Abstract: A process to install an interlocking union for joining a first double containment pipe having a first carrier pipe within a first containment pipe to a second double containment pipe having a second carrier pipe within a second containment pipe. The process includes slipping a first locking ring into position over the outside diameter of the first carrier pipe to stop against the first containment pipe. A carrier coupling is adhesively bonded to the first carrier pipe stopping against the first locking ring. Thereafter, a second locking ring is slipped into position over the second carrier pipe stopping against the second containment pipe. The carrier coupling is adhesively bonded to the second carrier pipe stopping against the second locking ring. Finally, a containment coupling is bonded to the first containment pipe and to the second containment pipe.

Abstract: A hose coupling comprising a metal tube and a cylindrical insert concentrically arranged and held fast within the tube. The tube includes a radially outwardly flared sleeve integral with the tube and providing a tube end and a stop shoulder at the juncture at which said sleeve is flared outwardly. The insert includes (i) a barrel portion extending substantially the full length of the insert and (ii) a radially outwardly flared integral collar at one end of the barrel portion. The collar has an end face abutting the tube stop shoulder, an opposed hose end face, and a tapered circumferential land engaging the sleeve and extending axially at an outwardly diverging uniform taper from the tube end face to the hose end face. The sleeve is preformed to include a circumferential seat portion for seating the collar with the seat portion diverging outwardly at a uniform taper equal to that of the collar and beginning at the tube stop shoulder and continuing to a point at least equal to the length of said collar.

Abstract: A branched hose construction, hose unit therefor and methods of making the same are provided, the branched hose construction comprising a first tubular hose unit having opposite ends and having a tubular branch extending outwardly therefrom intermediate the opposite ends and having a free end, a second tubular hose unit having a free end telescoped with the free end of the tubular branch, and fastening structure interconnecting the telescoped free ends together, the fastening structure comprising a quick connect/disconnect structure, the second tubular hose unit comprising an end of a flexible hose and part of the quick connect/disconnect structure molded onto the end of the flexible hose and extending outwardly therefrom.

Abstract: A coupling for joining a pair of conduits, one of the conduits having a flared end and the other of the conduits having a circumferential flange with a surface conforming generally for mating with the flared end of the one of the conduits. The coupling comprises a first annular ring positioned about the one of the conduits and having an inner diameter less than an outer diameter of the flared end and a radially inner surface adapted for engaging an outer surface of the flared end. A second annular ring is positioned about the other of the conduits and has an inner diameter less than an outer diameter of the circumferential flange and has a surface adapted for engaging a surface of the flange. A split ring circumscribes the first and second rings and has a radially inner, generally V-shaped groove for simultaneously overlapping both the first and second rings.

Abstract: A corrugated spiral pipe with a joint is formed by the steps of winding a seal material on thread portions of a pipe end of a spiral pipe, fitting a part of a cylindrical joint body to the pipe end so as to cover a portion on which the seal material has been wound, injecting a liquid foamable resin material through an injection hole and letting it foam, and filling a trough portion of the spiral pipe with the foamed resin material so as to make the spiral pipe watertight for coupling purposes. When the spiral pipe with the joint is coupled to another spiral pipe, a waterstop is forced into a trough portion of a pipe end portion of the latter pipe, an elastic seal ring is fitted onto an outer peripheral face of the latter pipe, and the pipe end of the latter pipe is forced into an outward protruded portion of the joint body.

Abstract: A swivelable quick connect assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal is disposed in the bore for providing a fluid tight seal between confronting portions of the conduit and the housing, an annular bushing is disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer is detachably secured to the housing and is cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer having resilient deformable portions which are adapted to snap over the locking wall upon insertion of the conduit into the housing bore.

Abstract: A tubular coupling for metal pipes has a flange, a tubular element inserted in the flange and having one end connectable to a pipeline and another end and a ring-shaped insulating element arranged at the other end of the tubular element between the tubular element and the flange.

Abstract: In a housing (3) of an attachment piece (1), at least one hollow core space (5) for receiving one end of a corrugated tube (2) is available. In this hollow core space (5) between the corrugated tube (2) and the housing (3), a sleeve (4) is disposed into which the end of the corrugated tube (2) is inserted. On this sleeve (4) elastic elements (15, 16) are present which are pressed toward an axis (29) of the attachment piece (1), through an outer ring (23) on the housing (3). At least one of the elastic elements (15, 16) is equipped with one positioning element (20) and a locking element (24), with these elements (20, 24) engaging an aperture (21) in the housing (3). The connection between corrugated tube (2) and housing (3) can only be broken with an auxiliary tool and is therefore protected against unintentional detachment.

