Contech Construction Products Inc.

Contech Engineered Solutions LLC

James William Shade

James C Schluter

William L Zepp

Lyle Eugene Miller

Robert J Higgs

Thomas A Nein

A pipe joint for plastic pipe includes a bell member and a spigot member. The bell member includes a tubular plastic body wall having a metal reinforcement ring. The spigot member, which is insertable into the bell member, includes a tubular plastic body wall having an internal surface and an external surface and a longitudinal axis and metal reinforcement encased within the tubular plastic body wall. A plurality of plastic ribs extend from the external surface of the tubular plastic body wall and form a gasket channel.

Pipe joint and related method

A pipe joint for plastic pipe includes a bell member and a spigot member. The bell member includes a tubular plastic body wall having a radially outer side including a pair of spaced apart circumferentially extending ribs and a metal reinforcement ring located between the ribs. The tubular plastic body wall includes a circumferential plastic ring portion extending between the ribs and radially exterior of the metal reinforcement ring to encase the metal reinforcement ring within the tubular plastic body wall. A radial gap may be provided between the plastic ring portion and the metal reinforcement ring to accommodate differing thermal shrinkage rates as between the two different materials. The spigot member, which is insertable into the bell member, includes a tubular plastic body wall having an internal surface and an external surface and a longitudinal axis and metal reinforcement encased within the tubular plastic body wall. A plurality of plastic ribs extend from the external surface of the tubular plastic body wall and forming a gasket channel.

A pipe coupling for joining adjacent ends of first and second pipe sections. The coupling includes a generally cylindrical sleeve having first and second sides. The sleeve is formed as a sheet which is rolled to form the sleeve, wherein the first side of the sleeve defines a substantially continuous annular corrugation to cooperatively engage an end of a first pipe section. The connection of the pipe coupling to the first pipe section end occurs at a factory. The second side of the sleeve is in the form of a bell and defines a non-corrugated surface which is adapted to slidably receive an end of the second pipe section in the field, to thereby interconnect the adjacent ends of pipe. Gaskets may be provided to further reduce infiltration or exfiltration at the coupling.

Stab joint coupling

A joint for coupling corrugated or ribbed pipe segments, including helical ribbed pipe segments, end-to-end includes a segment of corrugated or ribbed pipe having a plurality of corrugations or ribs spaced axially along the segment's outer surface, a spigot portion at an end of the segment where the corrugations or ribs have been partially removed to form annular bosses, an annular gasket positioned in the spigot portion, and a cylindrical coupling positioned over the spigot portion and gasket. The outer diameter of the coupling is substantially equal to the outer diameter of the corrugations or ribs, and the inner diameter of the coupling is larger than the outer diameter of the bosses such that a gap is formed between the coupling and the spigot portion. The gasket is sized to have a radial thickness slightly larger than the gap such that the gasket forms an air-tight seal between the spigot portion and the coupling when the spigot portion and gasket are inserted into the coupling. The gasket includes annular ribs extending from its outer circumference which are tapered at their leading edge to facilitate insertion of the spigot portion into the coupling, and are barb-shaped to resist separation of the spigot portion from the coupling once the joint is assembled.

Method for making a joint for a corrugated pipe segment

A coupling for interconnecting adjacent ends of spiral corrugated pipe includes a generally cylindrically shaped body having generally tubular ends extending axially outwardly from a circumferential stop. One of the tubular ends defines a substantially continuous spiral or thread which is adapted to threadably connect to one of the adjacent ends of spiral corrugated pipe. The other tubular end of the coupling defines a sleeve which is adapted to slidably receive the other of the adjacent ends of spiral corrugated pipe within the sleeve to thereby interconnect the adjacent ends of pipe. Gaskets may be provided within the coupling to further reduce infiltration or exfiltration at the coupling. In an alternative embodiment, the coupling includes a generally cylindrically shaped body having generally tubular ends which each define a substantially continuous spiral or thread. The tubular ends are adapted to be threadably connected to adjacent ends of corrugated spiral pipe to form an interconnection therebetween.

Coupling for spiral corrugated pipe

Joint for coupling plastic corrugated pipes

A profile gasket adapted for forming a seal in a joint between an annular band and annularly grooved ends of two pipes positioned end-to-end. The profile gasket comprises a sheet of elastomeric material having a bottom surface with at least two integrally molded and laterally spaced ridges running along its length.

Gaskets used in joining corrugated pipe

A telescopic joint in low pressure corrugated plastic pipe. The joint includes a one-piece elastomeric gasket which functions as a seal between the telescoped pipes. The gasket has a sealing portion adapted to be disposed in a groove in one of the pipes and an anchoring portion adapted to be disposed in an adjacent groove. As the pipes are telescoped together the anchoring portion is trapped in the groove and anchors the sealing portion in place as it is compressed due to an interference fit with the pipes as the joint is made.

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Middletown, OH, United States of America

James William Shade