Abstract: To lock a pipework joint in place, a locking device 5 rests on a flange 4 mounted on the socket end of one of the pipes. The flange has, over at least one portion of its periphery, a radial L-shaped cross-section, the concavity of the L being oriented radially inwardly and mating with a complementary contour on the end of the socket.

Abstract: A remote waveguide flange clamp system (10, 11) detachably connects a first waveguide section (20) to a second waveguide section (30, 37). System (10, 11) is controlled remotely by a controller (60). A pair of elongated clamping levers (40) is mounted pivotally to pins (42) on bracket arms (39) of section (30, 37). Levers (40) rotate about pins (42) when a motor assembly (51) moves driving ends (47) of levers (40) outwardly or inwardly relative to section (30, 37). When ends (47) move outwardly, clamping ends (44) of levers (40) apply a compressive force to flanges (22, 32) of sections (20, 30) to provide a gasketed seal (80) inhibiting RF leakage therebetween. Assembly (51) includes a torque sensor (66) for continuously applying current to a motor (50) in assembly (51) until sensor (66) measures current substantially equaling a predefined value.

Abstract: A multiline fluid distribution system having an articulated fluid loading arm, which is swingable in vertical and horizontal planes, for selectively coupling the swingable fluid outlet end of the loading arm to any one of a plurality of parallel fluid transfer lines extending horizontally in a honey comb-like array. The fluid outlet end of the loading arm is supported on and transported by a carriage to the designated fluid transfer line for coupling therewith.

Abstract: The connector assembly includes a clamp having a segmented latch ring radially disposed therein and mating hubs on tubular members to be connected. A downwardly facing shoulder of the clamp engages the upwardly facing shoulder of an end hub on one of the tubular members. The segmented latch ring includes a plurality of latch segments having a T-slot for receiving actuator screws which, when rotated, cause the latch ring segments to move radially inward to engage a downwardly facing shoulder on an end hub of the other tubular member. Upon actuation, the hubs are compressed together for connecting the tubular members.

Abstract: A coupling and methods for interconnecting the ends of spirally ribbed pipe are disclosed. Grooves are formed transversely across two or more ribs of the pipe and a coupling ring is secured to the end of the pipe by lugs or cleats which rotatably engage with the grooves. Contact surfaces of the lugs are angled relative to the grooves to center the coupling ring axially of the pipe. The angular relationship of the grooves and contact surfaces of the lugs draw the ring into abutting contact with the end of the pipe as they rotatably engage the grooves.

Abstract: A leak repair clamp for pipe and pipe flanges providing a segmented frame adapted to receive interchangeable annular segmented inserts. All of the inserts provide for interlocking connection with the frame segments but each insert is adapted to fit around one particular diameter cylindrical surface out of a range of different diameter cylindrical surfaces. By selecting particular sized inserts, a single frame can accommodate a wide range of different diameter pipes and pipe fittings. When the insert segments are interlocked into the frame segments, the frame segments are then integrated by bolting threaded studs through flanges to form a unit, which in combination with two interlocked inserts is fastened around and against the cylindrical surface. Thrust restraining set screws are provided to prevent movement of the metal frame relative to the cylindrical surface the frame is fastened around and against.

Abstract: An air conduit flange structure has a plurality of flange strip elements connected by angle connections. Each flange strip element is formed by folding a plate into an L-shape with its two opposite end edges defining a guide space, having a plurality of retainer projections and slide way portions for retaining a plurality of connecting strips which are formed in the casing of the air conduit. A shock-absorbing connector has two opposite metal end portions with a canvas connection. The metal end portions each have a plurality of raised porotrusions around its edge for fastening the two opposite end edges to the flange strip elements. Rubber strips are respectively attached to the air conduit flange and the shock-absorbing connector to protect against air leakage.

Abstract: A steam turbine is disclosed which eliminates the transfer of thermal deformation from the inner cylinder to the stationary blade assemblies. A dual plane bolted connection and a free floating tongue and groove interface formed between the outer ring of the stationary blade assemblies and the turbine inner cylinder provided the clearance necessary to remove the deformation associated with the stationary blade assemblies, while supporting them within the turbine assembly. The outer ring of the stationary blade assemblies may either be formed as an integral component of formed from two sections which are then welded together. The present invention also permits the rotational blades of the turbine to be placed in close proximity to the outer ring of the stationary blade assemblies and the positioning of the flow guide on the outer ring, since the deformations due to the thermal deformation of the inner cylinder are now isolated and the deformation due to the stationary blade assemblies is eliminated.

