Abstract: An improved quick connect coupling is provided for releasably connecting a pair of conduits, such as ordinary garden hose. The coupling comprises interlocking male and female fittings adapted for respective connection to a pair of hoses, wherein the male fitting includes a male member with an external circumferential groove for axial alignment with a generally opposed pair of arcuate slots in a female member on the female fitting. A C-shaped retainer is carried about the female fitting and includes a central spring base supporting a pair of locking arms which terminate in free ends having axially projecting lock tabs at the radially inner edges thereof, wherein these locking arms extend through the arcuate slots to position the arm free ends in engagement with radially oriented cam surfaces on the female member. In a normal unstressed condition of the retainer, the radially inner edges of the locking arms including the lock tabs extend into the male member groove to lock the coupling.

Abstract: A female anesthesiology connector is provided for connecting a tube supplying anesthesiology gases to an endotracheal tube. The female connector is provided with a longitudinally extending finger having a bevelled locking tooth thereon for providing a positive securement of the male connector of an endotracheal tube with the present female anesthesiology connector. The finger in on a ring inserted into the body of the female connector and secured in place by means of sonic or solvent welding, or a suitable adhesive. The ring and the body together provide an internal groove receiving an O-ring which makes a positive seal with the male connector of the endotracheal tube.

Abstract: The pipe fitting interlocking system includes a central body of predetermined configuration, for example, ell, wye or tee shape of desired large diameter pipe size. The central body terminates at each of its ends in a lock junction to receive thereon in locked relationship an end hub member of the type suitable for receiving and interconnecting the spigot end of a section of plastic pipe. Each lock junction includes a shoulder upon which the end hub member is seated, an endwardly positioned lock and a circular, peripheral recess positioned between the shoulder and the lock. The end hub member includes a radially inwardly inclined projection to cooperate with and securely seat within the central body lock. A circular gasket is secured within the circular recess and biases against a portion of the inner periphery of the end hub to prevent leakage between the parts.

Abstract: A helicoid thread mechanism which comprises a male helically threaded tube and a female helically threaded tube is provided with a helically threaded block for threadedly engaging the female tube onto the male tube. A sliding frictional contact noise which is produced between the two tube members when they engage with each other is eliminated by suitable selection on the helically threaded shape and the material of the block.

Abstract: An article comprises two areas of heat-recoverable woven fabric which are joined together along a line by means of a mechanical joining arrangement, such as stitches, staples or a stitched or stapled zip, which penetrates the fabric. The direction of crimp of the area penetrated is substantially perpendicular to the line of the join, or the two areas have substantially parallel directions of crimp.

Abstract: A coupling apparatus specifically designed for an elbow of a fluid distribution system has a pair of rollers which are rotatable about first rotary axes which are movable with respect to the elbow and second rotary axes which move the first rotary axes in an arcuate path. The rollers selectively engage a locking groove of a second pipe section. The locking groove has arcuate portions with a radius equal to that of the rollers.The rollers are generally moved in unison but are permitted a small range of independent movement to insure locking of both rollers in the locking groove in the event of slight misalignments due to manufacturing tolerances.

Abstract: A connecting member for use in connecting a corrugated conduit to another member. The connecting member has a wall defining a cylinder with circular ends. At least one of the ends is a conduit entry end. A resilient finger is mounted by one end in an opening in the wall. The free end of the finger has a projection extending radially of the wall. The conduit is mounted in the connecting member and held there by the projection cooperating with a rib of the conduit.

Abstract: A telescoping joint for plastic pipe comprises a pair of sleeve members bonded to adjacent ends of a pair of pipe sections, a tubular body member into opposite ends of which sleeve members telescope, with O-ring seals carried by the sleeve members forming a seal against the inner surface of the body member, and tubular adaptor members which fit on the respective pipe sections adjacent the sleeve members and thread into opposite ends of the body member to provide thrust restraint precluding withdrawal of the sleeve members and the pipe sections therefrom. The joint may be used for in situ repairs of fractured pipe, or may be supplied with pipe sections bonded-in, for use in a telescoping joint or union to be coupled into a pipe line.

