Abstract: A clamping jaw arrangement for a clamp system includes several clamping jaws and a fitting arrangement. The clamping jaws are coupled to an actuating device and located in a radially spreadable manner in a casing around a spreader mandrel. The fitting arrangement is configured for the spreader mandrel and formed as a star-shaped fitting, which is mounted in the casing in a peripheral area of the clamping jaws and at an inner end of the spreader mandrel. The fitting includes at least three spokes, which are radially aligned between two respective clamping jaws.

Abstract: The present invention relates to an improved coupling device for tube and that is configured with a tube and an insert that can be fixedly disposed within the tube. The insert includes at least an enlarged portion that has an annular groove thereof, and a receiving space. The tube is provided with a plurality of through holes at the middle portion or end portions. The insert can be disposed within the tube and the outer of the tube is machined to form an annular recess corresponding to the annular groove in a manner such that the insert is fixedly disposed within the tube. Wherein each of the two tubes is provided with an insert in the position to be connected, and the tubes is arranged side-by-side at the area to be connected. An enclosing element is deployed to the connecting area such that the tubes are fixedly connected.

Abstract: A pipe coupling for connecting pipes having unprofiled end sections includes an elastomeric sealing gasket for holding the unprofiled pipe end sections in a sealed manner. A clamping clip surrounds the sealing gasket. The clamping clip includes a clip strap having a first end and a second end. A first clamping jaw is formed at the first end. A second clamping jaw is formed at the second end. The clamping jaws are drawn together by a tensioning device. The clip strap has radially inwardly directed projecting flanges on each of its axial ends. A first C-shaped clamping ring and a second C-shaped clamping ring are each disposed between the sealing gasket and one of the flanges. Each of the C-shaped clamping rings are supported on a radially inner side of the clip strap. Each of the C-shaped clamping rings have projections projecting from its radially inner face and, when said clip strap is tensioned, the projections of the C-shaped rings engage in the pipe material.

Abstract: A fitting is provided for joining to a smooth exterior periphery of a tubular conduit with a seal member sealing therebetween. The fitting has a tubular body with a central passage for receiving the tubular conduit. The central passage defines a central axis for the fitting and has a tapered opening, a threaded section, a seal section and a stop which circumferentially extend coaxially about the central axis. An annular shaped seal member extends from the seal section for sealingly engaging the exterior periphery of the tubular conduit. The tapered opening of the fitting provides an entrance to the central passage which is sized for receiving and end of the tubular conduit having an oval shaped periphery, and then rounding the exterior periphery such that annular shaped seal member will sealingly engage the exterior of the tubular conduit. The seal section is disposed between the tapered opening and the threaded section of the central passage.

Abstract: A passage communication member is fitted in a first passage in a structural member, and has a head which is mounted in a slot in another structural member. The first passage in the structural member and a passage in the other structural member are held in communication with each other through a through hole that is defined in the passage communication member. Alternatively, a first engaging member is inserted in a recess defined in a structural member, and a second engaging member is retained in a slot in another structural member. When the first and second engaging members are coupled to each other by a fastening member, the structural members are firmly joined and fixed to each other.

Abstract: A telescopic pivotal pipe joint for use in a fluid transporting pipe system such as water transporting pipe system installed under the ground is disclosed. The joint has a first pipe member including a semi-spherical inner peripheral face, a second pipe member including a semi-spherical pipe portion projecting radially outward and sidable along the semi-spherical inner peripheral face of the first pipe member, the second pipe member being slidably engaged within the first pipe member, and a third pipe member telescopically sidable in an axial direction and engaged on a straight pipe portion co-extensive with the semi-spherical pipe portion of the second pipe member. The semi-spherical pipe portion of the second pipe member defines an annular groove, into which one end of the third pipe member comes into engagement along the axial direction when the second pipe member and the third pipe member are contracted maximally relative to each other.

Abstract: There is provided a common rail which can reduce a maximum stress value generated in an inner peripheral edge portion of a lower end of a branch hole and can further improve an internal pressure fatigue strength.

