Abstract: A socket accommodates pipes of different wall thicknesses that are to be joined by a fillet weld. The socket has a body with a central opening in one face. The face includes a series of physical indicators each of which are spaced from the opening a distance corresponding to the proper fillet height for one of the pipe wall thicknesses. The indicators may be a series of steps, protrusions, or grooves. The socket may be formed in an adapter to join pipes to another member, or the socket may be formed integral with a member such as a valve body, a flange, or a pipe connector.

Abstract: A coupling having an extending repositionable discharge tube for engagement with a discharge hose is mechanically lockably attachable to either of two different conventional waste water discharge outlets mounted on a recreational vehicle. Each of the waste water discharge outlets includes a set of four equiangularly spaced dogs and the set of dogs on each discharge outlet is differently configured. The coupling includes a different set of locking slots disposed at each end for receiving and lockingly engaging a corresponding one of the two sets of dogs. The discharge tube is relocatable to extend from one end of the coupling to permit engagement of the set of slots in the other end of the coupling with the set of dogs corresponding with the discharge outlet.

Abstract: A gray water line adaptor formed from a polymeric material is useful for draining water, other than sewage from motor homes, RV's, campers and the like while maintaining required sanitation. The adaptor is placed in the sewer receptacle stub to prevent odor and bacteria escapage. The adaptor can also be coupled to a conventional sewer hose for sanitary fresh water rinsing of the sewer hose by utilizing the water hose connector positioned atop the adaptor.

Abstract: One end of a sleeve is inserted into a waste water discharge outlet of a recreational vehicle until an annular flange abuts the discharge outlet. Each of a plurality of plastic ties interconnects one dog attendant the discharge outlet and the annular flange to retain the sleeve in engagement with the discharge outlet. A cap is removably attached to the other end of the sleeve to close the sleeve when a conventional discharge hose is not mounted on the other end of the sleeve. The cap may include a hollow threaded boss for threadedly engaging the end of a garden hose. A further removable cap is included for the boss to accommodate closure of the boss.

Abstract: On a bottle testing apparatus which has a plurality of sampling tubes which can be lowered into the bottles, the said tubes are individually detachable for cleaning. Hence they can be quickly and easily replaced with clean tubes. In addition, an adaptor is provided by means of which a cleaning fluid can be passed through the pipes of the apparatus.

Abstract: A separation preventive pipe joint is provided, in which a locking ring is held by an elastic ring with its axis centered in a locking ring receiving groove. An outer peripheral projection is formed on an end portion of the spigot, the outer peripheral projection being engageable with the locking ring from a location deeper than the locking ring. An inner peripheral projection is formed in an inner peripheral portion of the socket which is located deeper than the locking ring receiving groove for backing up the locking ring. A first inner peripheral surface having a larger diameter than the inner peripheral projection is formed in an inner peripheral portion of the socket which is located deeper than the inner peripheral projection. A second inner peripheral surface is formed between the first inner peripheral surface and the inner peripheral projection, the second inner peripheral surface being larger than the inner peripheral projection and smaller than the first inner peripheral surface in diameter.

Abstract: A gas rail includes, preferably, three conduits designed to convey vacuum, pressurized oxygen and air, respectively, for a fluid flow system designed to be located in a hospital room. The gas rail includes a fluid coupling for each conduit so that each conduit may be coupled to its respective source as well as to its ultimate destination. The gas rail is mounted on a wall in the hospital room by virtue of a bracket mount with the gas rail and the bracket mount having interengaging portions permitting the gas rail to be mounted to the bracket mount in any one of two distinct, diverse orientations. The bracket mount also has the provision of structure permitting installation of a clip designed to retain electrical conductors which may be mounted in the bracket mount.

Abstract: A replacement faucet sprayer hose installation kit containing a hose segment having predetermined standard male and female fittings permanently attached to the opposite ends thereof, and a plurality of male and female adaptor fittings adapted to selectively interconnect the male and female hose fittings to the water outlet line of a faucet and to a pull-out faucet spray head.