Abstract: A fuel tube is attached to a fuel rail by a novel one-piece plastic clip comprising an integral fork for trapping a flange of the fuel tube against withdrawal from the fuel rail hole in which it is received and also comprising integral catches at the sides for catching on notches in the wall of the fuel tube.

Abstract: A swivel joint connecting articulable fluid conducting arm members of a plumbing assembly includes an inlet member matable with a first arm member and having an inlet fluid passage from the arm member to an inlet collar section. An outlet member is provided matable with a second arm member. The outlet member also defines an outlet fluid passage from the respective second arm member to an outlet member collar section. A fluid conducting shaft member is disposed through the inlet and outlet member collar sections so that the collar sections rotate about the longitudinal axis of the shaft. A bearing sleeve is concentric about the shaft so that the collar sections rotate about the bearing sleeve. Resilient sealing rings are disposed about the shaft adjacent the bearing sleeve so as to prevent leakage of fluid from the swivel joint. Upon axially compressing the sealing rings and the bearing sleeve together, the sealing rings radially expand thereby sealing against the collar sections.

Abstract: A tube- or hose connector for the transport of a fluid has at least at one end a ring type nipple 2 with a cross hole 4, which serves to mount the connector at an aggregate for receiving a banjo bolt 12 having a head 13 and a threaded shank 14 as well as two gaskets 10, 11. It has a protecting cap 18 to hold together a premounted unit of ring type nipple 2, banjo bolt 12, and the two gaskets 10 and 11, and has an approximately U-shaped form with a clamp 19, at the one end of which a flank 20 overlaps the head 13 of the banjo bolt 12 and at the other end of which a protecting cover 20 for the threaded shank 15 of the banjo bolt 12 is provided. The protecting cap 18 has an extension 26 supporting itself at the threaded shank 15 of the banjo bolt 12, and the protecting cover 22 is borne pivotably at the clamp 19.

Abstract: A coupling device especially adapted for the joining of polyethylene underground irrigation hoses, having a female portion, a male portion and a lock cap, the female portion having a threaded nipple for insertion into a hose end and several tabbed prongs that snap into holes in the locking cap, the male portion likewise having a threaded nipple for insertion into a second hose end and several lugs that fit into grooves in the lock cap, enabling the male portion to be pulled out of the assembly for a limited distance, for ease of fitting into difficult hose coupling situations. The presence of the lugs prevents rotation of the male portion with respect to the cap until the male portion is pulled out of the assembly far enough that the lugs are pulled past the end of the locking cap.

Abstract: A device for providing access to the interstitial region between an inner pipe and an outer pipe which coaxially define the region. The inner pipe has at least one terminal end extending from the outer pipe to leave a portion of the outer wall of the inner pipe exposed to thereby expose the interstitial region. A boot is provided for defining a chamber with a larger end snugly fitting the outer pipe and a small end snugly fitting on the exposed outer wall of the inner pipe. The boot has an access port communicating with the interior of the chamber to provide access to the interstitial region.

Abstract: A duct device for insulated delivery of temperature controlled air. The device comprises an elongated, tubular member configured as a conduit for delivery of air and having a tubular wall fabricated of non-load-bearing insulative material. This insulated material includes at least one continuous gap formed into the tubular wall and extending along the tubular member. This gap is filled with a rigid binder which bonds to the insulative material and is capable of reinforcing the structural strength of the tubular member. This binder filled gap operates as a strut, which may be positioned longitudinally along the tubular member, or in other patterns such as a helical configuration. Reinforcing structure is also disclosed for the end sections of the tubular member, along with interconnecting structure.

Abstract: A tube coupler has a main tubular socket body connected to a first tube, a main tubular plug body connected to a second tube and removably connected to the main tubular socket body, and a locking mechanism for locking together the main tubular socket body and the main tubular plug body in a state in which the main tubular plug body is inserted in the main tubular socket body. The tube coupler further includes an operating ring threadably engaging the outer peripheral surface of the main tubular socket body, a slide ring mounted on the outer peripheral surface of the main tubular socket body and being moved axially by the operating ring, and a cylindrical holder slidably fitted in the main tubular socket body and engageable with the main tubular plug body. The holder has a groove open radially outward, and the main tubular socket body has axially elongated holes. The slide ring is provided with pins each having a distal end portion extending into the groove through the corresponding elongated hole.

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.