Abstract: To provide both a high-pressure metal piping capable of preventing the cavitation or the like or the internal fatigue destruction, as might otherwise occur at a joint head at a branch tube due to the repeated internal pressure of a fluid, and capable of eliminating a fear of corrosion even if a corrosive high-pressure fuel is employed, and a common rail to which the piping is jointed. At a joint portion of a thick steel tube having a relatively small diameter, a joint head is formed of a radially enlarged portion having a larger diameter than that of the thick steel tube, and the radially enlarged portion is formed on its inner circumference into a tapered pressure seat which is diverging outward for a receiving seat of the common rail. Preferably, a thin inner tube, as made of a corrosive metal, is fitted on the inner circumference of the thick steel tube all over the length and is terminated at the tapered pressure seat of the thick steel tube.

Abstract: The present invention relates to a pressure medium plug-in connector, consisting of two connector parts, i.e. a housing part (2) and a plug part (4), wherein the plug part (4) with a plug shaft (6), via at least one peripheral seal (10) located in an annular groove (14) of the one connector part (4) and interacting with a peripheral sealing surface (18) of the other connector part (2), can be inserted in a sealed manner into a receiving opening (8) of the housing part (2) and can be secured against release by means of a locking arrangement (12). The locking arrangement (12) is constructed in such a way that a partially plugged, prelocked position and a completely plugged, fully locked position are ensured. In the prelocked position, a seal is present which is so incomplete that, if pressure is applied with a pressure medium, a clearly limited perceptible leak, particularly in the form of an audible leaking sound, occurs.

Abstract: In order to improve a piping comprising at least one pipe and reinforcement on the outer wall of each pipe in such a way as to increase the maximum permissible internal operating pressure, it is proposed that the reinforcement should be capable of expansion along the length of the pipe and capable of contracting radially in such a way that a bias pressure can be applied to the pipe around its circumference by the longitudinal expansion of the reinforcement.

Abstract: A coupling system comprises a first coupling member having a tongue that projects axially a distance therefrom, and a second coupling member that is threadable attached to the first coupling member. The tongue is inserted within a groove disposed within a second coupling member body. The tongue is axially displaced within the groove by rotation of one of the first or second coupling member relative to the non-rotated coupling member to form a leak-tight seal therebetween. At least one of the first or second coupling member body includes a hollow passage that extends axially therethrough. An elastomeric member is disposed within the groove and is interposed between a base portion of the groove and an end portion of the tongue.

Abstract: A connector for connecting tubes or the like includes at least one main body with a connecting surface arranged thereon for the connection or flange-mounting of tubes wherein the at least one main body includes or consists of a cross-linked plastic material.

Abstract: The present invention provides an improved metal to plastic pipe transition fitting. The transition fitting basically comprises a metal sleeve having a pair of metal pipe sections attached thereto and an annular groove within the interior thereof. A plastic pipe is disposed within the metal sleeve which extends through one of the metal pipe sections. The end of the plastic pipe within the metal sleeve includes a plurality of spaced plastic retention rings and a snap ring attached thereto and the snap ring is engaged within the annular groove in the metal sleeve. At least one O-ring is disposed between the retention rings on the plastic pipe and a metal stiffening insert is disposed within the end portion of the plastic pipe within the metal sleeve.

Abstract: The invention relates to a hose coupling device, which comprises a male part connectable to a female part. The female part consists of a sleeve, which is provided with a number of resilient tongues extending in equally spaced relationship along the inner wall of the sleeve and protruding inwards form the inner wall and directed away from the mouth of the sleeve. The male part consists of a tube portion with transverse edges in its outer wall. At the insertion of the male part into the female part the resilient tongues are arranged to resiliently snap into place behind the transverse edges of the male part and hence connect the female part to the male part. The parts can be separated by turning them relative to one another to a position where the resilient tongues assume a position laterally of the transverse edges.

