapted for insertion into a suitable groove formed in the bell of an associated pipe includes an annular gasket body made of a resilient material. The body terminates radially inwardly in a leading lip and a pressure activated sealing lip spaced rearwardly therefrom. An annular groove is provided in the gasket body and an annular locking ring may be selectively inserted into the groove. The ring is made of a material harder than the gasket body and is inserted into the groove when a high pressure seal is desired. The ring may be removed when only a low pressure seal is desired.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: July 29, 1986
    Assignee: Polymer/Raymond Industries
    Inventor: William C. Andrick
  • Patent number: 4432571
    Abstract: A retainer gland and gland assembly for mechanical joint pipe. The retainer gland has at least one hinge arm extending axially from a side of a flat ring flange portion on the opposite side of the flange ring from a circular rib gland portion. The hinge arm has a transverse hole through its outer end. The gland assembly includes two identical retainer glands encircling a spacer pipe the ends of which are inserted into opposed mechanical joint bells. The flange ring of each retainer gland is bolted to the flange of the respective mechanical joint bell, and the hinge arms of the two glands are pivotally connected by a hinge bolt passing through the transverse holes. The resulting restrained mechanical joint connection not only permits assembly of angularly misaligned pipes, up to the limits allowed by the standard mechanical joint bells, but also accommodates changes in angular alignment after installation, due to settling.
    Type: Grant
    Filed: July 1, 1981
    Date of Patent: February 21, 1984
    Inventor: Samuel H. Davis
  • Patent number: 4342464
    Abstract: A gasket for a socket-spigot connection between a socket end and a spigot end of two pipes to be connected is made of a material stable as to its shape and adapted to carry at its inner radial side at least one resilient sealing ring and at its outer radial side at least one other sealing ring. The gasket has an outer diameter equal to or slightly less than the inner diameter of the socket and an inner diameter equal to or greater than the outer diameter of the spigot. The gasket has a radial inner ring groove and a radial outer ring groove, the radial inner ring groove being constructed and arranged to receive one of the seal rings to provide a pressure seal engagement between the one seal ring and the outer surface of the spigot, the radial outer ring groove being constructed and arranged to receive another of the seal rings to provide a pressure seal engagement between the other seal ring and the inside surface of the socket.
    Type: Grant
    Filed: May 13, 1981
    Date of Patent: August 3, 1982
    Assignee: WOCO Franz-Josef Wolf & Co.
    Inventors: Franz J. Wolf, Hansjorg Lauer
  • Patent number: 4326569
    Abstract: A seal for limiting access of bacteria through a side arm of a stopcock such as that used in apparatus for monitoring pressure in a human blood vessel. The seal has a generally cylindrical body, an open end of which slides over the side arm. A portion of the body seals against the side arm exterior wall. The other end of the seal forms a cap through which a syringe nose may penetrate to establish fluid communication between the syringe and the side arm lumen. The interior of the seal body includes a recess for a Luer lock fitting which may exist on the end of the side arm, and an annular spacer projecting from the inside of the body to provide a surface against which the end of the side arm can abut to prevent the inserted syringe nose from bottoming on the end of the stopcock arm during use. A slit in the capped end of the seal facilitates insertion of the syringe nose. The slit is surrounded by a recess to guide the syringe nose into the slit.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: April 27, 1982
    Assignee: Critikon, Inc.
    Inventor: Vincent L. Vaillancourt
  • Patent number: 4303262
    Abstract: A large diameter pipe joint in which the male end and the female mouth end have respective opposite load bearing surfaces 5, 22 between which are arranged bracing means capable of evenly distributing tensile forces over the whole periphery of the joint by means of an incompressible mass 27 of an initially fluid filler material. The mass is contained in a space sufficiently closed on all sides by an annular component 23 disposed between the two support surfaces 5, 22 to be impermeable to said filler material. This joint is particularly suitable for large diameter pipes laid in trenches, where the axes of adjacent pipe sections lie at a small acute angle to each other after installation.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: December 1, 1981
    Assignee: Pont-A-Mousson S.A.
