Abstract: A pipe coupling for coupling together two lengths of pipe comprising first and second collars or flanges secured to the ends of the lengths of pipe and having joining surfaces thereon which abut one another on securing the lengths of pipe together,radially aligned grooves are formed in the joining surfaces for receiving a seal which includes a rigid first seal component and a flexible second seal component bonded to the first seal component,the seal extending partially into both grooves to seal between the joining surfaces of the collars.

Abstract: A pipe coupling includes first and second coupling shells, each of which shells define a semicircular cross-section, and first and second longitudinal flanges, and wherein the shells are hingedly coupled together about the respective first longitudinal flanges. Fasteners secure together the second longitudinal flanges to enclose two longitudinally-spaced sections of pipe with a generally cylindrical housing. The first coupling shell further defines a port extending radially therefrom into which a grommet is preferably disposed. The grommet defines a normally-closed aperture for passing a needle therethrough for injecting a chemical, such as a disinfectant, into fluid, such as water, in the pipe.

Abstract: A composite sanitary fitting in which an inner body portion is secured within a overmolded stiffening sleeve which provides strength and rigidity to the fitting. The main body is comprised of a plastic such as PFA and the outer stiffening sleeve is comprised of a more rigid durable plastic such as PEEK. The main body portion has a flange portion which at the connecting end. The stiffening sleeve has an U-shaped portion extends around three sides of the flange locking the sleeve on the body portion.

Abstract: A synthetic resin corrugated pipe includes a pipe wall having an annularly- or helically-shaped convex-concave surface. The convex-concave surface has a plurality of convex portions having a quadrangular cross-sectional shape and a plurality of concave portions having a circular cross-sectional shape.

Abstract: A flange structure formed from a plurality of joined flange segments is provided. The joined flange segments form a generally circular opening for a conduit. The generally circular opening has a perimeter formed from a first surface segment having discrete teeth and extending in a direction generally perpendicular to the faces and a second surface segment tapered toward one of the faces. The flange structure can be connected to a substrate by fasteners extending through two oval shaped openings connecting the two forces. At least one shim is attached to the flange segments about the circular opening. The shim has an inner surface with essentially the same surface configuration as the generally circular opening of the flange segments.

Abstract: A pipe coupler for interconnecting pipes and components together, for transferring bulk and fluid materials, and useful for connecting sections of pipe-end-to-end. The coupler connects grooved pipe to ground pipe, smooth pipe to grooved pipe or smooth pipe to smooth pipe. Also tees, valves, and pipe sections can be secured together. The coupler has an adjustable bail that can be adjusted to assure a tight seal despite any wear. The coupler also eliminates any gaps that may trap material and lead to cross-contamination of subsequent loads.

Abstract: The device contains a tension chain with link plates (10) and thrust pieces (7) which are joined to one another via joints (9). Each thrust piece (7) has two flanks (5, 6) for abutting flanges (1, 2) of the pipe connection. The first of flanks (5) is tilted to plane (E1) which is perpendicular to the axes of joints (9) at a first angle. Second flank (6) with this angle forms a second smaller angle. The second angle can be equal to zero. Furthermore, the device contains tensioning device (21) for drawing two adjacent joints (9) against one another. Tensioning device (21) is arranged such that tensile forces (A) exerted by it run on the side of plane (E1) which faces away from second flank (6). Plane (E1) is perpendicular to the axes of joints (9) and passes though edge (B) of first flank (5) which is nearer second flank (6). The device is suitable for flanges (1, 2) which are differently conical or of which one (2) can also be flat externally.

Abstract: An all plastic spray nozzle attachment is provided to avoid corrosion problems, with a self-adjusting fastener system which minimizes or avoids bending stresses on the securement screw that joins the free ends of the two hinged clamp arms that embrace the support pipe. Both the head and nut ends of the screw and the respective abutting surfaces of the clamp arms are provided with arcuate abutment surfaces which permit rocking movement of the head and nut portions about axes generally parallel to the longitudinal axis of the support to readily maintain the head and nut in coaxial alignment with one another, thereby relieving bending stresses on the screw shank as the fastener is tightened to draw the arms toward one another into clamped position.

