Abstract: A high pressure fitting is provided .which comprises an adjustment nut with nipples extending therefrom in axial extension of one another. The nipples are provided with exterior threads and with conically shaped ends which are respectively engaged by ferrules. Each of these ferrules is engaged by a coupling member having an interior thread which is in engagement with the threads provided on the associated nipple. Adjustment of the threads operates to pull the ferrules against the associated nipples. On each nipple is mounted a frusto-conical ramp adjacent which is provided a cylindrical arrangement of spaced fingers or a thin wall cylinder having protruding tips directed radially inwards. These fingers or the cylinder with their respective tips ride up the ramps and are loosely accommodated in their respectively associated nipples to prevent accidental detachment thereof. The fingers pressing against the ramps serve to vector forces to remove play from between the inter-engaged threads.

Abstract: A coupling for attachment to the end portion of a pipe having a circumferential shoulder in such end portion includes a coupling body which receives the end portion of the pipe therein and a set of jaw members which, after the end portion of the pipe is received in the coupling body, move to a closed position to engage the shoulder so that the coupling is locked onto the end of the pipe and the pipe cannot be pulled from the coupling because the jaw members acting against the shoulder prevent such movement. The coupling can be provided with sets of jaw members at each end to couple together two pipes with end portion shoulders or have jaw members at one end and threads, flanges, or other types of connectors at the other end. Valves or other fittings may be incorporated into the coupling between the ends of pipes being coupled.

Abstract: A motor vehicle air conditioning installation includes a pair of parallel tubes with annular beads at their free ends, for assembly to a component of the fluid circuit of the installation, and a clamping plate or strut connecting the two tubes together. The strut is an elongated plate having two through apertures. One of these is a notch open at one end of the plate. Each aperture has a substantially semicircular region matching the circumference of the associated tubular element fitting within it. The second aperture is surrounded by the material of the plate over its whole periphery, and includes a widened region through which the associated bead of the corresponding tubular element can pass, this widened region being joined directly to the substantially semicircular region. The strut cannot be separated from the tubes without resilient deformation of the latter, which avoids the danger of its becoming lost during disassembly.

Abstract: A modular connector (20) for separably joining two modular pressure fluid components (21, 22) such as filters, regulators, lubricators, dryers, drains, manifolds, unions, and the like. The connector (20) utilizes a modular arrangement of a joining block (24) and mounting slides (25) on each pressure fluid component (21, 22), with tracks or guide rails (44) on the block (24) engagable in grooves (48) on the mounting slides (25) to provide a slide fit between the connector (20) and the components (21, 22) with mating wedge or cam elements providing a tight sealing engagement therebetween. The components can be positioned from either side, left or right-handed, of the connector. Adjoining sealing surfaces (26, 28) on the components and connector are clamped tightly together in sealed relation by the wedge or cam members, and O-ring seals (29) are utilized to provide a fluid tight seal between the sealing surfaces.

Abstract: A conduit liner having a continuously cylindrical body having a first opening and diametrically opposed second opening, a flange which extends circumferentially around the first opening and which is integrally formed with the body, a hollow interior to encapsulate at least one wire extending through the conduit, and a plurality of flexible and collapsible fins extend along and protrude from an external surface of the body.

Abstract: 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.

Abstract: A pipe coupling wherein the axial split is offset from the location wherein the coupling is closed. The offset increases the resistance of the pipe coupling to lifting forces exerted by pressurized fluid in pipes or pipelines. In addition, an extension member and a reinforcing member on the opposite sides of the closure device increase the section modulus of the pipe coupling and further increase the resistance of the pipe coupling to lifting forces.

