Abstract: An adjustable and detachable fitting assembly for reinforced hose having an inner fluid sealing tube and an outer reinforcement. The assembly has a nipple insertible into the tube and a sleeve surrounding the nipple but spaced therefrom so that a cutting edge on the sleeve separates the tube structure allowing one separated portion of the tube to fill the space between the sleeve and nipple with the outer separated portion of the tube and the reinforcement filling a space between the outer surface of the sleeve and a socket threaded thereto. The sleeve rotates about the nipple and is longitudinally adjustable with respect thereto while maintaining connection of the sleeve to the nipple. This allows for compensation for misalignment.

Abstract: An improved lawn sprinkler fitting is provided for repairing leaks in lawn sprinkler systems and for replacing leaky components in such systems. The improved fitting of the invention is a tubular coupling having opposite annular ends formed with wall thicknesses which are sufficient to maintain the shape of predetermined circular openings therethrough. At least one intermediate annular corrugated section is disposed between the opposite ends and has a wall thickness less than the wall thickness of the opposite ends. The intermediate section is both longitudinally compressible and longitudinally extendible. The intermediate section of the coupling is compressed to allow the coupling to be inserted between exposed ends of buried lawn sprinkler pipe. A solvent type adhesive is applied to the exposed ends of the pipe and the intermediate section of the coupling is extended, thereby bringing the annular ends of the coupling into contact with the exposed ends of the buried pipe.

Abstract: A field attachable and reusable hose end fitting for convoluted hose. The fitting includes a collar having threads thereon threadable to a convoluted hose end. The same collar has a smooth bore portion encircling the terminal end of the corrugated hose when the collar is threaded thereon. When the nipple of the fitting is inserted into the hose end and the socket of the fitting is threaded to the nipple, the corrugations of the hose are crushed between the inner smooth bore of the collar and the outer surface of the nipple forming a fluid tight seal.

Abstract: A job site formed double sealed, double wall insulated spa pipe coupling is effected between two axially connected coupling components each having a plastic inner pipe and a concentric plastic outer pipe of considerably larger diameter with the pipes being connected by in situ foam insulation filing the space between the pipes. One component has the outer pipe and the foam insulation severed to expose the bare outer periphery of the inner pipe over a short length. The second component similarly formed includes a radially enlarged section over a short length to define a radially enlarged hub. An annular cylindrical collar of a length equal to the length of the hub is adhesively fixed on its inner periphery to the outer diameter of the outer pipe of the first component.

Abstract: A dump fitting on the discharge end of a sewer hose leading from the waste holding tank of a recreational vehicle prevents the hose from jumping out of a sewer drain under the influence of effluent being discharged through the hose. The fitting is in the form of an elbow with one limb received in the discharge end of the sewer hose and the other limb forming an outlet for receipt in the sewer drain. The fitting is of sufficient weight to resist the thrust of effluent flowing through the hose and tending to lift its discharge end. The fitting may be a one-part plastic molding or a two-part fit-together molding.

Abstract: An elbow for a carburettor for defining an air passageway between an air cleaner and a carburettor for supplying clean air from the air cleaner to the carburettor which feeds air-fuel mixture to an internal combustion engine. The elbow is formed of resilient material and has a flange portion formed integrally at end portion thereof.

Abstract: A double-containment thermoplastic pipe assembly is provided to prevent against potentially hazardous spills or leaks of chemicals and the like. The double-containment pipe assembly comprises a containment pipe and at least one carrier pipe disposed therein. The carrier pipe is retained in spaced relationship to the containment pipe by support clips with outwardly extending radially aligned legs. Restraint couplings may be disposed at selected locations along the double-containment pipe assembly. The restraint couplings include a carrier portion, a containment portion and a connecting portion extending therebetween. Double-containment pipe fittings also are provided to ensure complete double-containment protection throughout an entire double-containment pipe assembly.

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: An improved coupling for connecting a pipe joint and a metal pipe which has a relatively small diameter not exceeding about 30 mm and a wall thickness not exceeding about 2 mm is offered. The coupling is often used to form a pipeline for supplying oil, air, etc. to an automobile, machine or apparatus, or collecting exhaust gas, etc. The coupling is to connect a metal pipe to a pipe joint having a bore defining a fluid passageway, wherein the joint includes a cylindrical wall portion extending from an annular shoulder, and the pipe extends into the cylindrical wall portion and has an end provided with a radially outwardly projecting flange. An elastic seal ring is provided adjacent to the shoulder and the flange. A cylindrical member is disposed between the cylindrical wall portion and the pipe for holding the flange and the seal ring against the shoulder, the cylindrical wall portion having a radially inwardly bent end holding the cylindrical member.

