Corrugated Patents (Class 285/903)
  • Patent number: 6447026
    Abstract: An arrangement involving a screw connection for connecting two pipes. The arrangement has particular application for connecting a fuel filler pipe to a pipe that is connected to a fuel tank of a motor vehicle. At least one O-ring seal with excellent permeation resistance is clamped in between a resilient ring-shaped collar of a first pipe and an inner cone of a second pipe using a screw connection.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: September 10, 2002
    Assignee: Tesma Motoren und Getriebetechnik GmbH
    Inventor: Sandor Palvoelgyi
  • Patent number: 6443497
    Abstract: A device for tightening a spout, attached to a previously installed angled pipe having an outside radius of curvature, in a position relative to a stop member having an opening through which at least a length of the pipe extends, comprising, at least one sleeve, comprises: at least a first leg and a second leg which meet at a juncture which defines an angle substantially corresponding to the angled pipe, wherein the first and second legs have a combined total length, wherein the first leg has a leg length and is substantially rigid along at least a portion of the leg length, has an inside radius of curvature that is approximately equal to or greater than the radius of curvature of the angled pipe, and wherein the sleeve has a slit, along the entire total length of the first and second legs, to allow the sleeve to be pressed onto and at least partially about the angled pipe; and a method for using the same.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: September 3, 2002
    Inventor: David B. Gravison
  • Patent number: 6435567
    Abstract: A coupling structure for a tube having first and second tube members coupled to each other includes a come-out preventing member adapted to be held at an outer periphery of the first tube member and restricted in its movement in a longitudinal direction of the first tube member at a tip end portion on a coupling side of the first tube member, and an engaging member adapted to protrude from an end portion on a coupling side of the second tube member. The come-out preventing member and the engaging member are respectively provided with first engaging portions and second engaging portions to engage the come-out preventing member and the engaging member to each other and to prevent the first and second tube members from being separated.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: August 20, 2002
    Assignee: Totaku Industries, Inc.
    Inventors: Yasuhiro Kikumori, Yoshiyuki Koizumi
  • Patent number: 6431610
    Abstract: A tube assembly for communicating water under pressure from a water supply valve and a water fixture inlet tube assembled at a job site, having an elongate corrugated tube with alternating grooves and ridges and cut to length to extend between a water fixture inlet tube and a water supply valve. The tube receives a pair of nuts in opposing relation, and each nut has an interior thread sized for engaging a respective one of a water fixture inlet tube and a water supply valve. A pair of C-clips, each received in a respective one of the grooves in opposing distal end portions of the tube, define bearing surfaces for the nuts. The distal ends of the tube receive a gasket, which are adapted for sealing between the respective distal end of the tube and the water fixture inlet tube and the water supply valve.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: August 13, 2002
    Assignees: Beijing Bork Metal Hose, Co., Ltd., Iwatani International Corporation, Iwatani International Corporation
    Inventors: Tetsuya Ohirano, Noboru Ogawa, Yusuke Kato
  • Patent number: 6428052
    Abstract: A preassembled fitting including a body, a nut and a collet positioned within the nut. The nut is threaded on the body a predetermined distanced to allow the installer to snap the corrugated tubing into the nut and engage the collet. The nut is then further tightened to seal the body to the corrugated tubing. A tapered surface on the body engages the cut end of the corrugated tubing and flares the cut end of the corrugated tubing. The fitting will make a metal to metal seal by folding the convolutions of the tubing back against itself creating a double flare.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: August 6, 2002
    Assignee: Omega Flex, Inc.
    Inventors: Mark Albino, Edwin E. Pike
  • Publication number: 20020096883
    Abstract: A coupling for a corrugated conduit has a housing moulded of a rigid plastics material with two spring catches on opposite sides to engage between corrugations on the conduit. A continuous layer of a softer, elastomeric material is moulded on top of the rigid material extending on both the outside and inside of the housing. On the inside, the softer material extends on a tapering surface to seal with the end of the conduit. On the outside, the layer of softer material forms both a flange on an annular ledge to seal with a cooperating coupling and manual gripping regions.
