Abstract: A cooperating combination of a metallic gland and a metallic grip ring is for both plastic pipe and metallic pipe used in fluid piping systems, where these pipes are part of assembled restrained sealed bolted joints. The grip ring, in addition to two well spaced major sized teeth, has several spaced minor sized pipe gripping circumferential teeth located between and beyond the major sized teeth. The major sized teeth extend radially inwardly farther than the minor sized teeth within the grip ring. When the installed grip ring is restraining a metallic pipe, only the major size teeth are, in part, penetrating the metallic pipe. When this installed grip ring is restraining a plastic pipe both the major size teeth and the minor size teeth are penetrating the plastic pipe. The major size teeth take a lot of concentrated force, which is created when the fasteners of the bolted joint are tightened.

Abstract: Galvanic isolation between two fluid-conducting members made of dissimilar materials is provided by a coupling pipe that separates the two members (e.g. a pipe and a valve). The coupling pipe includes a tubular section and two flange sections, which mate with the two fluid-conducting members. An insulating liner on the inside diameter of the tubular and flange sections of the coupling device extends the entire length of coupling pipe and is coextensive with flange insulators that separate the coupling pipe from the two fluid-conducting members. The substantial separation distance provided by the coupling pipe with continuous insulation prevents or significantly reduces electrochemical corrosion.

Abstract: The present invention is directed toward a quick release cam locking joint for connecting adjacent ducts for a track switch snow melter. The invention also includes a track duct support bracket for holding track switch snow melter track ducts.

Abstract: A heavy attachment for attaching to an end of a drain hose of a recreational vehicle is disclosed. The attachment being made up of two half cylindrical shaped halves hinged together which can be pinned in a clamping position around the drain hose adjacent its outlet end with an inch or so of said hose projecting thereby providing an anchor for holding the drain hose in place.

Abstract: The coupler consists of an essentially cylindrical outer layer of glass fiber-reinforced plastic and an inner layer consisting of polyurethane. This inner layer has, approximately in the middle between the two coupler ends, a rib which serves as a stop for the ends of the two pipes to be connected to one another. The coupler has, between this rib and one coupler end (a), an approximately conical inner shape which has a diameter which increases in an outward direction, this conical surface also being provided with two sealing beads.

Abstract: A well tube liner system includes rigid, self supporting plastic liners inserted within well tube sections and including end flanges adjacent opposed ends of the tube sections for sealing against each other and against a connecting collar when the tube sections are drawn axially together during assembly of the tube sections. An auxiliary spacer corresponding in general configuration to the flanges is provided for insertion between the flanges of liner sections to maintain the flanges in axially spaced apart and sealed condition to compensate for worn threads while retaining the same liner sections.

Abstract: A quick-connect, clampable fitting for a flexible hose which comprises a flexible main body of plastic material that is moldable or otherwise affixable to the hose. The main body including an integral flange member having an O-ring ribbed sealing face. The main body nests within a separate reinforcing shell of steel which absorbs the stress applied by the make-up clamp. For affixing the main body to the hose in the filed an alternative embodiment of the main body includes a plurality of channels and galleries into which an adherent fluid may be injected. Silicone rubber is a preferred material for the main body and for the adherent fluid which may be vulcanized.

Abstract: A clamp for hoses, pipes and the like which incorporates an open diameter lock for maintaining the clamp at a selected diameter despite shipping and other stresses, and for preventing the clamp from opening-up beyond the "full-open" diameter. The open diameter lock of the present invention will not interfere with further tightening of the clamp, and it serves to give a visual gauge of the nominal open diameter of the clamp.

Abstract: A method and apparatus for coupling pipe, and installing coupled pipe in a trenchless installation, the pipe being adapted for use as a watermain or the like. Lengths of watermain pipe are provided with a bell at each end, and connecting nipples adapted to be received within opposing bells, to effect a fluid-tight seal. As lengths of watermain are urged into a trenchless tunnel, opposing bell-end faces withstand the force being exerted on the pipe sections, so that damage is avoided and a sealed underground pipe installation is economically and quickly effected.

Abstract: A sleeve is configured to fit slidably around a water hose. One end of the sleeve is oriented towards an end coupling, and is configured as a wrench to register with the external surface of the coupling.

Abstract: The invention relates to a flange ring which is divided in two along a plane extending in the axial direction and wherein, in the zone of the two abutment places each flange half has a bolt at one abutment place and a pocket at the other, so that the bolt on one flange half engages positively in the pocket of the other flange half, the flange ring being formed with holes in both flange halves for the passage of the fastening screws. The characterizing feature of the invention is that the flange ring is divided in the center into two identical halves (1a, 1b) and the bolt (8) so engages positively behind the pocket (9) that the flange halves (1a, 1b) are joined together in the bent state, and after being joined together the flange halves (1a, 1b) cannot be separated in the radial direction with the flange ring (1) flat.

