Abstract: There is disclosed a clamp useful for connecting a tie-in line transversely to a carrier pipe, comprising: a lower body portion and a upper body portion that when connected together define a tubular bore, the lower and upper body portions being adapted to clamp onto the carrier pipe; a set of gripping collets positioned with the tubular sleeve bore proximate opposed ends of the upper and the lower body portions to engage such a carrier pipe; a branch tap positioned between the gripping collets and extending from one of the body portions transversely to the tubular bore; a first seal and a second seal for providing a seal between the carrier pipe and the upper and the lower body portions, the first and second seal positioned within the transverse bore and between the gripping collets and the branch tap; and a set of axial seals to form axially extending seals between the upper and lower body portions during use and to connect the first and second seals during use.

Abstract: Interconnecting short plastic pipe segments, with at least one stub shaft molded onto each pipe segment. A polymer selected from one of the polyolefins, such as polypropylene, is the preferred plastic because of its resistance to chemical erosion and because polypropylene, unlike some other plastics, such as polyvinylchlorides, can be recycled. The pipe segments can be economically molded in segments of about one foot in length, and are rigidly held together by novel load-bearing clamps.

Abstract: A threadless connector for cable pipes or electrical conduit that includes two half-couplings having tightening flanges along their lateral edges or faces. Female and male necks and beads extend along the cooperating lateral faces to form longitudinal seals when the half-couplings are clamped together. Internal radial grooves located near the outer parts of both ends of the half-couplings cooperate with split compression rings the outer surface of which compresses against the conic grooves and the inner edges bite into the connected pipe sections to form radial seals therewith. The half-couplings can be either two separate congruent parts or joined along one edge as desired.

Abstract: A mechanical coupling device for connecting together two aligned fiberglass reinforced plastic duct sections, each having a terminal end portion of equal diameter, so as to form a leak proof joint that is resistant to fire and also chemical corrosion from gases and/or condensate within the duct sections is disclosed. The device comprises elements that cover and seal the terminal end portion of each said duct section; a central gasket member that covers the end elements and extends around the terminal end portions of the duct sections; a flexible metal sleeve member that surrounds the central gasket member; and tightening devices on the sleeve which compress the central gasket member and hold the aligned adjoining duct sections together to provide a leak-proof joint. The tightening devices are spring driven so that if the bulk of the gasket member is reduced due to fire, the sleeve will maintain a firm non-slip hold on the duct joint.

Abstract: An improved axially split clamp for preventing rupture of the O-ring seal of Ford Spring-Lok fittings even when the outside diameter of the Spring-Lok fitting is oversized. Each mirror-image half of the axially split clamp includes a semi-annular surface sized to fit snugly over the cage of the Spring-Lok pipe and also a semi-circular surface positioned to encircle that portion of the Spring-Lok push-on fitting over the coupling's O-ring seal. A flat-sided groove is cut in each semi-circular surface and a ribbon-like strip of rubber or other resilient material is inserted into the groove. The strip's thickness is about twice the depth of the groove so that when the two halves of the clamp are screwed together, the resilient material will firmly grip the outer diameter of the push-on fitting and thereby prevent back and forth transverse movement of the Spring-Lok fitting, prevent wear and failure of the O-ring seal and prevent the escape of fluid from the Spring-Lok coupling.

Abstract: A pipe joint incldues joint main body having securing through holes respectively formed at positions spaced apart from the two ends of the joint main body by a given distance in the longitudinal direction thereof for securing hook portions, and a plurality of flange bodies each including hook portions respectively formed on one end side thereof to be inserted and secured to the respective securing holes and a flange portion formed on the other end side thereof and having a connecting hole.

Abstract: A pipe repair coupling comprising a pair of semi-circular separate and independent coupling segments. Each segment is identical in cross section, length, and width. When coupled together along one elongated edge in a snap fit relationship, the interconnected segments may be placed about a cylindrical pipe to repair a hole or the like therein, then squeezed together to lock along the other free elongated edges thereof. A suitable adhesive is applied between the coupling and the pipe being repaired prior to squeezing the segments together.