    Type: Application
    Filed: January 23, 2002
    Publication date: July 25, 2002
    Inventor: Fatollah Youssefifar
  • Publication number: 20020093198
    Abstract: A hose coupling assembly wherein a hose 20 having a corrugated portion 22 is coupled to a fitting block 24 by a socket 50. The fitting block 24 has a block engagement catch 25c projecting from the outside rim of the block body 25. The socket 50 comprises a socket body 51 elastically expandable and contractible by being divided by a slit 51a, and a socket engagement catch 51b engages the block engagement catch 25c. To detach the socket 50 from the fitting block 24, force is applied in a rotation direction to a push operation portion 51c to cause the socket body 51 to undergo diametrical expansion, releasing the socket engagement catch 51b from the block engagement catch 25c.
    Type: Application
    Filed: December 20, 2001
    Publication date: July 18, 2002
    Inventors: Koji Ito, Naomi Nakashima, Kenichi Mitsui, Hiroshi Yamaguchi, Yoshiaki Kameda
  • Publication number: 20020083991
    Abstract: A tendon-receiving duct having a tubular body with an interior passageway and a plurality of corrugations extending radially outwardly of the tubular body. Each of the plurality of corrugations has an interior opening to the interior passageway. The tubular body has longitudinal channels formed on the tubular body so as to establish fluid communication between adjacent pairs of the corrugations. The tubular body is formed of a polymeric material. The channels are formed on the outer wall of the tubular body and open to the interior passageway of the tubular body and extend for the length of the tubular body.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventor: Felix L. Sorkin
  • Publication number: 20020079702
    Abstract: A flexible conduit element that is made out of an annular corrugated tube or an annular corrugated pipe and is provided with a connection device. The connection device 6 is located on one end of the flexible conduit element and includes a joining piece 2 that has an external threading 5 and is placed on the end of the flexible conduit element 1. A union nut 3 can be shoved onto the flexible conduit element 1 and screwed onto the outer threading 5 of the joining piece 2, and a clamping ring 4 that can be shoved onto the flexible conduit element 1, is arranged between and deformed by the joining piece 2 and the union nut 3.
    Type: Application
    Filed: January 18, 2001
    Publication date: June 27, 2002
    Applicant: Witzenmann GmbH Metallschlauch-Fabrik Pforzheim
    Inventors: Roland Baumann, Peter Schuttler, Franz Dorge, Bernd Michelfelder, Bernd Seeger, Manfred Mader
  • Patent number: 6409226
    Abstract: Thick-walled steel pipe is corrugated for the purpose of managing axial load when the pipe is used in an earth-restrained application. For example, the pipe may be used as casing in a cyclic steam stimulation well, where the axial loads are induced as the casing is heated and cooled.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: June 25, 2002
    Assignee: Noetic Engineering Inc.
    Inventors: Maurice William Slack, Trent Michael Victor Kaiser, Gerald Adrien Joseph Beaulac
  • Patent number: 6409223
    Abstract: A corrugated hose (2) has a holder (1) to releasably fix the corrugated hose (2) in an angled or curved position in relation to a lengthwise projection of the inner tube, whereby the holder (1) fits snugly into at least one recess or corrugation valley (4) of the corrugated hose (2). The holder has two legs (5, 6), and the legs (5, 6) can snugly fit the corrugated hose (2) which curves between the two legs (5, 6) in a position ready for use. At least one of the snug fits is made with a cut-out (8) open at the side in which the corrugated tube (2) can be inserted from the side under elastic deformation (FIG. 1).
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: June 25, 2002
    Assignee: Anton Hummel Verwaltungs GmbH
    Inventor: Mario Bartholomä
  • Patent number: 6398270
    Abstract: A corrugated pipe joint for coupling corrugated pipes includes at least two joint components, each of which includes a joint main body made of a synthetic resin and including an arc-shaped portion and tightening projecting edges which are outwardly projected from circumferential end portions of said arc-shaped portion in a radial direction of the corrugated pipes to be coupled, and a watertightness-implementing packing made of an elastic material and assembled with the joint main body, the watertightness-implementing packing including an arc-shaped portion and flange edges projecting outwardly from circumferential end portions of the arc-shaped portion in the radial direction.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: June 4, 2002
    Assignee: Totaku Industries, Inc.
