Abstract: The present invention is a connector to be provided on way of a blood restoring circuit of a plasmapheresis bag set, comprising a male connecting member and a female connecting member.Each of the members is provided with a key ring of a structure in laminated layer, and the key rings are formed, at ends with a convex or a groove for having combination of the both members.The connecting members are provided with positioning means therefor, and positionings of the convex or the groove of the key rings are adjusted per each of the connectors.

Abstract: A drier comprising a pressure cylinder formed by two cylinder parts. One cylinder part has inlet and outlet flow fittings on it, for connection of the cylinder in the refrigerant circuit. The two cylinder parts further have passages in them for the flow of the refrigerant, and desiccant modules mounted in the passages to remove water from the refrigerant. The two cylinder parts are made of molded plastic and are round and cup shaped. The annular open sides of the two parts are attached together by a lug-in-groove twist lock connection. Further, the annular open sides have a scarf joint formed thereon, and the parts are bonded together at the joint to form a strong integral construction. A sight glass is provided at one end of the cylinder and a blow-out plug may be provided at the opposite end.

Abstract: A coupling device between a hose and the radiator of a motor vehicle has a nipple on the radiator with a circumferentially complete rib at its front end. The front flank of the rib is conical and the rear flank of the rib extends radially of the nipple and is adjacent a groove with three equidistant axially parallel ramps one of which is in line with a bridge extending forwardly of the conical flank. The end of the hose is attached to a coupling element with three equidistant prongs each having a radially inwardly extending claw at its front end. The claws slide along the conical flank of the rib when the front end of the coupling element is inserted into the front end of the nipple, and the claws ultimately enter into and are held in the groove. Each claw has two mutually inclined cam faces, the same as the bridge.

Abstract: A conduit system for the flow of a fluid medium therethrough wherein the system is made up of a plurality of elongated conduit segments connected by means of fittings, such as straight connectors, elbows, T's or the like. The conduit segments are composed of opaque material and the fittings are composed of transparent material.

Abstract: A conduit harness connector assembly comprising: an elastomeric female member having a body portion with first and second opposite sides and at least one integrally formed flexible, stretchable tube extending from one side thereof and bore extending through the tube and through to the second side of the body, each tube having a predetermined internal diameter; a first set of conduits wherein a separate conduit of the set extends into each of the flexible tubes, each of the conduits having an outer diameter greater than the inside diameter of the tubes, which are stretched over them to provide an elastomeric fit; a comparatively rigid male member having first and second opposite sides wherein a tube extends from one side thereof for each bore in the body portion of the female member and for insertion thereinto from the second side of the body portion and means for separately connecting a second set of individual conduits in fluid communication with each of the tubes thereof.

Abstract: A joint, and method for constructing the joint, are provided for connecting sections of multi-cell conduit in an end-to-end manner to produce long runs of conduit for carrying fiber-optic cables or the like, wherein the joints produced will isolate, in a substantially airtight manner, each of the individual cells from the adjoining cells.

Abstract: A bypass connection for flexible tubes, obtained by molding a coating of a junction material about a rigid tubular insert, and a process for manufacturing the connections. In these bypass connections, the insert includes at one end a first bell mouthed flange intended to be applied against the internal surface of a boss, provided with a flange which is also bell mouthed, of a main pipe, in combination with a second flange and the insert is formed by the secondary core for supporting a member to be connected to the main pipe, so that it forms an integral part of the bypass connection.

Abstract: The end portion of a hose is bonded to the front section of a tubular connector whose rear section surrounds the end portion of the hose and has two integral pallets whose teeth engage a circumferentially extending external rib of a nipple which receives the front section of the connector with the interposition of an annular sealing device. The rib has axially parallel passages which register with the teeth of the pallets during insertion of the front section of the connector into or during extraction of the front section of the connector from the nipple.

Abstract: A recoverable polymeric material is coated with discrete regions of a sealant, such as a mastic, and of a heat-activatable adhesive, such as a hot-melt adhesive. The coated material forms a sleeve which may be of tubular or wrap-around configuration. The sleeve may be used to cover weld joints in polyethylene coated steel pipes. The sealant ensures a flexible water-proof seal around the weld and the adhesive provides a second seal and prevents any long range movement between the sleeve and the pipe.