Abstract: A pipe connector comprises a body portion 10 having a male threaded tubular portion 12 defining a cavity 14 and comprises a nut 16 with a female threaded portion 18 and an unthreaded portion 20 of lesser diameter defining a bore 22. The junction between the threaded and unthreaded portions 18, 22 is constituted by an annular seat 24 against which is received a thrust washer 26 and against which in turn is received a sealing washer 28 which bears against the end of the male threaded portion 12.A radially split collar 32 has a pair of radially extending arms 34, 36 at the split and a clamping screw 38 passing through holes in the arms 36 and 34 to receive a nut 40. A radially outwardly extending annular slot 44 is formed at the mouth of the clamping means 30 and is a snap-fit over a flange 42 on the nut 16.

Abstract: A profile gasket adapted for forming a seal in a joint between an annular band and annularly grooved ends of two pipes positioned end-to-end. The profile gasket comprises a sheet of elastomeric material having a bottom surface with at least two integrally molded and laterally spaced ridges running along its length.

Abstract: A pipe coupling wherein the axial split is offset from the location wherein the coupling is closed. The offset increases the resistance of the pipe coupling to lifting forces exerted by pressurized fluid in pipes or pipelines. In addition, an extension member and a reinforcing member on the opposite sides of the closure device increase the section modulus of the pipe coupling and further increase the resistance of the pipe coupling to lifting forces.

Abstract: A pipe coupling for repair, includes separate housings and seal rings to be accommodated in the receiving portions formed in the housings, a holding portion being formed on the internal diameter side of the separate end face in the individual housing to receive the projecting seals formed at the separate ends of the above seal rings and the seal rings forming multiple string-shaped ring seals as a single unit between both ends of the above projecting seals by surrounding the portion to be repaired, and having a blocking plug in the above housing for a hole to test the sealing conditions after fixing to a pipe.

Abstract: A split fitting for coupling two tubes, one having a large diameter, one having a small diameter, the fitting having mating first and second halves for surrounding the connection point between the larger and smaller tubes and forming a threaded neck portion for threading engagement with a nut slipped over an end of the larger tube for actuating a compression fitting to seal between the fitting and the larger tube. An O-ring seal is provided within the split fitting for sealing the fitting to the smaller diameter tube when assembled. The fitting halves are coupled together using captive screws and alignment pins.

Abstract: A one-piece pipe coupling includes a cylinder with an axial joint and a sealing plate attached in spaced apart relation to the inner surface of the cylinder with a portion of the sealing plate extending beyond the axial joint for sealing the fluid pathways between a leak location and the outer surface of the coupling. A pair of arcuate gaskets extend around and are attached to the inner surface of the cylinder. The sealing plate carries a first sealing pad on the extending portion of its outer surface, which sealing pad includes circumferential guide channels for engaging the arcuate gaskets of the cylinder. The sealing plate also carries a second sealing pad on the other end of its outer surface, which sealing pad attaches the sealing plate in spaced apart relation to the inner surface of the cylinder.

Abstract: A split connector for joining pipe elements insitu including a first pipe element and a second pipe element positioned in a structure, a pair of matched semi circular body elements of semicircular construction adapted for forming a generally circular coupling connector having a cylindrical body and including an internal facing surface divided at the mid point, the first half adapted to engage a tubular end of the first pipe element and the second half adapted to engage the second pipe element, having wedge, members for connecting the first body element to the second body element and a pair of female grooves on the second half cylinder for forming a unitary axially-split collar having water tight seams; and including an internal shoulder capable of engaging a lug the first pipe section with fastening provided by adhesive applied to the pipe ends and the facing surfaces of the split connectors for providing a watertight seal and structural strength of the piping components; wherein the pair of matched semi circ

Abstract: By using fabrication procedures, and not using any casting procedures, a pipe sleeve assembly per se, or with additional components, is made for installation on a pipeline. When this pipe sleeve assembly is fully tightened about a plastic pipe, there is acceptable limited radial deflection of cross-sectional portions of the plastic pipe, being sealed by a surrounding gasket held in place by assembled fabricated parts and bolt and nut fasteners of this pipe sleeve assembly. On opposite sides of each separating gap of the pipe sleeve, side bar and lug units are welded to the pipe sleeve. Between opposite lugs, independently removable bolt and nut fasteners are secured. In one embodiment, opposite lugs both have holes, which are aligned to receive and to hold portions of a bolt. In another embodiment, one of the opposite lugs has a hole, and the other opposite lug has spaced portions thereof, each having an overlapping lip portion, which receive a drop in bolt portion located near the head of the bolt.