Abstract: A pipe joint for connecting water supply pipe together and which utilizes compression seals between the pipe and the joint, and is comprised of a holding housing having a band body that surround a seal ring and a holding ring. A locking bolt is threadably tightened onto the holding housing. The seal ring is embedded and sealed within outside surface of both ends of the separated pipes after the locking bolt is threadably tightened. The holding ring is positioned to engage and become fully engaged within the groove at each of outside of the separated pipes, and hold the separation pipes against being easily separated after the locking bolt is threadably tight-end onto the holding housing.

Abstract: A clamp with a live loading clamp nut assembly is provided for pipe joints and the like. The nut assembly includes a body member movable within a cage. A plurality of springs, such as spring washers, are employed in the cage to provide a stored spring energy to maintain the clamping pressure in a desired range. The clamping arrangement preferably includes a pair of jaws, hinged together at one end so that the other ends of the jaws are moved toward and away from one another. The nut assembly presses the free ends of the jaws together to maintain a desired tightness in the pipe joint.

Abstract: A pipe coupling device for coupling the peripheral flanges of a pair of pipes together, including a pair of retainers with gripping grooves therein for receiving portions of the peripheral flanges of the pipes. The gripping grooves of the retainers have a unique inner surface with a pair of slanted gripping surfaces and a pair of non-gripping surfaces that are located within the outer envelope of the peripheral flanges. This provides for lightweight, compact retainers. The retainers are pivotally coupled at one of their ends by a hinge assembly and releasably coupled at their opposite ends by a latch mechanism. The hinge assembly has at least two links pivotally coupled at one of their ends to one of the retainers by a first pivot pin being received in a pivot slot formed in the retainer and pivotally coupled at their other end to the other retainer by a second pivot pin being received in a pivot slot formed in the retainer.

Abstract: An annular clamping flange for use in clamping a first pipe end portion to a second pipe end portion in an engine exhaust system, has first and second arcuate flange portions co-operable to form a pipe receiving aperture, each flange portion having at least one clamping bolt receiving aperture with a longitudinal axis parallel to the longitudinal axis of the pipe receiving aperture. The annular flange having an outer periphery of generally parallelogram shape with a pair of opposed acute angles and a pair of opposed obtuse angles, the parallelogram shape having rounded corners, one flange portion providing one side and portions of sides of the parallelogram shape adjacent thereto, and the other flange portion providing the opposite side to said one side and the other portions of said adjacent sides, each flange portion having a connecting bolt receiving tubular lug on each said adjacent side portion thereof.

Abstract: A pipe connecting structure is provided to mutually join tubes, and includes a pair of flanges formed at end surfaces of a pair of pipes to be connected so as to be opposed to one another, a back-up ring interposed between the pair of flanges, a projection of the back-up ring into which the pair of flanges are fitted, and a rubber packing provided for an inner periphery of the back-up ring to be expanded and deformed in response to internal pressure of the tubes. In the pipe connecting structure, the pair of flanges are brought into pressure contact with the rubber packing and the pair of pipes are coaxially supported by clamping a housing by clamping measures.

Abstract: A pipe coupler for interconnecting pipes and components together, for transferring bulk and fluid materials, and useful for connecting sections of pipe-end-to-end. The coupler connects grooved pipe to ground pipe, smooth pipe to grooved pipe or smooth pipe to smooth pipe. Also tees, valves, and pipe sections can be secured together. The coupler has an adjustable bail that can be adjusted to assure a tight seal despite any wear. The coupler also eliminates any gaps that may trap material and lead to cross-contamination of subsequent loads.

Abstract: A coupling device is provided for coupling peripheral flanges of first and second pipes. The device comprises first and second arcuate retaining members, coupling structure and a latching mechanism. The coupling device is capable of being initially set via the latching mechanism so as to permit the coupling device to securely couple two pipe flanges of a given diameter. After being initially set, the device is capable of being easily and quickly disassembled and reassembled about the peripheral flanges of the two pipes.