Abstract: A breathing circuit connector for intercoupling between the flexible hoses of an anesthesiology machine and the input connector of an endotracheal tube is disclosed. The breathing circuit connector consists of a hollow body of relatively rigid material having a cylindrical male input section and a cylindrical female output section. A cylindrical bore within the hollow body extends between the cylindrical input and output sections. The bore within the cylindrical output section consists of a series of two or more cylindrical portions having different internal diameters. The internal diameter of the first bore portion adjacent the output end of the cylindrical output section is slightly larger than the internal diameter of the bore portion situated within the cylindrical output section. The breathing circuit connector may be formed as an elbow with the longitudinal axis of the bore of the cylindrical output section being inclined relative to the longitudinal axis of the bore of the cylindrical input section.

Abstract: A pressure tank connector apparatus is described, including a fitting body having an integral hollow sleeve portion projecting from one end thereof adapted to extend into an opening in the tank wall and be crimped about an internal flange or lip portion of the tank wall surrounding such opening with a sealing ring of elastomer compressed between a gripping flange portion of the fitting and the tank. As a result, the crimped tank attachment is positioned within the tank so it is protected from vandalism or damage from other causes. The pressure tank connector is coupled by an improved coupling to a flexible conduit such as a hose for supplying compressed air or other gas from the tank to an external device, such as the air brakes of a truck or other vehicle.

Abstract: A blowing device for the elimination of compactions in bulk material storage silos by using air blasts, includes a compressed air storage container, a compressed air supply duct, a compressed air outflow duct and an interposed rapid exit valve. The rapid exit valve has a conduit in which a valve closure is guided whereby the conduit turns into the compressed air supply duct forming an afflux cross-section for the valve piston over a miter cut or tube turn. The afflux cross-section is selected to be significantly greater than the outflow cross-section in the compressed air outflow duct. In this way, the flow losses, and pressure losses, otherwise customary are considerably reduced, so that extremely high flow velocities can be achieved in the compressed air outflow duct until the velocity of sound is reached. The result is a rapid impulse-like discharge of the compressed air storage container and, consequently, faultless elimination of possible compactions.

Abstract: An injection molding apparatus is used to line flanged pipe elbows. The pipe elbow is clamped by the flanges to two pivotted platens, one of which has a curved mandrel to shape the inside of the elbow lining.

Abstract: A tube connector has a cylindrical socket for mounting in a hole of a plate and a connector securable to a desired one of a plurality of radially spaced-apart mounting positions of the socket and having opposite end cylindrical portions for tube connection provided on the axially opposite sides of the socket and communicating with each other.

Abstract: An adapter for coupling a flexible corrugated drainpipe to a sewage disposal site inlet, includes a hollow tubular member having an opened drainpipe end portion adapted to engage threadably an end of a corrugated drainpipe. A hollow adapter member has an opened rear end portion adapted to be inserted into the disposal site inlet, and an opened upstanding front end portion, receives telescopically in a tight fitting relationship an opened rear end portion of the tubular member to interconnect the two members in fluid communication. A quick release mechanism on the tubular and adapter members enables a user to disassemble the two members by rotating the members axially relative to one another.

Abstract: Disclosed is a kit of curvilinear duct components and a method of utilizing the same to provide an improved mode of simultaneously installing and protecting multiple electrical cables in underground duct installations. The components include tubular elbow members, a major portion of at least some of which are of D-shape in cross section and having a major internal width at least as great as the combined diameters of multiple cables to safeguard against cable jamming during installation and which portion converges at one end to a circular shape matable with adjacent linear ducting. The curvilinear components are formed of impervious, electrically nonconductive, abrasion resistant material, such as polymer, concrete or glass filled thermosetting plastic.

Abstract: A wear resistant elbow or bend for use in the pneumatic transport of abrasive materials which comprises an elastomeric liner (14) and a rigid outer shell (30). The elastomeric inner liner (14) has inlet and exit portions that are circular in cross section and connected to a segment that is a closed "U" shape in cross-section. The top of the "U" is the impingement surface (A) that is on the outside of the bend. The impingement surface (A) is essentially flat and on a plane or planes which are inclined so that the angle of incidence (.alpha.) is at least 35.degree., but not more than 65.degree. with reference to the axis of the inlet portion or the direction of the incoming flow of conveyed material (18).