Abstract: A quick connect coupling is provided for quick and easy connection or disconnection of a pair of conduits, such as ordinary garden hose. The coupling comprises interlocking tubular male and female fittings adapted for respective connection to a pair of hoses, wherein the male fitting includes a male member with an external circumferential groove positioned for axial alignment with a generally opposed pair of arcuate slots in a female member on the female fitting. A generally C-shaped retainer is carried about the female member and includes a pair of locking arms projecting from a central base generally through the arcuate slots with their free ends engaging radially oriented cam surfaces on the female member. The locking arms are normally biased radially toward each other to position their radially inner edges within the circumferential groove in the male member to lock the coupling together.

Abstract: A sliding member is disclosed wherein a sheet-like heat resistant material comprising expanded graphite, mica, etc. singularly or in combination, and a reinforcing material comprising either a combination of a mesh made of metal fine wires with a mesh made by weaving or knitting metal fine wires and fluoroplastic yarns together, or a mesh made by weaving knitting metal fine wires and fluoroplastic yarns together are integrally shaped so that at least on the sliding surface the metal fine wires and the fluoroplastic yarns are exposed, both constituting the reinforcing material, and the heat resistant material held by the metal fine wires and filling the meshes of the mesh as well as the voids formed between the metal fine wires in a mutually intermingled state, exhibiting a smooth surface.

Abstract: A sliding member is provided which comprises a base body made of a firmly entangled and collapsed metal fine wire, with the voids formed between the metal fine wires constituting the metal mesh being filled compactly with a heat resistant material, the sliding surface of the base body being formed into a smooth surface with either a lubricant that fills a number of small holes formed in the heat resistant material as well as covering the surface thereof or the lubricant and the metal fine wires being exposed.

Abstract: An aquatic vacuum hose swivel cuff coupling comprises, in combination, a blow-molded vacuum hose and a molded swivel cuff. The hose includes one end which terminates as a right cylindrical end portion and a hose ring provided substantially adjacent to the cylindrical end portion whereby a circumferential groove is provided between the cylindrical end portion and the hose ring. The swivel cuff component has a seating portion for receiving the cylindrical end portion of the hose and an annular ring adapted to fit within the circumferential groove of the hose, the annular ring being provided about the hose entrance to the seating portion of the cuff. The cylindrical end portion of the hose is maintained within the seating portion of the cuff by the annular ring being disposed within the circumferential groove whereby the hose may be swivelably rotated within the cuff. The hose end components are extruded with the continuous extrusion blow-molded hose thereby eliminating the need to weld components such as seals.

Abstract: A sheet is disclosed for forming a plurality of coupling bands for connecting the ends of corrugated drain tubes having external grooves. The sheet includes a plurality of parallel lines of hollow lugs. The lugs are separated from each other by an integral web of plastic material. The lugs in each line are spaced sufficiently to allow the resulting coupling bands formed from the sheet to bend freely about the drain tubes to which the couplings are applied. Each line of hollow lugs includes a plurality of spaced-apart columns of hollow lugs aligned in end-to-end relation. Each column includes, in sequence, a first end lug formed to include a flat end wall upstanding in substantially perpendicular relation to the plastic web, a plurality of intermediate lugs of generally frustro-pyramidal shape, and a second end lug formed to include a flat end wall upstanding in substantially perpendicular relation to the plastic web.

Abstract: A four component sewer coupling arrangement for recreational vehicles and the like is disclosed including a recreational vehicle sewer outlet fixed to the vehicle, a threaded closure cap for closing the outlet when the vehicle is in transit, a tether line connecting the closure cap and outlet so that the closure cap is not inadvertently lost or mislaid, and a flexible drain hose having a threaded connector at one end for connecting the drain hose to the outlet when the closure cap is removed so that an end of the flexible drain hose opposite the threaded connector may be connected to a sewage disposal location for discharging sewage from the recreational vehicle by way of the flexible drain hose to the sewage diaposal location. A quick release spring coupling may be substituted for the threads. Both the closure cap and threaded connector are provided with means for facilitating their tightening and loosening relative to the fixed outlet thereby providing a good seal to the outlet.