Abstract: A junction device for joining a tube (3) to the body of a part (2) including a cylindrical endpiece (1) belonging to the part and defining a end face (6), and a coupling sleeve (11) having a first section (12) including releasable fastener means (13) for co-operating with corresponding means (5) on the coupling endpiece (1) and having a second section (14) axially adjacent to the first section (12) and including means (15) for opposing extraction of an end of the tube (3) placed in the sleeve (11) and in abutment against the end face (6) of the endpiece (1), in which the sleeve (11) is internally fitted with a guide ring (19) for guiding the end of the tube (3), the inside diameter (D) of the ring being substantially equal to the outside diameter of the tube (3), the ring possessing a first portion (20) mounted to slide in the second section (14) of the sleeve (11) and a second portion (21) projecting axially into the first section (12) of the sleeve (11), and the endpiece (1) being provided with a groove (7)

Abstract: Lower members each have a bolt bore comprising a large-diameter portion larger than the head of a bolt in diameter, and a small diameter portion extending downward from the large-diameter portion with a stepped portion formed therebetween and having a diameter intermediate between the diameter of the bolt head and the diameter of the shank of the bolt. The small-diameter portion of the bolt bore has fitted therein a hollow cylindrical spacer with an inside diameter larger than the diameter of the bolt shank. The spacer has a lower end supported by a support member and an upper end positioned in the large-diameter portion. A hollow cylindrical elastic member is interposed between the bolt head and the stepped portion for biasing the lower member toward the support member.

Abstract: A device in a pipe coupling between a pipe end portion and a wall surrounding the pipe end coupling which is constituted by a socket, consists of a stop face device which is fixable in axial directions in relation to the surrounding wall and engages an end surface of the pipe end portion so as to define the final, fully seated position of the pipe end portion in relation to a surrounding wall of the socket when the pipe end portion is introduced therein. The stop face device becomes inactivatable subsequently to defining the position of the pipe end portion in the surrounding wall.

Abstract: The turnable connections for pipes and hoses mainly consist of connection nipples which can be linked to the end of these connections and which are partly amable as well as equipped with at least one sealing ring and a connection nipple with a union nut, with the amable tap-type connection nipple showing two ball-shaped bulged sections with different radii but the same center as well as a union not corresponding with the ball-shaped section and the overall sleeve-type connection nipple having a thread on the outer surface, which as well has a corresponding ball-shaped section with the same center M.

Abstract: A rust-resistant cylindrical metal sleeve for preventing rust and corrosion from developing around the wall of a branch hole when the sleeve is rigidly fitted into a branch hole that is drilled through the wall of a metal conduit such as a water pipeline. The sleeve has a projecting portion on its outer circumference and an inner flange portion inwardly projecting at its lower end. The metal sleeve on its outer circumference is coated with a water-absorbing swelling rubber into which a synthetic resin rubber and a water-absorbing polymer are blended. Preferably, 100 parts by weight of styrene-butadiene rubber or ethylene-propylene-dienemetylene linkage rubber is blended with 10 to 40 parts by weight of the water-absorbing polymer. Since the water-absorbing swelling rubber increases its volume as it absorbs water, pressure in the rubber increases, preventing water ingress through between the metal sleeve and the wall of the branch hole.

Abstract: A flexible coupler apparatus for decoupling vibrations, for example, along the components of an internal combustion engine exhaust system. First and second adapter members are connected together to accommodate axial and flexural relative movement between two components of an exhaust system. One or more resilient spacer members associated with the adapter members substantially preclude transmission of vibrations from one adapter member to another. Means for imparting an axial bias are provided for giving progressive resilient resistance to compression and/or extension of the coupler apparatus from a preloaded, neutral position.

Abstract: A plastic pipe adaptor (10) includes a length of pipe (12) having a plastic pipe wall (14) with a substantially rigid pipe stiffener (32) disposed inside the pipe and a substantially rigid collar (34) disposed about the pipe exteriorly of the pipe wall (14), the collar having a recess (40) therein. The stiffener (32) and collar (34) are positioned such that a portion (50) of the plastic pipe wall is disposed between the stiffener (32) and the collar recess (40) and at least a portion (52) of the pipe stiffener is deflected outwardly against the pipe wall portion (50) by an amount sufficient to wedge the pipe wall portion (50) into engagement with the collar recess (40). The result is a firm grip to the pipe which allows the collar to serve as an attachment to another member such as a mechanical joint (30). A method of making the adaptor (10) is also described.