Abstract: A water pipe connecting structure composed of a hexagonal locking nut, a coupling pipe, a connecting pipe, a metal fastening sleeve and a conic watertight washer. The locking nut has an inner flange at one end. The coupling pipe is divided by an expansion neck portion into an upper head portion and a lower binding portion formed with several slideproof check rings. The coupling pipe is fitted into the locking nut with the expansion neck abutting against the inner flange of the locking nut and with the binding portion extending through the inner flange to insert into the fastening sleeve fitted with one end of the connecting pipe. The fastening sleeve receiving the binding portion is rolled and pressed so as to bind therewith. An outer flange is formed at a top end of the head portion of the coupling pipe. The outer flange has an inclined outer periphery for engaging with the washer and preventing the same from dropping out.

Abstract: A wellhead flange assembly 12 is provided for interconnecting the threaded end of an upwardly projecting screwed wellhead 16 with a lower flange of the blowout preventer 24. The flange assembly comprises a threaded adapter 40 including a thin-walled portion 54, a flange support portion 56, and an upper stop portion 52. A wellhead flange 42 includes a plurality of bolt holes 44 and an upper surface 51 for engagement with the lower flange of the blowout preventer. A plurality of securing members 48 are provided for selectively connecting and disconnecting the wellhead flange 42 and the threaded adapter 40. An adapter-to-flange seal 60 is provided for sealing engagement between the threaded adapter 40 and the wellhead flange 42. According the method of the invention, the threaded adapter may be easily heated to facilitate removal from the screwed wellhead, or may be cut off the screwed wellhead without damaging the screwed wellhead, thereby permitting the reuse of the wellhead flange on a new well.

Abstract: A through-wall sleeve assembly includes an elongate sleeve having an axial passage, open ends and a radially constrictible frustoconical flange at one of the ends. The sleeve is inserted through a bore in a wall, with the flange at the leading end of the sleeve so that the flange is constricted by the wall or by an outer tube inserted in the bore. The flange returns to an expanded, relaxed condition when it projects beyond a remote surface of the wall and forms a seal with the remote surface when the sleeve is drawn back. An item such as a nozzle, hook or eye having external threads is inserted in the axial passage and fixed relative to the sleeve.

Abstract: An adaptor for use with dockside pumps to facilitate pump out of sewage holding tanks is constructed so that it readily accommodates both of the two most common fittings for dockside pumps, an elastomeric material right circular cone frustrum, and a cam actuated fitting having a number of curved locking surface locking cams. The adaptor is a tubular body of rigid material having first and second ends with a concentric bore. An interior surface of the first end defines a cone frustrum cooperable with the dockside pump cone frustrum fitting, and the exterior surface of the first end is a cylindrical surface with a semi-toroidal recess at a central axial portion, which recess cooperates with the curved surfaces of the locking cams. The second end of the adaptor has external threads that fit one of three common sizes of boat deck fitting internal threads (e.g.

Abstract: An adapter (70) for connecting a banjo fitting (44) of a transmission oil cooling line (21) to a flushing unit or cooler fixture hose (73) has a banjo nut (56') joined to a hollow tubing (71). Tubing (71) terminates in a flared end (72) which passes through an axial bore (45) of banjo fitting (45) and is secured by a radiator clip (74) within hose (73). Bore (44) has front and rear openings surrounded by ring-shaped external surfaces (46). A sealing nut (75) threads onto a threaded shank portion (57) of banjo nut (56') to establish an "O"-ring (76) seal against one surface (46) about tubing (71), and to seal the other surface (46) with a washer (63) at an underside of a head (58) of banjo nut (56').

Abstract: A pipe coupling comprises a pair of flanges adapted to be secured together in face to face relation to form a fluid-tight coupling. Each flange incorporates at least one coding device formed to provide a key and a keyway, which coding devices are so disposed and arranged on the flanges that the two flanges can only be secured together to form the fluid-tight coupling if the coding devices on the respective flanges correspond with one another, and each of the pair of coding devices comprising, secured within a hole in a flange, a bar member whose cross section is partly cut away to provide the keyway and key, and the bar member being secured in the hole in one of a predetermined number of relative orientations, selectively achieved by adjusting, by rotation, the bar member in the hole.

