Concrete, Clay, Or Masonry Pipe Patents (Class 285/230)
  • Patent number: 10100961
    Abstract: A joint assembly includes a first end portion of a first hollow component, a second end portion of a second hollow component, and a first and second resilient connection member. First end portion interconnects with second end portion. First end portion includes a first and second location feature on an outwardly facing surface and axially distally facing surface respectively. Second end portion includes a third and fourth location feature on an inwardly facing surface and axially distally facing surface respectively. First end portion is slidably received inwardly of second end portion, with first location feature being aligned with third location feature to form a first annular cavity, and second location feature being aligned with fourth location feature to form a second annular cavity. First connection member is receivable within first annular cavity, and second connection member is receivable within second annular cavity, to interlock first component to second component.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: October 16, 2018
    Assignee: ROLLS-ROYCE plc
    Inventor: Christopher Benson
  • Patent number: 9909695
    Abstract: A joint ring system for lined pipes includes a first pipe and a second pipe joined end-to-end, each pipe having an interior lining covering substantially all of an interior wall of the respective pipe. A first ring is disposed within and substantially flush with the joined end of the first pipe, and a second ring is disposed within and substantially flush with the joined end of the second pipe. The first ring is configured to create a first circumferential pressure seal against the interior wall of the first pipe, and the second ring is configured to create a second circumferential pressure seal against the interior wall of the second pipe. At least one of the first ring and the second ring is configured to create a pipe joint pressure seal against the other ring.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: March 6, 2018
    Inventor: Robert P. Raber
  • Publication number: 20150123397
    Abstract: A coupler assembly kit and methods of use are described. Embodiments of the coupler assembly kit can be implemented to couple a corrugated pipe to a concrete section. Generally, the assembly kit can be implemented to couple a spigot end of the corrugated pipe to a bell end of the concrete section. In one embodiment, the coupler assembly kit can include a circumferential cable, a plurality of second cables having a threaded rod on end and an eye bolt on the other end, a plurality of linkage crosses, and a gasket. The coupler assembly kit can be assembled and implemented on location to connect a high-density polyethylene corrugated pipe to a reinforced-concrete flared end section.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventor: Justin J. Yarnell
  • Publication number: 20140367961
    Abstract: Coupler devices, systems, and related methods for coupling ducts are provided. In some aspects, a duct coupling device includes a hollow body, at least one coupler seal disposed about an outer surface of the body, and a plurality of apertures extending through the body for facilitating the passage of a fluid and/or any other medium therethrough. A duct coupling system includes a duct coupling device with a sealing member, coupler transitions adapted to receive the duct coupling device, and a sealing member. The sealing member is configured to seal an annular space disposed between a first surface of the duct coupling device and a surface of one of the first and second ducts. A method of coupling ducts includes providing a first coupler transition on a first duct, providing a second coupler transition on a second duct, and providing a duct coupling device between the first and second coupler transitions.
    Type: Application
    Filed: June 17, 2014
    Publication date: December 18, 2014
    Inventors: John Richard Crigler, Gus Dean Hammonds, Robert William Sward
  • Patent number: 8813336
    Abstract: A waterproof sleeve coupling for use in a partition for preventing liquid from leaking through a penetration in the partition either adjacent to or through the sleeve coupling. The sleeve coupling has a water stop constructed of a resilient material and mounted in sealing contact with a sleeve so that a waterproof seal is formed between the water stop and the sleeve. The sleeve coupling optionally includes an extension coupling and an extension sleeve mounted on the sleeve. When the sleeve coupling is mounted in the partition, the extension sleeve extends beyond the surface of the partition to prevent liquid on the surface of the partition from leaking into the passageway of the sleeve coupling.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: August 26, 2014
    Inventor: Kenneth R. Cornwall
  • Patent number: 8622093
    Abstract: A vibration-resistant reinforced concrete watertight pipe, at opposite ends of which coupling units formed of a separate material are formed, and a method of manufacturing the same are provided. The vibration-resistant reinforced concrete watertight pipe includes a reinforced concrete pipe having a reinforcement mat, which is assembled with longitudinal reinforcements and transverse reinforcements, disposed in a concrete layer, and a convexity coupling part and a concavity coupling part that are coupled to opposite ends of the reinforced concrete pipe and have coupling ridges and coupling furrows respectively. Here, the coupling part and the concavity coupling part are formed of a synthetic resin, which is different in physical properties from the reinforced concrete pipe, and have the same shape and thickness as the reinforced concrete pipe. Each of the convexity coupling part and the concavity coupling part has a metal core installed therein to increase a coupling strength.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: January 7, 2014
    Assignees: Sun-Am R&D Co., Ltd.