Abstract: A floor drain includes a cylindrical drain body having external threads formed thereabout and an upper flange extending radially outwardly from the drain body and disposed flush with the floor surface. A threaded nut is secured about the drain body to engage the lower surface of the floor. The drain body includes a lower bore portion adapted to receive the upper end of a waste discharge pipe, the pipe being secured therein by adhesive or the like. A plurality of shoulder stops extend inwardly from the upper end of the lower bore portion to limit the upward position of the waste discharge pipe. The upper end surface of the waste discharge pipe is substantially exposed by the shoulder stops, so that a bead of sealant may be disposed at the junction of the upper end surface and the lower bore to seal the assembly.

Abstract: A T-shaped hose includes a vulcanized main hose having a wall with an opening therein and a vulcanized branch hose having one end disposed adjacent to the opening in the main hose, so that the hoses are approximately in the form of a "T". A hollow generally cylindrical branch sleeve having a generally outwardly directed flange at its lower end and an annular recess formed in the outer wall of the sleeve adjacent to the flange, is disposed primarily within the branch hose with the flange engaging the inner wall of the main hose and defining therebetween an annular channel. A fixation member composed of a vulcanizable rubber is received with the recess and channel.

Abstract: Pipe couplings are formed by consolidation of a polymer into braided fibre reinforcement by recovery of a heat-recoverable driver thereover. A liner, e.g. of non-cross-linked polyvinylidene fluoride, may be used, preferably with three layers of polymer/braid, to achieve a Freon-tight seal for coupling loosely swaged or butt-jointed refrigerator pipes. Braids carrying a consolidatable polymer which allows the braid crossover points to slip freely during recovery of the driver are preferred for optimum performance.

Abstract: A plastic Tee fitting formed by a main conduit body and an internally threaded adapter connected to the body at a right angle. The adapter is arranged end to end with a hollow neck which projects from the wall of the main body around a circular opening in the wall. The joint between the neck and adapter is strenghtened by an insert which is fitted in and glued to the neck and adapter on the inside and by a spout which is sleeved around and glued to the neck and adapter on the outside.

Abstract: A double walled insulated container for storing low boiling liquified gases includes inner and outer containers with insulation therebetween. A tubular neck connects the openings of both containers. The joints between the neck tube and the respective containers is designed as conical seated joints whereby the container openings are shrink fitted onto the neck tube with adhesive applied to the conical surface.

Abstract: A T-fitting for use with pipes of different diameter sizes includes a generally T-shaped hollow body defining a central flow transition passageway, and three spaced-apart pipe-connecting hollow ends formed on the body in flow communication with its central flow transition passageway. A pair of the pipe-connecting ends share a common axis and are disposed in opposing relation on the body. Each of the pair of pipe-connecting ends has a pair of tandemly-arranged outer and inner pipe-receiving sections defining respective outer and inner passageways in flow communication with the central passageway. The outer passageway is larger in diameter than the inner passageway, and the respective outer and inner sections have outer and inner shoulders with respective outwardly-facing internal surfaces adapted to abut with ends of pipes of different size diameters when received in the respective passageways.

Abstract: A mechanical pipe joint is disclosed in which a pin formed on the end of one pipe section is inserted in a socket formed in the end of another pipe section. The tapered section on the pin has a taper angle less than the taper angle of the tapered section on the socket. When the pin is inserted to the desired depth, an annular cavity will be formed between the tapered section in which sealant is trapped to form an annular seal for the joint.

Abstract: A pipe connection in which pipe ends are provided with lips or flarings within the area of the joint edges and which includes a clamping ring having a U-shaped profile at the inner surface which is adapted to be tightened radially inwardly; the inner end faces of the clamping ring and/or the end faces of the lips or flarings are inclined toward the pipe axis so that the joining edges are urged toward one another in the tightened condition of the clamping ring; at least the radially outermost ring-shaped part of the clamping ring is provided with at least one plastically deformable, lug-shaped ear which is adapted to be tightened by contraction thereof and thereby establishes a permanent connection which can be reopened only by destruction of the clamping ring.

Abstract: A pipe connection in which pipe ends are provided with lips or flarings within the area of the joint edges and which includes a clamping ring having a U-shaped profile at the inner surface which is adapted to be tightened radially inwardly; the inner end faces of the clamping ring and/or the end faces of the lips or flarings are inclined toward the pipe axis so that the joining edges are urged toward one another in the tightened condition of the clamping ring; at least the radially outermost ring-shaped part of the clamping ring is provided with at least one plastically deformable, lug-shaped ear which is adapted to be tightened by contraction thereof and thereby establishes a permanent connection which can be reopened only by destruction of the clamping ring.