Abstract: A paint brush includes a receptacle at the end of the handle of the brush designed to be attached to standard water faucets, garden hoses, or other fluid sources for self cleaning. When attached to the faucet, fluid enters a hollow receptacle and then into a hollow handle and into the brush head where the fastened ends of the bristles are encased. Gaps between the bristles allow fluid to pass down into the bristles dissolving paint clinging to the bristles thus cleaning the brush. The handle can be removed from the head and the receptacle can be removed from the handle and the receptacle can be directly attached to the head to enable the receptacle and head to be attached to a faucet.

Abstract: A plumbing hookup kit includes a length of flexible tubing having terminals mounted on each end; different sized brass compression nuts; a brass ferrule; a pair of identical plastic sealing sleeves of one size and a pair of identical plastic sealing sleeves of another size; four identical split locking ring components, pairs of which are adapted to be combined into a locking ring; a pair of identical sealing rings of one size and another larger sealing ring. Different components of the plumbing hookup kit enable the establishment of a fluid tight connection between any of a number of different male threaded fittings in 3/8", 7/16" and 1/2" sizes, each of the type that cooperates with a corresponding one of a plurality of coupling nuts.

Abstract: A rectal speculum for use in conjunction with a colon lavage apparatus has a pair of opposed lateral inlets disposed at the distal end for receiving fecal matter. An inlet tube includes a first annular barb at the terminal end for engagement by the end of a first length of tubing and a second annular barb for engagement by the end of a second length of tubing after severance of the first annular barb.

Abstract: A combination fluid flow port which can be used as both a full size threaded port and a full size flange port is provided with an annular ring constructed and arranged to fit closely within a counterbore in the end of a threaded hole in the port to provide a face aligned with and extending radially inwardly from the mating face of the port body for use in enclosing the O-ring seal of a flange type male half connected to the port.

Abstract: A repair flange comprising members of flat, thin, preferably non-corrosive sheet material dimensioned so as to be flush mounted over finished floor surface. The repair flange is designed to fit around the necks under the attachment rim of various size closet flanges and has an opening offset from the usual circular opening wherein the inner edges of two flange members can be proximate one another, spaced a distance apart or staggered. The flange members wherever their location, fit closely around the neck of the closet flange and the flange body extends over the floor surface beyond the area encompased by the rim of the closet fiancee so that attachment to the floor material can be made beyond the base cf the closet flange. The repair flange primarly adapted to repair floor material directly under the base of toilet bowls which contributes to a snug and tight connection of the toilet bowl to the floor system.

Abstract: An automobile engine hose replacement system for providing a customized hose that is connectable between two couplings or nozzles in any automobile engine is provided. The hose replacement system includes a length of hose and a plurality of various size adaptor members. The length of hose is suitable for being cut to any desired length for providing a hose member having first and second ends. Each of the adaptor members is suitable for coupling to either end of the cut hose member in order to selectively adjust the hose diameter at either end. As a result, the hose member may be selectively connected to any pair of nozzles, whether they be of the same size or of differing sizes.

Abstract: A life raft storage and inflation assembly, or system (12) of a type having a deflated life raft (22) stored in a separable canister (14) includes a hose assembly (34, 34') which can be broken down for coupling a selectively activated nozzle of a compressed-gas cylinder (24, 24') to an inlet cock (32, 32') of the deflated life raft. The hose assembly is comprised of a thermo-plastic hose (36); two brass sockets (38) which thread onto an outer surface of the hose; and two coupling fittings, a male life raft coupling fitting and a female cylinder coupling fitting. Each of these coupling fittings has a threaded nipple (52) on one end. These nipples are screwed through ends (48) of the sockets into the interior of the hose. Couplings at the other ends of these coupling fittings are designed differently. A female, or cylinder, coupling (60) of the female coupling fitting has female threads (82) that mate with a male nipple on the gas cylinder.