    Inventor: Jung Suk Lee
  • Patent number: 7810847
    Abstract: A waterproof sleeve coupling for use in a partition for preventing liquid from leaking through a penetration in the partition either adjacent to or through the sleeve coupling. The sleeve coupling has a flexible water stop mounted in sealing contact with a sleeve so that a waterproof seal is formed between the water stop and the sleeve. The sleeve coupling optionally includes an extension coupling and an extension sleeve mounted on the sleeve. When the sleeve coupling is mounted in the partition, the extension sleeve extends beyond the surface of the partition to prevent liquid on the surface of the partition from leaking into the passageway of the sleeve coupling.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: October 12, 2010
    Inventor: Kenneth R. Cornwall
  • Patent number: 7757718
    Abstract: A polymer composition including a resin and a fiberglass is wrapped around the bell portion of a clay pipe to provide a cushion thereto to resist damage due to impact forces, and holds the bell in compression to thereby increase the tensile strength thereof. The length of the bell can be lengthened using a polyester-based material for an extension, where the extension is also wrapped with the polymer composition.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: July 20, 2010
    Inventor: Mark H. Bruce
  • Patent number: 7695021
    Abstract: A coupler apparatus for use with concrete segments has a first duct, a first coupler member connected to the first duct, a second duct, a second coupler member connected to the second duct, and a gasket member received in a channel of the connector of the first coupler member and extending outwardly therefrom. The gasket member is in compressive contact with an abutment surface of the second coupler member. The gasket member has a generally U-shaped cross-section with a curved end extending outwardly of an opening of the channel of the first coupler member. The abutment surface is a planar flanged surface extending radially transversely outwardly of the end of the second coupler member.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: April 13, 2010
    Inventor: Felix L. Sorkin
  • Patent number: 7690691
    Abstract: A plastic pipe coupler is provided having a plurality of sections connected to one another but with at least one gap between the ends of two sections which are adjacent to one another. Each of the coupler sections has an exterior surface and an interior surface, and is fabricated so that when taken together, the sections cooperatively circumvent a section of plastic pipe. Each bracket is secured to the exterior surface of one of the aforesaid sections of the coupler and has a base plate, a pair of sidewall plates attached to each base plate, and a crosspiece having a first end and a second end, the first end of which is in contacting relationship with one of the pair of sidewall plates, while the second end is in contacting relationship with the other of the pair of sidewall plates.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: April 6, 2010
    Assignee: Advanced Drainage Systems, Inc.
    Inventor: John M. Kurdziel
  • Patent number: 7686347
    Abstract: A coupler apparatus for use with concrete segments has a first duct, a first coupler member having a connector and a flexible boot extending therefrom and having an end extending over a surface of said first duct, a second duct, a second coupler member having a connector and a flexible boot extending therefrom and extending over an exterior surface of the second duct, and a gasket received in the connectors of the first and second coupler members for forming a liquid-tight seal between the first and second ducts. Clamps are affixed over the ends of the flexible boot so as to establish a liquid-tight seal with the respective ducts. The connector includes an annular section affixed to an end of the flexible boot and an annular groove formed around this annular section.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: March 30, 2010
    Inventor: Felix L. Sorkin
  • Patent number: 7641241
    Abstract: A pipe joint, and a method of forming a pipe joint between two metallic pipes which have been internally and/or externally coated with a material to prevent corrosion includes a spigot and a socket. The socket has, or is formed with, an internal circumferential groove (6) that provides a seating for an elastomeric sealing ring (8). An extension or lip (13) forward from the groove provides a welding location (14) remote from the sealing ring. The coating on the end of the socket if necessary is removed to facilitate welding. The spigot has a heat sink member (9) to enable the lip of the socket to be welded to the metal of the spigot.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: January 5, 2010
    Assignee: Tyco Water Pty Limited
    Inventor: Gienek Mieszelewicz
  • Patent number: 7571938