Abstract: A pipe connector comprising a tubular pin member (1) having an outer generally frusto-conical surface and a tubular box member (2) having an inner surface corresponding to the surface of the pin member which overlies the surface of the pin member when the members are fully engaged. The central portions (3a,4a) of the frusto-conical surfaces are provided with complementary inter-engaging formations (5,6) and end portions (3b,3c,4b,4c), which are generally spaced apart, have abutting annular rings (20,21) to transfer hoop stresses caused by a pressure difference across the walls of the connector. Following wear of the connector (1,2) the rib also serves to reduce the material removed from the or each member when it is re-cut.

Abstract: A connection system for pressure resistant screwed pipe joints with a retention body, a coupling ring, a pipe and a sealing ring is characterized in that an elastomeric high-pressure seal is provided in the form of a first elastomeric sealing element placed between the face of the retention body and the sealing ring and a second sealing element placed between a face of the sealing ring facing the pipe and the outer wall of the pipe.

Abstract: A joint structure for a branch connector in a common rail, comprising: a main pipe rail having a conduit therein on its axis and a plurality of through holes formed in its circumferential wall at an axial spacing, each of the through holes having a pressure receiving seat formed on the circumferential face thereof and opened to the outside; a branch connector having a conduit to communicate with the conduit of the main pipe rail and including a joint head formed at the end thereof and forming a pressure seat so that the branch connector is engaged with the main pipe rail by bringing the pressure seat thereof into abutment against the pressure receiving seat of the main pipe rail; a joint fitting mounted on the main pipe rail; and a nut assembled in advance in the branch connector and fastened into the joint fitting against the pressure of the joint head thereby to joint the branch connector to the main pipe.

Abstract: The present invention provides a saddle-less fitting having a stepped outer wall surface. The stepped outer wall surface includes a first and second surface and a step. The step includes a first bowed band surface extending from the first outer wall surface a predetermined distance inward towards the inner wall surface. The fitting further includes an insertion portion which includes the second outer wall surface and a second bowed band surface. The first bowed band surface and the second surface are bonded to a prepared pipe with a bonding agent. A more liberal application of the bonding agent may be employed to cause the other fitting and pipe surfaces to further bond together. Once the bonding agent hardens, or becomes cured, a unitary structure is formed which provides a leak-free tap.

Abstract: A tube connector device for connecting at least one first tube which is disposed on one side of a panel and at least one second tube which is disposed on the other side of the panel, the tube connector device including (a) at least one tubular connector for connecting the first tube and the second tube, such that the first tube is attached to one open end of the connector while the second tube is attached to the other open end, (b) a connector holder for holding the connector such that the connector holder is fitted on an external circumferential surface of the above-indicated other open end of the connector, and (c) a fixture for attaching the connector holder to the panel such that the connector holder is fitted into a communication hole formed through the panel, and wherein the connector holder is made of a rubber or a thermoplastic elastomer, and includes a tubular body having an axial hole engaging the above-indicated other open end, and a flange portion extending outwardly from the tubular body in a rad

Abstract: A pipe joint has a body having a through hole defined axially therein as a fluid passage, a nut threaded on the joint body thereby connecting the pipe to the joint body, and a sleeve held against a bottom of a hole defined in the joint body by an annular step surface and having a bulging portion slanting at a predetermined angle. The nut has a radially inner pipe presser which is bent and flexed into a shape complementary to the bulging portion when the nut is progressively threaded over the joint body, for pressing an end of the pipe against the sleeve under a resilient force tending to return the radially inner pipe presser to an original shape thereof.