Abstract: Fittings are provided for flexible sewage drain hoses to connect recreational vehicles to sewage facilities as may be found in public parks or other locations. The fittings include a shallow groove for storing an elastic ring, and a wider, deeper groove for placing the flexible sewer hose thereover. The ring can be quickly, easily manually dislodged from the storage groove and directed over the end of the hose where it contracts and securely holds the hose onto the fitting within the wide groove.

Abstract: A spring connecting or adapted to connect the cut-off ends of an exhaust pipe, particularly of a tractor or the like, after it has been cut in two. The spring is preferably welded at each end to a corresponding end of the exhaust pipe cut in two, or, when an adapter or flared connector pipe is used at each end, the adapter or flared connector pipe is so welded. A flexible liner hose may be used and may have each adapter embedded in it. Each adapter may have a notch or V-cut in it at each cut-off end of the exhaust pipe.

Abstract: A drain hose assembly for an automatic washer comprising a flexible corrugated plastic hose having an end inter-connectable with the automatic washer and a second barbed connection end insertable into a tubular elastomeric connection member such that a rotatable sealable connection is provided between the barbed connection end and the tubular elastomeric connection member. A flexible corrugated plastic extension member may be provided having the tubular elastomeric connection member integrally molded onto one end. The extension member may have, at the end opposite the elastomer connection member, a barbed connection end for further interconnections. The extension member may therefore, be sealably and rotatably connected to the drain hose for adding length. An elastomeric tubular nozzle formed into an approximate 180.degree. arc and having an enlarged end including the formed elastomeric connection member may be provided for providing a discharge end to the drain hose assembly.

Abstract: An adapter mechanism for use between an engine and an oil cooler manifold, includes a special nut having internal threads for screw-on engagement with an externally threaded engine boss. External threads on the nut mate with threads on a central wall portion of an associated oil cooler manifold to operatively connect the manifold with oil passages in the engine block. Differently dimensioned nuts may be selectively utilized to connect a given manifold with a range of different engines. An annular adapter plate is positioned between the manifold and engine to provide sealed passage connections to or from the manifold passages.

Abstract: A device for unplugging drains comprises an elongated body defining therein a longitudinal bore and including a pair of opposed end sections each adapted to threadably receive a standard hose and provided with two different configurations of L-shaped lugs for connection to various drain pipe strainers. The device defines central outside threaded sections with an enlarged nut being engaged thereon. Between the central threaded sections and both the end sections are defined smooth annular neck sections adapted to receive a resilient annular member for sealing the mouth of the drain pipe when the device is mounted to the strainer thereof. Water supplied by the hose through the bore of the device provides water pressure in the drain pipe for unclogging the same. Various adapters which can be fitted to the end sections of the device are contemplated for allowing the device to be used with further drain configurations and also with compressed air.

Abstract: A fitting for connecting together porous and non-porous irrigation tubing, threaded garden hose, and pipe with conventional pipe thread. Some openings in the fitting have both exterior male threads to engage the hose and interior compression rings to engage the tubing. Another opening in the fitting is provided with pipe threads to allow connection to ordinary threaded risers used in underground distribution systems.

Abstract: A container conversion adapter is disclosed for coupling a reservoir of hand held airbrushes to commercial liquid media containers which permits the user to utilize the commercial container as the airbrush liquid medial reservoir, thus eliminating the need to first transfer the liquid media from a commercial container to a second liquid media reservoir prior to airbrushing.

Abstract: An assembly for aligning and supporting an adapter flange for connecting fluid pressures to a pressure sensor body in place on the body and to keep the flange in an unsealed condition to prevent pressurizing the body and flange until installation of permanent fasteners. The support fasteners keep the flange oriented in its normal usable position, but the fasteners retain the flange spaced from the body sufficiently so that the flange will not seal. This will prevent accidentally pressurizing the flange and pressure sensor body until permanent fasteners have been installed. The pressure sensor body is provided with threaded openings for receiving permanent fasteners and the body and flange are shipped with at least one extra set of permanent fasteners different in length from the fasteners used on the flange to permit adding adapters for a process correction.