Abstract: A connecting pipe part of a resilient material for connecting a closet bowl to a drain conduit comprises on one end a female part for receiving an outlet of a closet bowl and on the other end a male part to be received into a drain pipe or conduit, while a sealing sleeve connected with the female part extends within the female part.Said sealing sleeve merges through a discontinuously thinned transition. Into the female part, the thickness of the sleeve being thinner than the thickness of the female part.The transition is preferably located halfway in a plane parallel to the inner wall of the female part, said plane being located midway between the inner side of the female part and the extension of the inner side of the male part.End part support members extend in the direction of the male part.

Abstract: A fitting for connecting tubes which have circumferentially extending axially spaced ribs with recesses defined between the ribs comprises a socket member which advantageously has a cavity at one end of smaller diameter than a cavity at its opposite end which is adapted to receive the tube. The ledge is formed between the two cavities and a resilient member such as a sealing sleeve is disposed against the ledge at the inner end of the larger diameter cavity. The tube to be connected is positioned in the larger diameter cavity against the sealing sleeve such that its ribbed circumference underlies the slot in the larger diameter cavity which is closable by a locking fitting. The locking fitting includes an inner end which is adapted to be secured to the socket and which in one embodiment includes a bending strip which is affixed to the socket and supports the remaining portion of the locking lid at an acute angle with respect to the exterior surface of the socket.

Abstract: A union or coupling for medical instruments or pipes, more specially for injection, transfusion or infusion has a male half with radial nosepieces for locking it in position and a female half with a guide structure and a keeper part, placed proximally of the guide structure, for fixedly locking the nosepieces on the male half proximally of the locking nosepieces of the female half with the nosepieces on the male half seated in radial pockets in said female half. Each nosepiece on the male half has stop ends running parallel to the axis of the male half and each pocket has opposite stop ends, parallel to the axis of the female part for acting against the stop ends on the spigot nosepieces and stopping turning of the male half in relation to the female half.

Abstract: A non-ferrous pipe coupling comprises tubular threaded male and female coupling elements attached to ends of respective pipe sections. The male element terminates in a cylindrical non-threaded, non-tapering sealing surface adjacent its threads and the female coupling element, which may be filament-wound, includes an internal sealing sleeve or liner with a web that provides a lip seal around the cylindrical sealing surface of the male element. The web is urged into sealing engagement with the cylindrical surface by fluid pressure within the coupling. The liner precludes egress of fluid from within the coupling through the female coupling element.

Abstract: A system for distributing fluids over a planar surface comprising a plurality of lengths of rigid perforate tubing and a plurality of fluid-tight articulated joints, each joint having an inlet port and a discharge port. The lengths of tubing and the joints are connected ad seriatim with joints interposed between adjacent lengths of tubing whereby the tubing can be arranged in accordance with the distribution pattern over a portion of the area. Each port of the fluid-tight joint communicates with a body element having a central bore and a peripheral flange. The flange of the inlet port mates with the flange of the discharge port so that the central bores fall into register with one another and the body elements of the respective ports communicate so that fluid introduced into the inlet port exits through the discharge port.

Abstract: A pipe coupling apparatus comprising a concentric, relatively telescoping tube is adapted to be inserted into a receptacle. A deformable head at the distal end of the tube is deformable to an enlarged, preselected retention configuration wherein the head engages the inner wall of the receptacle to hold the pipe coupling in a locked position. Relative axial shifting of the tube deforms the head from the locking configuration to a collapsed and elongated configuration wherein the head elongates to facilitate insertion or removal of the coupling from the receptacle.