    Abstract: An improved sidewall fitting is disclosed with a fitting body and one or more flanges disposed about the fitting body. Plaster catches disposed along a face of one flange and positioned approximately coextensively with the fitting body. The bodies of the plaster catches may be curvilinear-shaped, straight or concentric rings and the body portions may be of heights for aligned or off-setting configurations. The fitting is installed the plaster catches oriented directly below the body of the fitting, along a generally horizontal plane. Plaster is layered over the flange and plaster catches, and up to the opening in the fitting body. The plaster catches may be disposed along a posterior face of a flange, or simultaneously along the anterior and posterior faces. A second fitting type includes an extension surface for increased bonding with the plaster with additional surface area available for sealing with the plaster.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: August 11, 2009
    Inventors: Bryan Keith Yeager, John Robert Scherler
  • Publication number: 20080169645
    Abstract: A plastic pipe coupler is provided having a plurality of sections connected to one another but with at least one gap between the ends of two sections which are adjacent to one another, at least two brackets, concrete pipe fastening means, and connector elements. Each of the coupler sections has an exterior surface and an interior surface, and is fabricated so that when taken together, the sections cooperatively circumvent a section of plastic pipe, preferably corrugated. Each bracket is secured to the exterior surface of one of the aforesaid sections of the coupler and has a base plate, a pair of sidewall plates attached to each base plate, and a crosspiece having a first end and a second end, the first end of which is in contacting relationship with one of the pair of sidewall plates, while the second end is in contacting relationship with the other of the pair of sidewall plates.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 17, 2008
    Inventor: John M. Kurdziel
  • Patent number: 7392989
    Abstract: A manhole assembly for a manhole having generally cylindrical sidewalls defined between an outside surface and an inside surface separated by a wall thickness and having a wall opening communicating the outside and inside sidewall surfaces of the manhole for insertion of a mating pipe. The wall opening defines a peripheral surface relatively perpendicular to the outside and inside sidewall surfaces which receives a ring shaped elastomeric gasket. The gasket has a retaining ring whose location is precisely determined to allow the gasket to be obliquely inserted within the wall opening of the manhole and to be subsequently snap-fitted into position on the peripheral surface, whereby the gasket is securely retained in a locked-in position with respect to the wall opening in the sidewall of the manhole.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: July 1, 2008
    Assignee: S & B Technical Products, Inc.
    Inventor: Bradford G. Corbett, Jr.
  • Patent number: 7374210
    Abstract: A hydro concrete to pipe sealing arrangement consisting of a main sealing sleeve having a first end and a second end, the main sealing sleeve consisting of two halves which interfit with each other to accommodate dimension variations during forming of a concrete casing wall; a rubber sleeve having a first end and a second end, the rubber sleeve being located on an interior of the main sealing sleeve wherein the rubber sleeve is entirely surrounded by the main sealing sleeve; the rubber sleeve having rings located on an interior surface which face towards the first end of the rubber sleeve, wherein the rings will slant in the same direction as a pipe being inserted, the rings being compressed between the pipe and the rubber sleeve; at least two hydro penetration stopping rings formed on an exterior surface of the main sealing sleeve and extending radially opposite from the rubber sleeve; at least two retainer rings embedded within an interior of the rubber sleeve at the first end and the second end of the rubb
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: May 20, 2008
    Inventor: Jeffery Gene Staskal
  • Publication number: 20080088128
    Abstract: A hydro penetration prevention sleeve is used when building a basement wall wherein said basement wall is subject to leakage from ground water especially pipes that have to be placed through the wall. The pipe, mostly a sewage pipe, has to placed into the wall at a height which is just above the sewage pipe located outside the building or house so that gravity can carry the sewage toward the outside pipe. A main sleeve is placed into a concrete casing that will form the wall just prior to casting the concrete into the casting. The sleeve consists of PVC and is made of two halves that interfit with each other and are glued together to accommodate any preset dimension that matches the preset dimension of the concrete forms prior to casting. The main sleeve has an interior hard rubber sleeve that has rings extending to an interior of the sleeve and the rings are slanted in the direction of the insertion of the pipe to be inserted therein.