Abstract: A rotatable flange union for use with vacuum systems includes a first flange, a second flange and a connector which connects the first flange to the second flange and allows the first flange to rotate 360 degrees with respect to the second flange. In the preferred embodiment, tubing of the first flange is placed within tubing of the second flange. Additionally, the connector includes a first quad ring seal, a second quad ring seal, and a cavity in the second flange. The first quad ring seal is in contact with an inner diameter of the second flange and is in contact with an outer diameter of the first flange. The second quad ring seal is in contact with the inner diameter of the second flange and is in contact with the outer diameter of the first flange. The cavity is between the first quad ring seal and the second quad ring seal. The cavity is pumped to a pressure of less than ten millitorr.

Abstract: A manually releasable, toggle-type fastener is provided for use, in place of the conventional bolt-and-nut fastener that is normally used to secure together the adjacent, aligned, bolt lugs formed on the ends of curved segments which form a circular pipe coupling. The fastener includes a first pin part fitted into the bolt hole of a first lug, and a second pin part fitted into the bolt hole of the second lug. A lever is pivotally connected to the first pin part for swinging into a locked position adjacent its segment and for swinging into an unlocked position away from its segment. The lever has an end to which a clamp member is releasibly secured. The clamp extends along the lugs and has an end which engages the second lug and which carries the second pin part for securing the lugs together. The fastener may be made in different sizes to fit different size bolt lugs on different size couplings.

Abstract: A release member for a quick-type connector includes an outer sleeve concentrically disposed about an inner sleeve and integrally joined to the inner sleeve at one end. A plurality of circumferentially spaced fingers are formed on the inner sleeve and extend axially from an opposite end of the inner sleeve. Radially outward extending projections are formed on the inner sleeve and engage an inward extending flange on a female connector part to retain the release member in the open end of a bore in the female connector part, with the outer sleeve slidably disposed over the tubular end portion of the female connector part. Engaging surfaces formed between the fingers on the inner sleeve engage deflectable legs on a retainer mounted in the bore of the female connector part when the release member is forcibly urged into the bore in the female connector part to deflect the legs radially outward so as to permit separation of a radially expanded flange on a male conduit from the female connector part.

Abstract: The improved electrofusion joint and header for supplying hot water that perform satisfactorily at elevated temperatures as evidenced by high heat resistance, that exhibit good sealing property and that can be handled efficiently in mounting and various other operations have a crosslinked thermoplastic resin layer and at least one joining portion which comprises a non-crosslinked thermoplastic resin layer that is formed a as an integral part of said crosslinked thermoplastic resin layer in the area where it contacts a tubular member to be joined, and a heating electric wire provided either within or on the outer or inner surface of said non-crosslinked thermoplastic resin layer. Such electrofusion joint and header are applicable to any part of a piping system for supplying hot water and they will withstand use for a prolonged period.

Abstract: A mechanical locking device for use with conventional quick disconnect fl coupling having a release collar on the female component spaced from a flange or nut also on the female component. Upper and lower half shells of the locking device fit between the release collar and flange to prevent inadvertent movement of the release collar. The half shells are assembled by two threaded fasteners which must be unthreaded to remove the device from the fluid coupling.

Abstract: The nozzle swivel joint includes two couplings which are joined together at mutually flat interface surfaces. Each coupling has an axial flow passage, and the two couplings are held together in mutually rotatable position by a manifold with a threaded end; the manifold having inlet and outlet ports respectively aligned to the flow passages in the couplings. The manifold is sealably affixed to one of the couplings, with a gasket forming a seal about the threadable manifold. An O-ring is compressed between the respective flat interface surfaces to provide a limited friction seal for restricting relative rotation between the couplings, while at the same time permitting rotation to occur with a limited amount of force.

Abstract: An integral conduit section of a multiple conduit system includes an outer housing having a straight coupling portion at one end and a belled coupling portion at the other end, a plurality of innerducts disposed in a parallel manner within the outer housing, one or more spacers for parallely positioning said innerducts in the outer housing, and a three-piece innerduct coupler disposed within the belled portion of the outer housing and engaged with the trailing ends of a plurality of innerducts, being linearly interconnectable with like conduit sections. The innerduct coupler includes a guide for facilitating entry of the plurality of innerducts of an adjacent conduit section into a like section; a seal that creates an air and water tight seal between the adjacent innerducts when like sections are interconnected, without the need for cement or sealing lubricants; and a seating component that terminally positions the innerducts in the innerduct coupler upon the interconnection of like integral conduit sections.

