Abstract: A structure for preventing slipping-off of a tube in a pipe joint made of resin in which a union nut (2) is fastened to a joint body (1) to cause a pressing edge portion (19a) of the union nut (2) to abut against a diameter-increased root portion (17) of a tube (3), thereby pressing one end of the tube (3) toward the joint body (1), a recess (20) is previously shaped in the diameter-increased root portion (17) of the tub (3), the recess being smaller in radius of curvature or angle than the diameter-increased root portion, and the pressing edge portion (19a) of the union nut (2) is then caused to abut against the recess (20).

Abstract: A hose assembly is disclosed that includes a hose tube and a nipple assembly. In an embodiment of the invention, the nipple assembly includes a nipple fastener and a nipple extending from an end. A socket covers the nipple and includes a socket fastener mated with the nipple fastener for drawing the socket towards the nipple assembly. A sleeve is interposed between the covering layer and the tube and is interposed between the socket and the nipple. The sleeve includes at least one barb formed on a surface contacting the tube and a cavity formed to adjoin an end of the tube. An annular sealing member is positioned in the cavity to contact the nipple, at least one surface of the cavity, and the tube. The sleeve causes the tube to be compressed between the sleeve and the nipple, thereby sealing the hose against the nipple assembly.

Abstract: A reusable coupling adaptable to the ends of a tube, the coupling including a nipple (2) having a toothed end (7) designed to be inserted into the tube (1), its inside diameter corresponding approximately to the inside diameter of the tube, the nipple having an annular surface external to the tube. A peripheral ferrule (4) is mounted around the tube (1) and imprisons the tube in engagement with the toothed part (7) of the nipple (2). The ferrule (4) includes an inward annulus (5) which fits into a peripheral groove (6) on the surface of the nipple, while a seal (8) is provided within the groove to be contacted by the annulus (5). The ferrule (4) is radially compressible and is immobilized and fixed to the periphery of the tube (1) by a connection assembly made up of two connectable parts (9, 10) mounted around the end of the tube on either side of the ferrule, and which compresses the ferrule after it has been fitted on the tube.

Abstract: An apparatus and method of clamping a hose to a nipple using a conical adaptation of two inclined planes sliding against one another outside the hose. The force brought to bear against the surface of the hose by action of these inclined surfaces can be increased or decreased by means of threading a sleeve onto or off of the exposed threaded region of the nipple which is beyond the region enclosed by the hose. The inclined inside of the sleeve urges an inclined sheath or sheaths ever more tightly against the outside of the hose as a retaining ring is tightened onto the nipple. This in turn urges the inside of the hose ever more tightly against the nipple.

Abstract: A hose coupling apparatus for removably coupling a hose to a discharge opening of a spray unit includes an elongate hose retainer having a plug end and a stem end. The hose retainer defines a longitudinal fluid passageway extending therethrough from the plug end to the stem end. The plug end is configured for being received within the discharge opening of the spray unit. The stem end is configured for being coupled to the hose. At least one locking tab is disposed intermediate the plug end and the stem end. Each of the at least one locking tab is configured for being disposed within a corresponding slot defined by a neck which surrounds the discharge opening of the spray unit, thereby precluding rotation of the hose retainer relative to the neck. A hose nut defines a hose bore therethrough. The hose bore is configured for receiving the hose such that the hose nut is slidable over the hose.

Abstract: In the inner ring press-insertion jig for a pipe joint made of resin according to the invention, a diameter-increasing ring member in which the outer diameter can be changed to the maximum outer diameter and to the minimum outer diameter by axial movement is fitted onto a front small-diameter portion of a holder which insertingly holds a sleeve-like inner ring. A fixing structure which, under a state where the outer diameter of the diameter-increasing ring member is changed to the maximum outer diameter, positionally fixes the diameter-increasing ring member is formed between the diameter-increasing ring member and the holder in a manner that the fixation can be canceled.

Abstract: Threaded connection device for pipes including a cylindrical sleeve having, at both its ends, fasteners for the connection with a flexible pipe, two internally threaded rings each one screwing on one end of the sleeve. These said rings have a circular rim for the seaming and the compression of the pipe around the sleeve fasteners. The sleeve, in connection with the ring thread, has a thread part having a pitch multiple as to the thread pitch of the ring itself.

Abstract: A fluid coupling having a first part removably threadably connected to a second part, wherein one of the parts has a latch arm resiliently deformable by engagement with the projections incident to threading and unthreading of the first part on the second part. The projections and the latch arm have cooperating first cam surfaces and cooperating second cam surfaces arranged to engage one another and cooperating to require the application of relatively small and large forces to affect threading and unthreading of the first part relative to the second part.