    Inventors: Kouki Fukui, Hiroyuki Amatsutsu, Yasuhiro Kikumori
  • Publication number: 20020060454
    Abstract: A pipe structure includes an annular corrugation centered on an axis. The corrugation has a cylindrical liner centered on the axis, two annular sidewalls extending radially outward from axially opposite ends of the liner, and an annular crown extending axially between radially outer ends of the sidewalls. An annular cavity is centered on the axis and is bounded by the liner, the sidewalls and the crown. A structural filler is contained within the cavity.
    Type: Application
    Filed: July 24, 2001
    Publication date: May 23, 2002
    Inventor: Timothy R. Toliver
  • Patent number: 6378914
    Abstract: A hose end fitting that comprises an annularly corrugated imperforate metal tube, a fitting member fixed to an end of the tube, and, first and second resiliently compressible sealing members. The metal tube has axially spaced apart outer corrugation peaks and axially spaced apart inner valleys, each valley interposed between two of the peaks. Adjacent peaks and valleys are connected together by radially extending tube walls. The fitting member comprises a fitting body defining a through opening, a seal seat surrounding and extending outwardly from the through opening, and a tube compressing extension projecting from the fitting body.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: April 30, 2002
    Assignee: Properties Management, Ltd.
    Inventor: Cosimo Quaranta
  • Publication number: 20020043806
    Abstract: A connection for spirally corrugated piping sections of metal for material sold by length with a continuous cross section. The connection is produced without a separate sleeve in that the ends of two piping sections to be joined with each other are brought into a smooth cylindrical form, and one of the two ends is enlarged in relation to the other cylindrical end. The ends are fitted into each other, and mutual fixation takes place through a glue connection.
    Type: Application
    Filed: August 2, 2001
    Publication date: April 18, 2002
    Applicant: Witzenmann GmbH
    Inventors: Dirk Neumaier, Rudiger Rieth, Norbert Thuringer, Axel Muller
  • Patent number: 6371154
    Abstract: A fitting for conduit comprising a body and an acceptor. The body has a wall and a throughbore. The acceptor is disposed along the wall and is capable of providing a sealing interface between the throughbore and the conduit. In one embodiment, the acceptor of the fitting receives a portion of at least one wall of a conduit, and a sealing interface is provided between the throughbore of the body of the fitting and a flow passage of the conduit to form a containment system. In another embodiment, the throughbore is capable of allowing a primary conduit and a flow passage of a secondary conduit to communicate therethrough. According to this embodiment, the acceptor receives a portion of a wall of the secondary conduit and a sealing interface is provide between the throughbore and the flow passage of the secondary conduit to form a secondary containment system.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: April 16, 2002
    Assignee: Fisces by OPW, Inc.
    Inventors: James E. Kesterman, Eugene E. Schneider
  • Patent number: 6367849
    Abstract: A joint (and method) connects synthetic resin corrugated pipes, each of the corrugated pipes including a pipe wall having sectionally rectangular wall portions and sectionally circular wall portions disposed alternately in a longitudinal direction of the corrugated pipe. The sectionally circular wall portions each include an annular-shaped protrusion projecting outwardly from the sectionally circular wall portions disposed substantially at a center of the sectionally circular wall portion between adjacent sectionally rectangular wall portions in the longitudinal direction.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: April 9, 2002
    Assignee: Totaku Industries, Inc.
    Inventors: Yoshiaki Tatsuta, Kazuya Yamashita, Takeshi Mochiduki, Kentaro Takenaka
  • Patent number: 6367802
    Abstract: A locking annular gasket, for providing a seal between a tubular member and a smooth annular section, includes an annular gasket portion and a locking member. The annular gasket portion seals a gap between the smooth annular section and the tubular member. The locking member is secured to the gasket portion for holding the gasket portion in place while the tubular member and the smooth annular section are assembled.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: April 9, 2002
    Assignee: Malcolm Mann Inc.
    Inventor: Mark A. Knapp
  • Patent number: 6364373
    Abstract: A corrugated pipe adapter for providing a sealing surface on a corrugated pipe includes a generally cylindrical sleeve having a generally smooth outer clamping surface and at least one protrusion. The protrusions include side walls and an arched structure between the side walls. The protrusions extend from an inside of the generally cylindrical sleeve. The side walls move outwardly against the corrugations on the corrugated pipe when pressure is applied to the generally smooth outer clamping surface.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: April 2, 2002
    Assignee: NPC, Inc.