    Type: Application
    Filed: October 17, 2006
    Publication date: April 17, 2008
    Inventor: Jeffery Gene Staskal
  • Patent number: 7350827
    Abstract: An expansion ring assembly and method for sealingly installing a gasket within an opening in a wall of a structure. The expansion ring assembly includes an expansion ring having first and second adjacent end portions, and first and second cam members are rotatably coupled to the first and second end portions. Each cam member includes tool engagement structure for rotating the cam members, and cam surfaces of the cam members are engageable with one another such that, upon rotation of each cam member, the cam surface thereof engages the cam surface of the other cam member to drive the first and second end portions of the ring apart from one another, thereby radially expanding the ring to compress a gasket into sealing engagement with the wall opening. Only one cam member may be rotated, or alternatively, both cam members may be rotated sequentially, depending upon the amount of expansion which is needed.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: April 1, 2008
    Assignee: Press-Seal Gasket Corporation
    Inventor: Bryan N Zeigler
  • Patent number: 7334820
    Abstract: The invention relates to a concrete pipe having a corrosion-resistant inner lining consisting of plastic whose one end is made as a pipe spigot end piece and whose other end is made as a pipe socket end piece to receive a pipe spigot end part of the following pipe, with the plastic pipe projecting by an overhang at the pipe spigot end part, with an all-round peripheral groove being arranged at the pipe interior of the plastic pipe to accept an elastomer seal and with the overhang which extends in a straight line and is insertable into the pipe socket end part being so long that it covers the peripheral groove. In accordance with the invention, the inner lining consisting of plastic also lines the pipe socket end part of the concrete pipe.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: February 26, 2008
    Assignee: Gebr. Fasel Betonwerk GmbH
    Inventor: Stefan Fasel
  • Patent number: 7028972
    Abstract: A gasket and mandrel assembly, including a gasket having an annular main body portion with an anchor flange and a pipe sealing portion. The gasket is foldable between a folded position in which the pipe sealing portion is disposed substantially within the main body portion and an unfolded position in which the pipe sealing portion extends outwardly of the main body portion along its longitudinal axis. A pair of mandrels are respectively fitted on opposite sides of the folded gasket to enclose most of the gasket for casting the gasket within a wall in a concrete structure. At least one of the mandrels includes an annular outer surface aligned parallel or substantially parallel with the longitudinal axis of the gasket.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: April 18, 2006
    Assignee: Press-Seal Gasket Corporation
    Inventors: Michael R. Miller, James W. Skinner
  • Patent number: 6899354
    Abstract: An improved joining assembly employs a retainer ring member to hold in place a gasket member in a pipe or fitting. A resilient annular gasket member is placed inside a first conduit member (pipe or fitting). An annular retainer member is provided to secure the annular gasket member inside the first conduit member against longitudinal movement towards the open end of the first conduit member. A second conduit member is received by the assembled components comprising the retainer member, gasket member and first conduit member. The retainer ring member is fixed in place by a suitable adhesive or a suitable welding technique.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: May 31, 2005
    Assignee: Ipex Inc.
    Inventors: Rene Lanteigne, Doug Victor Woolford
  • Patent number: 6874821
    Abstract: A coupler apparatus for use with precast concrete segmental construction having a first duct, a first coupler member extending over and around the first duct, a second duct, a second coupler member extending over and around the second duct and a gasket received at the ends of the first and second coupler members so as to prevent liquid from passing between the coupler members into an interior of either of the ducts. The ducts extend at a non-transverse acute angle with respect to the ends of the coupler members. Heat shrink seals are affixed to the opposite ends of the coupler member so as to secure the coupler members to the ducts in liquid-tight relationship. The ends of the coupler member have generally V-shaped grooves facing each other. The gasket is received in compressive relationship within the V-shaped grooves.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: April 5, 2005
    Inventor: Felix L. Sorkin
  • Patent number: 6866301
    Abstract: The expandable band is used to secure a sealing element within a generally cylindrical structure, such as a pipe or manhole, or other round hole. The expandable band includes a band body having a first band end portion and a second band end portion. A plurality of slots are disposed in the first band end portion, and a locking member extends from the second band end portion. The locking member is an integral element of the second band end portion and includes a tab for extending through the second band end portion and into one of the plurality of slots to lock the expandable band at the desired diameter. The locking member may also include at least one rib or protrusion. When the band is expanded, the tab is disengaged from the slots and slides over the slots, allowing the first and second band end portions to move relative to one another. At the desired diameter, the tab engages one of the slots to lock the band at the desired diameter.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: March 15, 2005
    Assignee: NPC, Inc.