Abstract: A double acting pneumatically operated pumping assembly for pumping viscous fluids, especially food stuffs, is provided. The piston has an enlarged central portion integral with reduced diameter end portions. Inspection means, for example vent ports, are provided between seals of each end portion so that any leakage of either pneumatic fluid or of viscous fluid is detectable. The pump is preferably of modular form, each module having flanged ends and hand-tightenable band clamps holding the flanges together for easy assembly and disassembly. A feature of the invention is an operating valve having pilot chambers at each end for control of the spool position. Movement of pilot pistons within the pilot chambers affects the pressure balance between ends of the spool. Changes in pressure may be derived from the piston chamber of the pump from ports located to change the pressure balance of the valve when the pump piston has completed its stroke.

Abstract: A pipe coupling device for coupling the peripheral flanges of a pair of pipes together, including a pair of retainers with a V-shaped groove therein for receiving portions of the peripheral flanges of the pipes. The retainers are pivotally coupled at one of their ends by a hinge assembly and releasably coupled at their opposite ends by a latch mechanism. The hinge assembly has at least two links pivotally coupled at one of their ends to one of the retainers by a first pivot pin and pivotally coupled at their other ends to the other retainer by a second pivot pin. The pivot pins are separated from each other such that the links of the hinge assembly straddle the peripheral flanges of the pipes. This arrangement provides more uniform pressure at the ends of the retainers since the moment resulting from the offset of the hinge assembly is moved closer to the circumferential loading line between the retainers and the flanges of the pipe.

Abstract: The present invention relates to a conduit system comprising a plurality of conduit elements wherein adjacent conduit elements may be connected together by a coupling means in flexible yet fluid tight fashion. This coupling means may provide a fluid-tight joint despite variations of temperature to which the conduit elements may be subjected. The conduit system may be conveniently used for joining conduits used for feeding water to the turbines of hydro-electric plants. The coupling means may comprise annular rings or flanges fixed on the periphery of each of the pipe ends to be joined together, the annular rings having upwardly and inwardly extending side walls. An annular-type gasket formed of a resilient material may be positioned around the periphery of the rings (e.g. in a bridging relation with same), the annular gasket being positioned in a substantially co-axial alignment with the longitudinal axis of the conduits.

Abstract: A device for forcing two conical flanges (1, 2) of a pipe coupling together under pressure with a seal (3, 4) between them, comprises a clamping chain with several straps (23) joined together by hinges (10). Thrust pieces (9) each have two flanks for contacting the two conical flanges (1, 2). Each thrust piece (9) is pivotably supported on a respective one of the chain hinges (10) and has on each of its two flanks two spaced supporting zones (16) for contacting the two flanges (I). The position of the thrust piece (9) is thus precisely determined by the support on the chain hinge (10) and the contact with the flanges (I) by the two supporting zones (16). The thrust piece (9) need not transmit any tensile forces in the clamping chain, and it can be small and lightweight.

Abstract: A coupling assembly for fluid carrying tubes in a gas turbine engine include first and second fittings fixedly joined to respective ones of the tubes. The first and second fittings include respective first and second mating flanges which are joined together by a clamping band which is adjustable therearound. The first and second flanges include oppositely facing first and second flat faces, with the first flange having a counterbore extending inwardly from the first face, and the second flange having a pilot tube extending outwardly therefrom for being inserted into the counterbore. An annular seal is disposed between the first and second fittings for providing a leak-proof coupling upon clamping together of the two fittings by the clamping band.

Abstract: A coupling assembly includes a first coupling element having first and second ends and a second coupling element having first and second ends. A first structure secures the first end of the first coupling element to the first end of the second coupling element. A second structure secures the second end of the first coupling element to the second end of the second coupling element. The second structure includes a latch pivotally and slidably mounted on the second end of the first coupling element and an eyebolt pivotally secured to the first coupling element second end. A nut is selectively threadable onto a threaded end of the eyebolt. A construction is provided which prevents an incorrect installation of the second end of the second coupling element in relation to the latch. The construction can take several forms including a reduced width slot on the latch or protrusions extending into the slot from at least one of the sides of the slot toward the other side thereof.