    Inventor: Robert D. Brockway
  • Patent number: 6349980
    Abstract: The connecting element (1) is equipped in the region of a connecting portion (5) with a seal (7) which is fixedly connected with the housing (3) of the connecting element (1). Staying elements (9) protect the seal (7) against undue pressing forces. Between the housing (3) and one end of a corrugated pipe (2) a seal (12) is also disposed, which is nondetachably connected with the inner shell (14) of the housing (3) of the connecting element (1).
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: February 26, 2002
    Assignee: PMA AG
    Inventors: Ernst Schwarz, Ralf Kleeb
  • Patent number: 6343623
    Abstract: A sealing ring for sealing the connection of a spigot of a corrugated pipe with a pipe socket has inner beads and lip seals bearing against flanges. Said sealing ring further has an outwardly projecting sealing bead having a central annular bead and two annular collars projecting laterally outward. When said pipe socket is pushed onto said spigot, said sealing bead is rolled in in such a manner that said central annular bead and one annular collar bear against said inside wall of said socket in a sealing-tight fashion.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: February 5, 2002
    Inventor: Ralph Peter Hegler
  • Patent number: 6340181
    Abstract: A bellmouth with a joint including a cylindrical-shaped portion having a first opening disposed at its one end so as to spread in a trumpet-like shape, a second opening disposed at the other end of the cylindrical-shaped portion, an inclined cylinder which is formed adjacent to the second opening which is larger in diameter on a deep side than on an end face thereof, a securing stepped portion formed on a rear surface of the inclined cylinder, and a plurality of projecting portions respectively provided at a rear portion of the inclined cylinder.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: January 22, 2002
    Assignee: Totaku Industries, Inc.
    Inventor: Hiroyuki Amatsutsu
  • Patent number: 6338507
    Abstract: A synthetic resin pipe with a joint, includes a first pipe end portion to be connected, having an open guide cylinder, a large-diameter cylindrical portion formed in a deep portion thereof continuous with the open guide cylinder and having a diameter larger than front and rear walls extending in an axial direction of the synthetic resin pipe, and an outwardly facing projection disposed in a portion of the large-diameter cylindrical portion. A separately produced engaging ring including an inclined guide surface, having a large inside diameter on a width-direction one end face side thereof and having a small inside diameter on a deep side thereof, the engaging ring further including a securing stepped portion formed on the deep side thereof, a plurality of cut-out portions, respectively formed by cutting out the inclined surface, and a projection projecting from a portion of the outer peripheral surface of the engaging ring.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: January 15, 2002
    Assignee: Totaku Industries, Inc.
    Inventor: Hiroyuki Amatsutsu
  • Patent number: 6312021
    Abstract: An end-slotted flexible metal hose includes a hose section with body and end sections and a hose clamp. The hose section forms a bore therethrough having a relatively constant diameter. The end section includes a plurality of slots which extend through a sidewall of the hose section to the bore and permit the end section to be constricted by the hose clamp to reduce the bore diameter to provide a relatively tight engagement with a tube on which the hose assembly is mounted.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: November 6, 2001
    Assignee: Tru-Flex Metal Hose Corp.
    Inventor: R. Winfield Thomas
  • Patent number: 6276728
    Abstract: A fitting for use with corrugated tubing. The fitting includes a first body having a first internal conduit therethrough and a first centerline. The first body has a plurality of fingers integral with the first body. The fingers are positioned radially about a periphery of the first body and each of the fingers is separated from an adjacent finger by a space. A second body which mates with the first body has a second internal conduit therethrough and a second centerline. The second body has a finger deflection surface for contacting the fingers and directing the fingers towards the first centerline.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: August 21, 2001
    Assignee: Omega Flex, Inc.
    Inventor: Steven A. Treichel
  • Publication number: 20010013673
    Abstract: A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.
    Type: Application
    Filed: January 19, 2001
    Publication date: August 16, 2001
    Inventors: Roger Lee Siferd, Matthew C. Ankrom, Larry E. Porter
  • Patent number: 6260584
    Abstract: A metal hose comprises a metal tube having an annularly corrugated wall, a fitting body, an extension that projects from the fitting body, and a sealing member. The fitting body defines a sealing seat for the sealing member. The extension projects from the body about the tube and defines a corrugation positioner distal the fitting body. The extension is deformed to shift the corrugation positioner toward engagement with the tube and resiliently compress the tube corrugations between the positioner and the sealing member. The resiliently compressed corrugations urge the sealing member against the seat for sealing the juncture of the fitting and the tube. In one embodiment a reinforcing shroud surrounds the tube and extends into the fitting. The fitting secures the shroud in place. The corrugation positioner compresses the tube corrugations through the shroud so the shroud is clamped and secured in place by the positioner at a location spaced axially from its end within the fitting.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: July 17, 2001
    Assignee: 40 Properties Management, Ltd.
