Abstract: This invention relates to a device for the sealed connection of two pipe elements, wherein it comprises in projection on the pipe elements two members capable of being moved towards each other by at least one clamping means and of which the contiguous faces defined opposite grooves for housing a crushable seal comprising an inner toric ring of which the convexity is directed outwardly and an outer toric ring of which the convexity is directed inwardly. According to the invention, the seal is constituted solely by such rings, which abut on each other opposite the annular crests of their convex parts and the circular groove of each connecting member presents convergent bearing surfaces pressing the edges of said rings.

Abstract: A pipe connection for instruments or machines, with a flange on the machine side, which has a means of attachment for connecting a flange on the pipe side.

Abstract: Disclosed is a sealing ring comprising a molded elastomer ring having an inner ring contained therein which forms a pipe joint between two abutted pipe ends. Each of the pipe ends includes a recessed part, a flange or the like, which can be clamped together, for example, by means of a screw, and each of which has a sealing cavity into which the two axial ends of the sealing ring sealing the joint project. The axial ends of the sealing ring are deformed by the clamping together of the two recessed parts or the like and conform to the contour of the interior of the corresponding sealing cavity. To facilitate assembly and improve sealing properties, the two outer annular edges of the molded elastomer ring which rest against the surface of the two pipe ends are rounded and thus provided with a radius (R1).

Abstract: A joint for rigidly coupling first and second pipes having high temperature fluid flowing therethrough. The joint comprises first and second annular members including mating spherical segments which are rigidly coupled, respectively, to the pipes; a coupling assembly to couple the annular members in telescoped engagement and to radially inwardly compress these members to resist relative angular movement therebetween; an annular cavity defined by the telescoped annular members and communicating with the interface of the engaged annular members; and an annular, metallic and torsionally flexible seal located in the cavity to resist fluid escape from the joint through the interface of the annular members. The joint accepts annular misalignment of the pipes as the pipes are being connected, but thereafter the coupling assembly applies the radially inwardly directed compression to the mating spherical segments to resist further relative angular movement therebetween.

Abstract: This invention discloses a dielectric pipe flange gasket having the dual functions of providing a leak proof seal for the pipe flange joint and an electrically insulating barrier between flanges, which dielectric pipe flange gasket comprises a planar annular disc member of corrosion resisting metal sandwiched between two hard dielectric planar members respectively bonded to two faces thereof and a pair of ring seals made of dielectric elastomer respectively disposed in two annular seal grooves respectively included in two faces of the pipe flange gasket, wherein the depth of the grooves partially extend into the metallic planar annular disc member.

Abstract: Seal for a rotatable pipe coupling of large dimensions such as the swivel of a mooring device, comprising a sealing ring (30) of substantially rectangular cross-section (31) place in a rectangular groove (29) which bridges the gap (27) to be sealed, the sealing ring (30) being placed in the groove (29) in a manner such that it can expand or contract by temperature variations inside the groove (29). This can be achieved by providing radial clearance (34) between the inner face of the ring (30) and the opposite wall (28) of the (29) and/or clearance (35) between the ring (30) and the outer wall of the groove.

Abstract: A butterfly valve has a housing formed from two stamped sheet parts. The shaft of the valve flap is located in shaped-out parts of the housing halves. The two flanges of the housing halves are held together by a clamp, which has an inwardly open, U or V-shaped cross-section and can be secured in articulated manner by two semicircular parts and presses by chamfered inner faces on tori on the flanges. Thus, the valve can be assembled and disassembled by loosening a single screw.

Abstract: The device makes it possible to connect tightly first and second parts having a flange and locking or tightening means for the said flanges. The tightening or locking force applied to the locking of tightening means is multiplied in order to increase the compression force applied to a gasket or joint. Each flange has a conical surface of axis D and angle .lambda.. The device has two clips, each of which has a conical surface of axis D and angle .mu., as well as an intermediate member in the form of a ring constituted by several interconnected segments and having an inner surface and an outer surface. Each inner peripheral surface has a conical surface of axis D and angle .lambda. able to cooperate with the conical surface of axis D and angle .lambda. of the first and second parts. Each outer peripheral surface has a conical surface of axis D and angle .mu. able to cooperate with the conical surfaces of angle .mu. of the clips.