Abstract: A pipe coupling for connecting together two plain-ended pipes in a fluid-tight manner comprises an outer tubular casing, an inner tubular casing and a tubular sealing sleeve. The sealing sleeve has two sets of inwardly projecting ribs which, in use, are pressed into sealing engagement with the respective ends of the pipes. The inner and outer casings are longitudinally split and tensioning screws on the outer casing can be tightened to tighten the outer casing around the inner casing and the sealing sleeve. Frustoconical slots in the outer surfaces of the sealing sleeves receive frustoconical gripping rings which have gripping teeth on the inner sides which bite into the pipe surfaces to secure the pipes against axial displacement.

Abstract: A coupling sleeve for connecting thin-walled the ends of pipes comprising a circularly bent sheet-metal strip and a sealing strip lining the inside thereof. A turnbuckle on the sheet-metal strip causes the coupling sleeve to be tightened against the pipe ends. A loosely attached spacing member located approximately at the axial middle of the coupling sleeve in the region of the turnbuckle has an end that projects through the sealing strip into the interior of the coupling sleeve in the untightened condition and is pressed outward, during the tightening of the turnbuckle by an end of the sheet-metal strip and is forced into the elastic inside surface of the sealing strip or into a slit in the sealing strip.

Abstract: Disclosed is a hose unit including harnesses which can be easily attached to and detached from the other portion of the unit at the time of fastening thereof to the body of a motor vehicle or the like and which hardly undergoes stress even at the time of vibration or torsion of the hose of the unit. The hose unit includes the hose to which respective end metal members are secured. Holders are removably fastened to these members. One harness extends along the hose and is fastened to the holders and another harness is connected to the former through the holders and extends therefrom. Also disclosed is a special hose clamp.

Abstract: An elastomer sealing sleeve 32 of C-shaped cross section is disposed in a contractible housing 10 and includes sealing lips 36 which extend towards each other and which, upon the contraction of the housing 10 and the simultaneous upending of the sleeve 32, are brought to bear snugly against the pipe wall 55. The front face 38 of the sleeve 32 is divided up into two oppositely directed conical surfaces 58, 60, which are embraced by a supporting ring 40 of V-shaped cross section. The inner flank 62 of the supporting ring is positioned between the radially inner surface 58 and the clamping ring 20 supported in the throat of the housing 10 and, in so doing, bridges the recesses 26 in the clamping ring 20. The outer flank 63 of the supporting ring supports the sleeve 32 in the area of the radially outer surface 60. This pipe coupling is particularly simple in its construction and is suitable for high operating temperatures and for large temperature changes.

Abstract: A one-piece pipe coupling includes a cylinder with an axial joint and a sealing plate attached in spaced apart relation to the inner surface of the cylinder with a portion of the sealing plate extending beyond the axial joint for sealing the fluid pathways between a leak location and the outer surface of the coupling. A pair of arcuate gaskets extend around and are attached to the inner surface of the cylinder. The sealing plate carries a first sealing pad on the extending portion of its outer surface, which sealing pad includes circumferential guide channels for engaging the arcuate gaskets of the cylinder. The sealing plate also carries a second sealing pad on the other end of its outer surface, which sealing pad attaches the sealing plate in spaced apart relation to the inner surface of the cylinder.

Abstract: A bell joint repair clamp includes first and second semi-cylindrical sleeve members adapted for secure coupling by lug members drawn together by bolts for positioning about a leaking bell joint. Disposed intermediate the bell joint and coupled sleeve members is a sealing gasket preferably formed of a pair of gasket members each having a trapezoidal cross section and comprised of a deformable, compressible material to allow the gasket members to assume the shape of and engage the spigot and bell-shaped ends of the connected pipe sections in a tight-fitting manner. Opposed ends of the coupled sleeve members are each provided with a retaining plate and pipe clamping arrangement for confining the gasket in a sealed manner between the sleeve members and circumferentially about the bell joint for sealing a leak therein.