Abstract: A elbow joint for a permanently mounted explosion-proof pipe which is useful for housing and commercial plant sealed electrical wiring systems that includes a plurality of movable rollers mounted within the inside gradually curved wall portions of the elbow pipe which allows an electrical conductor to be inserted or withdrawn around corners in the piping system quickly and easily. The elbow may be molded or fabricated to include one or more undulations disposed on the inside curved surfaces (along the inside radius of the elbow) to house the rollers and axles therein. Because all interior surfaces and members are permanently sealed from possible explosively hazardous atmosphere, no explosive gases may enter the sealed electrical wiring system through this elbow joint, nor may possible internal electrical arcing escape from the elbow joint into a possibly explosive atmosphere.

Abstract: A method and pipe connecting piece for connecting a pipe to a fluid port, such as another pipe. The pipe connecting piece has an end portion for insertion into the bore of a pipe-end, an intermediate portion of larger diameter than the end portion, an attachment means for attaching the connecting piece to a fluid port, and a sleeve.

Abstract: An adapter for coupling a corrugated drainpipe to a sewage disposal site employs a tubular member which is hollow throughout its length for connecting the drainpipe in fluid communication with a sewage disposal site. The tubular member has a drainpipe end portion having a complementary shape and size adapted to engage threadably an end of a corrugated drainpipe, and a sewer inlet end portion adapted to be inserted through an inlet opening of a sewage disposal site.

Abstract: A quick disconnect coupling device for connecting the vertical pipe from a submersible pump in a sewage system to a horizontal pipe includes male and female coupling members. The female coupling member is connected to the horizontal pipe and is coupled to the male coupling member by guideways which are engaged by guide elements on the male coupling member. The male member includes a pair of coupling elements which are connected together to form a 90-degree coupling. A flap type check valve is clamped between the coupling elements of the male coupling member and permits the flow of waste water through the coupling, but prevents the return flow of waste water to the submersible pump.

Abstract: A pipe elbow having a composite ceramic wear liner which is particularly adapted to resist abrasive wear from particulate material conveyed through the pipe elbow. The composite ceramic wear liner is comprised of four series of polyhedron shaped ceramic wear blocks disposed at angularly spaced locations around the circumference of the elbow flow passageway. A mixture of wear resistant particles and binder surrounds the wear bricks and provides an abrasion resistant wear surface along those portions of the pipe elbow which are less subject to abrasive wear. The pipe elbow is provided with a removable cover plate in order to access and replace the series of wear bricks located along the outside center line of the pipe elbow most subject to wear.

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: An articulate bent pipe for transport of powder and slurry is composed of a plurality of sector shaped nodular pipes having a wear resistant pipe lining applied on the interior thereof and packing means positioned between each nodular pipe. The nodular pipes are secured together to form the bent pipe. Steps are formed between axial edges of adjacent inner surfaces of the linings for upstream nodular pipes.

Abstract: A vacuum or pressure coupling device comprises mateable body members, each provided with means for connection to tubular members and at least one of the body members being formed of material sufficiently resilient and distorable for maintaining the body members in sealing engagement with one another.

Abstract: An abrasion resistant pipe bend or elbow for slurry pipelines is disclosed. The bend or elbow has a wall of enlarged thickness disposed in the exterior of the turn of the fluid flow, in the area where impingement of the interior wall of the elbow by solid particulate material is most likely to occur. The wall of enlarged thickness includes a plurality of spaced protrusions which form a plurality of indentations or pockets. Openings of the pockets are disposed in substantial alignment with the instantaneous trajectory of solid particulates transported in the slurry. The pockets become filled with captured solid particles when slurry is transported through the elbow. The particles act as a shield or buffer against further bombardment of the wall of the elbow by the particles. Leading edges of the protrusions optionally have a cladding of an abrasion resistant material, such as a hardfacing composition, and are disposed to have a favorable, usually large, impact angle with the solid particles.

Abstract: An offset nipple or pipe fitting provided with grips to facilitate installation by hand in cramped quarters as typically encountered in the connection of a drain for a bath tub.

Abstract: The disclosure relates to tube couplings in which a hollow body (10) has an opening (11) to receive a tube (15) and a collet (32) having resilient arms encircling the tube in the body to grip the tube. An annular cam (22) is mounted in the body and has a tapered internal cam surface (31) engaged by the collet arms (33) which reduces towards the open end of the body to increase compression of the arms against the tube as the collet is drawn towards the open end of the body to lock the tube in the body. The cam member (27) is mounted in the body for axial adjustment with respect to the body, for example by a screw engagement (28) in the body, to enable the cam to be adjusted with respect to the collet to vary the compressive force applied to the resilient arms.