Abstract: The invention relates to a pipe fitting A, B, C with flange connection for joining at least two pipe ends angled with respect to each other, suitable for the installation of a pipe system of desired configuration with branchings and/or elbows. The pipe system to be installed has to have the capacity to be installed in the smallest possible space and with the most sharp and twisted bends in any desired direction. According to the invention this problem is solved by molding an annular rim flange (3, 4, 14, 15, 16) extending over the surface of the fitting to at least one of the connection openings (1, 2, 11, 12, 13) angled towards each other by at least 45.degree. of the arch-shaped fitting (A, C) and by the fact that the flange projection and the inner curvature of the pipe fitting (A, C) are mutually coordinated in such a way as to barely allow the positioning on the flange of a clamping collar (F) by means of which the rim flange is directly pressable against a counterflange.

Abstract: A structure at a connection where at least two resin pipes are connected to each other end-to-end. The structure is characterized by annular resin body means provided on the inner periphery of the end of at least one of the resin pipes and having at least one end positioned in an annular recessed portion formed in the inner periphery of said one resin pipe. Since the above-mentioned end (which is more subject to the action of internal fluid than the other end) is positioned in the annular recessed portion, the resin body means is not eroded by the internal fluid.

Abstract: Each of a pair of annular, especially non-circular, apertured flanges for vacuum joints are formed by machining an outer groove spaced in from the outer edge, an inner groove extending inward from the inner margin of the joint and an outward slanted side interconnecting the two grooves resulting in a sharp corner on the inner edge of the inner groove. A flange spacer, apertured to receive the bolts which draw the flanges together is positioned in the outer groove of both flanges. A soft metal (e.g., copper) gasket overlies the inner grooves. When the bolts are tightened, the gasket deforms outwardly under the pressure of the sharp corners to seal against both slanted surfaces to form an ultra-high vacuum joint which is "bakeable." For temporary testing of joints a portion of the gasket immediately overlying the corners may be replaced with an elastomeric ring.

Abstract: This invention relates to a tight connection device comprising a flexible metal joint. The joint, located in two trapezoidal grooves formed in two flanges, has in the rest condition an oval section, whereof one of the axes of symmetry is located in the plane of symmetry of the joints. The joint is in tight contact with the sides of the groove in four zones and, after securing the tie rods, is in contact with the bottom of the grooves in two zones.

Abstract: A conduit-connector coupling structure, otherwise sometimes known as a clamp-type connector, incorporates plural clamp segments operating to cam together flange members producing the coupling. Clamp segments are employed with connecting attachment means so as to draw together the flange members employed upon the tightening down of the clamp segments relative to each other. The forward flange portions of each of the flange members are provided with recesses mutually accommodating the insertion of a metallic sealing ring. When the flange members are drawn together the sealing ring is held in radial compression. The ring itself is provided with mutually spaced peripheral sealing lands on respective ones of its oppositely tapered sides. The ring is designed so that the recesses separating the lands will essentially maintain their integrity for all radial compressions to the ring which is intended for use solely within the elastic limit and below the yield point of the material of such ring.

Abstract: A diaphragm valve suitable for the food industry, including a valve body (1) and body caps (2) connected to opposite ends thereof in a detachable but water-tight manner. Sealing between the valve body (1) and the body cap (2) is provided by an annular groove (16) recessed on the end surface of the valve body (1) and/or the body caps (2) and packing rings (17) having an inner diameter corresponding to that of the valve body (1) and provided with an annular protrusion (18) fitted to the groove (16). By this sealing, a gap between the opposite surfaces of the valve body (1) and the body cap (2) is completely eliminated.