Abstract: An erosion resistant pipe flange assembly and a method for preventing erosion of metal pipe flanges connecting larger diameter pipe to smaller diameter pipe. The erosion resistant pipe flange assembly includes a flange section, a reducer section integrally formed with said flange section, and a replaceable liner for preventing erosion and abrasion of the interior of said pipe flange assembly.

Abstract: A device for making a sealed connection between channels which are made respectively in two components which bear on each other via at least one spacer. This device is in the form of a tubular insert 8 comprising a rigid tubular armature 9 having a length slightly less than the thickness of the spacer in the region of the channels; and at least one tube 10, made of rubber or elastic synthetic material, lining at least the ends of the armature 9 and having at both its ends a rim 11, 12 covering the corresponding end of the armature, this rim being able to be compressed, upon fitting the insert, in a sealed manner between each end of the tubular armature 9 and the corresponding component.

Abstract: A connector or coupling device for pipes of different materials and different diameters. The connector is formed by a single integral sleeve of roughly barrel shape. The two open end portions of the sleeve are defined by a narrow slightly outwardly flaring flange. The connector is further provided by at least one angular U-shaped ring having two ears adapted to receive a screw and bolt for tightening the ring.

Abstract: A method of maximizing system operating pressure capability of a selected flange joint in a fluid carrying pipeline system comprises minimizing bold load operating conditions and bolt load pre-load conditions at the selected flange joint by interposing a self-energizing seal assembly having negligible "m" and "y" values in surrounding relation to the joint's axial bore. The load producing moment resulting from connection of the flanges with the bolts is minimized by interposing a gasket element having a gasket thickness less than the seal thickness of the self-energizing seal assembly. The gasket element is interposed in a surrounding relation to the seal assembly at an outer radial location proximate to the outer flange surface margin.

Abstract: A sealing device for the sealed connection of two pipes placed end to end includes an upper component and a lower component. The upper component includes a frustoconical rib extending outward from a cylindrical end part and diverging upward into a first wall forming a return, an elastically deformable external skirt formed from a second wall connected to the frustoconical rib through the return, a circular groove defined between the rib and the skirt and formed by the first and second walls, and a retainer provided in a lower edge of the external skirt. The lower component is matable with the upper component and includes a third wall forming a frustoconical socket that flares upward, a fourth wall forming a frustoconical external skirt diverging downward, and a circular rib formed by merger of the third and fourth walls.

Abstract: A connector assembly 10 for use with tubular conduits 30 is disclosed which is a male portion that is put into a female portion. The male portion makes use of the end of the conduit itself, and the female portion only requires a stepped bore. The seal 50, stabilizing bushings areas 34 and retainer 138 are carried on the male portion. The seal 50 may be retained on the male, and the connection may be either a quick connect or require a tool to assemble. The connection may seal the highest pressures and withstand very high forces on the male and female portions. Also disclosed is the use of this connection in a multiple port device. The connection may be completed in the depth and diameter that is allotted to a "thread-in" or "flare" connection.

Abstract: A vacuum cleaner hose assembly has a corrugated, flexible hose with fittings at opposite ends for connection to the vacuum cleaner suction inlet and to a cleaning head. A tube or cable extends along the assembly for supply of cleaning fluid or electrical power to the cleaning head. The tube or cable is retained with the hose by means of a U-shape channel provided as a separate member bonded to the outside of the hose. The tube or cable extends within the channel as a loose fit so that it can move along the channel on flexing of the hose, thereby helping maintain flexibility of the assembly.

Abstract: A push-in coupling for pipes contains a sleeve body (2) and a holding means, especially with a clamping body (6), for connecting a pipe end (3, 4) to the sleeve body (2). This push-in coupling permits proper handling with little effort during assembly, and insofar as possible prevents the danger of faulty assembly. A sliding body (50) is disposed within the sleeve body (2), the sliding body (50) being made independently of the holding means. The sliding body (50) contains a striker (52) which upon insertion of the pipe end (3, 4) is pushed over an edge (60), and upon reaching a given depth of insertion of the pipe end (3, 4) strikes against a surface (62) producing a detectable signal such as an acoustical signal and/or a vibration signal.