    Inventor: Sam J. Foti
  • Patent number: 6254145
    Abstract: The connecting component or the connecting fitting (1) comprises at least one locking element which can be shifted-in and shifted-out radially to the longitudinal axis (14) of the fitting (1). The locking element is, for example, connected as a wing (7) via a hinge (22) with the fitting (1) or forms an additional element. On the inside face (10) of the locking element (7) are disposed a multiplicity of locking splice-clips (12) which are resilient. When a pipe end is slid into the fitting (1) with the locking elements (7) closed, these locking splice-clips (12) can be deflected. When load is applied against the insertion direction they become clawed in the pipe jacket. This embodiment permits the shifting-in or dosing of the locking elements (7) in a preassembly step and yet ensures a secure connection. The release of the connection through the radial shifting-out of the locking elements (7) is possible at any time.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: July 3, 2001
    Assignee: PMA AG
    Inventors: Ernst Schwarz, Ralf Kleeb
  • Patent number: 6237969
    Abstract: There is disclosed a spirally corrugated pipe-connecting connector which enables a pipe to be quite easily fixed rapidly to a handhole or the like, and maintains a sealed condition between the inside and outside of the pipe, and enables an electric cable or the like to be passed through the pipe immediately after the pipe connecting operation is completed. The connector includes a tubular connector body 1 including a distal end-side tubular portion 11 for fixing to a wall W, an outwardly-flaring, tapering portion 12 holding a packing member, and a spiral projection portion 13 which is fitted on the holder, and is threaded inversely to a spiral on a pipe P at a pitch smaller than a pitch of the spiral on the pipe P, the tubular portion, the tapering portion and the spiral projection portion being arranged sequentially in this order from the wall W toward the exterior of the wall.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: May 29, 2001
    Assignee: Totaku Industries, Inc.
    Inventor: Hiroyuki Amatsutsu
  • Patent number: 6227578
    Abstract: A corrugated resin elbow comprises a corrugate-shaped synthetic resin pipe wall which includes a plurality of valley portions, a plurality of ridge portions and side surfaces respectively interposed between the valley portions and the ridge portions. At least one of the valley portions and the side surfaces which is disposed on the bend small diameter side of the substantially middle portion of the pipe wall in the longitudinal direction thereof is contractingly heated and deformed to thereby work the corrugate-shaped pipe wall into a bent attitude having a given angle.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: May 8, 2001
    Assignee: Totaku Industries, Inc.
    Inventors: Kouki Fukui, Isao Kurimoto
  • Patent number: 6226937
    Abstract: A footing connector has a first hollow leg and a second hollow leg integral therewith. The interiors of the two hollow legs are in fluid communication. The two legs cooperate to form, preferably, a T-shaped connector. The first leg has threading thereon, and, preferably, the second leg has threading thereon and protruberances therein, to enable connection to other elements of a drainage system. The second hollow leg may have end caps integral therewith at the ends thereof. The connector is used in a drainage network to drain water away from the outside of a building and to evacuate unwanted gasses from the inside of a building.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: May 8, 2001
    Inventor: Douglas C. Carlton
  • Patent number: 6209929
    Abstract: A connector for mounting a pipe member (P) having a spiral-shaped wall to a through hole (h) formed in a wall member (W), the connector comprises a bellmouth (1), a holder (2) and a waterproof packing member (3). The bellmouth (1) includes an engaging projection (13) which is formed on the outer periphery (12) of a cylindrical-shaped portion (11) thereof and is engageable with the inner peripheral surface of the pipe member (P). The holder (2) includes a spiral-shaped projection (23) which is formed on the inner peripheral surface (22) of a cylindrical-shaped portion (21) thereof and fittingly engageable with the outer periphery spiral-shaped portion of the pipe member (P). The waterproof packing member (3) is disposed between the wall member (W) and the holder (2).