    Inventor: Robert D. Brockway
  • Patent number: 6854770
    Abstract: A pipe formed from a concrete cylinder has an end ring with a ferrule which can be snuggly mounted on one end of the pipe and a skirt axially adjacent to the ferrule for receiving a mail endpiece of another pipe. The ferrule is expanded as it is mounted on the cylinder and exerts a compressive force against the outer peripheral face of the cylinder for forming a secure seal. A rib may be disposed on an inner annular surface of the ferrule and an adhesive may be applied for enhancing the seal between the cylinder and the ferrule.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: February 15, 2005
    Assignee: Bonna Sabla
    Inventor: Charles François Leblanc
  • Patent number: 6834890
    Abstract: A coupler apparatus for use with tendon-receiving duct in a segmental precast concrete structure including a coupler body having an interior passageway for receiving the duct therein. The coupler body has a generally U-shaped channel formed at one end thereof. The coupler element has a connector element formed on interior thereof adjacent one end of the coupler body so as to allow the coupler element to receive a variety of implements for the formation of the precast concrete segment.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: December 28, 2004
    Inventor: Felix L. Sorkin
  • Publication number: 20040174015
    Abstract: A locking ring-type pipe joint has a spigot ring provided on a first pipe section, a bell ring provided on a second pipe section, and a locking ring that may be contracted to engage the spigot ring to the bell ring. First and second circumferential grooves formed in the spigot ring are configured to receive a test gasket and a pipe seal gasket respectively. An annular test space between the gaskets is in closed connection with a pressure port, whereby the pressure seal of the pipe seal gasket may be evaluated after the pipe sections are joined and prior to activating the joint restraint feature, installing the next pipe, and back-filling the pipe sections.
    Type: Application
    Filed: March 3, 2003
    Publication date: September 9, 2004
    Applicant: Price Brothers Company
    Inventor: Richard E. Deremiah
  • Patent number: 6764105
    Abstract: A coupler member for use with precast concrete segmental structures having a first duct, a first coupler member extending over and around an exterior surface of the first duct and having a seat opening adjacent an end of the first duct, a second duct, a second coupler member extending over and around an exterior surface of the second duct and a seat opening adjacent to an end of the second duct, and gasket received in the seats of the first and second coupler members. An external seal is affixed to an opposite end of the first coupler member and affixed to an exterior surface of the first duct. The seats of the first and second coupler members have slots facing one another. The gasket is received within these slots. The gasket has a tapered outer surface suitable for liquid-tight abutment against an inner surface of one of the slots.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: July 20, 2004
    Inventor: Felix L. Sorkin
  • Patent number: 6752435
    Abstract: A coupler member for use with concrete segments having a first duct, a first coupler member extending over and around an exterior surface of the first duct and having an end opening adjacent an end of the first duct, a second duct, a second coupler member extending over and around an exterior surface of the second duct and an end opening adjacent to an end of the second duct, and a gasket received in the ends of the first and second coupler members. The gasket serves to prevent liquid from passing between the ends of the coupler members into an interior of either of the first and second ducts. An external seal is affixed to an opposite end of the first coupler member and affixed to an exterior surface of the first duct. An internal seal is interposed in generally liquid-tight relationship between an interior surface of the second coupler member and an exterior surface of the second duct. The ends of the first and second coupler members are generally V-shaped grooves facing one-another.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: June 22, 2004
    Inventor: Felix L. Sorkin
  • Publication number: 20040056483
    Abstract: A coupler apparatus for use with tendon-receiving duct in a segmental precast concrete structure including a coupler body having an interior passageway for receiving the duct therein. The coupler body has a generally U-shaped channel formed at one end thereof. The coupler element has a connector element formed on interior thereof adjacent one end of the coupler body so as to allow the coupler element to receive a variety of implements for the formation of the precast concrete segment.
    Type: Application
    Filed: August 15, 2003
    Publication date: March 25, 2004
    Inventor: Felix L. Sorkin
  • Patent number: 6641176
    Abstract: The clamping band is used to clamp a connector boot within a hole in a manhole riser or other generally cylindrical structure, particularly where the depth of the hole is greater than the thickness of the manhole riser. The clamping band has a width such that a portion of the band extends beyond the hole surface. The clamping band preferably overhangs both the inner surface and outer surface of the generally cylindrical wall of the manhole riser. In one embodiment, the clamping band is used to affect a pipe-to-manhole connection.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: November 4, 2003
    Assignee: NCP, Inc.
    Inventor: Robert D. Brockway
  • Patent number: 6607219
    Abstract: An annular-shaped, expansion type clamping band has laterally overlapping ends, each having a skewed surface, the skewed surfaces slidably engaging one another. The ends are further provided with elongated guide slots for receiving a threaded bolt. A threaded nut threadly engaging the bolt, when tightened, moves the overlapping ends toward a longitudinal central axis of the band whereby the band expands to exert an outward radial force against an interior surface of a gasket to provide a liquid-tight fit between the gasket and an opening having a surface engaging an outer periphery of the gasket. The band may be a one-piece or two-or-three-piece assembly and may be formed of an suitable metallic or plastic material. The threaded member is slidable along the aforesaid guide slots enabling the bolts to be self-centered. The nut and bolt assembly, in one embodiment is designed to require only one tightening tool.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: August 19, 2003
    Assignee: Poly-Tec Products, Inc.