Abstract: A non-linear pipe segment, such as an elbow or the like, is disclosed having an inner liner (14) of a wear-resistant material. The outer shell of the segment is in two halves (10, 12) which are coated with a layer of bedding material (16) before being secured around the lines (14) by clamps (28).

Abstract: A tubing connector system particularly suitable for use with medical prostheses is disclosed. The system involves of a connector assembly and a connector assembly tool. The connector assembly is composed of a clamping ring and connector body which can be coupled together to connect two lengths of tubing. The connector assembly grips the tubing by compression, advantageously forming an outwardly flared tubing end portion that aids in retaining the tubing within the connector assembly. The connector assembly tool possesses jaws designed to receive and hold the connector assembly members in a nested relation as the tool closes, joining the connector assembly members.

Abstract: A fluid flow conduit having its interior wear surface containing multiple anti-erosion protrusions for reducing erosion caused by flow of fluids carrying abrasive particles. The anti-erosion protrusions are usually located on radial outer portion of an elbow, and are preferably pyramid-shaped and arranged in a staggered pattern relative to the fluid flow direction, but other similar shapes can be used. The protrusions can be made integral with the conduit interior wall, or attached to the wall by welding individual protrusions, or by welding to the wall curved plates each containing a row of protrusions. Such protrusions reduce erosion in conduits for particulate bearing fluid streams flowing at velocities over about 50 ft/sec, to disrupt the fluid flow pattern, reduce the velocity and change the angle of impingement of abrasive particles, in areas where high wear rates occur and substantially reduce the rate of wear on the conduit surface.

Abstract: A wear resistant pipe elbow for use in transporting fluent materials such as in a pneumatic conveying system. The elbow includes a wear back or wear resistant surface on the inside of the outer wall of an arcuate channel connecting an inlet leg with an exit leg of the elbow. The wear resistant surface may include a plurality of steps which extend symmetrically toward the inlet leg and the outlet leg. The center of the steps is preferably located on a radius extending from the center of curvature of the arcuate channel through the junction of the longitudinal axis of the inlet leg and the longitudinal axis of the outlet leg. The wear back or wear resistant surface may be made up of a member including a plurality of ribs which defined spaced apart pockets. These pockets are designed to receive and at least partially retain material being conveyed through the system. While the ribs or steps in the wear resistant backing will wear, the depth of metal in this area will prolong the life of the elbow.

Abstract: Disclosed is an elbow for use in pelletized plastic conveying systems. The elbow includes first and second legs disposed at an angle to each other with an impingement plate disposed therebetween. The impingement plate is positioned to deflect pellets traveling substantially parallel to the axis of the first leg to travel substantially parallel to the axis of the second leg. The elbow includes a funnel section positioned to receive particles deflected by the impingement plate and funnel them toward the second leg. The funnel section also reduces the velocity of the pellets in the vicinity of the impingement plate.

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: An externally commonly threaded split end fitting having a surface serving as a camming surface for an end-mounted nut. By advancing the nut along the split end of the fitting the camming surface reacting upon the nut causes a transmission of force through the nut onto the external threads of the split segmented end of the fitting causing in turn a radially inward pivoting of the jaw-like segments of the split head. The longitudinal axis of the fitting has a passageway for receiving a work piece, whereby the pivoting of the segments clamp the workpiece into the fitting. The fitting is unitary.

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 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 rigid, molded fiberglass duct having an integral bendable elbow comprised of two sections of cured fiberglass securely bonded to a corrugated metal-foil sleeve. The method of manufacturing the rigid bendable duct is by sliding a corrugated metal-foil sleeve on to a mandrel and then wrapping the ends of the sleeve with uncured fiberglass. The area of the uncured fiberglass overlapping the corrugated, bendable sleeve is compacted by means of a collar which fits around the sleeve and the fiberglass and compresses the fiberglass into the corrugations of the sleeve. In order to enhance the bond, protusions may be provided in the overlapping area of the sleeve, such as by cutting the corrugated sleeve and bending it up to form tabs.

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: This invention relates to tubes and tube assemblies of plastics material, particularly for connecting heat-exchangers to circuits. Each tube comprises at least one median section, with ends respectively connected by elbows to an inlet section and an outlet section. Each tube consists essentially of two moulded pieces tightly joined to each other along a parting plane which is chosen so as to cut the median section into two parts along its longitudinal axis. At least one of the two moulded pieces comprises at least one of the inlet and outlet sections.

Abstract: According to the present invention, a coupling member assembly is provided which is of multiple-part construction, and which includes an inexpensive and readily replaceable conduit member formed from an abrasion resistant material, the conduit member being supported substantially throughout its entire outer surface by two or more rigid coupling member sections which are bolted or otherwise secured to each other, and, which provide the major structural strength of the coupling member assembly.