Abstract: A hinged joint for pipes having a sealing element such as, for example, a pipe with corrugated walls and reinforcing flanges at each end. At a certain distance from its end, each pipe carries a flange, which has two diametrically arranged, outwardly directed fastening attachments, each serving to be directly or indirectly connected to the corresponding attachment of the other flange, so as to permit a rotary movement about an axis orthogonal to the axis of the pipes thereby resulting in a hinged joint, which is particularly suitable for joining motor vehicle exhaust pipes.

Abstract: A closure apparatus for pipes, vessels and the like includes a ring member which extends around the perimeter of a pair of flanges. The ring member includes a plurality of rollers that engage the nonmating sides of the flanges and impart a closing force thereon. The ring is rotatable between a locked position wherein the flanges are pressurized to an unlocked position wherein the rollers align with slots extending around the periphery of one or both of the flanges, whereby the flanges can be pulled apart.

Abstract: An apparatus for connecting castings includes an elongated screw having a threaded shank and head, a washer mounted on the screw, and a rigid bracket removably and operably mounted on the screw shank. Each connecting apparatus is mounted between the abutting edges of a pair of castings, so as to align and retain the castings in their aligned position. The castings each include a vertical edge having a flange therealong with a generally flat exterior surface, such that the exterior surfaces of the flanges of abutting castings will be parallel and adjacent. The connecting apparatus bracket has a pair of diverging legs which will engage the vertical flanges when moved along the screw shank towards the screw head. Each casting also includes upper and lower flanges, the flanges of a pair of castings being positioned in abutting contact so as to stack the castings. The screw of a connector apparatus is interposed between the abutting flanges with a washer abutting the exterior surfaces of the castings.

Abstract: A coupling device for ducts comprises locking elements constrained to the flange of a first duct which are connected to movement means to move them toward or away from the flange of a second duct. The movement means are actuated by a thrust ring which is rotated around the axis of the first duct. Along the contact side of the flange of the first duct are provided elastically stressed seals which interact between the flange of the first duct and the flange of said connected duct. Said seals consist of floating rings running and oscillating in recesses made in the flange, said floating rings being acted upon by elastic elements inserted in said recesses.

Abstract: A segmented retainer gland assembly for holding pipe joints and the like together, including at least two gland segments in the shape of a circular arc forming together a circular gland for securing around a circular pipe, each of the segments having end flanges projecting substantially perpendicular to one side face of the gland segment, a clamping bracket having an inside face provided with a recess sized and shaped to receive the two end segment end flanges when adjacent ends of the gland segments are positioned together, each of the clamping brackets and gland segments having bolt holes and each of the clamping brackets having corresponding bolt holes which align with the bolt holes in the gland segments when the segments are positioned together, and bolts and nuts for securing the clamping brackets on the gland segments to hold the segments together at the end flanges to form a circular gland when the flanges are assembled together.

Abstract: An improved clamp connector for securing ends of tubular members together in tight sealed relationship and including a pair of semicircular segments having lips to engage the opposite sides of abutting projections on the tubular members, a pressure responsive actuator to preload the segments on the projections, connecting studs between the segments which are loaded by the actuator and blocks of a preselected size to be positioned in supporting relationship to the actuator in its preload position to maintain such preload on the segments and studs after the fluid pressure on the actuator is released. A pressure responsive portion of the blocks allows their quick and positive release when desired.

Abstract: The invention relates to a flange connection for two components, in particular for containers, pipes or the like, with each of the two components having a flange which can be fastened against one another by fastening means and enclose between them a sealing body gripping over the connecting joint between the two components. Each flange, in its end face facing toward the connecting joint, has an annular sealing chamber which widens conically toward the connecting joint and into which a sealing body of annular configuration is positioned. The flanges, when fstened, bear against one another at the end face and together form a sealing chamber which is approximately triangular in cross-section and is virtually completely filled by the sealing body deformed by the fastening.

Abstract: An IV lock for preventing IV connectors from separating. The IV lock has two split-fork locks at each end for releasably securing a male IV fitting or connector to the IV lock and for releasably securing a catheter to the IV lock. The IV lock may also include a snap-fit clamp intermediate the two split-fork locks for securing an intermediate connector coupled between the male IV fitting and the catheter fitting from moving laterally and axially relative to its length. The male IV fitting and catheter are prevented from moving axially and transversely of their length when secured in the IV lock.