Abstract: A coupling, which has a longitudinal bore for fluids to pass through, for connecting a tube to a pair of fittings that can be tightened and loosened with a wrenching tool, including a nipple positioned at one end of the coupling; a first threaded mating portion positioned at an opposite end of the coupling; a second threaded mating portion positioned adjacent the nipple; a wrenching portion disposed on the coupling having a front end and a rear end and extending above the first threaded mating portion with the wrenching portion rear end including a shoulder extending below the wrenching portion front end; and, whereby the first threaded mating portion engages one of a pair of fittings and the second mating portion engages the other of a pair of fittings.

Abstract: The present connector for liquid-conducting, plug-type connections consists of a hose nipple (2) formed on the coupling (1) and pluggable into the connecting end of a flexible plastic hose (3). The nipple has at its free end a conically widening, beveled plug edge (4) and an adjoining cylindrical shaft portion (5) with several truncated expansions (6) and (7), as well as an annular contact flange (8) at the end of the plug-in area (E) portion. The back side of the first truncated expansion portion (6) has a conical taper portion (9). Between the expansion portion (6) and the taper portion (9) an encircling groove (10) is provided, in which is embedded a gasket ring (11) circular in cross section. In order that the end of the hose or tube can be easily slipped over the nipple and the gasket ring, the surface (M1) of the first truncated expansion portion (6) outwardly at an angle .alpha. of about 45.degree.

Abstract: The present invention hose assembly (10) having a distortion limiting wall for creating a dynamic seal comprises a seal (14), a male hose subassembly (12) and a female hose subassembly (16). The seal (14) is concentrically mounted within the female hose subassembly (16) against a radially flanged segment (92) and an extension segment (94) of a female ferrule (74) with a lip (46) of a male ferrule (22) compressing against the seal (14) when the female and male hose subassemblies (16 and 12) are connected together.

Abstract: A re-usable fitting for a flexible hose includes a body and a nut that have opposed tapering ribs or barbs in complementary pairs that engage the hose substantially as the body and nut are fully tightened. The body forms a hollow nipple extending from a base portion to a head with a series of axially spaced annular barbs and has screw thread formed near the base. Inserting the nipple into an end of the hose flares the end of the hose. The nut has internal screw threads and a complementary set of opposite barbs. Tightening the nut on the nipple displaces the opposed barbs axially until aligned in complementary pairs to annularly constrict the hose. Each annular constriction is smaller than the wall thickness of the hose, both engaging the hose and displacing the hose into gaps on opposite axial sides of each annular constriction.

Abstract: A quick connector assembly has a male fitting and a female fitting. The female fitting includes a conduit having a brazed eyelet which couples with a projection member including O rings on the male fitting to seal the male fitting with the female fitting. The female fitting includes a bracket placed at the other end of the conduit to secure the female fitting in place with respect to the male fitting. The fittings are able to enable axial and rotational movement with respect to one another.

Abstract: A self-threading securing apparatus is used in combination with two tubular flow connectors to prevent the inadvertent disconnection of I.V. tubing sets. The securing apparatus includes a hollow shroud surrounding an extending cannula. The inner surface of the shroud includes interior threads for self-threading engagement with the resilient rolled-over exterior surface portion of the reseal connector.

Abstract: A resin-made detachable fitting to which a tube is connected. The fitting comprises a core of a cylindrical or ring shape forcibly inserted into the tube end to expand it, a fitting body having an inner passage, and a box nut able to mesh with ends of the fitting body and connecting the tube end to the fitting body. The fitting body comprises a cylindrical socket portion axially cylindrically extending from the fitting body ends and having an outer diameter equal to the inner diameter of the core. The socket portion has a sealing surface at its end. The fitting body further comprises a cylindrical securing portion axially extending from the fitting body ends and formed coaxially around the socket portion to form an insertions space. The securing portion has a securing wall facing the socket portion and holding, together with the socket portion, the tube inserted into the insertion space. The box nut comprises a holding surface facing the sealing surface.

Abstract: A connection system for a deformable conduit with a support portion which is inserted within an end of the conduit. The support portion has a hollow interior and an external contour with first and second surfaces. First and second portions of the deformable conduit are outwardly displaced by the first and second surface. A clamp assembly having an end piece and a sliding ring engage the first and second portions of the displaced conduit, respectively. A pressing portion is positioned over the clamp assembly and pinches the conduit against the support portion.

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: The specification discloses a lawn and garden sprayer having a hose compression connector for coupling a dispensing hose to a supply tube inside the liquid-containing dispensing tank. The hose compression connector comprises a threaded boss projecting from the dispensing tank, a hose adapter having a raised annular shoulder, over which the dispensing hose extends, located at the dispensing-hose receiving end thereof, and a threaded nut having a knurled exterior for easy gripping and an interior, annular compression surface, whereby the hose is clamped between the compression nut and the upper annular surface of the shoulder, and between the boss and the lower surface of the shoulder.