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 conduit-connector coupling structure, otherwise sometimes known as a clamp-type connector, incorporates plural clamp segments operating to cam together flange members producing the coupling. Clamp segments are employed with connecting attachment means so as to draw together the flange members employed upon the tightening down of the clamp segments relative to each other. The forward flange portions of each of the flange members are provided with recesses mutually accommodating the insertion of a metallic sealing ring. When the flange members are drawn together the sealing ring is held in radial compression. The ring itself is oppositely tapered at opposite sides and includes at least one and conceiveably multiple non-metallic seals hereinafter referred to as softseals, which are mounted on a primary ring member. The primary ring member thus includes suitable recesses for accommodating such softseals at its opposite recessed sides.

Abstract: An improved flange protector for sealingly engaging spaced flanges and protecting the flange gasket from the environment. A ring-shaped elastomer body preferably includes a grease fitting for injecting the protective fluid through the body and into engagement with the flange gasket. The elastomer body includes a self-centering rib, and is structured for flexing to relieve excessive pressure in the event of flange gasket failure. An improved method of manufacturing flange gaskets according to the present invention is also provided.

Abstract: A metallic spring member 30 cooperates with grooves 32, 34 disposed in pressure containing members 10, 12. The spring member 30 has an E-shaped cross section and is compressed both horizontally and vertically when the members 10, 12 are fully engaged. The seal is self-energizing under normal operating conditions and able to accommodate small, but significant relative motion between the pressure containing members 10, 12 during conditions of abnormally high and unevenly distributed temperature.

Abstract: The invention pertains to conduit assemblies, such as pipeline assemblies. A first conduit section comprises a first tubular conduit body. A second conduit section comprises a second tubular conduit body connected in end-to-end relation with the first conduit body. The bodies have opposed end faces. The second conduit section further comprises a tubular lining disposed within the second conduit body and having an inner diameter substantially equal to the inner diameter of the first conduit section. An annular seal sealingly engages between the opposed end faces of the conduit body, the seal being sufficiently rigid to maintain an axial gap between said end faces. The tubular lining extends beyond the end face of its respective conduit body into said axial gap and abuts the first conduit section at its inner diameter. Such extending portion of the tubular lining is preferably beveled on its outer side to form a lip at its inner diameter for noncompressive abutment with the first conduit section.

Abstract: In a high-vacuum closure, a metallic sealing ring is positioned between a first and a second sealing surface. The sealing surfaces are each formed of a metallic surface of revolution and are coaxially arranged. When the sealing surfaces are moved between the open and closed positions, the sealing ring rolls on the sealing surfaces. The sealing ring is shrunk on one of the sealing surfaces for securing it in place.

Abstract: A coupling for coupling two pipe sections in sealed relationship, the coupling comprising a male member for connection to one pipe section, a female member for connection to a second pipe section, a locking member located on the male member, the locking member comprising a locking sleeve having a plurality of circumferentially spaced bendable locking fingers which extend integrally and axially from the locking sleeve, a displacement piston mounted on the male member for displacing the free end portions of the locking fingers radially outwardly, and a locking recess in the female member for receiving the locking fingers when displaced by the displacement means while the members are in mating engagement, the locking recess defining a bearing surface against which the free ends of the locking fingers will bear during displacement to draw the two members into sealing engagement with each other, the bearing surface being shaped to allow displacement of the locking fingers into and over center locking position.

Abstract: A flexible tubing coupling employs ferrules at the tubing ends, each ferrule being connected to an annular end fitting by way of a bellows. The end fittings are statically secured together by retainer halves encircling the end fittings and captured there by a rigid ring. Engagement between ferrule rims and inner spherical surfaces on the retainer halves prevent undue extension and deflection of the bellows while maintaining a uniform stress distribution on the coupling components. Various end fitting static seal configurations are also disclosed.