Abstract: A coupling for joining a pair of conduits, one of the conduits having a flared end and the other of the conduits having a circumferential flange with a surface conforming generally for mating with the flared end of the one of the conduits. The coupling comprises a first annular ring positioned about the one of the conduits and having an inner diameter less than an outer diameter of the flared end and a radially inner surface adapted for engaging an outer surface of the flared end. A second annular ring is positioned about the other of the conduits and has an inner diameter less than an outer diameter of the circumferential flange and has a surface adapted for engaging a surface of the flange. A split ring circumscribes the first and second rings and has a radially inner, generally V-shaped groove for simultaneously overlapping both the first and second rings.

Abstract: The spring includes a composite elastomeric body having in one embodiment a closed end and an open end. A coil spring is embedded both within the body wall and the closed end, and provides reinforcement of both the body wall and the closed end. The body may be of cylindrical, conical, or other shape, depending upon the required function of the spring. It may also take an essentially hourglass shape or the shape of a cylinder flanged at both ends. Alternately, the spring may be internally pressurized to provide load leveling or air spring effects in addition to the variable rate load versus deflection curve normally obtained. The body may be attached directly to any surface to create an airtight seal. Alternately, a closure plate may be provided to seal an open end of the coil spring.

Abstract: A clamp for hoses, pipes and the like which incorporates an open diameter lock for maintaining the clamp at a selected diameter despite shipping and other stresses, and for preventing the clamp from opening-up beyond the "full-open" diameter. The open diameter lock of the present invention will not interfere with further tightening of the clamp, and it serves to give a visual gauge of the nominal open diameter of the clamp.

Abstract: A clamp for joining a pair of elements having generally circular flanges, the clamp including an inner flange engaging portion arranged to provide generally axially extending forces to said flanges for retaining them against one another when substantially radial forces are applied to the inner flange, an outer circumferential strap element and at least one bolt. The clamp also includes a coupler engaging the strap element adapted to provide substantially circumferential tension thereto, whereby substantially radial forces are applied to the inner flange without urging non-circumferential bending of the strap element.

Abstract: A chain intended for pipe flange connections comprising successive, cross-sectionally U-shaped chain links 8, which are hinged directly to each other and form a ring sector-like contact area 14, 15, 17 and 18. At the contact point of the chain links 8, following on to the eye ring 9, an interstice 13 is provided. Moreover, an interstice 11 is likewise provided between the two flanks 31, 32 of the U-shaped chain links 8 and the two pipes 1, 2 to be connected. The contact points of the chain links 8 are designed as level annular segmental contact surfaces 17, 18 and rest on the likewise level, chamfered outer surfaces 14, 15 of the pipe flanges 3, 4.

Abstract: A coupling for pipes having confronting ends with conical or flat outwardly extending flanges utilizes an elastomeric sealing ring which is placed between the flanges and a variable-diameter clamping device which is positioned to surround the flanges and has two radially inwardly divergent sidewalls each of which is adjacent the exposed side of one of the flanges. The conical radially inner portions of the sidewalls engage and penetrate into the external surfaces of the pipes in response to a reduction of the diameter of the clamping device, and any further reduction of the diameter entails a movement of progressively larger parts of radially outer portions of the sidewalls into engagement with the exposed sides of the adjacent flanges to bring about radial compression of a large portion of the sealing ring.

Abstract: A pipe coupling is provided having a pair of arcuate housings each provided with a crescent groove and a crescent protrusion formed on an abutting end surface of the arcuate housings in the positions which is symmetrical to each other around a vertical axis and is offset from a transverse central axis. When the arcuate housings are tightened by bolts and nuts, the crescent protrusion is inserted into the crescent groove, thereby causing skewed movement of the arcuate housings around the vertical central axis of the pipe coupling in adverse directions to the predetermined angular positions. Thus, upon completion of tightening by the bolts, excessive tightening by the bolt is prevented due to mutual contact of the abutting end surfaces of the arcuate housings.

