Abstract: A method for connecting a sewer pipe to a larger pipe or manhole wherein the connection between the pipe and manhole opening is sealed by means of an elastomeric gasket or boot. A rigid ring is inserted within one end of an elastomeric boot, which has an outer diameter slightly larger than the inner diameter of the opening in the manhole. The boot is inserted into the opening up to the enlarged end, a jacking device is inserted through the gasket, and a circular, stepped plate is connected to the end of the jacking device which has been inserted through the gasket so that it is positioned to engage the end of the gasket assembly having the ring inserted therein. The jacking device includes a spider element which is braced against the outer wall of the manhole, and the device is operated such that the plate is drawn toward the spider thereby pulling the gasket and ring into the opening wherein the gasket is compressed between the opening and the rigid ring so that a compressive water-tight seal is achieved.

Abstract: A sealing ring to be received by an annular groove in one of two pipe elements which can be inserted one into the other, to seal between the pipe elements. The sealing ring comprises two integrated portions of different hardnesses, forming two surfaces enclosing an obtuse angle one of said surfaces being formed by the harder portion and the other one by the softer portion.

Abstract: A method for connecting a sewer pipe to a larger pipe or manhole wherein the connection between the pipe and manhole opening is sealed by means of an elastomeric gasket or boot. In one embodiment of the invention, the pipe is inserted into the manhole opening and an annular elastomeric gasket is positioned over the annular space between the pipe and opening. An extensible jack, which has an annular plunger element having a diameter substantially equal to that of the gasket, is braced against the wall of the manhole opposite the opening and extended so as to press the gasket between the opening and pipe. In an alternative embodiment, a rigid ring is inserted within one end of an elastomeric boot such that the outer diameter of the boot-ring assembly is slightly larger than the inner diameter of the opening. The boot is inserted into the opening up to the enlarged end, the jack is braced against the opposite wall of the manhole and extended thereby pressing the gasket and ring into the opening.

Abstract: An end sealing member joined to the ends of a pipe for cooperation with a complementary end sealing member on another pipe to seal the joint formed when at least two such pipes are joined in end-to-end relationship. Each end sealing member has upstanding members extending into the surface of the pipe to seal the interface between the sealing member and the pipe to which it is secured. The exposed surface of one sealing member is configured to sealingly engage the exposed surface of a complementary sealing member when the one sealing member is telescoped over the other in forming the joint between the two pipes.

Abstract: An improved sealing ring for forming socket-type pipe joints. The ring according to the present invention has an elongate cross-section having a bulbous leading end portion and a trailing end portion having a pair of fins extending towards the respective sealing surfaces.The sealing ring provides a seal which is effective to seal a joint against internal and infiltration pressures.

Abstract: A gasket of rubber or a similar material for sealing joints between the sealing surfaces of two members to be joined, for example pipe sections comprising a spigot and a socket part. The gasket is placed in a fixed position on the sealing surface of one of the members, and for assembly of the members the sealing surfaces of both members are displaced substantially parallel to each other for squeezing the gasket therebetween due to displacement of portions of the gasket relative to other gasket portions. The gasket portions which during the installation of the members are displaced relative to each other define one or more closed very narrow slits extending in the longitudinal direction of the gasket. The width of the slits is so small that the said gasket portions while being displaced during the installation are constantly in contact and slide along each other.

Abstract: An improved seal for closing the space between a pipe and the wall of an opening through which it passes, using a linear extrusion of elastomeric material, of predetermined length to form a gasket. The extrusion has a hollow, pear-shaped head formed integrally with a T-shaped anchoring flange. It is curled into the form of a right cylinder, and its mating ends are vulcanized together. The pear-shaped portion is deflected radially inwardly and the T-shaped anchoring flange outwardly, the latter being then embedded in concrete used to wall the opening for the pipe. The pear-shaped portion is free in space and provides a pneumatic cushion for the pipe.

Abstract: A pipe coupling comprises a flexible insertion socket for inserting thereinto the pipe ends of pipes, particularly those made of mineral materials, that are to be connected together. The insertion socket is in the form of a cylindrical body open at both ends. It has an outside diameter larger than the diameter of either pipe end to be connected by the coupling. There is a packing ring in the form of a resilient, extensible cylindrical member having a central portion and two end portions, the central portion extending over the outer wall of the cylindrical body and the end portions projecting beyond the open ends of the cylindrical body. The packing ring forms an outer casing for the insertion socket.