Abstract: A coupling for joining the open ends of unthreaded pipe sections is disclosed which includes a first coupling member adapted to be fitted over and adhered to the open end of one of the pipe sections and a second coupling member having a portion thereof fitted over and adhered to the open end of the other pipe section and a portion thereof adapted to be fitted on and adhered to the first coupling member. The first coupling member is designed so that the end thereof can be brought into abutting relationship with the open end of the pipe section containing the other coupling member while maintaining the longitudinal axis of both of the pipe sections parallel to each other at all times.

Abstract: A connecting arrangement comprising a threaded sleeve of synthetic plastic material and a tube portion having a pipe thread. The threaded sleeve contains an insert nut with an internal thread and a synthetic plastic ring which is engaged by the pipe thread of the tube portion. The tube portion has at its forward end a supplemental sealing ring which sealingly engages a sealing region of the synthetic plastic ring. The sealing region is spaced from the axial ends of the threaded sleeve and has an inner diameter which is smaller than the outer diameter of the sealing ring. A further seal may be provided by disposing an adhesive sealing mass in an annular groove on the tube portion such that the mass adheres the tube portion to the sleeve when they are connected.

Abstract: The invention relates to a T-shaped hose composed of three branches made of rubber or similar material with a fabric lining. The three branches are arranged in the form of a "T", but are spaced apart from one another so as to define an uninterrupted, circumferentially-extending gap therebetween. The gap is then closed by a separate rubber compound. A non-adhering T-shaped tubular support made of rigid and thermally stable material is arranged in the interior of the hose within the T-zone, while the exterior T-zone of the hose is covered by a rubber layer.

Abstract: Sewer pipes and connector means therefor whereby they can be connected during pipe jacking or moling, the connector means including a sleeve element and a resilient sealing ring located in a groove in a spigot portion of the sewer pipe, means also being provided to prevent the complete disengagement of the end of a sewer pipe from the sleeve.

Abstract: A pipe coupling is disclosed for coupling together complimentary flexible hoses. The pipe coupling includes a first tubular member having a first and a second end, the first end of the first member defining a first bore and a first counterbore. A second tubular member has a first and a second end and the first end of the second member defines a second bore and a second counterbore. The second counterbore is of the same diameter as the first counterbore and is aligned with the first counterbore when the first and the second members are coupled together. A tubular insert includes a first and a second end and the insert extends between the first and the second bores such that the external surface of the insert engages the first and the second bores with the first end of the insert being disposed adjacent the first bore and the second end of the insert being disposed adjacent the second bore. An annular seal is disposed in an annular space defined by the first and the second counterbores and the insert.

Abstract: A coupling apparatus and method is disclosed for coupling a first and a second hose to enable the flow of fluid therethrough upon the application of fluid pressure comprising a first coupling member having a first internal bore connected to the first hose. A second coupling member having a second internal bore is connected to the second hose. A first and second major thread is disposed on the first and second coupling member, respectively. The first coupling member is insertable into the second coupling member with the first major thread threadably engaging the second major thread. The first and second coupling member being constructed of a resilient and deformable material for enabling radial expansion of the first and second coupling member upon the application of the fluid pressure.

Abstract: A pipe connection of a first and a second fibre reinforced plastic pipe by accommodating a free end portion of each pipe in a centering plastic pipe part, an adhesive layer being present between the inner side of the centering pipe part and the outer side of the free end portions. A reinforcing layer extends over the centering pipe part and over parts of the first and second pipe part adjoining the free ends of the centering pipe part, preferably the centering pipe part has a smaller wall thickness than the wall thickness of the first and second pipe parts.The free end portions have a smaller wall thickness than the wall thickness of the centering pipe part.The centering pipe part may be formed as a bend, or part of a saddle or branch saddle and consists of a reinforced thermosetting plastic material.The bend may be formed from a plurality of standard bend parts of relatively small length, e.g. 5.degree. or 10.degree.

Abstract: A coupled hose assembly of the type including a coupling attached to a polymeric hose by pinching part of a hose end portion. A pliable adhesive is disposed in part of the coupling to define a substantially leakproof seal between the hose and coupling at an environment temperature falling at least within the range of about 135.degree. C. to about -40.degree. C.