Abstract: A conduit elbow assembly has a radially split outer housing and a replaceable liner. The liner fits loosely within the housing so that material flowing in the elbow accumulates in the void formed in the housing. The hardened liner is thus reinforced, rendering both inner and outer liner hardened surfaces usable in resisting abrasive attack prior to liner failure. A removable housing member exposes the liner for cutting during replacement. Holes in the outer housing permit leakage of fluent material upon liner failure, thus indicating the need for repair prior to conduit rupture. The assembly is adaptable to accommodate varying pipe dimensions within a particular nominal pipe size.

Abstract: An improved clamp and clamp supporting apparatus includes a clamp of semicircular arcuate segments with enlarged ear portions having bolt studs positioned thereon in a staggered pattern. Through holes are drilled in the ear portions in a complementary pattern to receive the bolt studs of adjacent clamp segments with nuts threaded thereon to secure the clamps around abutting clamp hubs and maintain the hubs in sealed relationship. One of the clamp hubs has paired guide rods extending therefrom on opposite sides engaging mating holes in the clamp to allow positioning the clamp in a desired position without requiring additional support means.

Abstract: A fluid conduit composed of: two pipe sections each having a longitudinal axis and a connecting end, each pipe section including a cylindrical main portion, an annular flange located at the connecting end and extending radially outwardly from the main portion, and a thin annular disk located at the connecting end, extending radially outwardly from the flange and having an outer periphery, the pipe sections being assembled together at the connecting ends with the disks in contact with one another; and a mass of welding metal sealing the outer peripheries of the disks together.Such a connection can be broken by cutting off outer peripheral regions of the disks along a circular cutting line.

Abstract: Connector for quick release under load, particularly for pipes for transporting fluids such as hydrocarbons, characterized by the fact that it comprises, between two opposite structural elements (1, 2) or between two parts of an element connecting the two structural elements, at least a connecting device comprising an internally shaped annular ring (7) consisting of at least two segments of complementary shape, a rod (4) equipped with an outside shaping corresponding to the inside shaping of the ring, engaged internally in said ring and extending over at least a part of its height and an annular sleeve (6) engaged on said nut and able to be moved axially in relation to it under the effect of an actuating element, such as a cylinder (12) acting directly or indirectly on said sleeve.

Abstract: A pipe connector, in particular for high-purity gases and ultra-high vacuum or high-pressure systems, is provided with two end-pieces each having a coupling extremity. The connector is also provided with a special seal and a sleeve for maintaining the two end-pieces in the line of extension of each other in a first stage of assembly. Two half-shells are provided for longitudinal locking of the connector in a second stage of assembly.

Abstract: What has been described in its simplest form is a coupling segment, which when used in conjunction with a like coupling segment, provides a coupling for use in securing the juxtaposed ends of pipe, such pipe having grooves encircling their ends. There is also provided a coupling for the holding of pipe ends and a method of securing pipe to form a pipeline.

Abstract: A hub clamp will be used to connect two conduits together in end-to-end relationship. Each conduit has a pair of generally parallel load shoulders that extend around the conduit and are axially spaced from each other. The clamp has two sets of load shoulders, one for engaging each set of load shoulders on each end of the conduit. The clamp is in two halves, and when bolted together, draws the ends of the conduits toward each other. Each load shoulder is separated by a flank. The two flanks of the mating load shoulders are separated by a gap when fully made up. The first load shoulder of each conduit has multiple angled sections. The lead section is at a greater angle than the load section relative to a plane perpendicular to the longitudinal axis of the conduit. The clamp will be mounted releasably to an upper conduit so that it can slide inward and outward, for vertical conduit applications.

Abstract: A device for jointing or closing pipe ends and comprising a single or double-ended rigid or semi-rigid tubular body (10) adapted to retain and protect a single or double-ended elastomeric sleeve (12) with a resilient annular collar (13) protruding from the body at the or each end. The sleeve (12) surrounds the pipe to be joined or closed, and a clamping ring consisting of a pair of semi-circular segments (14) is closed around the collar (13) with bolts (15) and diametrically opposed wedge-like members (18) which are in sliding engagement with the internal surfaces of the clamping ring segments (14) thus to be forced inwardly together with the latter when the bolts (15) are tightened. This ensures a substantially unform radial compression of the collar (13) around the pipe wall.