    Inventors: James Mirales, James A. Westhoff, James A. Kelly
  • Patent number: 6581940
    Abstract: An integrated connection for a manhole having a wall opening defining a peripheral surface and a ring shaped elastomeric body cast in place on the peripheral surface. The elastomeric body includes a foot region cast within the wall thickness of the manhole and connected to a leg region. The leg region terminates in a primary sealing surface. A reinforcing element passes through the ring shaped elastomeric body at one circumferential location which, when viewed in cross section, appears below the peripheral surface of the wall opening once the gasket is cast in place.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: June 24, 2003
    Assignee: S&B Technical Products, Inc.
    Inventor: Claudio Dittel
  • Patent number: 6578882
    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: Grant
    Filed: July 24, 2001
    Date of Patent: June 17, 2003
    Assignee: Hancor, Inc.
    Inventor: Timothy R. Toliver
  • Patent number: 6572118
    Abstract: A sealing member for sealing a joint between a pipe and a wall defining an opening is provided. The sealing member has an annular base, a projection, and preferably first and second annular flanges. The annular base has a bottom and first and second sidewalls. The projection is attached to the base for anchoring the sealing member within the wall. In some embodiments it extends radially outwardly from the base. The first and second annular flanges extend from opposite sidewalls of the base. The first and second flanges each have a top and a bottom surface. The top surfaces of each can have an annular depressed portion, and each of the bottom surfaces can have a plurality of grooves formed therein. Preferably, the base includes at least one cavity extending completely around the circumference of the sealing member.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: June 3, 2003
    Assignee: Advanced Drainage Systems, Inc.
    Inventors: Fouad M. Deeb, Michael R. Miller, John M. Kurdziel, James W. Skinner, Ronald W. Neuhaus
  • Publication number: 20030019163
    Abstract: An integrated connection for a manhole having a wall opening defining a peripheral surface and a ring shaped elastomeric body cast in place on the peripheral surface. The elastomeric body includes a foot region cast within the wall thickness of the manhole and connected to a leg region. The leg region terminates in a primary sealing surface. A reinforcing element passes through the ring shaped elastomeric body at one circumferential location which, when viewed in cross section, appears below the peripheral surface of the wall opening once the gasket is cast in place.
    Type: Application
    Filed: July 30, 2001
    Publication date: January 30, 2003
    Inventor: Claudio Dittel
  • Patent number: 6460860
    Abstract: A tubular wall sealed at a first end by an integrally molded annular wall, forming a cap, is cast in the concrete wall of a low pressure vessel, forming a sealed cavity in the concrete. One end of a rubber tubular gland wrapped sealingly around the outside of the second end of the tubular wall is sealed in the concrete by a radially extending cast-in anchor. The diameter of the other end of the rubber tube is smaller than the diameter of the tubular wall of the cap.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: October 8, 2002
    Inventor: Norman W. Gavin
  • Publication number: 20020140224
    Abstract: The clamping band is used to clamp a connector boot within a hole in a manhole riser or other generally cylindrical structure, particularly where the depth of the hole is greater than the thickness of the manhole riser. The clamping band has a width such that a portion of the band extends beyond the hole surface. The clamping band preferably overhangs both the inner surface and outer surface of the generally cylindrical wall of the manhole riser. In one embodiment, the clamping band is used to affect a pipe-to-manhole connection.
    Type: Application
    Filed: April 3, 2001
    Publication date: October 3, 2002
    Applicant: NPC, Inc.