Abstract: A roof flashing and method of making same in which both the collar and base member of the flashing are made of elastomeric material. The base member is molded first and has an opening therein surrounded by a stepped flange provided with a series of circumferential slots therein. The collar is molded onto the base member during a subsequent molding operation in which the material of the collar is injected through the slots and completely around the top, bottom and inner side edge of the flange to form a series of closed loops thus providing a positive mechanical lock between the collar and base member. Also, the heat of the elastomeric material of the collar during the second stage molding process causes some melting of the elastomeric material of the base member whereby the collar and base are also fused together.

Abstract: Segments of a coupling for use in a high-pressure piping system are provided with cast multiple keys in their as cast condition, and which are for reception within corresponding plural or multiple grooves in pipe ends, crushing of the operative faces of the keys and cold working of the faces of the pipe grooves in engagement therewith providing for equalization of the axial loading imposed on the respective keys.

Abstract: A coupling for joining two pipe sections having elongated outer surfaces and end terminals, comprises:(a) a tubular extension fitted endwise between the pipe terminals to form joints therewith,(b) first and second collars telescopically movable axially of the tubular extension into coupling positions spanning the respective joints,(c) one collar having an axially elongated bore and counterbore, one of which has elongated slideable engagement with the outer surface of one end of the extension, and the other of which has elongated slideable engagement with the elongated outer surface of one pipe section,(d) the other collar having an axially elongated bore and counterbore, one of which has elongated slideable engagement with the outer surface of the other end of the extension, and the other of which has elongated slideable engagement with the elongated outer surface of the other pipe section,(e) and liquid bonding agent between the collar and said pipe sections and said extension to bond the collars to the exte

Abstract: A first pipe is connected to the wall of a container such as a larger pipe, tank or other vessel, wherein the transverse surface of one end of the first pipe is substantially flush with the inside surface of the portion of the wall of the container to which the first pipe is connected. The method for forming the pipe connection relies upon the plastic memory of the synthetic thermoplastic polymeric material from which the end portion of the first pipe and the portion of the wall of the container, to which the first pipe is to be connected, are formed. The diameter of a hole in the wall of the container is expanded in a cold condition in such a manner that the edges of the hole expand outwardly from the wall of the container while the diameter of the end portion of the first pipe is reduced in a cold condition such that the reduced diameter portion of the first pipe can be inserted into the expanded hole.

Abstract: A flexible tubular assembly having an outer flexible tube through which extends an inner flexible tube which is connected to a tubular element having an elbow-shaped locking piece. The outer flexible tube is joined to the tubular element and the inner flexible tube extends through a cylindrical section of the tubular element to the exterior of the element thereby exposing the end portion of the inner flexible tubing. The spout area of the elbow-shaped locking piece is inserted into the inner flexible tubing and thereby distends the tubing against the sides of an internal tubing and thereby distends the tubing against the sides of an internal tubular stub within the tubular element and locking the tubing in place. Outwardly extending ears on the elbow engage inwardly extending slots on the tubular element thereby holding the elbow in place. The device is specifically useful in anaethestic devices insuring the safety of a patient.

Abstract: A seal for use in an underwater connector having first and second mating members each of which has a coacting mating surface with a plurality of fluid passageways for mating with the passageways of the other member. The seal is a resilient tubular member having threads on a portion of its outer diameter for connection to a passageway on one of the members. The seal includes a fluid sealing surface on its outer end for mating with the other member and the seal includes a fluid sealing surface on its inner end for sealing with the one member. The sealing point of the sealing surface on the outer end has a diameter at least as great as the diameter of the sealing point of the sealing surface on the inner end. The sealing surface on the inner end is formed by an O-ring seal in a groove in the annular resilient seal. The sealing surface on the outer end includes a ridge.

Abstract: A connecting nipple for engagement with a tubular member having a circumferential surface with a locking groove therein comprises a tubular part with a wall having an outer recess on its circumference and a bore intersecting the recess extending through the wall. A locking member is engageable in the recess and has a projecting portion engageable through the bore to the locking groove. A resilient deflecting portion is defined between the recess and the bore which must be displaced to permit insertion of the locking member and which effects the holding of the locking member in a locking position after it is inserted.