Abstract: A sealing plate which is positioned under annular O-rings or built-in coupling gaskets. The sealing plate carries gasket material on its inner surface to complete an annular seal around the pipeline on either side of a leak location, and on its outer surface to prevent fluid from reaching the axial joint of the coupling between the annular seal. Once one positions the sealing plate properly, the annular gasket material does not become misaligned. Furthermore, the sealing plate can be used interchangeably with discrete O-rings and a coupling, or with a coupling having built-in arcuate gasket sections.

Abstract: A pipe coupling having an elastomer sealing sleeve which is approximately C-shaped in cross-section has a cylindrical housing which is split in the longitudinal direction, and which defines inwardly bent end walls and can be constricted like a pipe clip by means of a closure having tensioning screws, in which arrangement the sleeve, which is enclosed at the end faces and at the circumference by the housing and by a metal insert sheet bridging the housing gap and is approximately C-shaped in cross-section, is compressed in the circumferential direction and is brought to bear against the pipes to be coupled. Sliding rings, which are compressible in the circumferential direction, are located between the end faces of the sleeve and the end walls of the housing. Upon assembly of the coupling, these sliding rings are brought to bear against the outer walls of the pipes and form a sliding seat with the latter.

Abstract: An elastomeric sealing sleeve 6 is enclosed by an annular housing 1 which is split longitudinally and can be drawn together in the peripheral direction by means of a clamping screw 22. The clamping screw 22 passes with clearance through two U-shaped clamping members 16, 17 which are accommodated in clamping brackets 12, 13 fastened to the housing 1. The clamping members 16, 17 are supported with the ends of their legs on flat wall sections 12a, 13a of the clamping brackets 12, 13. The head 24 as well as a nut 25 of the clamping screw 22 bear against arched supporting surfaces 20a of the clamping members 16, 17. While the housing 1 is being drawn together, the clamping members 16, 17 can move relative to the shank 23 of the clamping screw 22, in the course of which the screw head 24 and the nut 25 can roll on the arched outer surface 20a. The screw shank 23 is therefore subjected to little or no bending stress.

Abstract: A pipe coupling includes a contractible housing 10, which receives an elastomer sealing sleeve 32 of C-shaped cross section, having sealing lips 36 extending towards each other. A meander-like spring ring 44, which is U-shaped in cross section and is provided with slots 74, is inserted in to the respective annular groove 42 in order to support the sealing lip 36 against the sleeve bar 34. Upon the contraction of the housing 10, the sleeve 32 is upended in the peripheral direction and the sealing lips 36 are brought to bear snugly against the pipe wall 55. At the same time, the spring ring 44 contracts as a result of a decrease in the width of the slots 74. The sealing lip 36 is supported by the spring ring 44 over a large area, and the flowing of material of the sleeve 32 in and through the slots 74 is prevented. The spring leg 68 projecting over the sealing lip 36 prevents any sticking of the torus 56 to the sleeve bar 34.

Abstract: A clamp-coupling and repairing apparatus is disclosed, which is useful for fluid conducting pipe-and-hose conduits adapted to withstand high pressure, and which includes a relatively wide band relative to the diameter of a respective conduit. The band is bent to form a circular sleeve-like structure having two free edge portions which are bent to extend radially outwardly of a space defined by the circular sleeve-like structure. Two partly circular plate members are laid against the edge portions with through-going partial longitudinal holes being provided in the circular plate members and the edge portions. A screw bolt is then able to be passed through the longitudinal holes with nuts secured onto said screw bolt for pressing the circular plate members toward one another for tightening the circular sleeve-like structure around the respective conduit.