Abstract: In a pipe connection, in particular for plastic pipes and hoses (2, 9), having a support portion (6) disposed in the interior of the pipe to be connected, and a clamping means (4, 5, 21, 22) which is provided on the outside of the pipe and which comprises a sealing portion (4) and a pressure-applying portion (5), the sealing portion (4) is made from a yielding material, preferably plastic material, and the pressure-applying portion (5) comprises metal, the pressure-applying portion (5) externally surrounding the sealing portion (4).

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 connector for a flexible pipe comprises a unitary sleeve having an end portion for coupling to a flexible pipe. The coupling end portion includes an annular threaded projection, a cylindrical portion adjacent the projection, and a frusto-conical portion adjacent the cylindrical portion, with the frusto-conical portion tapering from wide to narrow toward the pipe. The frusto-conical portion has its widest portion adjacent the cylindrical portion and has a diameter greater than the diameter of the cylindrical portion and forms a radially extending shoulder therewith for permitting a first end portion including an outer edge of the pipe that is slipped over the coupling end portion beyond the shoulder to bend radially inwardly toward the cylindrical portion, thereby securing the pipe to the sleeve against an axial force directed away from the sleeve.

Abstract: A fluid conducting connector for use in water connections particularly water heater connectors. The connector assembly is designed for mating connection to a galvanized nipple for reduction of galvanic corrosion between dissimilar metal connections. An insulator sleeve is seated within the connector to maintain separation between the galvanized nipple and the copper tube of the assembly. The connector assembly includes an internally threaded female connector mounted to the copper tube for connection to the nipple. The insulator sleeve includes a tubular body and a radial flange. The body of the sleeve extends partially into the copper tube while the flange seats within the female connector acting as a washer for the assembly.

Abstract: An electrically insulated tube union includes a pair of tube fitting assemblies and an electrically non-conductive connector. Each tube fitting assembly has a fitting body, a fitting nut and a threaded ferrule. The connector has a body with an external radial flange between the ends thereof. The connector body is externally threaded on either side of the flange and the threads are axially spaced from the connector ends. The ferrules threadably engage the connector threads and are captured between their respective fitting nut and body. Each ferrule has a tapered end with an unthreaded portion that seats in a frusto-conical portion of the fitting body so that when the fitting nut and body are threadably engaged the ferrule unthreaded end grips the unthreaded connector ends to provide a fluidtight and electrically insulated coupling between the pair of tube fitting assemblies.

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 connector specially suited for coupling soft resilient hose, in particular polyurethane hose, includes complementary male and female members defining a pair of concentric and generally parallel conical surfaces which receive therebetween the end of the hose to be engaged. At least one sharp circumferential barb is fixedly positioned along the conical surface of the male member to bite into the inner sidewall of the hose, to thereby effectively prevent the hose from slipping off the connector during assembly or subsequent use. The two complementing members are also provided with a pair of cooperating annular shoulders which abuttingly engage when the two members are joined together, to position the conical surface of the male member completely within the female member and thereby eliminate the danger of cutting and for damaging the hose along a projecting edge of the connector.

Abstract: A metal connector for the end of an internally and externally plastics coated metal tube maintains the metal of the tube, for example aluminium, out of contact with the metal of the connector, for example brass, and thereby avoids problems of anodic corrosion. This is achieved by forming the male portion of the connector with a tapered shank over which the tube end is forced for connection, and a shoulder to act as a stop for the tube end, the shoulder being of such relatively shallow radial depth that it abuts the internal plastics coating but not the metal of the tube. In another aspect of the invention, a second shoulder radially outward of the inner shoulder abuts the outer plastics coating and the two shoulders are radially separated by a radial groove that thereby prevents contact between the end of the metal tube and the metal connector.

Abstract: A pipe joint in which a force for retaining a semirigid plastic pipe to a joint body is provided in such a manner that an outward expanded portion of the pipe which is formed by inserting an annular shape-retaining member which does not obstruct the flow of fluid into the pipe is connected to the joint body by a box nut. This pipe joint portion is formed by employing an apparatus having a clamp for temporarily fixing the pipe at one end of a base arm, a grip portion disposed at the other end thereof, a toggle lever pivotally attached to the grip portion, a sliding rod engaging at its one end with an end of the toggle lever and capable of moving to the left and right while being supported by a guide base attached to the base arm. The shape-retaining member is inserted into the pipe by this sliding rod.

Abstract: A fitting assembly for a hose comprising a nipple having a plurality of spaced separate annular barbs thereon adapted to dig into the internal wall of a hose and threads remote from said barbs for coupling the nipple to a socket. A socket is provided which includes internal threads for threading engagement to the threads on said nipple and spaced internal annular teeth adapted to bite or dig into the outer wall of a hose thereby crushing and clamping a hose between the barbs and teeth and filling the space between the nipple and socket adjacent the barbs and teeth when the socket is threaded to said nipple. In this manner, the socket is retained to the nipple separate from the seal provided between the nipple, socket and hose and oil cannot leak past the barbs and teeth.

