Abstract: A connection structure and method comprising the steps of providing a cylindrical joint member for connecting a first pipe and a second pipe inserted into opposite ends of said cylindrical joint towards the center of said cylindrical joint member and holding said pipes in such a position that their ends are separated only by a narrow gap, and compressing both ends and the center of said cylindrical joint member to form airtight seals between said first and second pipes and the ends of said cylindrical joint member and also between the ends of said first and second pipes and the middle part of said cylindrical joint member.

Abstract: A connector for joining pipe ends is provided having heat expandable or contractable memory metal rods individually connecting a wedge ring and gripping wedge collet. Each ring and collet are in abutting relationship and coact to grip a pipe end.

Abstract: Two tube systems, each comprised of two or more concentrically arranged metal tubes, are positively and electrically conductive interconnected through a coupler sleeve system composed of a corresponding number of concentrically arranged coupler sleeves of slightly larger diameter such that ends of the sleeves of the coupler sleeves are threaded upon ends of the tubes of the tube systems to be interconnected.

Abstract: A method for joining insulated conduits is disclosed, in which the bared ends of the medium-carrying pipes are first interconnected in a per se known manner and a union piece is thereafter placed around the resulting joint, such that the union piece has an overlap on the outer side of the conduits to be joined and forms a mould for foaming an insulating material of cellular plastic in the joint. The union piece is a relatively rigid, circumferentially resilient plastic tube which is slotted throughout its entire length and, before being applied around the joint, has an inner diameter which is smaller than the outer diameter of the conduits. After the union piece has been applied around the joint, a strip is placed on the slot of the union piece throughout substantially the entire length of the slot, said strip consisting of a mouldable, curable plastic material which by curing is bondable to the union piece, and which is thereafter cured so as to be bonded to the union piece.

Abstract: A pipe and sleeve telescoped joint with the pipe and sleeve in sealing engagement and keys embedded in both pipe and sleeve at their interface. The size and number of the keys are calculated from the size and strength of the pipe. The sleeve is sized and its strength selected from the strength of the pipe, and the sleeve ends are shaped to hold the joint circular when it is made. The apparatus includes means for holding the midportion of the sleeve circular when creating the joint, and for cooperating with the sleeve ends to keep them circular. The sealing engagement is created by firing a propellant into a substantially incompressible medium, like water, held by the apparatus in a cavity about the sleeve, and a piston separates the explosive propellant from the pressure medium.

Abstract: A coupling for joining sucker rods in an oil well pump and the like, having a metal sleeve with an axially threaded bore and an exterior coating on the sleeve producing a cylindrical coupling, with the coating being an abrasive resistant thermoplastic hydrourethane polymer.

Abstract: The invention refers to a releasable tubular clamp for connecting cylindrical or profile tubes. In order to provide a releasable tubular clamp for interconnecting cylindrical or profile tubes wherein the press force is increased and after assembly a greater degree of compactness and stiffness is present, a longitudinally running longitudinal rib (1) open towards the interior is provided which prior to clamping exhibits a U-shaped (ear-shaped) cross section and whose legs after clamping abut in parts whereby the clamping jacket in an adjoining area exhibits a cross section deviating from a circular contour.

Abstract: A connecting member for use in connecting a corrugated conduit to another member. The connecting member has a wall defining a cylinder with circular ends. At least one of the ends is a conduit entry end. A resilient finger is mounted by one end in an opening in the wall. The free end of the finger has a projection extending radially of the wall. The conduit is mounted in the connecting member and held there by the projection cooperating with a rib of the conduit.

Abstract: An improved pipelock comprising a first pair of rings facing each other axially, with the inner diameter of each ring at the outer face being smaller than the inner diameter of each ring at the inner face, each of said first pair of rings comprising at least two circumferential parts, means to restrain longitudinal movement of facing circumferential parts outwardly from each other, at least one second ring comprised of at least two circumferential parts connected to each other, outwardly surrounding said first pair of rings, and constraining outward radial movement of said first pair of rings, at least one third ring comprised of at least two circumferential parts, having an outer surface conforming to the inner surface of said first pair of rings, and at least one waffled fourth ring comprised of at least two circumferential parts having an outer surface in contact with the inner surface of said third ring.