Abstract: A double air duct boot which includes a pair of identical opposed severable parts, joined through a central section. The two parts are geometrically symmetrical about the central section which joins the two parts. The central section includes a pair of identical halves joined at a central plane. The central section includes a pair of opposed segments of a cylinder constituting spaced, arcuate opposed side walls and a pair of opposed transverse walls joining the opposed arcuate side walls and lying in parallel planes. The central section is completed by a pair of elongated parallel end walls which extend perpendicular to the transverse walls to complete the closure of the central section. Each of the opposed severable parts includes a tapered riser section joined to the central section through an intermediate, optionally usable, arcuate duct mating section.

Abstract: An improvement in a control valve having a body, a body interior portion and plural exterior ports in communication with the interior portion. The improvement includes a plurality of dovetail-like body slots "isolated" or spaced from other slots. Each slot intersects an aperture in fluid communication with the body interior portion. A complementarily shaped, friction-retained slide-by plate is in each slot and at least one plate includes a port in fluid communication with the slot aperture. Each plate slides for removal without disturbing any other plate. A plate may be a blind closure plate, a ported plate tapped with any of several thread sizes or a "back-to-back" interface plate for supportively mounting valve bodies in tandem. A control valve system including a slotted valve body and an assortment of plates of various types provides substantially "universal" porting between the body and another valve body and/or one or more separate control components.

Abstract: Cast iron fittings are coupled with reducer fittings in a fluid handling network to reduce the flow diameter in various pipe sections of the network. Each main fitting and reducer fitting has two or more tabs about their mating open ends which are aligned and connected one to the other to maintain the fittings coupled together. Reducer fittings having standard size, large diameter ends, are provided with variously sized smaller diameter ends to selectively reduce the flow. The reducer fittings are straight-through sections useful with main fittings of various types, including Tees, elbows, right-angle bends and the like.

Abstract: A refrigerant recovery system is operative in a recovery mode to recover refrigerant from an air conditioning circuit, and in a cleaning mode to cleanse the recovered refrigerant of impurities therein. In the recovery mode the refrigerant is withdrawn from the air conditioning circuit and flowed through a filter dryer by a compressor which then forces the refrigerant through a condenser into a storage container. In the cleaning mode, liquid refrigerant from within the storage container is continuously flowed through the filter dryer and then back into the storage container. To remove impurities from within the air conditioning circuit, the recovery system is also operative in a closed loop flushing mode in which liquid refrigerant from within the storage container is continuously pumped through a portion of the air conditioning circuit, filtered, and then returned to the storage container without any appreciable quantity of refrigerant being vented to atmosphere during the flushing process.

Abstract: Nipples for use in coupling various secondary coupling components including so-called Hansen couplings are disclosed in which the nipple includes a longitudinally extending cylinder which includes an outer recess on its outer surface which is adapted for engagement with a Hansen-type secondary coupling component including a locking element for engaging the outer recess, and in which the nipple includes threads located between the outer recess and the outer end of the longitudinally extending cylinder, which are adapted for engagement with a secondary coupling component including corresponding threads thereon. The disclosed nipples are intended to be used in order to couple dialyzer or similar diffusion and/or filtration devices to different tube systems which can include coupling components which are intended for throw-away use and/or for multiple usage.

Abstract: Coupling for connecting the end of a hose or a pipe to an external threaded shaft includes a nipple and a coupling nut. The nipple has a bore extending along the length of its longitudinal axis and connects at one end to the end of the hose to be connected. An external annular groove is included and an external threaded segment is disposed adjacent such groove. The coupling nut has two end portions. A first end portion includes a first internal threaded nut segment disposed therein for threadedly engaging the external threaded segment of the nipple. A second end portion has a second internal threaded segment disposed therein for threadedly engaging the external threaded shaft.