Abstract: A segmented retainer gland assembly for holding pipe joints and the like together, including at least two gland segments in the shape of a circular arc forming together a circular gland for securing around a circular pipe, each of the segments having end flanges projecting substantially perpendicular to one side face of the gland segment, a clamping bracket having an inside face provided with a recess sized and shaped to receive the two end segment end flanges when adjacent ends of the gland segments are positioned together, each of the clamping brackets and gland segments having bolt holes and each of the clamping brackets having corresponding bolt holes which align with the bolt holes in the gland segments when the segments are positioned together, and bolts and nuts for securing the clamping brackets on the gland segments to hold the segments together at the end flanges to form a circular gland when the flanges are assembled together.

Abstract: The device for coupling two pipes comprises a variable length assembly formed from two tubular parts, whereof the internal diameter corresponds to the internal diameter of the pipes. The tight coupling of this assembly to the ends of the pipes is brought about by compressing O-rings between a planar surface and a spherical surface by means of two nuts. The two tubular parts are then tightly joined by actuating a nut compressing a third O-ring.

Abstract: A tube connecting device is provided that connects rectangular tube ends in a fluid-tight manner with one another. The tube ends communicate with one another at their ends in a tube connecting device. A first tube end has a frame that is open on one side, this frame having a circumferential groove. A second tube end has a circumferential flange that is received in the circumferential groove. This open side of the frame is covered by a sealing strip fastened thereto, this strip clampingly spanning adjacent portions of the frame and flange.

Abstract: The invention relates to a flange connection for two components, in particular for containers, pipes or the like, with each of the two components having a flange which can be fastened against one another by fastening means and enclose between them a sealing body gripping over the connecting joint between the two components. Each flange, in its end face facing toward the connecting joint, has an annular sealing chamber which widens conically toward the connecting joint and into which a sealing body of annular configuration is positioned. The flanges, when fastened, bear against one another at the end face and together form a sealing chamber which is approximately triangular in cross-section and is virtually completely filled by the sealing body deformed by the fastening.

Abstract: A quick connection device has a supporting structure for connection elements constrained to the union body by means of radial engagement members engaged in a movable manner with a substantially spherical reaction surface of the union body. In this manner any coplanarity defect or difference in thickness of the end flange of the pipe to be connected is compensated for through appropriate rotation of the supporting structure of the quick connection device along said spherical surface.

Abstract: Mounting boards for supporting and connecting fluid power components are secured together with dovetail clips to make up arrays with a large number of terminals. There are grooves in end faces of the boards so as to define marginal lands which are engaged by the clips. The lands of adjacent boards form a complete dovetail structure to be gripped by a clip with a self-locking action. The contiguous faces of adjacent boards may have locating means such as pins and recesses. The boards may have spigots protruding from them for connection with piping. Venting ports are provided with muffler caps.

Abstract: A device for connecting the ends of two pipes and comprising an insert and a bushing that slides over the end of one pipe, that the insert fits into, and that has a rear face extending inward at the end toward the insert and overlapping an outside annular ridge on the end of the pipe. To facilitate removing contamination from the connection, the rear face has at least one bore therein.

Abstract: The invention relates to a retractable connector for interconnecting the ends of two flow lines in a releasable manner.

Abstract: A pipe joint has a pair of latching hooks pivotal on opposite sides of a tubular coupling member, which hooks engage into slots in an annular plate and, when pivoted, lock over the slot ends. The hooks are simultaneously actuated by levers having free ends connected to a ring which surrounds the tubular member and is manually rotatable in the circumferential direction thereof so as to pivot the hooks to or from locking engagement with the annular plate at the ends of the slots.

Abstract: Integral transverse flanges on duct sections made up, for example, of two L-shaped work pieces, are readily assembled into permanent rigid section-joining frames. At the frame corners, the interfitted flanged ends of corner pieces are trapped, adjacent to the integral flange webs, behind an outward-turned ridge on a surface of the duct and beneath an inward and backward turned spring margin having a progression of lanced projections. Tabs, extending across the lines of juncture of the L-shaped pieces along the outward turned ridge, are peened over to seal the joints of the work pieces positively and prevent the escape of air. Easily applied clips hold the flanges of the adjacent duct sections tightly against each other, and may be used also to retain narrow reinforcing bars likewise behind the out turned ridge and beneath the spring margins.