Abstract: A tube securing mechanism for retaining a resilient tube on a rigid tube connector, for use in a patient breathing circuit of a respirator. In one embodiment of the invention, the tube securing mechanism is a clamp (22) having a circular band (30) with a peripheral break in it, and two integral arcuate portions (32 and 34) hinged to the band and to each other, to form a toggle mechanism by means of which the clamp is opened and closed. A pair of integral teeth (50) on the band and another pair (52) on one of the arcuate portions of the clamp, engage each other to protect the hinges of the clamp from unnecessary stress. In another embodiment of the invention, a tube (10) has two internal annular features (64 and 66) that are complementary to corresponding annular features (60 and 62) on a connector (12'), to hold the tube more securely on the connector.

Abstract: An improved tubing connector with a connecting tip designed to adapt all sizes of tubing commonly employed in nasogastric and gastrostomy feeding. This tubing connector comprises a one-piece hollow unit having at one end a smooth tapered sleeve with an outer concentric shielding member which end serves as means for permanent attachment to a standard sized supply tube such as an out-dwelling tube attached to a reservoir; and at the other end, representing the adaptable connecting tip, an outwardly flared portion where the flaring is accomplished first by smooth taper in the tip end area and then by multiple tapered flanges of increasing diameter as distance from the tip end lengthens. This novel embodiment of adaptable connecting tip features permits a secure fit regardless of tubing size, but with ease of connection and disconnection. These characteristics are highly desirable for use with in-dwelling surgical tubing which requires delicate manipulation.

Abstract: A plurality of internal couplers (A, B, C, D) are integrally connected end to end in a single tubing construction of indeterminant length. Between each coupler is an annular, frangible region (14, 24) of thin plastic. In the field, the individual couplers are readily broken manually from the tubing construction. Each coupler includes a plurality of cleats (40) which are partially surrounded by a region (50) of relatively thin plastic material. The couplers are manufactured by continuously blow molding a sleeve of softened plastic into the tubing construction of indeterminent length.

Abstract: A tube connection fitting comprises a body member formed with an annular recess for receiving the end of a tube to be connected, and a cap threaded onto the body member and including a plurality of fingers engaging the end of the tube received within the annular recess. The outer end of the annular recess is shaped in such a manner that it accomodates different sizes of tubes, and securely locks and seals the tube within the recess.

Abstract: A joint configuration for joining two articles of thermoplastic material by thermal bonding using an electrical heating element, wherein a female fitting having a portion with an enlarged diameter receives the end of an inserted pipe on two raised portions constituting lands on the inner diameter of the fitting, and the central annular recess between the two lands receives and positions the electrical heating element which fuses the thermoplastic material. The two lands, each compressed against the outside of the inserted pipe by an external clamp, confine and retain the fused thermoplastic material within the central annular recess to effect an increased internal pressure which promotes the formation of an extensive, continuous, and sound bond between the fitting and the inserted pipe.

Abstract: The invention is a coupler for interconnecting the ends of two fluid conduits wherein the connectors are each mounted inwardly of the open end of respective cupped members; the cupped members telescope one over the other and one of them has a flared end to assist in the initial alignment of the telescoping action. The connectors connect with each other to establish fluid flow as the cupped members are telescoped together.

Abstract: A fiber reinforced plastic pipe tee is formed by winding glass rovings around a mandrel in a plurality of wrap patterns which collectively cover the pipe tee. A tape having synthetic fiber warp and glass roving weft is included in wrapping of the pipe tee. Such glass reinforcing fibers are oriented in the tee for resisting biaxial stresses. A bulge is provided on each side of the pipe tee in the diaphragm area for resisting biaxial stresses without introducing problems in winding the pipe tee.

Abstract: A pipe tee comprises a substrate having deposited thereon a reinforcing wrapping of a resin-impregnated filament.