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: April 3, 2001
    Assignee: Totaku Industries, Inc.
    Inventors: Hiroshi Ikegami, Yasuhiro Kikumori, Noboru Someda, Yoshiaki Tatsuta, Toshifumi Fujiwara, Toshio Morimatsu
  • Patent number: 6199918
    Abstract: The invention relates to a plug-in rapid-action coupling device (10) for corrugated tubes (12) which have recesses (22) provided at unit spacings on the outer circumference, having a coupling body (14) with an opening (16) which passes through symmetrically and has an axis (20), having a plug-in region (18), within which the corrugated tube (12) can be arranged, and having at least one elastically deformable latching unit (30) which is provided, in the plug-in region (18), on the wall of the coupling body (14), which is arranged so as to be inclined in the direction toward the axis (20), and which, in the plugged-in state of the corrugated tube (12), latches into a recess (22) which is provided correspondingly on the corrugated tube (12), with the result that the corrugated tube (12) is secured against being drawn out, and said plug-in rapid-action coupling device (10) is distinguished in that, in the plug-in region (18), at least two slits (36), which are spaced apart essentially parallel to one another, are
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: March 13, 2001
    Inventor: Adam Gerich
  • Patent number: 6199920
    Abstract: A connecting piece into which is axially insertable in an insertion direction a profiled pipe member having parallel external grooves, where the connecting piece includes a connecting sleeve having an entry end for receiving the profiled pipe member and defines a cylindrical wall with plurality of apertures extending radially therethrough, and a clamping ring which is axially displaceable in the connecting sleeve and which is provided with a plurality of pressure fingers extending approximately parallel to a longitudinal axis of the sleeve and which are pivotable about a pivot region. In a fixing position each of the pressure fingers is positioned generally adjacent a respective one of the apertures, each pressure finger having a projecting nose part which is engagable into one of the external grooves of the profiled pipe member.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: March 13, 2001
    Assignee: Interflex S.A.
    Inventor: Paul Neustadtl
  • Patent number: 6199592
    Abstract: A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: March 13, 2001
    Assignee: Hancor, Inc.
    Inventors: Roger Lee Siferd, Matthew C. Ankrom, Larry E. Porter
  • Patent number: 6173995
    Abstract: A self-flaring fitting assembly for semi-flexible, convoluted tubes or pipes is provided. The inventive fitting assembly, which basically comprises an adaptor, a nut, and a split bushing assembly, eliminates the need for sealing gaskets, is reusable, and further facilitates the ease and speed of installation of semi-flexible piping systems. When used with jacketed tubing, the present inventive fitting assembly is capable of both preventing the undesirable movement of the jacket during installation and assembly and of reducing or eliminating exposure of the tubing located within the fitting assembly to contaminants or corrosive materials found in the surrounding environment.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: January 16, 2001
    Assignee: Titeflex Corporation
    Inventor: Andrew E. Mau
  • Patent number: 6126209
    Abstract: An in-line bell pipe is provided, formed by joining at least two corrugated sections of pipe having a male portion and a female portion to connect the corrugated sections. Each corrugated section has a plurality of first corrugations having a crest and a valley, with the distance between the crest and valley of the first corrugations being a first distance. The male portion of each corrugated section has at least one second corrugation and one third corrugation, with each second corrugation and each third corrugation having a respective crest and valley and with the distance between the respective crests and valleys being a second distance and a third distance respectively. The second distance and the third distance each are less than the first distance. The crest of the third corrugation also has a recessed area that accommodates a sealing element, with the sealing element being retained the recessed area and the female portion.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: October 3, 2000
    Assignee: Advanced Drainage Systems, Inc
    Inventor: James B. Goddard
  • Patent number: 6102445
    Abstract: A coupling system for corrugated, flexible metal hoses includes fitting and washer assemblies. The fitting assembly comprises inner and outer fittings, the inner fitting being received on the hose and having a bore adapted to receive the washer assembly. The washer assembly includes an O-ring, a backer washer and an expandable washer. The O-ring forms a seal connection with the flexible metal hose and the fitting assembly. The expandable washer provides a stop against which the backer ring is pushed by the O-ring. The expandable washer is also clamped between the fitting assembly and a corrugation of the flexible hose to resist withdrawal of the latter. Modified embodiment hose coupling systems are also disclosed and include inner and outer gaskets, compression gaskets, termination plates mounting the outer fitting and different combinations of retainer rings, backer rings and gasket rings.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: August 15, 2000
    Assignee: Tru-Flex Metal Hose Corporation
    Inventor: R. Winfield Thomas
  • Patent number: 6099046
    Abstract: A connector for a metal ribbed pipe comprises a ribbed pipe, an adapter having a protrusion and connecting with a fluid receiving apparatus, a plurality of inserts having a recess contacting to the protrusion and having a collar opposite to the recess, a sleeve fitted on the collar, and a nut for assembling the sleeve with the adapter. Due to the close contact between the protrusion and the recess, the connecting end of the ribbed pipe flares in to achieve a tight seal.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: August 8, 2000