Abstract: Twin seals are provided between an end fitting and a convoluted hose connected thereto. The end fitting has two parts, one of which terminates in an elongated member having large and coarse threads on the outside thereof. As the elongated member is turned into the end of the hose, convolutions at the end of the hose are either scrunched and squeezed together or stretched over a ramp section. One of the seals is along the surface of the large threads and the other is a result of the end thrust either the scrunching and squeezing or the stretching of the end convolutions. A pilot end of braid on the hose pulls it to increase the end thrust. In some embodiments, a third seal is made between the outside surface of the hose and a gland surrounding the hose.

Abstract: A tube connection having a resilient seal ring captured between a support structure at the inner end thereof and a retaining structure at the outer end thereof within an outwardly opening recess of a fitting body. The support structure is retained to the distal end of the tube to be connected against axially inward displacement therefrom. Close fits are provided between the elements of the fitting so as to effectively preclude extrusion of the seal material therebetween from the sealing space. The retaining structure in certain embodiments is defined by an annular projection on the nut member extending into the recess. In certain embodiments, the retaining structure is disposed outwardly of the recess and the sealing sleeve extends outwardly into engagement therewith. In one illustrated embodiment, the sealing sleeve is defined by an O-ring. In a number of the embodiments, the support structure is formed integrally with the tube end.

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 reusable type hose end fitting comprising a through-bored stem portion and a ferrule portion which is removably screw-coupled to the stem portion. The stem portion has a first zone which is formed with a male screw thread and a second zone which locates within the bore of a hose. The ferrule portion has a first zone which is formed with a female thread for engagement with the male thread of the stem portion and a second zone which locates about the second zone of the stem portion to define a generally annular space in which an end portion of the hose locates when the fitting is assembled to the hose. The second zone of the stem portion is formed with four tapered regions and with cylindrical lands which separate adjacent ones of the tapered regions.

Abstract: An end fitting for a flexible metallic conduit comprises a tubular body having an external thread to enable the body to be screwed into an end of a conduit, a tubular sleeve having an external thread to enable the end fitting to be threadedly mounted on a support, and a rotary tubular collar threadedly mounted on a stationary projection of one-piece with the body. The collar has an inner circumferential tapered surface which bounds a wedge-shaped annular space with the externally threaded end of the body. The conduit is received in wedged, moisture-resistant engagement in the space. A stressed O-ring seal between the sleeve and the stationary projection provides another moisture-resistant seal.

Abstract: A hose coupling for use with a faucet, including an upright rod which is adapted for vertical motion in response to the water pressure in the hose. When the water pressure in the hose is normal, the upright rod moves to the upper limit of its range of travel, and slightly projects upward beyond a valve seat, pushing up a steel ball valve, and allowing the water to be discharged from the hose tip. If the water pressure in the hose increases abnormally, the upright rod retracts downward and allows the ball valve to fit on the valve seat.

Abstract: The invention relates to unions for tubes adapted to hermetically connect a smooth end of a tube on a connecting piece comprising a flared end. These unions comprise an anchoring and sealing ring which is constituted by an annular lip incorporated in the body of the union and which presents, in its rear part, at least one peripheral recess which is adapted to facilitate the flexion of the lip towards the axis.

Abstract: A resuable liquid-tight connector for flexible liquid-tight electrical conduit comprises a body member and a compression member which cooperate to simultaneously grip the conduit radially by means of an eccentric action and compress the conduit axially into a sealing seat by means of an axial camming action.

Abstract: A hose coupling subassembly comprising a nipple with an enlarged head at one end, an external thread for attaching a socket to the nipple, and a groove between the head and thread. The subassembly includes a nut with an inturned flange engageable with the head for clamping the head against a part to which the hose coupling is to be attached. The bore of the nut flange is greater in diameter than the thread so that the nut may be assembled to the nipple by sliding it over the threaded portion. The nut is retained on the nipple by a washer extending into the groove.

Abstract: A tire valve core including a metallic shell having a seat thereon for a plastic gasket, the seat extending between a peripheral bead including a perpendicular wall portion on the inner face thereof and an annular rib having an inwardly tapered peripheral surface and a perpendicular shoulder on the inner face thereof; the seat being provided with a plurality of annular grooves spaced inwardly from said rib and extending over approximately 50% of the seat width and with the remainder of the seat providing an inwardly tapered smooth surface.

Abstract: A fastening means, such as a hose end fitting comprising a metallic member formed with a serrated surface, and a layer of polymeric material arranged to cover the serrated surface, the surface of the layer of polymeric material both facing and remote from the serrated surface being capable of conforming substantially to the shape of the serrated surface.