Abstract: A joint is formed at adjacent ends of tubes (5, 7) by inserting the ends of the tubes into opposite ends of sleeve (1) until the tube ends engage centrally positioned inwardly extending protrusion (3). The sleeve (1) is crimped inwardly into frictional engagement with the tubes (5, 7), only at the middle portion and at the end portions of the sleeve to partially deform the sleeve and the tubes at the adjacent ends of the tubes and at positions of the tubes displaced from the tube ends.

Abstract: Joint and joint components designed to withstand axial compressive loads join a pair of pipe sections end-to-end, the adjacent ends of the sections being threaded. A coupling member for connecting the threaded adjacent ends of the pipe sections includes threads interengaged with the threads on the adjacent ends of the pipe sections. An abutment member located between the outer ends of the pipe sections is shaped so that the ends of the pipe sections abut against opposite sides of the abutment member. Each pipe section includes a shoulder which is formed integral with and extends circumferentially around the section, the shoulder including an angled surface which faces the angled surface on the other pipe section and is oriented at an angle substantially the same as the surfce on the other pipe section, each surface terminating at a circumferential edge which is closer to the edge on the other pipe section than is any other portion of its respective surface.

Abstract: A tubular joint or connector of box and pin members is disclosed having first threads provided on a taper with respect to the axis of the joint and second threads which are cylindrical and axially separated from the first threads. The first and second threads are radially separated by a step region. Two metal-to-metal seals of complementary engaging sealing surfaces are provided, one adjacent the end of the pin member, the other axially disposed between the two threads. Reverse angle torque shoulders at the end of the pin member and the interior termination of the box member and hooked threads further characterize the joint and box and pin members.

Abstract: A pipeline is fabricated by forcing the end portions of joints of pipe telescopingly into a coupling member and into fluid tight relationship respective to one another. The coupling member is in the form of a sleeve having opposed cavities which receive adjacent marginal ends of the pipe joints therewith. Each marginal end of the pipe joint is forced into the cavity of the sleeve with great force such that the sleeve cavity holds the pipe ends together with a strong friction fit. Each cavity of a sleeve has a first maginal length with blades formed about the circumference thereof, and another marginal length with a resilient sealing member formed about the circumference thereof, so that both the blades and the seal member are deformed as one of the marginal pipe ends is forced thereinto, whereby the metal bladed part of the sleeve engages and rigidly holds the pipe respective to the sleeve, while the seal part of the sleeve prevents leakage of fluids therethrough.

Abstract: A coupling for joining two pipe sections, having end terminals, comprises:(a) a collar forming a through opening and having bore surfaces bounding said opening to closely receive a pipe section so that the collar is movable axially of the pipe section into coupling position spanning a joint formed by said end terminals,(b) the collar having associated well means communicating with said surfaces and extending outwardly thereof for reception of flowable cement,(c) and means to pressurize said cement supplied to said well means to cause flow of the cement between said surfaces and said pipe sections to bond the collar to the sections and to seal off therebetween.

Abstract: A pipe-supporting clamp is disclosed in several embodiments adapted to be permanently embedded in the masonry floor of a building structure for supporting a pipe extending through the center of the clamp. The device has anchor means formed therewith which are surrounded by the masonry material to prevent movement of the device in the floor. A means is also provided adjacent one end of the device for forcing a portion of the interior wall of the device into engagement substantially all around the circumference of a portion of the pipe to clamp the pipe against movement within the device.

Abstract: An apparatus comprising a sleeve having a first end, a second end, and a center portion; and a lockring slidable on at least the first end. The second end could be the mirror image of the first end or could be any fitting desired to be attached to a tube section. The first end has a constant radius annular chamber such that the end of a tube section slides easily therein initially. The exterior of the first end of the sleeve has a "REVERSE TAPER" configuration such that the exterior radius of the sleeve is least near the center portion and increases generally outward therefrom to a maximum near the end of the sleeve. When the lockring is forced onto the exterior of the sleeve, the sleeve and tube section are deformed the least amount near the center portion, the amount of deformation than generally increasing outward therefrom to a maximum near the end of the sleeve.