Abstract: A scaffold coupler is actuated by an over-center lever mechanism. The scaffold coupler, which is of resilient plastics, includes a hand lever 13 which is hinged to a jaw 12 that closes upon a base member 11 to clamp tight a scaffolding tube 15. A hook member 14 hinged to the lever 13 engages with a lip 19 of the member 11 so that depression of the lever 13 urges the jaw 12 hard onto the tube 15 and actuates the clamping mechanism by pulling the hook-hinge 22 through `over-center` alignment with the lever-jaw hinge 21 and the hook-lip engagement `hinge` 23. The base-jaw surface 17 subtends more than 180 degrees to snap fit with the tube 15, and opening of the closure jaw 12 is limited by a projection 20 (or otherwise, FIG. 7 ) for support of the tube 15 (FIG. 2). Closing of the jaw 12 may be tripped by entry of the tube 15 (FIG. 6 ), and the jaws may be abrasive-surfaced (FIG. 5 ) to improve grip. The lever 13 may be selectively locked in the actuated condition (FIGS.

Abstract: A pipe coupling gasket insert is provided for optional use within a conventional C-shaped in cross-section, resilient gasket which is fitted within a conventional rigid C-shaped in cross-section coupling formed for encircling and coupling together the end portions of a pair of co-axially arranged, adjacent pipe end portions. The gasket has band-like lips formed on its inner portions for encircling and engaging the surfaces of the respective pipe end portions with the lips having free edges that are spaced apart. The pipe ends are slightly gaped apart. The insert, form of a resilient ring, is manually positioned within the gasket, for engaging the base of the C-shaped gasket, and has a radially inwardly extending rim that extends between the free edges of the gasket lips for engaging the end portions of the adjacent pipes and spanning the gap therebetween. The insert rim portion may be shaped to extend into gap or over the gap for sealing the gap between the adjacent pipe ends.

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: What is disclosed are novel pipe segments, pipe fittings, and methods of coupling pipe together wherein the novelty resides in the use of fastener means and coupling segments containing lugs with holes therethrough as couplers for the pipe segments whereby the pipe segments have metal deformations near their ends to accomodate the holes of the lugs.

Abstract: A pipe coupling comprising a sealing gasket to fit over adjacent ends of pipes to be connected end-to-end and a housing which clamps around the gasket, has the housing in the form of a cast metal or alloy band which substantially encircles the gasket and has at its circumferential ends opposed lugs between which a wedge portion of the gasket extends and which are connected by at least one clamping bolt engaged with retaining means, whereby the lugs can be urged towards one another to contract the band onto the gasket. The lugs grip the wedge portion as the band is contracted and prevent the body of the gasket from bulging outwardly between the lugs. Preferably the band is made of a ductile metal or alloy, e.g. ductile iron, and is slightly oval in its free state so that it assumes a substantially true circular form when fully contracted onto the gasket.

Abstract: A double-wall composite pipe comprises a permeable annulus structure separating impermeable inner and outer walls. The permeable annulus structure has micro-fractures formed therein that function to reduce the flow rate and pressure of fluids leaking through the inner wall to thus inhibit fluid leakage. The annulus structure resists the stresses produced by internal fluid pressures and other service loads. The inner and outer walls will remain permanently impermeable while the pipe annulus structure undergoes stress-induced dimensional changes. A coupler assembly mechanically connects each longitudinally adjacent pair of pipes together and comprises two semi-cylindrical half-couplers, a compressible seal ring, a cylindrical retaining sleeve, and a flexible boot that encloses and seals the assembled half-couplers. A leak detecting sensor may be located at the coupler assembly. A preferred method and apparatus for making the pipe and coupler assembly are also taught.

Abstract: A clamping assembly constructed to hold an electrical cable or tube in a fixed position includes retaining and clamping members. A first surface of the retaining member, which may be made from a compliant material, has raised and lowered portions in a particular pattern. One end of the retaining member has a face transverse to the first surface of the retaining member with raised and recessed portions defining a mating relationship with the raised and recessed portions on the first surface of the retaining member. The clamping member may be made from a springlike material and may be disposed in an open loop in an unconstrained relationship. The clamping member may be disposed in a longitudinal slot in the retaining member so as to be encased by the retaining member. The retaining member may be slitted to communicate with the slot for facilitating the disposition of the clamping member in such slot.

Abstract: A plastic pipe seal for dual wall plastic pipe includes a plastic single piece or multi-piece fitting formed of rigid plastic sheet. At each inlet to the fitting, two formed grooves are radial to the line of flow through the fitting. The groove closest to the fitting inlet mates with a corresponding groove on the pipe, which groove receives a mechanical retainer. A second radial groove spaced from the retaining groove holds a gasket sealing device which provides a seal between the inside of the fitting and the outside diameter of the pipe. The retainer can be an extruded or molded plastic or metal spring cut to appropriate size, or a dual durometer structure, which allows for compression to a solid retainer.