Abstract: A plurality of flange members are positioned oppositely of one another on the ends of a pair of generally rectangular sheet metal ducts. The flange members are positioned in pairs on the adjacent ends of the ducts. The angular legs of corner pieces extend into the ends of the flange members to connect the adjacent flange members on the end of each duct so that four corner pieces connect the flange members to form a frame around the respective duct end portion. The oppositely positioned flange members on the adjacent duct end portions are sealingly secured together by clamping together the adjacent corner pieces. Each flange member is formed by a thin walled sheet member and includes a pair of legs angularly disposed relative to one another to form a plurality of wall sections. A first wall section terminates in a first leg end portion, and a second wall section terminates in a second leg end portion. The first and second leg end portions are spaced apart.

Abstract: Four corner pieces are used to connect the ends of two rectangular duct sections together. Each duct wall has a groove at its end and also a flange, the flange in each instance having a resilient rim or lip. The corner pieces comprise two offset legs, the legs each having a web residing in planes parallel to each other and having a connecting portion residing in a plane intermediate said two planes. In this way, one leg is engageable with a portion of a flange on one of the duct sections and the other leg is engageable with a portion of a flange on the other duct section. Due to the resiliency of the flanges, the legs, which have angled flanges thereon, can be snapped into place to retain the two duct sections in a connected end-to-end relationship.

Abstract: A coupler for coupling together two pipes comprises a substantially cylindrical body on which a plurality of hook arms carrying latches are pivotally mounted. An actuator ring is rotatably mounted on the coupler body and has a cam surface which is arranged to cause the hook arms to pivot to move the latches into and out of a position in which they serve to lock a flange at the end of a pipe to a front flange of the cylindrical body. The pipe flange can be guided onto the coupling by guides and the guides are also effective to hold adaptor plates on the flange so that the coupler can be used to couple pipes of different diameters. No axial movement of any of the components of the coupler takes place during coupling, movement of the actuator ring being purely rotational and movement of the hook arms and latches being purely pivotal.

Abstract: The invention relates to a quick-release coupling, more particularly intended for hose pipe assemblies used at sea.Said coupling is composed of two jaws which cooperate with truncated parts of the coupling members and are held together or released by the movement of a finger sliding inside bores provided in said jaws.The coupling according to the invention offers improved efficiency and reliability.

Abstract: A duct jointing system is provided which includes a plurality of elongate frame members, each being a single piece of sheet metal folded to define a particular section. The section includes an open channel to receive an edge portion of the sheet metal duct, the channel having a base, a first web extending generally perpendicularly to said channel from a location adjacent the base, an outer portion at the end of the first web remote from the channel, the outer portion extending in the same general direction as the channel, and a second web extending obliquely toward the channel from a location adjacent the remote end of the first web. The single piece of sheet metal has an expanded portion constituting substantially the whole of the second web. A plurality of corner pieces are provided, each having two ends angled to each other, each end being insertable endwise into one end of one of the elongate frame members, and means are provided for securing together adjacent frame members on opposing duct ends.

Abstract: A duct jointing system has frame members each with a channel portion for engaging an end of a respective duct wall and an outwardly projecting portion. L-shaped connectors engage in openings in the outwardly projecting portions for securing the frame members together as frames and adjacent frames are connected by cleats engaging projections on the outwardly projecting portions and reinforcing flanges on the connectors, the flanges being cut-away to allow the cleats to be driven longitudinally into position.

Abstract: A three-unit assembly for a pneumatic circuit includes a filter, a regulator and a lubricator, each having a body portion providing an air passageway therethrough. The air passageway of each terminates at respective inlet and outlet ports. Each of these engagement portions being provided adjacent to the inlet and outlet ports and including sloping engagement faces which come together in a somewhat V-shape, and face generally axially opposite the direction in which their respective inlet or outlet port opens. Coupling members are provided with passageways providing communication between the outlet port of one of the filter, regulator and lubricator and the inlet port of the next adjacent one of the filter, regulator and lubricator. Each of the coupling members including a pair of threaded bores which extend generally transversely to the coupling member's passageway.