Abstract: An elastomer sealing sleeve 32 of C-shaped cross section is disposed in a contractible housing 10 and includes sealing lips 36 which extend towards each other and which, upon the contraction of the housing 10 and the simultaneous upending of the sleeve 32, are brought to bear snugly against the pipe wall 55. The front face 38 of the sleeve 32 is divided up into two oppositely directed conical surfaces 58, 60, which are embraced by a supporting ring 40 of V-shaped cross section. The inner flank 62 of the supporting ring is positioned between the radially inner surface 58 and the clamping ring 20 supported in the throat of the housing 10 and, in so doing, bridges the recesses 26 in the clamping ring 20. The outer flank 63 of the supporting ring supports the sleeve 32 in the area of the radially outer surface 60. This pipe coupling is particularly simple in its construction and is suitable for high operating temperatures and for large temperature changes.

Abstract: A releasable connection made of plastic includes a sleeve-shaped central body having a first end connectable with a tube-shaped part and a second end axially receiving a junction piece having a circumferentially extending clamping rib. A rotatable clamping sleeve encircles the second end of the central body. The central body includes at least two radially deflectable resilient locking tabs with a cam surface on the interior of the clamping sleeve acting to selectively deflect the locking tabs radially inward to engage the junction piece. A first of the tabs is located to engage closely adjacent the clamping rib to prevent axial withdrawal of the junction piece and a second of the tabs is located at a position axially spaced from the first tab to radially position and stabilize the junction piece in the central body.

Abstract: A tube coupling is disclosed which electrically insulates the tube from the coupling. A metallic nut and body interact with a non-metallic coupling to constrict the non-metallic coupling about the tube end providing multiple seals and seats while avoiding metal-to-metal contact between the tube and either the nut or body. Multiple cooperating cam surfaces are provided on the body and non-metallic coupling to achieve a tube coupling stronger than, yet electrically insulated from, the tube.

Abstract: A coupling and method of coupling of a self-aligning self-tightening nature is obtained by providing a nipple with a hose receiving end and a coupling end. An annular hose abutment flange directed outwardly is formed on the nipple remote from the hose receiving end. An annular pressure ramp is formed on the nipple intermediate the hose receiving end and the hose abutment flange. A plurality of grip segments having a hose receiving end and a coupling end are provided with at least one annular node and an inwardly directed alignment flange. A hose is slid over the hose receiving end of the nipple toward the abutment flange, and the grip segments are placed over the hose with the inwardly directed annular alignment flange located between the outward abutment flange and the coupling end of the nipple. The grip segments are tightened on the hose and nipple, thus forcing the grip segments toward the coupling end by squeezing the hose between the ramp and the node.

Abstract: A clamp for joining a pair of elements having generally circular flanges, the clamp including an inner flange engaging portion arranged to provide generally axially extending forces to said flanges for retaining them against one another when substantially radial forces are applied to the inner flange, an outer circumferential strap element and at least one bolt. The clamp also includes a coupler engaging the strap element adapted to provide substantially circumferential tension thereto, whereby substantially radial forces are applied to the inner flange without urging non-circumferential bending of the strap element.

Abstract: A tube coupling comprises first and second coupling components having transversely extending sealing end faces in aligned face-to-face relationship. First and second nut members are arranged to drive the sealing end faces toward each other. An annular anti-twist member is located between the first nut means and the first coupling member for conducting axial forces from the first nut member to the first coupling component. The annular anti-twist member and the second nut member include axially engaged portions for preventing relative rotation therebetween.

Abstract: A removable clamping device is described which uniformly and effectively joins two fluid transmission lines at their normal termination points, using standard adapter flanges and removable seals and generally "C" shaped clamps having narrow slots therein which are designed to just slip over the smallest diameter of the adapter or fluid line and bear against the respective connecting flanges. The two clamps are held together by threaded bolts which are spaced equally about the clamps and which may be tightened or loosened without exerting undesirable rotational torque about the long axis of the fluid line connection, thus avoiding possible breakage and leakage.

Abstract: A socket joint for ductile cast iron pipes is locked by toothed locking ring inserts 15 and a counter-flange 11. At least one elastic lip 19 is inserted between the locking ring and the rear face of a rigid stop ring which encloses the smooth or male end of the pipe 1.

Abstract: In a line connector system an incorrect interconnection of different lines shall be excluded. This is achieved by connecting a female connector (1-3, 1-6) to one line and a male plug (2-3, 2-6) to the other line, the female connector and male plug having a defined total length when connected; the total length may for example exactly correspond to the distance between two holding members (4, 5) of a holder (3) which receives the connected coupling members with the lines connected thereto. The individual female connectors and male plugs, respectively, have a respective different length such that the total length of incorrect coupling members in a connected state deviate from the predetermined length, whereby for example an insertion of the connected coupling members into the holder is impossible.