Abstract: The present invention relates to improvements made to heat insulating means for piping subjected to high thermal, hydrostatic and mechanical stresses.The new insulating means comprises a plurality of sectors or layers made from a lacunal insulating material enclosing air, which sectors or layers are bonded together by sheets or layers of elastomer, and having undergone curing at a temperature less than or equal to 120.degree. C.

Abstract: A grooved contracting connector is comprised of a resilient sheet member in the form of a coil having a plurality of circumferential grooves in the resilient sheet member coil. In one embodiment, an adhesive is applied to the inner surface of the resilient sheet member coil at least in the area between the grooves. Resilient sheet member coil is expanded to a larger diameter and held in the expanded condition by the heat sensitive bonding material. In connecting together tubular members, the tubular members are inserted, the connector is heated with the heat sensitive adhesive bonding material at least partially melting to allow the connector to contract firmly onto the tubing to form a tight and strong connection upon cooling.

Abstract: A bypass connection for flexible tubes, obtained by molding a coating of a junction material about a rigid tubular insert, and a process for manufacturing the connections. In these bypass connections, the insert includes at one end a first bell mouthed flange intended to be applied against the internal surface of a boss, provided with a flange which is also bell mouthed, of a main pipe, in combination with a second flange and the insert is formed by the secondary core for supporting a member to be connected to the main pipe, so that it forms an integral part of the bypass connection.

Abstract: A waveguide joint with flanges bonded to a waveguide section. Each flange is divided into two pieces with internal knurling and corner projections to bite into the external waveguide corners. The flange pieces are pressed on while the bonding adhesive is cured.

Abstract: An improved coupling (10) to be embedded in concrete (101) is described. The coupling includes multiple concentric rings (11c) on an outside wall (11a) of a tube (11) which aid in preventing leakage along the outside wall and which help in providing fire retardancy. The coupling includes a step form (14) having a regular diameter which aids in positioning the coupling using a template (105).

Abstract: A tubular body is provided having first and second ends and the first end includes structure for connection with one end of a tubular duct while the second end of the body defines a peripherally extending and outwardly opening groove. A pair of semi-annular sheetmetal sections have their inner peripheral portions edgewise engaged and seated within the groove at the first end of the tubular body and the semi-annular sections are of slightly greater than 180.degree. in angular extent and have their opposite ends overlapped and joined together. The semi-annular sections, after being joined together, define an annular collar mounted on the first end of the tubular body against removal therefrom and the side of the annular collar facing outwardly of the first end of the tubular body has an annular resilient gasket mounted thereon whose outer side includes an adhesive coating for adhesive securement to a duct wall about an opening formed in that duct wall.

Abstract: Plastic plumbing joint assemblies of a universal nature are made available by this invention to provide with a single coupling unit construction a variety of different functions including clean-out access, pipe end dust covers or vents, drain assemblies, threaded pipe to plastic couplings, flush floor or wall mount, snap-in friction fit or permanent solvent welded installation, etc. The integral plastic plumbing coupling joint unit has an internally threaded barrel assembly and outside smooth cylindrical surface mating inside a plastic pipe. If flush fit thereon, a thin rim circumferential flange fits on a floor surface with a flush removable center closure plug for flush mount on a wall. A lower skirt below the threaded barrel presenting a smooth cylindrical inner surface can receive a plastic pipe internally. A thin cover plate or drain plate can be held on by one screw for flush floor mount.

Abstract: A liquid dispenser including a hollow plastic adapter defining a cavity extending between axially aligned open ends thereof, the cavity having a uniform cylindrical portion terminating at one of the open ends and a tapered portion joined to the cylindrical portion and tapering inwardly toward and terminating at the other open end; and a hollow metal hub defining a passage extending between axially aligned open ends thereof, the hub having a first cylindrical outer surface portion with a given diameter slightly greater than the uniform cylindrical portion and press fit therein, a second cylindrical outer surface portion with a predetermined diameter less than the given diameter and projecting out of the other open end of the adapter, and a tapered outer surface portion joining the first and second cylindrical surface portions and engaging the tapered portion of the adapter.