    Inventor: Robert D. Brockway
  • Patent number: 6457725
    Abstract: A flexible gasket connecting a plastic or fiberglass pipe in fluid communication with a plastic or fiberglass septic tank. The gasket is an integrally molded elastomer having an annular base with a flange and keeper portions extending radially outward from the base forming a continuous groove sealing around the periphery of an opening in the tank. The keeper portion is tapered axially to enable the gasket to be pushed into the tank opening and snap-fitted into position. A web portion extends inwardly from the middle of the base portion and terminates in a toroidal portion to provide a primary sealing function of the gasket, and the toroidal portion provides a secondary sealing. The added pressure produced by the toroidal portion significantly strengthens the total seal while retaining residual resilience to allow relative movement of the tank and pipe.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: October 1, 2002
    Assignee: Hail Mary Rubber Company
    Inventor: William D. Jones
  • Patent number: 6450547
    Abstract: A pipe coupling according to the invention comprises a socket (2) of glass-fiber reinforced plastics material and a membrane (4) of elastic material which is formed at at least one end as a seal and comprises a sleeve section (8). Where the membrane is formed as a seal, it has at the end where the pipe (20) is to be introduced (thus at the outer end), a short cylindrical band (14). In the cylindrical band the membrane has a constant wall thickness, which is backed by the glass-fiber reinforced socket material of the pipe coupling.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: September 17, 2002
    Assignee: C-tech Ltd
    Inventor: Börge Carlström
  • Publication number: 20020101077
    Abstract: The present invention relates to a pipe or the like comprising a concrete cylinder (2) having fitted onto one annular end (3) thereof a coaxial female end ring (4) comprising a skirt (6) defining a female endpiece (54) and a ferrule (5) for fastening to the cylinder (2). The ferrule (5) is in a state of circumferential elastic tension providing sealing relative to the cylinder (2) by applying pressure thereto which is distributed circumferentially in continuous manner. Sealing between the female end ring (4) and the cylinder (2) is thus reinforced.
    Type: Application
    Filed: December 21, 2001
    Publication date: August 1, 2002
    Inventor: Charles Francois Leblanc
  • Patent number: 6237966
    Abstract: A pipe joint is formed using a gasket made of coextruded materials of different durometer hardnesses. The gasket includes a relatively soft, thermoplastic elasomeric sealing portion joined to a harder, plastic substrate on one side of the substrate, usually on the outer circumference of the substrate. The substrate may include stiffening regions axially spaced apart from one another and on opposite axial sides of the softer material. The inner circumference of the gasket (if the softer sealing portion is on the outer circumference) may have annular ridges spaced axially from one another to engage shoulders in one of the pipes of the joint to limit axial displacement of the gasket. The gasket, because of its relatively hard substrate, will not collapse into a groove in the pipe defined by the shoulders, thereby reducing the amount of gasket material required by a typical recess joint.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: May 29, 2001
    Assignee: Bidco Plastic Extrusion, Inc.
    Inventor: Thomas P. Kearns
  • Patent number: 6089618
    Abstract: A sealing device for sealing an annular space between a socket and a spigot end introduced therein comprises a sealing ring (10) and an annular element (12) connected therewith and consisting of a non-elastic cellular plastic, for example styrene cellular plastic. The sealing device is intended to be moulded into the socket at the cylindrical inner surface thereof with the sealing ring (10) positioned adjacent the free end of the socket and the annular cellular plastic element (12) positioned axially inside the sealing ring. The annular element (12) consisting of non-elastic cellular plastic is formed with recesses (22) which are positioned at or in connection with the inner surface of the annular element for allowing a radial expansion of the inner surface of the annular element under the influence of the spigot end introduced into the socket.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: July 18, 2000
    Assignee: Forsheda AB
    Inventors: Wieland Neumann, Lennart Jornhagen
  • Patent number: 6039359
    Abstract: The present invention teaches a concrete pipe joint construction which includes a steel bell and a spigot joint ring, both protected by an alkali releasing substance contained typically in a composite sleeve. When the spigot is engaged sealably into the bell an external joint recess is formed. The present advance is to add a sleeve made of a polyurethane foam material having the alkali releasing substance dispersed therein. The sleeve has an impermeable outer surface and goes around the outside of the joint and is banded sealably to both of the pipes. By this expedient, if and when ground water penetrates into the joint recess, the alkaline material is released from the sleeve to protect exposed steel from corrosion.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: March 21, 2000
    Assignee: Coreflex LLC
    Inventor: Frank P. Valenziano
  • Patent number: 5979908