Abstract: A plurality of flange portions are positioned oppositely of one another on the ends of a pair of generally rectangular sheet metal ducts. The flange portions are positioned in pairs on the adjacent ends of the ducts and each flange portion includes an upstanding wall having a pair of end portions for receiving the right angle legs of corner pieces. Four corner pieces extend into abutting relation with the upstanding walls at the four corners of the end of each duct to form a frame around the duct end portion. Each corner piece has a corner section, and a pair of legs extend angularly from the corner section. The pair of legs extend into abutting relation with the upstanding walls of adjacent flange portions on each duct end portion. In the assembled joint, the frames around the duct end portions are oppositely positioned with a gasket member positioned between the flange upstanding walls and the surfaces of abutting corner pieces. Each corner piece includes a corner and an outer edge with a corner flange.

Abstract: There is illustrated and described herein a heat exchanger including rows of tubes, a pair of headers secured to the ends of the tubes, a groove formed in each of the headers adjacent the peripheral wall thereof and intermediate adjacent rows of tubes, a recessed portion formed along the full length of the centerline of each groove, a pair of tanks having walls aligned with and mounted in the grooves of the respective headers, a ledge formed around the outside wall of each header, a chamfer formed along each of the inner and outer edges of the tank walls to form a blunt edge at the ends of the chamfers, and a gasket mounted in each groove and depressed along its centerline into said recessed portions by the blunt edge, the tanks being retained in position by bending spaced extensions of the peripheral wall of each header onto the ledge.

Abstract: A system for connectng the ends of sheet metal ducts wherein each duct end is provided with a frame. Corner connectors defining perpendicularly extending arms are associated with each frame, and bolts or other fasteners are utilized for connecting the connectors and frames. The respective frames comprise integral roll-formed sections at the duct ends. The sections include a first portion extending perpendicularly outwardly from the duct wall and a second portion bent rearwardly from the outer end of the first portion. When the frame is formed in this fashion, it is adapted to receive the side edges of respective arms of corner connectors whereby the ducts may be efficiently assembled by locating corner connectors in place and thereafter applying the fasteners used for maintaining the assembly.

Abstract: A pipe coupling for coupling pipe ends to each other, one pipe end having at its end an annular shoulder limiting the sliding of a first sleeve member over the pipe end. The second sleeve member is so dimensioned that it fits over a piping end and is welded to same. The two sleeve members are insertable into each other such that a clamping shell comprised of two half-shells hinged to each other engages exterior shoulders of the sleeve members at a location wherein the two sleeve members are overlapped one by the other. Preferably, the second sleeve member is integral with a flange for connecting the member to an existing sleeve on the respective piping end. The invention results in a short overall structure facilitating the use of the coupling with flanged pipe connections of a piping system.

Abstract: Abutting sections of sheet metal ducts are joined at an interface by flanging the ends of each section adjacent the interface and forming a plurality of spaced tabs in the wall surface of the flanges, which tabs protrude outwardly in a direction away from the interface. A generally V-shaped coupling member, having a portion of the free edges thereof folded back under the corresponding side wall, is then assembled over a pair of opposed flanges with the edges of the folded under portions snapping in behind the tabs to lock the flanges together.

Abstract: Clamp joint for axially clamping together the end faces of two coaxial cylindrical members having identical diameters, the clamp joint including at least one first projection secured to one member near the end face thereof and at least one second projection secured to the other member near the end face thereof, each projection projecting substantially radially outwardly from its associated member, and lying in a plane parallel to the common longitudinal axis of the members, a connecting part articulated to the first projection, extending axially from the first member to the region of the second projection and lying in a plane parallel to the common longitudinal axis of the members, the second projection and the connecting part being provided with bores whose axes are transverse to the common longitudinal axis of the members and located to be aligned with one another when the end faces of the members are in proximity to one another, and a bolt arranged to be inserted into the bores in the direction of their ax

Abstract: This invention relates to a method for coupling or joining pipes and tubes wherein an elastic force stored in said elastic coupling perpetually exerts a force that maintains a leak-proof connection between two ends of the pipes or tubes. Said elastic coupling comprises a plurality of the segments of an elastic ring having a cross section of annulus with an opening on the inward side of said elastic ring and a clamping collar of annular geometry with a groove on the inward side of said clamping ring, in which groove said plurality of the elastic ring segments are disposed in a confined fashion. The rims of two matching flanges built on each end of two pipes or tubes to be connected are received by said plurality of the elastic ring segments through said openings of the elastic ring segments.

Abstract: This rotating joint (7) has an axis (Y--Y) parallel to the axis of the pivotable mounting of the engine. The joint comprises two annular planar surfaces (18, 19) having the same axis (Y--Y) and respectively rigid with the two elements of the exhaust pipe (6, 9) to be interconnected. These surfaces are separated by a heat-resistant anti-friction ring (20) and are biased toward each other by a pivotal U-shaped element (21). Application in vehicles having a transverse front engine.