Abstract: A plastics material pipe coupling socket having a sealing ring locked in position in the socket by a locking ring. The locking ring is of channel section and is snap-fitted to the socket with the socket mouth snugly received in a recess in the channel base. A substantially enclosed annular space is defined between the locking ring and the socket. The sealing ring comprises an annular portion located in said annular space, a neck extending through the entrance to said annular space, and a sealing head.

Abstract: A gasket for resiliently supporting a sewer pipe in a manhole opening, while sealing the opening against fluid flow, which gasket is a molded annulus of elastomeric material having a peripheral flange of substantial width and thickness connected by a radially extending web to an inner concentric rib of greater width than said web, and adapted to be embedded in concrete to its radially inward face, said rib having an integral circular skirt extending inwardly therefrom in a non-radial direction, and united at its rim with a second circular skirt oriented thereto at a reverse angle, said second skirt merging throughout its periphery into an O-ring of slightly smaller diameter than the diameter of the sewer pipe it is adapted to surround.

Abstract: A thin-walled joint face liner ring providing a smooth and continuous face is applied to the bell or to both the bell and the spigot of concrete pipe. The outer end of the ring is formed as a reversely curved flange so that its edge enters and is buried in the concrete. Its inner end extends part way outward along the shoulder of the pipe and thence axially so that its edge also enters and is buried in the concrete. Each ring is applied by placing it on the usual joint face-forming portions of the pipe mold, casting the concrete against the ring and about its edges, and subsequently curing the concrete in place against the ring or rings. When used on the spigot face, it can be made to form the usual gasket groove at such end, and thereby permit use of a more simple mold structure.

Abstract: An Expansion Joint and Seal for Pipe includes an inner or outer seal for such joint, with a suitable sealing means sufficiently flexible to enable expansion of the joint while maintaining desired seal between the two joints.

Abstract: A water seal packing for sealing water at the coupling portion of underwater structures comprising first and second structures; said water seal coupling comprising a first flange, an intermediate body portion, a flexible U-shaped portion and a second flange; each component being formed integrally with each other, said first flange being fixedly secured to said first underwater structure while said second flange being fixedly secured to said second underwater structure.

Abstract: Joint to be used between culvert sections and the like comprising short tubular flexible members made of elastic material to be attached to the ends of adjoining culvert sections and a plurality of strengthening members extending between the ends of these sections. The strengthening members are provided inside and outside of said flexible members and are adjustable to accommodate variations in the gap between the adjoining sections.

Abstract: A fitting for asbestos-cement pipe is welded to the end of one cement-lined iron pipe section and extends axially for receiving the end of a second pipe section. The generally cylindrical fitting includes two steps at which its diameter decreases progressively toward the inner end of the fitting. The steps and decreased-diameter areas are formed by a disclosed spin-forming method which imparts superior strength and stability. In an outer cylindrical area, positioned against the outer step, is an annular bar which, with the inner step, forms an annular recess for receiving an annular elastomeric sealing gasket. When the second, spigot-ended pipe is assembled into the fitting, its outer surface compresses the sealing gasket against the fitting recess to seal the two pipes together positively and to retain the gasket securely against the forces of positive and negative pressures.

Abstract: A Y-shaped sealing ring gasket for use in sealing the coupled ends of pipe lengths is disclosed wherein the sealing ring gasket is secured within a bell end or coupling collar on one end of a pipe and is adapted to be deformed by the spigot end of a pipe received within the bell or collar to form a seal affording increased sealing pressure when the sealing ring is subjected to hydrostatic pressure.

Abstract: A pipe coupling for connecting pipe sections fitted into opposite ends of the coupling which is formed with a plastics sleeve having tongues formed integrally with the sleeve on opposite ends thereof. These tongues fit in openings in plastics clamping rings at opposite ends of the sleeve and engage with sides of the rings to prevent removal of the clamping rings. The clamping rings hold sealing rings of rubber material around the inside of the sleeve for sealing engagement with the pipe sections.

Abstract: An underground joint between sewer pipe and reinforced concrete manhole riser is tightly sealed, and resistant to breakage caused by settling or frost heaving by a tapered, elastomeric, tubular connector boot, capable of flexing and yielding under lateral shift. A smooth faced hole is core drilled in the riser wall. The large end of the boot is expanded radially, by an expandable metal band, to a permanently enlarged diameter and internally clamped within the hole which compresses the material of the boot against the hole surface at 1000 psi, or more. The band is expanded and clamped in a direction normal to the central longitudinal axis of the sleeve by hydraulic jack means. The pipe end is inserted in the boot, up to the inside wall of the manhole, but is yieldable in any direction without leakage or breakage.