    Abstract: Apparatus including an elastomeric gasket and a rigid holder therefor for resiliently connecting a sewer pipe in the wall opening of a concrete manhold to prevent leakage through the connection under extreme conditions of ground settling and overhead loading. The base of the gasket is anchored in the opening with its interior surface in flush alignment with diverging surfaces of the wall opening and having an inside diameter substantially corresponding to the outside diameter of the pipe for a press fit. The holder is preassembled with the gasket for casting of a port in a wall in situ.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: November 9, 1999
    Inventor: William D. Jones
  • Patent number: 5971440
    Abstract: A pipe is assembled from sections of a liner pipe formed of a moulded glass reinforced plastics material (GRP). A sleeve, also of moulded GRP, sealingly surrounds the joint between the sections. An outer pipe of polymer concrete is formed in sections on the liner pipe sections to surround the latter together with the sleeve. The sections have a packer provided between adjacent ends, and the joint is offset from the joint between the liner pipe sections. The GRP of the liner pipe can withstand high chemical concentrations in toxic sewage, the sleeve preventing seepage of sewage and being able to withstand chemical attach by any passing through the inner joint. The polymer concrete enables the pipe to withstand jacking forces, and is also resistant to chemical attack from a basically saline surrounding soil.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: October 26, 1999
    Inventor: Peter James Boatman
  • Patent number: 5955162
    Abstract: Cast iron pipe and other elongated hollow articles are lined with a cementitious mortar for certain applications, such as the transmission of potable water or sewage. To improve the resistance to attack from acids and to provide a crack and holiday free cement lining, a calcium alumina cement is used to line the article. A plasticizer such as fireclay is added to the calcium alumina cement prior to its application. The cement lined article is then coated with an asphaltic based coating and then cured in a high humidity environment.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: September 21, 1999
    Assignee: AMSTED Industries Incorporated
    Inventors: C. Gilmer Loving, Steven Farkas
  • Patent number: 5876039
    Abstract: A folded annular gasket is cast into an opening in the wall of a manhole and held in a compressed state by an annular support. The annular support includes a helical strip which can be stripped apart to remove the annular support from within the annular folded gasket. A pipe to be connected to the manhole is inserted into the annular support. After the pipe is inserted in the annular support, the annular support is stripped out from between the folded annular gasket and the pipe. Removal of the annular support causes the folded annular gasket to press against the pipe and thereby form a seal. Removal of the annular support can also cause the folded annular gasket to invert. The inverted part of the annular gasket can be clamped to the pipe and function as a boot or sleeve.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: March 2, 1999
    Assignee: Press-Seal Gasket Corporation
    Inventors: James W. Skinner, Michael R. Miller, Ronald W. Neuhaus, William O. Skinner, deceased
  • Patent number: 5700038
    Abstract: A connector assembly is provided for connecting two pipes of dissimilar material. In particular, an assembly is provided for connecting a first end portion of a first pipe to a second end portion of a second pipe formed as a bell housing having a larger inside diameter than an outside diameter of the first end portion and which second end portion overlaps the first end portion. The connector assembly includes a mandrill for attachment to the first end portion, which is formed as a flange extending radially from an outside circumference of the first end portion to face at least a portion of an end face of the bell housing, and an axial tubular extension extending from the flange so as to, upon assembly, reach a point approximately equal to an axial end point of the first pipe, and reside within the second end portion creating an annular space therebetween.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: December 23, 1997
    Assignee: Gnesys, Inc.
    Inventors: Boyd Greene, Naji Nassif
  • Patent number: 5687997
    Abstract: A sealing gasket and oval concrete pipe combination and method of producing the concrete pipe joint to improve the seal of the concrete pipe joint cooperatively formed between adjacent oval concrete pipes wherein the sealing gasket comprises a retainer element disposed to engage one of the adjacent oval concrete pipes to maintain the position of the sealing gasket relative to the adjacent oval concrete pipes during assembly of adjacent oval concrete pipes, a base member to aid in the alignment of adjacent oval concrete pipes during assembly and cushion adjacent portions of adjacent oval concrete pipes and a sealing element to seal the joint between adjacent oval concrete pipes and wherein each oval concrete pipe comprises a male and female joint member formed on opposite ends thereof to operatively engage the corresponding joint member formed on the next adjacent oval concrete pipe to form the joint therebetween, the male and female joint members including corresponding shaped portions to facilitate alignment
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: November 18, 1997
    Inventor: Roger Beacom
  • Patent number: 5649712
    Abstract: A device for sealing a space between an annular wall defining an opening and a pipe end portion introduced into the opening consists of a sleeve (2) having at one end thereof a flange (4) for restricting the introduction of the sleeve into the opening and having at its other end a flange (6) for restricting the introduction of the pipe end portion into the sleeve.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: July 22, 1997
    Assignee: Forsheda AB
    Inventor: Kenneth Ekholm