Abstract: A pipe fitting adapted to be installed in an aperture in a wall of a fluid container, comprises inner and outer co-axial sleeve members interconnected for relative axial movement and a split, helically wound, washer. The inner sleeve member has an end portion insertable through the aperture, and the outer sleeve member has an annular bearing surface adjacent to the end portion adapted to overlie a first one of two opposed surfaces of the wall around the periphery of the aperture. The split washer is retained to and extends around the end portion opposite the bearing surface, and is of larger outer diameter than the aperture but is insertable therethrough by winding so as to overlie the second of the opposed surfaces of the wall.

Abstract: Connectors for joining protective ducts and/or hoses for the installation of insulated electrical conductors and/or cables in an aircraft are equipped with lids that are easily opened even without a tool. The lids are preferably permanently secured to the connectors. The lids are constructed as roll-up tapes or as a flat or curved plates. The curved plates are held in place in the closed condition by springs. A flat plate lid is held in place, for example by a circlip, or by a leg spring or by a hinge.

Abstract: A collet-type pipe coupling of simplified construction includes three main flange parts and a grip structure. The main flange parts are machined or otherwise formed with plain shapes. One flange is welded to an associated length of pipe or other body and all of the flanges are assembled over a separate length of pipe. A first set of bolts is tightened to compress a packing carried in the welded flange with an intermediate flange. A second set of bolts draws a flange collar towards the intermediate flange to constrict the grip structure radially into locking engagement with the separate length of pipe to complete a coupling installation.

Abstract: A main tube provided with a channel is mounted in a fuel rail and has a peripheral wall. One or more holes extend vertically through the peripheral wall and are in communication with the channel. Each hole forms a dished seat portion having either a staircase-like cross section or an inclined surface. The enlarged portion is formed near one end of the branching connector and extends to the inclined wall toward the front end. A connection head portion is formed at the front end of the enlarged portion. The connection head portion totally conforms in cross-sectional shape with the seat portion. The head portion is brought into abutting engagement with the seat portion. The engaging portions of the abutting portions are brazed and connected together.

Abstract: A hose connecting structure includes a hose whose central and engaging portion having a thermal flexibility resin which is molded by a blow molding method and a mating member which is inserted into the edge opening of the hose. The hose connecting structure further includes a ring-shaped sealing material and a first engaging portion which is disposed in the axial direction by a predetermined distance to the sealing material at either the edge portion of the hose or the mating member and a second engaging portion which is directly or indirectly engaged with the first engaging portion at either the edge portion of the hose or the mating member. Since the central and the engaging portion of the hose connecting structure includes a thermal flexibility resin which is molded by a blow molding method, the most suitable soft and hard resin for the appropriate portion can be used. When the engaging portion with the mating member and the central portion are molded integrally, the working efficiency is improved.

Abstract: A coupling assembly for leak proof connection of the ends of two lengths of pipe or tubing. One end of a first pipe is coupled to a coupling box which is connected to or integrally formed on the end of a second pipe. The coupling box has threads for engaging a nut for securing the coupling. The coupling box has a bore for receiving the end of the first pipe. The end of the first pipe has an outer tapered surface for engaging an inner tapered surface of the coupling box to form a metal to metal seal between the first pipe and the coupling box. The bore also contains an engager for coupling the nut to the first pipe. The engager includes a split ring which has a longitudinal slot. The split ring has internal circumferential projections or gripping teeth which are aligned with external circumferential projections or gripping teeth on the end of the first pipe.

Abstract: The invention relates to an articulated pipe connection for two conducting arts of a motor vehicle which comprises spherical connecting pieces for joining the two conducting parts and has at least on one connecting piece a flange-shaped connecting piece abuttable axially against the latter, said connecting piece being connected with spring tension by spring means with the other connecting piece, with the connecting pieces being held together by the spring means with a pretensioning force.