Abstract: Described herein are composite devices comprising two members. The first member is a heat recoverable driving member and the second is a metallic member associated with the first in such a way that upon heat recovery of the driver, the second member is dimensionally altered to engage a substrate. In one embodiment, useful for example as a composite coupling for joining cylindrical substrates, the driver comprises a tubular heat recoverable compression sleeve having a generally uniform interior surface. In this embodiment, the second member comprises a tubular insert snugly, and concentrically disposed within the sleeve. Although both its interior and exterior surfaces may be uniform, preferably one or both surfaces has a weakened portion to facilitate its deformation or bears integral radial teeth or a combination thereof. Upon heat recovery of the compression sleeve, the insert is compressed about the substrate.In another embodiment, the driver is positioned internally of the second member.

Abstract: A plastic coupling pipe part for connecting corrugated plastic pipe comprises abutment projections and a radially resilient displaceable lip, carrying an inwardly directed cam. The lip is surrounded by openings delimited by a rectangular incision in the plastic pipe. The transition part connecting the lip with the pipe wall has a smaller width than the end edge of the lip.In a pipe connection with such a coupling pipe part the coupling cam engages a flank of a wave valley of a corrugated pipe.

Abstract: A pipe connecting arrangement involves two pipes of different diameters which are inserted into one another with radial play. The radial space between the two pipes is filled with a packing sleeve and the connection is completed by one or two U-shaped tension hoops inserted through one or two slots in the larger diametered pipe and engaging the packing sleeve.

Abstract: This invention provides novel thermochromic compositions which exhibit distinct color changes at temperatures in the range of about 165.degree. C. to about 240.degree. C. The compositions comprise basic copper carbonate and a sulfur compound. Paint formulations containing these novel thermochromic compositions or complexes of copper and sulfur-containing organic acids are also provided. The compositions are useful with heat-recoverable memory metal couplings to prevent overheating of the couplings during installation.

Abstract: The substantial change in modulus with temperature of certain materials, especially memory metals, is used to make a novel connector by forcing a band made from such a material in its low modulus state up an external tapered portion of a tubular coupling member so as to deform the band which remains in position about the coupling member. To make a connection one or more substrates is(are) positioned inside the tubular coupling member and the band is brought to its high modulus state whereupon it contracts and deforms the tubular coupling member and forces it into firm connection with the substrate.

Abstract: A tapered tap suitable for producing tapered pipe threads includes a body provided with a helical thread form having a tapered cross-sectional shape. The thread form is defined by a pair of converging flanks which form a thread crest and thread root respectively lying along inner and outer converging axes. In one embodiment, a portion of the thread crest is radially offset from the outer axis and generates a tapped female thread in which a portion of the tapped thread root is of reduced diameter; the thread root of reduced diameter firmly engages and deforms the crest of a standard male tapered thread to assure that at least a portion of the helical tunnel between the male and female threads is completely sealed to prevent fluid leaks therethrough. In another embodiment, a portion of the thread root of the tap is also radially offset from the inner axis to generate a tapped thread crest of reduced diameter which deforms upon engagement with a standard male tapered thread, thereby improving the seal.

Abstract: In a pipe coupling including a housing having a bore for receiving the end of a pipe, and clamping means for clamping the pipe to the housing, the clamping means is formed on its inner face with a first circumferentially-extending recess for receiving a first clamping ring, and with a second circumferentially-extending recess axially spaced from said first recess for receiving a second clamping ring of a different hardness than the first clamping ring, to thereby enable the coupling to be used for coupling pipes of different hardnesses by selecting the appropriate clamping ring and inserting it into its respective recess.