Abstract: A unisex coupler assembly is disclosed capable of providing a leak tight coupling for waveguides with axial alignment of the waveguides and rotational capability. The sealing means of the coupler assembly are not exposed to RF energy, and the coupler assembly does not require the provision of external flanges on the waveguides. In a preferred embodiment, O ring seals are not used and the coupler assembly is, therefore, bakeable at a temperature up to about 150.degree. C. The coupler assembly comprises a split collar which clamps around the waveguides and a second collar which fastens to the split collar. The split collar contains an inner annular groove. Each of the waveguides is provided with an external annular groove which receives a retaining ring. The split collar is clamped around one of the waveguides with the inner annular groove of the split collar engaging the retaining ring carried in the external annular groove in the waveguide.

Abstract: A pipe coupling has a housing which is split in a longitudinal direction and has inwardly bent end walls and a steel insert sheet of analogous design bridging the housing gap. With the aid of a closure with tensioning screws, the housing can be constricted in the manner of a pipe clip. A sleeve, enclosed at the end faces and the circumference by the housing and a steel insert sheet, and roughly C-shaped in cross-sectionis compressed in the circumferential direction and is brought to bear on the pipe wall. As a result of inherent recovery capacity, an annular insert, flexible in the circumferential direction but rigid transversely thereto, bears on the sleeve web and thereby holds the sleeve web in surface contact with the housing even when the coupling is pressure less. In combination therewith, sliding rings are preferably located between the end faces of the sleeve and the end walls of the housing, which sliding rings close the annular gap remaining between the end walls of the housing and the pipe wall.

Abstract: A pipe restraining member comprising a collar member, flanges disposed on the collar member for connecting the collar member to a support, the collar member and the support being adapted cooperatively to encircle a first pipe member, lugs disposed on the collar member for connecting the collar member to a collar assembly encircling a second pipe member, and discrete groups of protrusions extending inwardly from an inside surface of the collar member and adapted to engage an external surface of the first pipe.

Abstract: Two clamp members are formed to be fitted around the outer wall of a flexible sleeve when the ends of two pipes are located in the opening of the sleeve with adjacent edges of the two clamp members engaging each other in a clamped position for clamping the sleeve to the ends of the two pipes. Each of the clamp members has two spaced apart clamping ridges extending radially inward from its inner wall continuously between its two edges. The two clamping ridges of the two clamp members are located such that when the two clamp members are located around the outer wall of the sleeve and adjacent edges of the two clamp members engage each other, the two clamping ridges of the two clamp members form two spaced apart clamping ridges extending 360 degrees around the inside walls of the two clamp members for engaging the outside wall of the sleeve forming a seal between the sleeve and the ends of the two pipes when located in the opening of the sleeve.

Abstract: A connector system for joining a male tube to a female tube comprises an axially-split nut which extends across the region being joined. The female tube is externally threaded and mates with internal threads on one end of the axially-split nut. A shoulder formed in the other end of the axially-split nut engages a retaining ring formed on the male tube. A compressible seal ring is disposed between the end of the female tube and a second shoulder of the retaining ring. An external nut is placed over the axially-split nut to hold the entire assembly together and provide a radially compressive force on the seal ring. An axially compressive force can be provided by turning the female tube to draw the female and male tubes closer together.

Abstract: A quick coupling for plastic pipe in which the ends of each plastic pipe are fitted with a metallic sleeve. The metallic sleeve is contoured with a hollow boss at one end and spaced apart from the boss is a radially extending circular groove. The metallic sleeve may be counterbored. The metallic sleeve may be embedded in the plastic pipe end by various heat forming techniques. Further, the plastic pipe may be internally threaded. Then a hollow plug of the same plastic as the pipe with external threads at one end is contoured to form a collar with the face of the unthreaded end. The collar is recessed to receive the boss. The metallic sleeve is fitted over the threads and seated with the boss in the recess of the collar. The plastic plug is then threadably engaged in the end of the plastic pipe and sealed with an o-ring. Two pipes, each having a metallic sleeve thereon, when aligned are coupled together by a mechanical clamp having keys which fit the circular groove of each pipe.