Abstract: A fitting (30) for use with soft tubing (40) is disclosed. The fitting includes a threaded female member (36) defining an aperture for insertion therethrough of the tubing. The fitting further includes a male member (32) defining a generally tubular portion (46) adapted for insertion into the end of the tubing. The male member includes a radially extending flange for preventing the insertion of tubular portion into the tubing beyond a predetermined distance. The male member is further threaded for threading onto the female member. A sliding mandrel (48) is positioned on the tubular portion for axial movement thereof. The female member includes a generally inwardly projecting collar portion (64) for engaging the outer surface of the tubing, the collar portion cooperating with the sliding mandrel to maintain the tubing in the fitting when a tensile pull is exerted on the tubing.

Abstract: A connector fitting by which corrugated conduit can be quickly connected to an electrical box. The fitting includes a pair of hingedly interconnected semi-cylindrical collars. Two spaced, box engaging projections are carried on, and extend axially from each of the semi-cylindrical collars, and the inner side of each semi-cylindrical collar is grooved to mate with and engage corrugations carried exteriorly on a corrugated conduit to be connected to an electrical box by the use of the fitting. Each of the box engaging projections includes a wedge shaped free end portion and a web portion by which the wedge shaped free end portion is connected to one of the respective collars. Each wedge-shaped end portion, its associated web portion and the collar to which the web portion is connected define an arcuate channel or relief for receiving and engaging the portion of the wall of an electrical box which surrounds an opening into which the connector fitting is snapped.

Abstract: Flexible tubing for use in connecting a pneumatic foot controller to a sewing machine is provided at one end with a detachable plastic connector including a tight fitting tube supporting sleeve and a serrated end fitting which is locked in place in the tubing with the sleeve.

Abstract: A synthetic plastic pipe coupling comprising an internally threaded fitting of synthetic plastic material and a pipe of synthetic plastic material. The material of the fitting is harder than the material of the pipe so that the threads of the fitting act as a die for the creation of helical grooves on the pipe as the pipe is hand screwed into the fitting. The pipe is continued to be screwed passing the threaded portion of the fitting to a cylindrical portion adjacent to the threaded portion, which has a diameter not greater than the internal diameter of the threaded portion, so that the initial grooves are erased and the pipe is compressed to a lesser diameter for the purpose of creating a fluid tight contact zone operating hydraulically in favor of pressure and proportionately to it.

Abstract: An expendable adaptor for quick coupling flexible hoses to a variety of devices such as oxygen breathing equipment and including an enlarged deformable head portion having at least a pair of concentric sleeves the inner of which is axially recessed so that its forward face engages an end edge of a complementary coupling fitting in sealing relationship while the outer sleeve surrounds the fitting in a secondary sealing as well as anchoring relationship.

Abstract: A plurality of internal couplers (A, B, C. D) are integrally connected end to end in a single tubing construction of indeterminant length. Between each coupler is an annular, frangible region (14, 24) of thin plastic. In the field, the individual couplers are readily broken manually from the tubing construction. Each coupler includes a plurality of cleats (40) which are partially surrounded by a region (50) of relatively thin plastic material. The couplers are manufactured by continuously blow molding a sleeve of softened plastic into the tubing construction of indeterminent length.

Abstract: Two pipes for low pressure water systems include a pair of tapering surfaces secured together by a threaded engagement in which the thread of one member extends helically for less than three hundred sixty degrees.

Abstract: Disclosed is a pipe coupling for coupling a first section of pipe with a second section of pipe. A threaded sleeve comprised of two identical semi-circular connector members is received in an annular recess formed in the exterior surface of the first pipe section. The second pipe section is secured to the first pipe section by means of an internally threaded female coupling nut. Piloting means are provided on the connector members and first pipe section to ensure proper orientation of the connector members with respect to each other.