Abstract: A pipe coupling holder (10) for holding a pipe coupling joint (20) to be embedded in concrete (42) includes a cylindrically-shaped barrel member (12) having an inner wall to which the coupling joint (20) is attached at a first end thereof. The holder also includes a flange member (14), which is separate from the barrel member, but which has a hole (28) therethrough of the size for snugly receiving a fixed-shaped outer wall of the barrel member (12) to be selectively slidable along the barrel member and attachable thereto at any selected position. Thus, a second end portion (26) of the barrel member can be cut away to accommodate a raised portion (40) of a concrete form wall and the flange member (14) can be slid along the outer surface of the barrel member to the top of the raised portion.

Abstract: A pair of pipe members are joined together in a flange connection assembly particularly suited for fiber-reinforced plastic components, the pipe members being formed to include an inner pipe jacked consisting essentially of a thermoplastic material and an outer pipe jacket consisting essentially of a fiber winding impregnated with a snythetic resin. A threaded section is formed in each of the outer pipe jackets at the end of each of the pipe members, a flange bushing is provided with a loose flange ring threadedly engaged on each of the threaded sections and a covering collar covering at least the end of each of the pipe members is inserted at the inner pipe jacket.

Abstract: A ring for the leak-proof and traction-resistant joining of the ends of two pipes which surround one another at a radial distance, made of a basic body of soft-elastic, resilient material having cylindrical contact surfaces engaging the pipes, and of a cone ring of unyielding material embedded therein, which is defined radially inwardly and outwardly by cone surfaces, in which cone ring the cone surfaces are inclined in the same direction and are at a distance from the surface of the oppositely-lying or confronting pipe which diminishes increasingly with increasing distance from its end.

Abstract: A pair of pipe members, each including an inner pipe jacket consisting essentially of a thermoplastic material and an outer pipe jacket consisting essentially of a fiber winding impregnated synthetic resin, are joined together at their ends in a connector assembly which includes a pair of semi-circular shells engaged externally about the outer pipe jackets at each end of the pipe members, a pair of clamping rings in press-fitted engagement about the shells for pressing the shells against the pipe members and a pipe stub arranged internally of the pipe members in cooperative relationship with the inner pipe jackets to form a fluid-tight seal therebetween.

Abstract: A plastic pipe fitting includes a mounting section to be secured to a main pipe and a stem and a collar for receiving an end of a branch pipe. Flexible arms extend partially around the main pipe diverging from the outside surface of that pipe. The fitting is bonded to the main pipe by plastic plumbing solvent. Projections at the ends of the fitting's arms facilitate clamping tightly against the main pipe and receive connectors of a special clamping tool. The pipe includes a first connector, and an elastic member connected to the first connector and extending to a lever. The lever ends in a second connector and has a handle for pivoting the lever. Pivoting the lever with the two connectors in place flexes the arms inward and forces all contacting surfaces of the fitting and pipe into extremely high pressure contact for bonding. Once fitting and main pipe are bonded, the clamping tool is removed, a hole saw directed through the stem opens a hole into the main pipe.

Abstract: A coupling, a reinforced hose and coupling assembly and a method of making such an assembly is disclosed. The coupling includes an internal recess which in the assembly is filled with elastomeric material to provide a fluid tight seal between the hose and the coupling.

Abstract: A polymer socket is secured to a metallic conduit by snapping a split polymer sleeve around the conduit with a flange on the sleeve engaged within a groove in the conduit, and then securing the sleeve against spreading. The securing function is provided by an annular insert bonded within the sleeve. A throughbore within the sleeve provides the socket.

Abstract: A conduit coupling assembly for connecting the end portions of two lengths of conduit in coaxial, abutting relationship. The coupling assembly includes an abutment ring, an outer coupling, retainer means and resilient means. The ring has an internal thread sized for threading onto the end portion of one of the lengths of conduit. The coupling has a first end and a second end with a bore extending therebetween sized to slidably, rotatably receive the abutment ring. The coupling first end has an inside dimension smaller than an outside dimension of the ring so that the ring is unable to move past the first end, and the first end is provided with an internal thread sized for threading onto the ends of the lengths of conduit. The retainer means is carried by the outer coupling adjacent its second end for preventing escape of the ring from the bore.

Abstract: A method of joining two tubular members which comprises inserting an end portion, which forms a spigot, of one of them into an end portion, which forms a socket, of the other to achieve an interference fit. The thickness of the wall of the end portion of at least one of the tubular members so varies in an axial direction that, when the spigot has been fully inserted into the socket, the external diameter of the spigot and the internal diameter of the socket are smaller at a first point on the axis than at a second point on the axis, the first point being nearer to the mouth of the socket than the second point.