Abstract: A connector for latch type plugs has an inner member and an outer member with a resilient member between them. If a first plug is inserted in the connector, it overrides the central line as its latches engage recesses in the inner member. When the second plug is inserted into the connector, its front edge abuts against the front edge of the first plug. Further movement of the second plug causes corresponding movement in the first plug and the inner member, thereby compressing the resilient member. When the latches of the second plug have engaged with the corresponding recesses, the pressure of the resilient member, transferred via the inner and outer members, holds the front edges of the two plugs together.

Abstract: A corrosion resistant tube assembly is disclosed comprising a corrosion susceptible metal tubing having an outside surface, an inside surface and end surfaces. Peripheral end portions of the tubing are provided with an overlay of corrosion resistant metal extending along a portion of the outside surface and across the end surfaces of the peripheral end portions of the corrosion susceptible metal tubing. The overlay has an inside surface and an outside surface provided with threads at a depth less than that which would expose the outside surface of the corrosion susceptible tubing. The assembly also includes a corrosion resistant, tubular metallic liner having an outside surface disposed adjacent the inside surface of the corrosion susceptible metal tubing, and end surfaces extending beyond the end surfaces of the corrosion susceptible metal tubing.

Abstract: A gangable wireway assembly including a plurality of generally U-shaped troughs and trough covers utilized as either tandem sections or as fittings which connect the tandem sections in an elbow, tee or cross configuration. Trough covers have upstanding lips at opposite ends and drip hood flanges running along longitudinal margins which overlap flanges on the U-shaped trough. The tandem section covers include a reverse bend on one drip hood flange to interlock one margin of the cover with the trough. Adjacent trough ends are nestingly received by a connector and adjacent trough covers are overlapped by a connector cover at the juncture of adjacent cover sections. The connector cover includes a recess receiving the lips of adjacent covers and includes flanges in overlapping relationship with the drip hood flanges. One flange on the connector cover also includes a reverse bend to interlock with the associated drip hood flanges.

Abstract: The present invention relates to slip joints for use with dampers, ducts, and mounting surfaces, as for example, fire dampers which are to be mounted through walls or other fire proof partitions and which are to have ducts mounted thereto. A novel duct-damper interface adaptor is disclosed which is constructed entirely from integral sheet material and which is slipped onto the inwardly depending flanges of a damper during the assembly of that damper. The damper adaptor unit is then ready to receive a complementally formed duct which is slidingly fitted thereon. This embodiment provides adaptors which are inexpensive, easy to manufacture, readily installable at the job site and provide superior advantage to the final damper-duct installation.

Abstract: Described herein are composite coupling devices, particularly useful for joining cylindrical substrates. The device comprises a tubular heat recoverable member referred to as a driver that acts upon a second member, usually a sleeve concentrically disposed within the driver, causing the latter to engage the substrate. According to the present invention, the driver has a discontinuous or non-closed cross-section perpendicular to the axis about which it recovers allowing a high percentage of recovery to be imparted to it.

Abstract: Arrangement for demountably sealing two concentric metallic tubes in an ultra high vacuum system which facilitates remote actuation. A tubular seal includes integral spaced lips which circumferentially engage the metallic tubes. The lips plastically deform the metallic tubes by mechanical forces resulting from a martensite to austenite transformation of the tubular seal upon application of a predetermined temperature. The sealing force is released upon application of another temperature which causes a transformation from the stronger austenite to the weaker martensite. Use of a dual acting sealing ring and driving ring circumferentially contacting the sealing ring is particularly applicable to sealing larger diameter concentric metallic members.

Abstract: This invention relates to a threaded pinch-bolt sleeve which is utilized in conjunction with an associated retaining nut to hold a replacement shock absorber within the cylindrical housing of a vehicular suspension system of the type commonly referred to as a MacPherson strut suspension system. The sleeve includes a generally cylindrical main body portion which is placed over the upper portion of the cylindrical housing. A pinch bolt attached to the outer side wall of the main body portion is tightened to secure the sleeve to the cylinder. The upper end of the sleeve is provided with either internal or external threads to receive a retaining nut to hold the replacement shock absorber in the associated cylindrical housing.