Abstract: A connector for coupling a hose to a faucet or the like includes two molded plastic members which are coupled together by a bayonet-type connection. One member carries a resilient seal which has an annular lip inclined radially inwardly and axially toward an axially facing annular sealing surface on the other member. When the members are coupled, the lip flattens against the sealing surface to form a seal between the members and, in this condition of the parts, the resiliency of the lip also produces a force which keeps the bayonet-type connection in the locked position. When the members are being coupled while water is running through the member with the seal, an annular groove in the sealing surface causes water to backwash and clean the sealing side of the lip as well as the sealing surface itself.

Abstract: The pipe fitting includes a center body of predetermined configuration, for example, wye or tee shape, of desired pipe size. The center body terminates at each of its ends in a lock junction to receive thereon in locked relationship an end hub of the type suitable for receiving and interconnecting the spigot end of a length of plastic pipe. Each lock junction includes a shoulder upon which the end hub is seated, an endwardly positioned lock and a circular, peripheral recess positioned between the shoulder and the lock. The end hub includes an inwardly inclined projection to cooperate with and securely seat within the center body lock. A circular gasket is secured within the circular recess and biases against a portion of the inner periphery of the end hub to prevent leakage between the parts.

Abstract: An automotive type fuel tank-filler pipe connector consists of a one-piece flexible grommet having relatively rigid inserts embedded in the wall of the grommet and extending axially, the inserts comprising a number of flexible finger-like elements circumferentially separated but joined at one end by a chamfered nose portion, insertion of the grommet into a fuel tank opening being accomplished by the deformation of the nose portions being permitted by the radial inward collapsing of the fingers, passage of the nose portion past the tank opening returning the fingers outwardly; the insertion of the fill pipe camming the fingers further outwardly to clamp against the pipe, a further screw type hose clamp further clamping the grommet to the pipe.

Abstract: A plastic pipe element comprises an inner one-piece liner of thermoplastic material. The liner is formed so as to include at least one cylindrical leg having a free outer end and inner end disposed intermediate opposite ends of the liner. At least one pipe section is formed comprising an inner thermoplastic lining and a fiber reinforced outer layer. That pipe section is bonded to an outer surface of the cylindrical leg such that an inner end edge of the pipe section overlies the liner. A sheet of fiber reinforced thermosetting resin molding compound is applied externally around the inner end edge of the pipe section and is subjected to pressure and heat to form the sheet into a desired shape. Thereafter, the sheet is allowed to harden. Elements formed in this manner include a T-fitting, a pipe flange, a 90.degree. fitting, a reducer fitting, a 45.degree. fitting, and a pipe cap.

Abstract: A hollow cylindrical member having a plurality of sets of threads formed on its exterior such that the member may be used as a nipple of one length or severed at different positions to form up to three useful nipples of lesser lengths.

Abstract: A hose coupling is of the type wherein the end portion of an elastic hose is slipped over a pipe whose end portion has at least one external collar. The hose is held against axial movement relative to the pipe by a ring-shaped elastic clamping device having an internal bead whose inner diameter exceeds the maximum diameter of the collar. The outer diameter of the end portion of the hose in unexpanded condition of such end portion also exceeds the maximum diameter of the collar. The wall thickness of the end portion of the hose is such that it exceeds half the difference between the inner diameter of the bead and the maximum diameter of the collar. The clamping device is slipped onto the end portion of the hose before the end portion of the hose is slipped onto the end portion of the pipe whereby the clamping device travels over and beyond the collar.

Abstract: A tubular body includes an enlarged counterbore extending inward from at least one end to receive the pipe end of plastic pipe to be coupled. For coupling the received pipe, a tubular stiffener is seated against an inward radial shoulder of the counterbore and extends in a slip fit inward of the pipe end. A spacer retainer ring of generally U-shaped section surrounds the pipe end at the shoulder location while juxtaposed outward thereof are a complementary chamferred gripper ring and locking ring arranged in a ramping relation to each other. Inward threading of an end nut applies sealing pressure against a contained gasket while forcing the locking ring axially inward until stopped by engagement against the back face of the spacer ring. Concomitantly, the gripper ring is collapsed inward by the ramping force of the locking ring as to effect a controlled grip relation with the pipe periphery thereat.