    Assignee: Seung-Il OH
    Inventor: Seung-Il Oh
  • Patent number: 6092274
    Abstract: A metal hose comprises a metal tube having an annularly corrugated wall, a fitting body, an extension that projects from the fitting body, and a sealing member. The fitting body defines a sealing seat for the sealing member. The extension projects from the body about the tube and defines a corrugation positioner distal the fitting body. The extension is deformed to shift the corrugation positioner toward engagement with the tube and resiliently compress the tube corrugations between the positioner and the sealing member. The resiliently compressed corrugations urge the sealing member against the seat for sealing the juncture of the fitting and the tube. In one embodiment a reinforcing shroud surrounds the tube and extends into the fitting. The fitting secures the shroud in place. The corrugation positioner compresses the tube corrugations through the shroud so the shroud is clamped and secured in place by the positioner at a location spaced axially from its end within the fitting.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: July 25, 2000
    Assignee: 40 Properties Management, LTD
    Inventor: Sam J. Foti
  • Patent number: 6085394
    Abstract: A coupler and a method for securing foam tube insulation elements to one another for pipes, comprising of a strip having a top surface and a bottom surface. The top surface may have a series of tab-like projections that define openings between the top surface and the bottom surface. The top surface may also have a series of teeth.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: July 11, 2000
    Assignee: Industrial Thermo Polymers Limited
    Inventor: Steven David Hartman
  • Patent number: 6082741
    Abstract: A resilient gasket is disclosed for providing a seal between corrugated pipes having a plurality of concentric ribs on their outer surfaces, such as drain and sewer pipes to be buried in soil. The gasket comprises a base which is received around a first pipe over top of a rib adjacent an end of the first pipe, with an inner surface adapted to mate with a radially outer surface of the rib, and with legs adapted to extend along forward and rearwardly-sloped faces of the rib. The outer surface of the base is provided with sealing elements to engage the inner surface of the bell adjacent the end of a second pipe. The gasket also has a flap extending outwardly and forwardly from the forwardly extending leg. The flap and the forward leg form a V-shaped member. The flap engages the inner surface of the bell when the first pipe is inserted into the second pipe, and the gasket is rotated rearwardly relative to the rib.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: July 4, 2000
    Assignee: Ipex Inc.
    Inventors: Bernard Gregoire, Pardeep K. Sharma
  • Patent number: 6079749
    Abstract: A preassembled fitting including a body, a nut and a collet positioned within the nut. The nut is threaded on the body a predetermined distanced to allow the installer to snap the corrugated tubing into the nut and engage the collet. The nut is then further tightened to seal the body to the corrugated tubing. A tapered surface on the body engages the cut end of the corrugated tubing and flares the cut end of the corrugated tubing. The fitting will make a metal to metal seal by folding the convolutions of the tubing back against itself creating a double flare.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: June 27, 2000
    Inventors: Mark Albino, Edwin E. Pike
  • Patent number: 6044591
    Abstract: A drain and inspection manhole for liquid conduits, in particular waste water and/or storm water drains, comprises a manhole section which is formed as a composite pipe having a smooth cylindrical internal pipe and a corrugated external pipe. The external pipe is deformed to comprise at least one connecting base with a marginal web. Apertures that are flush with each other are cut into the connecting base and the internal pipe, a connector being inserted in these apertures.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: April 4, 2000
    Inventor: Ralph Peter Hegler
  • Patent number: 6036237
    Abstract: A coupling for connecting a distal end of a corrugated tube with a fitting having a forward coupling end. The coupling includes a collet receivable coaxially over the distal end of the tube and including a circumferential wall portion which extends axially from a forward first end to a rearward second end. The second end is configured as having an outer portion and an inner portion of a diameter smaller than the outer periphery of the tube. The inner portion is configured to be receivable within the root portions of the tube for retaining the collet thereon, and presents a generally rearwardly-facing compression surface. The wall portion is longitudinally dissected through the second end thereof into at least a pair of arcuate, cantilevered segments.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: March 14, 2000
    Assignee: Parker-Hannifin Corporation
    Inventor: Michael A. Sweeney
  • Patent number: 6019399
    Abstract: A fluid coupling for connecting a corrugated tube to a fitting. The coupling includes an annular compression member having an opening therethrough which extends from a forward end portion receivable coaxially over the tube to a rearward end portion threadably engagable with the fitting to urge the tube into a fluid-tight engagement therewith. The forward end portion of the opening has a rearward first end, a forward second end defining the inner diametric extent of the opening, and an inner radial surface extending therebetween from a rearward gland portion to a forward camming portion. An annular locking member is journalled within the gland to be received therewith over the tube.