Abstract: A releasable clamp for use with a system for coupling modular pressure fluid components. Each component is formed with a head or body which may contain appropriate conduits and passages. On each side of the body there is provided transversely extending, downwardly tapered flanges which are engaged by correspondingly tapered cam surfaces on the interior surface of depending legs on a clamping yoke. The releasable clamp is formed by a bolt extending between the depending legs of the yoke and mounting a wedge block having a wedging surface which cammingly engages with cooperative wedging surfaces on the fitting components. Upon rotation of the bolt, the wedging surfaces coact to clamp and secure the yoke tightly over the modular components and hold them firmly in pressure-tight relationship.

Abstract: A clamping device on heat exchangers that will mechanically force mating parts together to prevent fluid leakage. The clamping device comprises one or more mechanically formed clips or clamps sprung around the rims of mating parts with sufficient force to prevent the faying surfaces from separating during normal use. Gaskets or sealing compounds may be present between the surfaces.

Abstract: A modular clamping system for coupling pressure fluid components. Each component is formed with a head or body which may contain appropriate conduits and passages. On each side of the body there is provided transversely extending, downwardly tapered flanges which are engaged by corresponding cam surfaces on the interior surface of depending legs on a clamping yoke. A clamping or cam pin having a longitudinal flat is inserted through corresponding apertures in the depending legs and, upon rotation, tightly clamps the yoke to the component parts and thereby clamps the parts together in sealed relationship. An external mounting bracket may be provided on the yoke for mounting the assembly on a wall or other support.

Abstract: A method and apparatus for aligning and fastening open ended tubular members, such as pipes, tanks, and other cylindrically shaped fluid enclosures, which have radially outwardly protruding flanges extending around the circumference of the open ends. The flanges have flat mating faces and tapered back sides defining conical surfaces which converge radially outwardly when the flanges of two tubular members are abutted. The fastening device comprises a ring, a plurality of rotatable and radially movable clamping spools retained on the ring, and a like plurality of bolts on the ring for moving the clamping spools radially inward. The rotatable clamping spools have a cylindrical shank and rim segments at the shank ends which extend around only a portion of the shank circumference.

Abstract: A device for connecting the flanges of two pipelines including a series of radially equally spaced gripping dogs on one of the pipelines for gripping the flange on the other of the pipelines means for moving the gripping dogs axially and radially whereby the gripping dogs axially pull the flanges toward the other pipeline into sealing relationship.

Abstract: A pipe connection, particularly useful for a motor vehicle exhaust line, is provided with a spherical sealing surface on one pipe which projects into an axial accommodating space on a mating pipe. The pipes are held together by spring clamps which have opposite ends facing each other for engaging oppositely facing recesses on clamping structures (e.g., flanges) associated with each pipe. The spring clamps are constructed as C-shaped leaf springs having rounded ends.

Abstract: Mechanism for securing the end plates, or flanges, of two in-line pipe sections is disclosed. A clamp member, having two jaws which remain fixed during clamping, is pivotally mounted on a standard secured to one of the pipes. A rotary locking member has an arcuate wedge segment and an abutment surface. The locking member is powered to rotate in one direction, to raise the clamp member by engagement of said abutment surface therewith. The locking member is powered to rotate in the opposite direction to release the clamp member for movement over the flanges and to wedge the wedge segment with said flanges between said jaws.

Abstract: A pipe coupling comprises a tubular member to be coupled to a flange, and a ring slidable on the tubular member carrying pivotable hooks which co-operate with cams on the tubular member to engage behind the flange as the ring is moved along the tubular member. A second ring is provided for locking the first ring in position after coupling of the pipes has taken place.

Abstract: A pipe coupler for releasably connecting two flanged pipes together in end-to-end manner, and with a means for positively disconnecting the pipes when the cpupler's grip thereof is released. A plurality of the couplers are mounted on and spaced around one of the pipe flanges, and each coupler has an arm with a jaw for gripping the opposing pipe flange and a stem slip-fitted into a housing so as to be rotatable and translatable relative thereto for effecting clamping and unclamping movement. A drawbolt is threaded into a bore in the stem to move the stem forward or backward with respect to the housing. A radially extending finger connected to the stem applies force against the opposing pipe flange to push the two flanges apart and positively separate the pipes as the stem moves outward from the housing.