Abstract: The invention relates to a suction box for a central vacuum system, comprising a cover part (1) designed to be mounted against the exterior surface of a wall, a counterpart (2) of the cover part, designed to be mounted inside the wall, and a 90.degree. suction bend (3) designed to bend the suction tube inside the wall to a direction parallel to the plane of the wall. According to the invention, the counterpart (2) and the auction bend (3) constitute a solid integral body (4) comprising a supporting surface (5) resting against the interior surface of the wall board, a round-shaped mounting flange (6) raised from the supporting surface and designed to be placed in a hole in the wall, and curved and elongated attachment areas (7) to which the cover part (1) can be fastened.

Abstract: A split spacer for flange fittings is disclosed which is in the form of a flat disc-shaped ring of predetermined thickness bisected along its diameter to form two separate identical semi-circular segments. In one embodiment on O-ring is installed in a groove on the circumference of the spacer which allows the spacer segments to be manually pulled part in opposed direction for installation on a coupling flange and when released, the segments assume a complete circular configuration. In another embodiment, the two segments are magnetized such that they are held the circular configuration by magnetic attraction. The segments are positioned in their engaged ring configuration on the bearing surface of a flange having one thickness such that the combined thickness will engage the bearing shoulder of a flange connector configured to normally connect flanges of a different thickness.

Abstract: A tee shaped fitting for connecting together porous and non-porous irrigation tubing and also threaded garden hose as desired in which the three openings each have exterior male threads to engage the hose and interior compression rings to engage the tubing. The fitting is closable at one or more openings with caps so that the one fitting can be used as an elbow, coupling, tee, or end cap thus avoiding the stocking or purchase of many different kinds of fittings.

Abstract: A tube seat installation device having a piping connecting part of a special coupling joint being attached on one side of the input piping opening or the output piping opening of the fluid pressure valve while at the same time having a cylindrical part of the special coupling joint fitted into a connecting hole of the tube seat via an O-ring sealing element. The piping connecting part of the special coupling joint is attached to the other side of an outlet piping opening or an inlet piping opening. The cylindrical part is fitted into the introduction part of the hollow body via an O-ring sealing element, or the introduction part of the hollow body is attached to the piping opening via an O-ring sealing element. A flange part of this hollow body is faced and fixed to another connecting hole of the tube seat via O-ring sealing element to which a fluid pressure valve is fixed by being sandwiched by the hollow body.

Abstract: A metallic or plastic nipple which has an annular external recess adjacent a circumferentially complete annular retaining rib can be separably connected to an end portion of a flexible hose by a coupling employing a sleeve having a tubular section which is receivable in the end portion of the hose. The sleeve is further provided with a set of elastic prongs which slope toward the axis of the sleeve and extend into the recess adjacent the retaining rib when the nipple is inserted into the sleeve. A permanently deformable or repeatedly expansible and contractible discrete clamping member is applied around the end portion of the hose to maintain such end portion in sealing engagement with the tubular section of the sleeve. The prongs can be integral with the tubular section or with a second section of the sleeve. The second section is form-lockingly or otherwise affixed to the tubular section.

Abstract: A check valve assembly is disclosed which is inserted in a fluid flow conduit leading from a source of fluid flow to a mechanism utilizing the fluid flow. The check valve assembly comprises a housing having an inlet port and an outlet port that communicate with a central chamber in the housing, and a valve disposed in the central chamber adapted to permit fluid flow from the inlet port through the chamber to the outlet port and prevent fluid flow from the outlet port through the chamber to the inlet port. The housing comprises a first attachment piece associated with the inlet port and adapted to be attached to the fluid flow conduit leading from the source of fluid flow, and a second attachment piece associated with the outlet port and adapted to be attached to one of several adapter elements. Various types of adapter elements are disclosed which include sections for connecting the adapter element to the second attachment piece and to the fluid flow conduit leading to the mechanism utilizing the fluid flow.