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: The invention pertains to conduit assemblies, such as pipeline assemblies. A first conduit section comprises a first tubular conduit body. A second conduit section comprises a second tubular conduit body connected in end-to-end relation with the first conduit body. The bodies have opposed end faces. The second conduit section further comprises a tubular lining disposed within the second conduit body and having an inner diameter substantially equal to the inner diameter of the first conduit section. An annular seal sealingly engages between the opposed end faces of the conduit body, the seal being sufficiently rigid to maintain an axial gap between said end faces. The tubular lining extends beyond the end face of its respective conduit body into said axial gap and abuts the first conduit section at its inner diameter. Such extending portion of the tubular lining is preferably beveled on its outer side to form a lip at its inner diameter for noncompressive abutment with the first conduit section.

Abstract: An elbow is disclosed for use in effecting short radius turns in fluent transport systems while overcoming the previous problem of high wear at the turn. The subject elbow includes entry and exit ports at right angles to each other, an arcuate channel extending between the ports, and a chamber aligned with but axially offset from the entryport. The effect of this chamber is to provide abrasive resistance for the elbow by allowing a soft plug of the fluent material to form therein. The material forming the plug will rotate in a vortex manner in the chamber. The subsequently passing fluent material will deflect off of the soft plug rather than rub on the walls of the elbow while making the direction change. The elbow may be provided with an optional purge vent entering into the chamber.

Abstract: An improved connector is disclosed for coupling the output breathing circuit connection from a conventional anesthesiology machine to the open proximal end of a conventional endotracheal tube. The connector includes a cylindrical input section, a central flange portion, a cylindrical output section, and a bore extending concentrically therethrough. The input section is provided with a stepped outer cylindrical surface for coupling to the breathing circuit connection. The flange portion is provided with sides or faces to facilitate manual gripping of the connector between the thumb and fingers. Openings are provided through a part of the flange portion to permit the connector to be physically tied to the breathing circuit connection. The inner cylindrical wall of the bore of the cylindrical output section is provided with a narrow ridge or annular ring projecting radially inward.

Abstract: A thermal insulator for pipe elbows and the like, comprises two pairs of split, sleeve-shaped insulative legs having interior channels in which those pipe sections joined by the elbow are received. The insulator legs include dihedral faces which are oriented toward each other at a medial portion of the elbow, and are formed by inner and outer surfaces which intersect at the central axis of the associated leg. These leg surfaces are inclined at an angle equal to a predetermined fraction of the included angle between the joined pipe sections. The inner faces of the insulator legs abut, and a wedge-shaped collar or gore is disposed between the outer leg surfaces, and includes inclined faces which mate therewith, thereby forming a closed, insulative sleeve about the pipe elbow.

Abstract: A high temperature lined conduit comprising, a liner, a flexible insulating refractory blanket around and in contact with the liner, a pipe member around the blanket and spaced therefrom, and castable rigid refractory material between the pipe member and the blanket. Anchors are connected to the inside diameter of the pipe and extend into the castable material. The liner includes male and female slip joint ends for permitting thermal expansion of the liner with respect to the castable material and the pipe member. Elbows and tees of the lined conduit comprise an elbow liner wrapped with insulating refractory blanket material around which is disposed a spaced elbow pipe member with castable refractory material between the blanket material and the elbow pipe member. A reinforcing band is connected to the elbow liner at an intermediate location thereon from which extend a plurality of hollow tubes or pins which extend into the castable material to anchor the lined elbow and permit thermal expansion.

Abstract: A two-piece pipe fitting is disclosed for establishing a sealed connection between a pipe or fluid conduit and a connector body in the form of an electrostatic spray gun. The fitting comprises a flanged tube element and a threaded sleeve nut surrounding the tube element. The sleeve nut, when threaded into a threaded section of a bore in the connector body, forces the flange of the tube element into the bore so as to establish a sealed connection between the bore and the flanged end of the tube element.

Abstract: A swivel coupling for terminating the end of a hose made of resilient material, the coupling having a tubular nipple with a barbed end entering the hose and a cylindrical end extending from the hose and having an O-ring seal extending therearound, and the coupling including a screw threaded fitting surrounding the cylindrical end of the nipple and sealed thereto by the O-ring and having an annular abutment adjacent to the hose, and the coupling further including an annular collar, separable into sectors in the form of shell portions which surround the hose and squeeze it against the barbed nipple, the collar having a grooved structure overlying the annular abutment of the screw fitting and retaining the fitting close to the hose while permitting it to swivel with respect to its axis.