Abstract: A containment interlocking union for use with a containment pipe which encloses a carrier pipe. The containment interlocking union is placed in position around a coupling in the carrier pipe. The interlocking union includes a first joint member and a second joint member positioned circumferentially adjacent to each other and coupled to the containment pipe. The first joint member comprises a first coupling portion of a major radius sealably engaging an outer circumferential surface of an end of the double containment pipe, a pair of second coupling portions of a minor radius adjacent the first coupling portion providing a pair of flanges abutting the ends of the carrier pipe coupling providing longitudinal support of the carrier pipe coupling, and a third coupling portion of an intermediate radius adjacent the second coupling portion.

Abstract: A network for distributing a fluid under pressure. The network has a substantially horizontal main pipe situated at an upper level, with horizontal or vertical secondary pipes branching therefrom. The junction between the main pipe and a secondary pipe is provided by a branch clamp having a zone for covering at least one orifice formed in the top half-cylinder of the wall of the main pipe, into which zone there opens out a first end of a branch duct internal to the clamp, the other end of the duct being fitted with a coupling for coupling the clamp to the secondary pipe. The axis of the first end of the branch duct and the axis of the coupling form an angle a which is obtuse when measured between the axes in the flow direction of fluid flowing along the branch duct.

Abstract: The present invention involves a flexible annular member passing through a wall opening. The flexible annular member is positioned about a conduit passing through the wall opening to enable the conduit to pass through the wall at an angle up to and even greater than 30.degree.. Another embodiment of the present invention comprises a flange type riser and base connection involving the location of the entire sealing assembly within a chamber base/riser section.

Abstract: The improved electrofusion joint and header for supplying hot water that perform satisfactorily at elevated temperatures as evidenced by high heat resistance, that exhibit good sealing property and that can be handled efficiently in mounting and various other operations have a crosslinked thermoplastic resin layer and at least one joining portion which comprises a non-crosslinked thermoplastic resin layer that is formed a as an integral part of the crosslinked thermoplastic resin layer in the area where it contacts a tubular member to be joined, and a heating electric wire provided either within or on the outer or inner surface of the non-crosslinked thermoplastic resin layer. Such electrofusion joint and header are applicable to any part of a piping system for supplying hot water and they will withstand use for a prolonged period.

Abstract: The present invention is a unitary pipe coupler having an internally mounted hollow tube stiffener which extends through the coupler. The stiffener serves as a guide over which ends of the pipes slide as the pipes are inserted into the coupler and provides communication within the coupler between the two pipes. As the pipes are inserted into the coupler, each pipe passes consecutively through an opening provided in the coupler, an O-ring, a plurality of rigid backward oriented gripper serrations provided on a gripper, a plurality of backward oriented flexible sealing serrations provided on a front boot seal, until the end of each pipe rests against a flexible boot seal which abuts a hub for mounting the stiffener to the coupler. The gripper serrations prevent the pipes from being pulled or pushed outwardly away from the coupler.

Abstract: A manually releasable, toggle-type fastener is provided for use, in place of the conventional bolt and nut fastener, used to secure together the adjacent bolt lugs formed on the ends of curved segments which form a circular pipe coupling. The fastener includes a pin of a shape and size to fit into the aligned bolt holes of the lugs, in place of a conventional bolt, and a lever pivotally connected to one end of the pin for swinging into a locked position adjacent its segment and into an unlocked position away from its segment. The lever has a hook-like formation on its end to which a wire-like loop is secured. The loop extends around the sides of the pin and the sides of the bolt lugs to be fastened together and has an opposite end engaging both the pin and the adjacent surface of the segment for securing the lugs together and for being restrained from release by the pin itself.