Abstract: A pipe coupling has a cylindrical housing which is split in the longitudinal direction and has inwardly bent end walls and a steel insert sheet of analogous design bridging the gap in the housing. With the aid of a closure with tensioning screws, the housing can be constricted in the manner of a pipe clip, such that a sealing sleeve positioned between the housing and a pipe is compressed in the circumferential direction and brought to bear on the pipes to be sealed off. The closure is offset in the circumferential direction with respect to the housing gap, and the end section of the housing projecting through the region of the tensioning screws is overlapped by a slideway anchored on the other end section. By this means, dimensional stability is increased without increasing the wall thickness, or the constrictability of the housing is guaranteed despite an increased wall thickness.

Abstract: A Y-shaped, clam shell type coupling device for use in automotive vehicle exhaust systems to couple two exhaust pipes that are connected to an engine manifold to a single exhaust pipe that is connected to a catalytic converter or exhaust silencing device. The clam shell type coupling comprises a pair of mirror image half shells which combine around the exhaust pipes in fluid tight fashion to form two generally tubular intersecting chambers. One of the chambers may provide a direct pathway from one of the manifold exhaust pipes to the single exhaust pipe.

Abstract: A jug and dispensing valve therefore in which the jug, when positioned in a dispensing position, has a threaded dispensing neck extending horizontally from a location of a side wall adjacent the bottom wall, a second neck extending horizontally from a location of said side wall near the top and a third neck extending vertically from said second neck, said third neck having an upper free end substantially co-planar with the top wall and providing access for refilling, said dispensing valve affixed to the threaded dispensing neck and including a liquid receiving member, a split threaded sleeve for securing the liquid receiving member to the jug, a collar for holding the split threaded sleeve together and a spigot for controlling the flow of liquid through the liquid receiving member.

Abstract: A quickly attachable longitudinally split coupling structure to connect a pair of pipe ends for a leak proof connection, the coupling structure requiring only a tapping tool for installation or removal.

Abstract: A pipe repair or joining collar comprising a pair of rigid arcuate casing members (10) which may be drawn together around a damaged pipe or a pair of pipe ends with the interposition of one or more elastomeric arcuate seals (13) and wedges (17) located between the casing members and the seals and adapted to slide inwardly and generally tangentially to force the seals radially inwards to ensure sealing engagement with the pipe or pipe ends, mutually abutting longitudinal resilient sealing strips (16) projecting, at least in part, from opposed faces of the wedges (17) in a manner such that in at least one region of each pair one of the sealing strips is substantially flush with its associated face whilst the other projects from it so that during assembly the projecting strip may ride laterally onto the flush strip to ensure lateral alignment of the casing members.

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: A clamp suitable for joining a pair of tubular members such as truck exhaust pipes including a metal band having a reinforcing bar at each end wrapped more than one turn, each wrapped reinforced end forming at least one hold for receiving, threading, and securing a set of bolts and nuts. The band is preferably formed from an aluminized steel, and the reinforcing bars may be non-plated. Embodiments using only the wrapped ends without reinforcing bars, folded rims, beading, and bolt-securing plates are also disclosed.

Abstract: A T-branch formation device using two identical side members to form a snap-on saddle around a resilient plastic pipe and a screw-in coupling cutter which cuts through resilient piping, retains the cut piece, and simultaneously provides a threaded surface for attaching a branch tubing which forms a leak-proof connection.

Abstract: A threadless coupling for pipes has a cylindrical coupling body having longitudinally-extending slots or sections along the entire length thereof, a pair of grip sections forming grooves facing oppositely from each other on the outside of the edges of both ends of the opening section of the coupling body, and a grip case which is slidable fitted for coupling on the pair of grip sections. The grip case is tapped with a hammer of the like to slide onto the pair of grip sections, thereby compressing the coupling body around the conduits to be coupled by decreasing the gap between the pair of grip sections and accordingly reducing the diameter of the coupling body.

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.