    Type: Grant
    Filed: December 13, 1997
    Date of Patent: February 1, 2000
    Assignee: Parker-Hannifin Corporation
    Inventor: Michael A. Sweeney
  • Patent number: 6007110
    Abstract: A tubular portion 1 of a bell mouth has on its outer peripheral surface one or a plurality of first projections 21 projecting radially and one or a plurality of second projections 22 projecting at a position phased differently from the first projection 21 in an axial direction and in a circumferential direction, each of the projections 21 and 22 being formed such that its surface on a bell-shaped opening portion 3 side is formed as a sharply angled surface 2a, while its surface on a tubular opening portion 4 side is formed as a gently inclined surface 2b, an axial phase interval w between the first projection 21 and the second projection 22 is set to satisfy the relationship: w.ltoreq.W with respect to an axial width W of an inner surface portion of a small-diameter portion 32 in the annularly corrugated pipe P, a circumferential phase angle r being substantially equal to a value calculated by dividing a half angle of circumference (180 degrees) by the first projections 21.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: December 28, 1999
    Assignee: Totaku Industries, Inc.
    Inventor: Hiroyuki Amatsutsu
  • Patent number: 5984375
    Abstract: A hose coupling assembly utilizes first and second hose collar halves interacting with a barbed connector for mounting to a PVC spiral hose with screws. The collar halves are identical and may be molded from flexible plastic material for ease of attachment to the spiral hose.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: November 16, 1999
    Assignee: Schlumberger Industries, Inc.
    Inventor: Stanley Leo Merrett
  • Patent number: 5971438
    Abstract: A sewage removal system 10 is provided for quickly, securely and sanitarily connecting the onboard holding tank H of a typical recreational vehicle or travel trailer to an in-ground stationary waste disposal site S. The system 10 includes two hoses 20, 21 which may be coupled via a union 50 to provide hoses 20, 21 of greater combined length to reach the site S when located too far for a single hose 20, 21. The hoses 20, 21 include quick connect couplings 30 secured to each end 22. Locking hooks 40 extend from the annular rims 39 of the couplings 30 to provide a means for securely engaging protrusions 56, 66 to create a sealed joint. The system 10 includes two elbow adapters 60 to allow simple connection to an inlet tube T of the stationary waste disposal site S. The first elbow adapter 60 includes a male threaded connector 70 for coupling with a female threaded fitting F of the inlet tube T.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: October 26, 1999
    Inventor: Albert P. Johnson
  • Patent number: 5961157
    Abstract: A device and a method for making a device for forming a leak-proof connection between a rigid tube end and the tip of a flexible pipe by crimping a metal sleeve portion onto the tip. The rigid tube end includes an end portion comprising a shoulder with a larger diameter than the tube. The device comprises a rigid insert having a cylindrical bore between both ends thereof and including on one side a tubular portion force-fitted into the tip of the pipe opposite the crimped part of the metal sleeve portion, and on the other side a portion provided with an outer flange having a matching shape and engaging the internal portion of the shoulder.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: October 5, 1999
    Assignee: Manuli Auto France
    Inventors: Daniel Baron, Michel Brachet