Abstract: A ring gasket is retainer in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported on one of the connector parts by a spacer ring or by a portion of the flange which effects a standoff between the connector parts when they are connected. The support for the ring gasket includes a flexible connection between the inside of the spacer ring and the outer periphery of the ring gasket. The ring gasket has outer peripheral, oppositely tapered sealing surfaces loaded into sealing engagement with opposing companion surfaces forming the grooves in the flanges upon making up of the connection, and the flexible connection between the spacer ring and the ring gasket permits such axial movement of the ring gasket as is necessary to enable loading thereof.

Abstract: A ring gasket is retained in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported, in some forms, at its outer periphery by a member connected to one of the connector parts between opposed abutting surfaces of the connector parts when they are connected. The ring gasket is increased in size, from a standard, to compensate for the standoff, so that the ring gasket is properly loaded. The support for the ring gasket, in another form, includes a direct connection between the ring gasket and the flange or support means, and in other forms, the ring gasket is supported at its inner periphery, and can not affect abutment between the flanges. The ring gasket has peripheral, oppositely tapered sealing surfaces loaded into sealing engagement with opposing companion surfaces forming the grooves in the flanges upon making up of the connection.

Abstract: A pipe having a sealing member (3) in an inner groove (2) at one pipe end (1). The sealing member provides a very effective seal relative to a spigot end (1a) of another pipe inserted in the pipe in question. The free ends of lip portions (6,7) of a sealing ring (4) (the cross section of which is of V-shape when undeformed) are provided with beads (8) so that behind a stiffening ring (5) surrounding said sealing ring (4) there is more volume of lip material than there is room for in the space confined by the adjacent part of the bottom of the groove (2), the exterior (1a') of said spigot end (1a), the rearmost sidewall (2') of the groove (2) and the stiffening ring (5). The pipe is preferably a plastic pipe.

Abstract: An annular bore seal for sealing between connected first and second coaxially aligned members, each of which is provided with an internal frusto-conical seating surface tapering inwardly from their adjoining ends. The seal comprises: an inner cylindrical surface; annular end surfaces at opposite ends thereof; frusto-conical outer sealing surfaces adjacent each of the end surfaces and tapering outwardly therefrom; an outer alignment ring surface midway between the end surfaces; and annular relieved areas between the alignment ring surface and the frusto-conical sealing surfaces.

Abstract: The specification describes a rotatable multiple pipe coupling structure employing a labyrinth seal between each stationary pipe and its respective rotatable pipe. Because of no protruding parts from inner pipes into the channels, there will be minimized turbulence in the fluids to be transferred through the rotatable multiple pipe coupling structure. There is also described a rotatable pipe coupling structure having a stationary pipe and a corresponding rotatable pipe. The pipes are rotatably sealed with a labyrinth seal. The coupling structures according to this invention may be further provided with a driving shaft longitudinally and centrally extending therethrough.

Abstract: In a joint between two tubes having a corrugated outer wall and a smooth or corrugated inner wall the tubes are cut to form each an open annular space between said walls at the end. A sealing ring is received by the spaces, and the tubes are pressed against the sealing ring by means of a lock ring tightened about the tube ends.

Abstract: A sealed connection for two cylindrical members includes semi-cylindrical connector sections sized to fit about the members, to bridge the joint between the members, and to be retained in position. An over-center flexing seal is also provided between two such members, as for example pipe members.

Abstract: A hanger for supporting tubing in a well head including a tubular body adapted for connection to a casing head and having a tapered and upwardly facing seat, a tubular hanger positioned within the body and supported on the seat, a downwardly converging annular space between facing portions on the exterior of the hanger and on the interior of the body, a metal seal ring positioned within the converging space, a seal actuator sleeve positioned between the hanger and the body and being movable axially to engage the seal ring, and a wedging screw extending through the body. The wedging screw engages the seal actuator sleeve and wedges the seal actuator sleeve onto the seal whereby the seal is forced into sealing engagement in the converging space between the hanger and the body.