Abstract: A pipe coupling for encircling and coupling aligned pipe ends is formed of aligned arcuate segments that are fastened together. The segments are hingedly connected together at adjacent ends by means of a hook formed on the end of one segment and a hook receiving loop formed on the corresponding end of the other segment. The loop forms an elongated rectangular opening defined by a pair of radially outwardly extending legs, that are joined to the segment and an axle connecting the legs. The hook has a similar cross section, but is loosely fitted within the opening. A depression is formed in the axle, at one leg, and a correspondingly aligned depression is formed in the segment wall adjacent the opposite leg. The hook has a projection which normally prevents the hook from withdrawal from the loop opening when the hook is pivoted relative to the opening.

Abstract: A segmented pipe coupling provides a housing for a butterfly valve, and preferably is provided with oppositely angled end faces of saw tooth configuration at the respective ends of the coupling segments, thus allowing the inclined end faces to emerge at the axial end faces of the coupling at or closely adjacent to the X,Z plane of an axially long coupling. A slow motion rotary drive for the butterfly valve also is provided.

Abstract: A pair of frame members are secured to the ends of a pair of ducts having a generally circular or arcuate configuration. Each frame member has the same generally circular or arcuate configuration and has an inner vertical wall and an outer vertical wall. The outer vertical wall is connected to a sloped rigidifying portion which extends outwardly from the inner vertical wall. Both the inner and outer vertical walls have horizontally extending flanges which are in abutting relation and their end portions are clampingly engaged. The frame members have a circumferential or peripheral dimension less than the circumferential or peripheral dimension of the duct member so that at least one gap is formed in the circular or arcuately shaped frame member. The frame members are positioned on the duct end portions by inserting the frame member flange portion inside the duct end portions with the top surface of the frame member upper flange abutting the underside of the duct.

Abstract: Each end fitting of the union has an end for fixing the fluid line, and a coaxial metallic body terminating in an annular radial polished section where the internal bore of the union issues. A washer made of a deformable synthetic material is pressed on this metallic body and has a flat annular radial face which, together with the polished section, forms the free face for connecting the end fitting. A cylindrical metallic ring accommodates internally with a contact fit the two washers and a portion of the two metallic bodies, so that the two free connecting faces come to be opposite each other. Two clamping half-shells grip the two end fittings to ensure the connection of the fluid lines.

Abstract: A frangible, circumferentially contractible clamp operated by a band constricting actuator for securing a pair of flange end pipe members in aligned end-to-end relation. The clamp includes a band consisting of retainer halves which are fastened together by frangible fasteners to form an envelope adapted to embrace and secure the aligned flanges together upon tightening of the actuator. Upon the associated pipes being subjected to exceptional tensile or bending forces, the fasteners will fracture permitting the retainer halves to separate to allow the flanges to separate and prevent the pipes from being damaged.

Abstract: A joint connection for abutting first and second flanges, particularly the annular flanges of a jet engine and exhaust nozzle, comprises a transverse lip formed on the second flange which overlies the first flange when they are axially engaged. A C-shaped clamp extends over the upper half of the abutting flanges having spaced clamp arms which straddle the flanges so that one clamp arm faces the first flange and the other clamp arm faces the second flange. A locking spring is positioned between the first flange and the adjacent clamp arm, and the facing surfaces of the locking spring and first flange are formed with mating wedge lock elements extending outwardly therefrom. The locking spring is movable to a locked position relative to the clamp arm and first flange wherein the mating wedge lock element of the locking spring and first flange engage one another and force the locking spring against the adjacent clamp arm.

Abstract: A multiple walled metal chimney formed of a plurality of axially joined chimney sections each of which utilizes positionally captured spacer rings. Joint clamps are used to connect the chimney sections for formation of the complete chimney conduit. The spacer rings are positionally captured between annular shoulders formed in the inner and outer walls of the chimney sections to eliminate welding of the rings. The rings may include an expansion joint to allow circumferential expansion and contraction of the ring with the walls.