Abstract: A coupling for use with conduits (10) comprise a bi-conical fitting (20) which is inserted into the conduit end, a frusto-conical locking sleeve (22) which is located about the rearward end of the fitting (20) and compressed about the outer wall of the conduit (10).

Abstract: A pipeline is made by joining a number of pipe sections, each of which includes an inner pipe structure and an outer pipe structure. The outer pipe structure, which may be zinc plated or encased in an protective elastomeric material, includes mating couplings at each end to fasten similar sections together end to end. The inner pipe structure includes a hole extending throughout the pipeline and means for sealing around the hole at each joint. The inner pipe structure is resiliently mounted within the outer pipe structure. The outer pipe structure of each pipe section extends in both directions past the ends of the inner pipe structure.

Abstract: A connection between a building component in the form of a pipe, a mounting part, a housing or the like and a pipe-shaped line element of metal. The building component has an essentially radially extending, ring-shaped contact surface, against which a ring-shaped collar arranged on the line element is tensioned by fastening means that grip behind the collar. In the region between its inside and outside diameter, the collar has at least one axial thickening that extends ring-shaped around the axis for the line element, and that the thickening is produced by axially compressing at least one radially outward extending and at least one radially inward extending annular undulation, arranged adjacent in axial direction, of the wall that forms the collar.

Abstract: A coupling for coupling hoses comprising a pair of coupling main bodies that are structurally identical and undiscriminable for male and female. Each of said coupling main bodies is provided at the front end surface with a sealing surface for mutual abutment and at the front end with a plurality of engaging projections and engaging recesses, each of said engaging recesses being arranged between any two adjacent engaging projections, so that the engaging projections and the engaging recesses of the two coupling main bodies can be complementarily engaged with the corresponding engaging projections and engaging recesses of the other coupling main bodies. The engaging projections are provided with respective hooked anchor sections that are peripherally engaged to restrict axial movement and consequently couple the pair of coupling main bodies.

Abstract: A pipe coupling comprising a first and second pipe and a nut cooperating with the thread joint of one of the end pieces of one of the pipes by drawing against the latter a second endpiece belonging to the other pipe. A movable locking member, biased by a spring, comprises a shaped portion which in a locking position, fits onto a complementary shaped portion of the nut, thereby preventing the latter from turning in relation to the endpiece onto which it is screwed. The locking element is slidingly mounted on a support member which is fitted onto the first pipe so as to extend about the thread joint, wherein a sufficient radial distance is maintained with the latter to allow for the passage of the nut. The coupling is suitable for fitting, and even retrofitting,to standard couplings, especially of the nipple-nut type.

Abstract: An air conduit system (10) has a male air tube (22), a plurality of annular gaskets (26, 28, 30) around the male air tube (22), and a female air tube (24) receiving the male air tube (22) and engaging the gaskets (26, 28, 30) in sealing relation. The interface of the tubes is adjustable along three degrees of freedom, including a degree of freedom differentially compressing and expanding different of the gaskets such that one of the gaskets compresses while another expands.

Abstract: The invention comprises a non-weld coupling and method adapted to connect two conduits. The conduits may be pipes, hoses, valves or the like and may be cylindrical, rectangular or the like, in shape. The first embodiment relates to conduits where there may be a degree of misalignment therebetween and which the coupling is adapted to accommodate. In this first embodiment, the coupling comprises a seal flange, seal block and seal ring. The flange, block and ring have mating surfaces defining a radius of curvature which permit the components to be pivoted and rotated relative to the pipe while still maintaining a fluid or air tight fit therebetween. The second embodiment relates to the coupling of two conduit segments in substantial alignment.

Abstract: A connector for a rigid electrical conduit has an internal cylindrical socket sized to snugly receive the end of the conduit. A spring leaf detent is externally mounted on the connector body, with a free end of the leaf extending through a slot in the connector body side wall. Inserting a conduit into the socket deflects the spring leaf away from the socket axis, thereby generating a resilient stress in the leaf that enables the free end of the leaf to exert a gripping action on the conduit. The grip action can be removed by unloosening a screw that is used to mount the leaf spring on the connector body.