    Inventors: Michel Pierrel, Jean-Pierre Vitel
  • Patent number: 4209179
    Abstract: The specification discloses a pressure responsive pipe joint seal for sealing connecting pipe joint members. The sealing flanges on the seal define upwardly, outwardly and downwardly curved upper surfaces so that there is less tendency for them to get caught on a pipe joint member as adjacent members are slid into coupling relationship. The seal includes an inflatable bladder whereby the seal can be inflated after it is in its operative position. In one embodiment disclosed, the seal includes a cavity containing a lubricant, the cavity being covered with a rupturable membrane such that when pipe joint members are joined together, the membrane ruptures releasing the lubricant.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: June 24, 1980
    Inventor: Wilbur E. Tolliver
  • Patent number: 4183560
    Abstract: A spigot and socket connection of the type which comprises a pipe end held within a socket by means of a retaining ring includes a device for securing the connection against sliding of the components. This device comprises a sleeve-like securing element lying between the pipe end and the retaining ring. The securing element carries an abutment which is engaged by the retaining ring, and the element is securely clamped to the external surface of the pipe end.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: January 15, 1980
    Assignee: H. Heer & Co.
    Inventor: Walter Wyss
  • Patent number: 4116473
    Abstract: A pipe coupling, e.g. for use in irrigation pipelines, having releasably connectable male and female coupling coupling elements which are connected so as to be able to swing relative to each other about either or both of two axes extending transversely of the coupling elements and perpendicular to each other, whereby the elements are free to undergo universal relative angular movement when attached together. For this purpose one element is encircled by a loosely fitting ring, pivotally connected to that element by lugs at two diametrically opposite positions, and the other element has a pair of hooks, at diametrically opposite positions, which releasably engage sockets on the ring which lie on a diameter of the ring perpendicular to a diameter on which the lugs lie. The lugs may engage a pair of diametrically opposite seats on the one element, or an annular track in which case the couple elements are free to undergo relative rotation as well as relative angular movement.
    Type: Grant
    Filed: November 3, 1976
    Date of Patent: September 26, 1978
    Inventor: Jose Humet Creus
  • Patent number: 4102472
    Abstract: Resilient O-ring seals for caps for closing vehicle fuel tank filler necks, the fuel caps having shank portions extending into the necks. The radial width of the annular space between the inner wall of such a neck and the outer wall of the shank is less than the radial dimension of the O-ring. Each O-ring includes an annular, radially outwardly facing groove defined by an axially inner lip, an axially outer lip, and a connecting web portion. As the shank with the O-ring thereon moves axially into the neck, the axially inner surface of the inner lip contacts the neck and is urged axially outwardly in a wiping action causing bending of the O-ring such that its radially inner surface is resiliently urged radially and compressively to seal the annular space. In one embodiment, the inner surface of the outer lip contacts the neck as the shank and O-ring are projected further into the neck. The outer lip of the O-ring thereby axially compressively seals the space.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: July 25, 1978
    Assignee: Stant Manufacturing Company, Inc.
    Inventor: Paul H. Sloan, Jr.
  • Patent number: 4072245
    Abstract: A resilient O-ring seal for an annular space between a first radially inner surface and a second radially outer surface. The radial width of the annular space is less than the radial dimension of the O-ring. The O-ring includes an annular, radially outwardly facing groove defined by an axially inner lip, an axially outer lip, and a connecting web portion. The inner and outer lips both include axially inner and outer surfaces. The web portion includes a radially inwardly facing surface and a radially outwardly facing surface. As the O-ring is projected axially into the annular space, the axially inner surface of the inner lip contacts the second surface and is urged axially outwardly in a wiping action. The axially outward wiping movement of the inner lip causes a twisting or rolling of the ring such that the web radially inner surface is urged radially outwardly at its axially inner extent and is urged radially inwardly at its axially outer extent against the first surface.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: February 7, 1978
    Assignee: Stant Manufacturing Company, Inc.
    Inventor: Paul H. Sloan, Jr.