Abstract: A sealing plate, divided into a first upper section and a second lower section, the sealing plate having a bore therethrough slightly larger than the diameter of the casing around the internal pipe. There is further provided a attachment members on the wall of the upper and lower sections of the plate, for attaching the sections of the plate and allowing the sections of the plate to be drawn together around the casing by the attachment members. Further, there is provided a sealing gasket that spaced between the internal edge of the bore of the plates and the outer wall of the casing, so that as a plate member is attached, there is effected a fluid seal between the outer wall of the carrier pipe and the plate members through the sealing of the gasket member.

Abstract: A device for coupling the peripheral flanges of a pair of pipes comprising a pair of retaining members, each having a V-shaped groove for receiving a portion of the peripheral flanges of the pipes. The retaining members are pivotally coupled at one of their ends by a single hinge and releasably coupled at their opposite ends by an over-center latch mechanism. The over-center latch mechanism employs a compression bolt and nut to maintain a low profile. The over-center latch mechanism also has primary and secondary link members, the latter preventing the coupling from completely separating should the primary link members fail.

Abstract: A circular pipe coupling for coupling aligned pipe ends is formed of arcuate segments arranged end to end. Each segment has outwardly extending lugs formed on its opposite ends, with the lugs on the adjacent segment ends being interconnected. One of each pair of interconnected lugs is formed with an integral hook, with a corresponding opening for receiving the hook formed on the opposite lug and providing an axle upon which the hook is engaged to form a hinge connection, except that one of the pairs of lugs is connected together by a manually releasable mechanical fastener, such as a bolt. One of the segments may be manually positioned upon the adjacent pipe ends to be coupled, with one or more segments freely dangling downwardly therefrom under the force of gravity, which sections may be manually pivotal upwardly for encircling the pipes and for applying the releasable mechanical fastener.

Abstract: Connector for quick release under load, particularly for pipes for transporting fluids such as hydrocarbons, characterized by the fact that it comprises, between two opposite structural elements (1, 2) or between two parts of an element connecting the two structural elements, at least a connecting device comprises an internally shaped annular ring (7) consisting of at least two segments of complementary shape, a rod (4) equipped with an outside shaping corresponding to the inside of the ring, engaged internally in said ring and extending over at least a part of its height and an annular sleeve (6) engaged on said nut and able to be moved axially in relation to it under the effect of an actuating element, such as a cylinder (12) acting directly or indirectly on said sleeve.

Abstract: A clamping connection unit for joining two hollow cylindrical pipes together is described. The unit consists of two abutting identically constructed coupling halves (1,2), an elastic O-ring (16) placed between them and a clamping connection (15) pressing the two coupling halves together. The clamping connection is in the form of a pipe clamp and is chamfered off on the internal surfaces of the clamping jaws to form V-shaped surfaces which slide down on similarly chamfered surfaces of annular ridges at the pipe ends to connect the two coupling halves together without leaving a gap.

Abstract: Coupling segments of a segmented pipe coupling have dissimilar ends that are interfittable with ends of an identical said coupling segment in only one specific orientation of said coupling segments, and which are antagonistic to the interfitting of said ends of said coupling segments in all other positions of orientation of said coupling segments.

Abstract: A hub clamp will be used to connect two conduits together in end-to-end relationship. Each conduit has a pair of generally parallel load shoulders that extend around the conduit and are axially spaced from each other. The clamp has two sets of load shoulders, one for engaging each set of load shoulders on each end of the conduit. The clamp is in two halves, and when bolted together, draws the ends of the conduits toward each other. Each load shoulder is separated by a flank. The two flanks of the mating load shoulders are separated by a gap when fully made up. The first load shoulder of each conduit has multiple angled sections. The load section is at a greater angle than the load section relative to a plane perpendicular to the longitudinal axis of the conduit. The clamp will be mounted releasably to an upper conduit so that it can slide inward and outward, for vertical conduit applications.