Abstract: A device is suggested for the interchangeable connection of a projecting arm section (1) to an arm (2) of an internal treatment station for can bodies. The device comprises a locking member (8), by means of which the arm section (1), such as a spray arm, for example, is detachably mounted to the arm (2).

Abstract: A modular multi-passage rotary coupling for transferring fluids in which pipes are rigidly connected with the inner fixed rings of the relevant modules by sleeves. The sleeves, after being coaxially butt-fastened at their bottom end with the pipes, enter proper bores specifically provided in the relevant fixed rings, inside which each of them is fastened under pressure by means of a closure and tight-sealing screw-threaded cap which is screwed down on a corresponding inner threading provided at the upper end of the relevant sleeve and urging, with the crown of its head, against the upper edge of the bore and also by a shoulder step jutting out at the bottom end of the sleeve and cooperating with the lower edge of the bore of the fixed ring.

Abstract: A flareless fitting includes a coupling body, a coupling nut and a ferrule. A tube is inserted so that it may extend axially inwardly a variable insertion length beyond the ferrule, through the length of a counterbore which is slip fit about the tube. Tightening of the coupling nut and the tapered arrangement causes the ferrule to be sealed between the tube outer wall and the internal cylindrical surface of the coupling body. Specifically, a single tube fitting system is provided which offers substantial tube penetration, or shallow tube penetration, without using two different kinds of fittings.

Abstract: A clamp for sealing leaks occurring between a pipe and a pipe fitting. The clamp is usable with common tee, straight, reducer, and 90.degree. elbow fittings and with various combinations of simple adapters can be used with at least two standard sizes of any such fittings. Two of the disclosed embodiments are particularly useful with flanged gate valves.

Abstract: An adaptor is set forth for assuring a hygienic position of the outlet of an appliance indirect drain conduit relative to an input of a hub drain.

Abstract: An improved locking assembly is disclosed for securing the connection between a push-on fitting having a flared end which is fitted into a cage and surrounded by a garter-type coil spring housed within the cage. The locking assembly includes a generally cylindrical coupling having a knurled outer surface and a single radial slit therein. The coupling includes at least two hinges integrally formed in the outer circumference thereof wherein at least three independent bearing surfaces are formed when the coupling encircles the connection. A multi-step circumferential recess within the coupling is utilized to accommodate variations in the external dimensions of the cage and a circular clamp or single screw are utilized to urge the single radial slit into a mated relationship such that relative axial movement of the cage and push-on fitting is restricted by radial pressure exerted by the coupling.

Abstract: An adapter fitting made of two parts, a mounting member containing a fluid cavity and a flange member having bolt holes therein, is designed to enable fluid flow components of the type which can be bolted together and provide sealing at mating faces to be used with threaded connections and bolt-on flange connections.

Abstract: A plastic pipe fitting for use in an underground water sprinkler system. The fitting design uses multi-thread internal pipe threads on various types of fittings such as elbows, T's, side outlet 90.degree. fittings and side outlet T's among other types. The multi-thread design permits at least two sizes of sprinkler heads to be connected as desired into the fitting. An improved inlet barb connection may also be used on the above fittings and on other types of pipe fittings used in the entire water sprinkler system to prevent improper clamping of connecting pipe on the inlet barbs.

Abstract: A coupling for either rigidly or flexibly connecting the adjacent ends of a pair of aligned pipes, is formed of a circular casing made of a pair of aligned, semi-circular segments which surround a resilient pipe gasket. The opposite ends of the segments have radially outwardly extending lugs which form pairs of overlapping fastening lugs. The lugs of at least one pair each have transversely aligned bolt holes and opposed sockets that are generally concentric with the bolt holes and open towards each other. A bolt extending through the sockets and bolt holes fasten the lugs together and cause the segments to clamp radially inwardly towards the pipes for coupling the pipes together with some permissible flexibility of relative movement. A plug having opposite end portions and a central bolt hole is removably fitted within the opposed lug sockets, with the bolt extending through its central bolt hole.