Abstract: An improvement in an injection bulb device in an assembly for administration of parenteral solutions is disclosed. The device is a tubular elastomeric member having an enlarged intermediate section whose bore is larger than the bores in the two end sections. A plurality of flat-surfaced projections or rings extend inwardly from the walls of the bores in the end sections which compressively grip the end of a rigid needle adapter and flexible tubing inserted respectively within these end sections. The end of the tubing flares outwardly into the enlarged bore of the intermediate section and this configuration assists in increasing the strength of mechanical engagement between the tubing and the injection bulb.

Abstract: A stoma drainage appliance having a fluid collecting pouch constructed of sheets of flexible material with two internal sheets sealed together at spaced intervals to provide a valve across the center of the pouch precluding upward flow of fluid between the two internal sheets. There is at least one unsealed space between the seals located so as to provide a direct, straight path from an inlet opening of the upper section of the pouch to the lower section of the pouch. The stoma drainage appliance further includes an outlet spout connected at the lower section of the pouch. The spout has a tapered opening with an inlet neck section of oval cross-section and an outlet end section of circular cross-section. The spout is made of flexible material for clamping along the neck section to close the spout and includes a cap for attachment to the end section thereof.

Abstract: A novel coupling member which comprises a hollow, generally tubular metal member which is heat-shrinkable or can be rendered heat-shrinkable in the radial direction and is provided on its inner surface with at least three teeth in the form of radially extending rings, the distance (t) between any pair of adjacent teeth being less than 0.95 d and less than 4 w, where d is the internal diameter of the tubular member, and w is the wall thickness of the tubular member, there being at least one tooth either side of the tooth nearest the center of the tubular member, the distance from the center of the member to the tooth nearest the center of the member being from 0 to 0.3 d and the distance between the two teeth adjacent the tooth nearest the center of the member being more than the smaller of 0.4 d and 3 w. Such a coupling member can be expanded by mandrel expansion methods without danger of damaging the teeth.

Abstract: A hose coupling comprising a coupling body and coupling means secured to the ends of a hose. A circumferential groove formed in the coupling means cooperate with depressible spring pressed latches pivotally mounted on the coupling body. A hook portion is provided on the said latches to engage with the said groove to retain the parts of the coupling in assembled relationship. To disassemble the coupled parts, the spring pressed latches are depressed thereby lifting the hook from the groove thus enabling the coupled parts to be disconnected from one another.

Abstract: A coupling for tubes, pipes or the like, fabricated of heat recoverable metal that is treated so that it will contract when heated above its transition temperature spontaneously expand when cooled to its transition temperature to permit it to be installed or removed from the pipes.

Abstract: A down spout adaptor assembly includes a down spout adaptor and a storm sewer entry adaptor, the down spout including a tapered asymmetric tube having an arcuate bead projecting outwardly around the lower end thereof, the storm sewer entry adaptor including a cylindrical structure having an arcuate bead around the upper portion thereof, the arcuate bead on the down spout adaptor being insertable into the arcuate bead on the entry adaptor.

Abstract: A coupling of heat recoverable metallic material for joining tubular members and other cylindrical substrates. The couplings include a hollow member having at least one opening for receipt of a tube. This hollow member is designed to eliminate relative motion between the ends of the member and the tubing during flexure of the tubing and coupling assembly. This elimination of such relative motion is accomplished by incorporating thin-walled sections at each end of the hollow member with collars located outwardly of the thin-walled sections. The collars tightly grip the tubing to prevent relative motion between the collar and the tubing while the thin-walled sections allow flexural response of the coupling to the flexure of the tubing itself.

Abstract: A sleeve having first and second interior surface portions. The first surface portion is threaded and communicates with one open end of the sleeve, and the second surface portion is smooth and communicates with the opposite open end of the sleeve. A bore is formed through the sleeve and the second surface portion thereof, and a set screw is threaded into the bore. The sleeve is first slipped, and then threaded, onto a first conduit, the conduit being first received by the smooth interior surface and then by the threaded interior surface. The end of a second conduit is then disposed adjacent the sleeve, and the sleeve is screwed back off the first conduit onto the second conduit until the first conduit is received by the smooth interior surface and the second conduit by the threaded interior surface. The set screw is threaded against the first conduit.