Abstract: A ring gasket is retained in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported on one of the connector parts by a spacer ring or by a portion of the flange which effects a standoff between the connector parts when they are connected. In the case of a separate spacer ring, it is connected to the flange or supported adjacent to the groove by a support member adapted to be hand-held. The support for the ring gasket includes elements frictionally engaging or biting into the outer periphery of the ring gasket. The ring gasket has outer peripheral, oppositely tapered sealing surfaces loaded into sealing engagement with opposing companion surfaces forming the grooves in the flanges upon making up of the connection.

Abstract: A ring gasket is retained in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported on one of the connector parts by a spacer ring or by a portion of the flange which effects a standoff between the connector parts when they are connected. The support for the ring gasket includes a flexible connection between the inside of the spacer ring and the outer periphery of the ring gasket. The ring gasket has outer peripheral, oppositely tapered sealing surfaces loaded into sealing engagement with opposing companion surfaces forming the grooves in the flanges upon making up of the connection, and a slidable connection between the spacer ring and the ring gasket supports the ring gasket for such axial movement of the ring gasket as is necessary to enable loading thereof.

Abstract: A connector is described for joining tubes together, particularly plastics tubing as used in laboratories and the like.The connector comprises a first member having a barb-like projection through which the tube can be pushed but cannot be pulled in the reverse direction due to the interaction between the barb-like projection and the surface of the tube. The protruding captive end of the tube passes through a resiliently deformable disc of plastics material preferably Polytetrafluroethylene and in a preferred embodiment the disc is partly housed in a cup-shaped extension from the first member.The assembly of first member and disc is secured within a sleeve by means of a screw-thread engagement between the said sleeve and a further member which acts on the rear of the said first member. The said further member is screw-threadedly advanced into or onto the sleeve.

Abstract: A sealed connection for two cylindrical members includes semi-cylindrical connector sections sized to fit about the members, to bridge the joint between the members, and to be retained in position. An over-center flexing seal is also provided between two such members, as for example pipe members.

Abstract: Apparatus is disclosed for protecting the end face of an annular blowout preventer or the like from corrosion. In one embodiment, both a ring groove and a circle of tapped stud holes are protected in a low pressure environment by parts on a bell flange to be connected above the annular preventer, and, in another embodiment, the circle of holes is protected in a high pressure environment by the flange of another preventer to be connected above the annular preventer and sealed with respect to the annular preventer by a conventional metal API seal ring.

Abstract: A double-walled well casing for use in containing a fluid which is hotter than the ambient. The cavity between the double walls may contain insulation. Seals which maintain the inner and outer pipes in concentric relationship are designed to relieve the axial compressive stress on the inner pipe (resulting from thermal expansion relative to the outer pipe) by being stressed beyond their yield points.

Abstract: The specification describes a pipe joint suitable for fluid conducting pipework in which there are inner and outer tubes defining a jacket for fluid heating or cooling medium. The joint comprises a gasket shaped to provide continuous annular seals around the inner tube and the passageways along which heating or cooling medium flows through the joint. The gasket and the pipe flanges with which the gasket cooperates define fluid-receiving channels which are located between the sealing zones around the inner tube and the passages for the heating or cooling medium so as to receive fluid which may leak past those zones and allow it to escape radially outwardly from the joint thus preventing leaked heating or cooling medium from entering the fluid stream in the inner tube, or vice versa.

Abstract: A pinch valve includes a distortable rubber-like valve member, in cylindrical form, positioned within a generally cylindrical housing. The valve member has uniformly spaced projections and grooves which enable the valve member to collapse upon itself forming a complete closure between opposite ends thereof. When the valve member so collapses, the circle defined by the outer areas thereof has a greater radius than the radius of the valve member in the uncollapsed condition. The housing has lobular areas to accommodate the extensions of the collapsed valve member.

Abstract: A pair of concentric hoses of flexible elastomeric material are spaced radially apart to define an annular space around the inner hose. Both hoses are secured at each of their ends to a common connector ring for securing successive lengths of the double hose together. Passages through the connector rings provide communication between the annular spaces.

Abstract: Valve apparatus is disclosed for discharging pressurized fire extinguisher fluid from a container. A valve housing includes a valve body and manifold between which a diaphragm which is removably mounted to facilitate field replacement. The diaphragm comprises a semi-spherical shell which is mounted across a passage in the housing with a concave side of the shell facing the pressurized fluid. The shell is fabricated of a metal which is pre-stressed so that the diaphragm ruptures above a predetermined fluid pressure for relieving over-pressure from the container. A dual seal is formed about the rim of the diaphragm by means of an O-ring and an annular knife edge which are disposed within a recess of the manifold body. The valve body and manifold are secured together in metal-to-metal contact at their interface to prevent leaking. A squib cartridge is mounted in the housing to rupture the diaphragm and permit the fluid to discharge through the passage.

Abstract: Pipe ends are connected by a pipe joint comprising radially extending flanges, a sealing ring and clamping means connected to one of the flanges by holding means extending substantially radially inwardly toward the axes of the pipe joint. This is a continuation of application Ser. No. 587,617, filed June 17, 1975 and now abandoned.

Abstract: A U-lock has a pair of hinged channel-like arms with flared free ends and a U-shaped spring strap handle connected to the arms and adapted to push them onto and hold them in clamping positions on flanges of irrigation pipe sections.

Abstract: A coupling for establishing a fluid-tight connection between adjacent open ends of substantially coaxial hollow elements, especially pipes, includes a pair of flanges, each formed from a section of a profiled strand, respectively fitted about the outer surfaces of the elements and provided with contact surfaces arranged to fit upon each other upon axial movement of the flanges toward each other, and in which at least one of the flanges is provided with an annular cutout forming with the other flange and the outer surfaces of the elements at the adjacent ends of the latter an annular space. A compressible or ductile sealing element is located in this annular space, and a device engaging the flanges is constructed to move the latter in axial direction toward each other.

Abstract: A tubular clamping and sealing coupler for underwater oil or gas pipelines or the like operating under high pressure, providing a fluid-tight joint between the sections of the pipelines, one section of the coupler being firmly secured to the pipe on which it is mounted while the other section of the coupler is mounted on the adjacent pipe and is tightened into sealing and clamping position against the first mentioned coupler, a single operation performing the clamping and sealing and coupling function, said coupler eliminating the need for precise alignment of the pipes or use of a chemical sealing compound.

Abstract: The specification discloses a pipe joint which utilizes a spherically tapered coupling that mates spherically tapered pipe ends. Because of the spherical tapers, O-ring seals contained in the coupler do not engage the pipe ends until the pipe ends and coupling are seated to form the pipe joint. In one embodiment, a plastic ring or cap is made integral with each pipe end and acts as a sliding surface that allows ready joining of the pipe ends with the coupler.

Abstract: A compound sealing gasket is provided for vacuum line connectors which ines a tight seal and reduced galvanic reactions when the connectors consist of dissimilar metals.

Abstract: A modular assembly for constructing conduits of the type used for underground telephone lines, electrical lines, and the like. The specification discloses several embodiments each of which generally comprises a plurality of side-by-side corrugated plastic tubing sections. These sections are provided with laterally extending means which engage to prevent relative longitudinal movement between adjacent sections. Preferably, longitudinally spaced and circumferentially extending wrapping or binding members encircle the assembled section to prevent relative movement between the sections in the lateral direction. The specification and drawings also disclose several forms of joints for connecting aligned assemblies. In the preferred form, the joints include resilient foam members having spaced openings for receiving the aligned ends of the tubes in successive sections. Additionally, clamp means are provided for drawing the sections together to compress the foam members.