Abstract: A tubular body portion has an internally threaded portion and a cylindrical portion and includes an annular recess portion therebetween. The annular recess portion includes a first shoulder adjacent the threaded portion and a second shoulder adjacent the cylindrical portion. A circumferential cutting edge portion is provided at the juncture of the second shoulder and the adjacent cylindrical portion. A first conduit to be joined is extended through the cylindrical portion into substantially abutting relation with the first shoulder. A suitable expanding tool expands the end portion of the first conduit outwardly into the annular recess portion and against the cutting edge to produce a distinct gouge or circumferential cut therein. The coupling remains rotational relative to the first conduit with the end portion thereof expanded into the annular recess portion. A second conduit to be joined is threadedly advanced into the threaded end portion of the coupling by rotation of the coupling.

Abstract: The combination of a spring metal retainer ring with a pipe or conduit fitting having an annular seat for accommodation of the retainer ring, and further having a cylindrical passageway therein coaxial with the ring for receiving a pipe or conduit through the ring. The retainer ring includes an annular band which has a plurality of circumferentially spaced tabs projecting radially outwardly at an obtuse angle with respect to the plane of the band and projecting axially with respect to the axis of the band. The retainer ring further includes a plurality of circumferentially spaced, radially inwardly directed tabs connected thereto, and extending in the opposite axial direction from the direction of axial extension from the band of said first mentioned tabs.

Abstract: A pipe wall casting for installation in a poured concrete tank wall. The length of the wall casting is equal to the wall thickness, and the ends of the wall casting are grooved or shouldered for use with standard split-clamp couplings. A radially spaced annular shroud surrounds each end of the connector to provide an access well having clearance for installing or removing a split-clamp coupling. An integral water-stop flange around the outside of the shroud has outwardly extending tabs provided with rigging holes for mounting the wall casting on a free-standing support structure independently of the formwork for the concrete wall.

Abstract: A lockring tube joint, including an inner and an outer axially overlapping tube member, and a lockring having internally an initial cone frustum zone joined at its smaller end to a cylindrical zone, and a subsequent cone frustum zone joined at its larger end to the cylindrical zone; the tube members being dimensioned to undergo corresponding radial compression in the regions of the cone frustum zones upon assembly of the lockring thereon. Other embodiments of the lockring being provided with additional cone frustum zones and cylindrical zones, and other embodiments of the tube members having localized ribs to provide corresponding localized constriction for increased bonding and sealing engagement between the tube members.

Abstract: The present invention provides a coupling member for joining two generally coaxial, tubular members such as an electrical conduit. The coupling member includes internal left hand threads at one end and internal right hand threads at the other end with an annular groove therebetween. One end of a first conduit is provided with two sets of axially spaced apart external left hand threads. The coupling member is rotated so that the left hand threads thereof matingly engage the first set of left hand threads on the conduit and then is temporarily locked by engagement of the second set of left hand threads. The first set of left hand threads on the conduit will then be in the annular groove defined between the left and right hand threads of the coupling member. A standard length of a second conduit having external right hand threads thereon may then be matingly engaged with the right hand threads of the coupling member.

Abstract: A coupling for tubes, pipes or the like, fabricated of heat recoverable metal that is treated so that it will contract when heated above its transition temperature spontaneously expand when cooled to its transition temperature to permit it to be installed or removed from the pipes.

Abstract: Dual conduit drill stem member includes pipe having two piece tube therewithin affixed to pipe at outer ends and inner ends coupled by composite elastomeric sleeve and telescopic metal coupling, adjacent members being connected by threaded tool joints on pipe ends and compression sealed telescopic joints on tube outer ends.

Abstract: The tensile and compressive strength characteristics of pipe joints, particularly those adapted for use in oil well casings, are improved by a novel thread configuration on the mating pipe and coupling members. The threads are symmetrical, round threads having relatively large radius crests and roots. They include flank portions between the respective crests and roots disposed on angles not greater than angles of repose of the joint materials.Pipe joints employing the described thread configuration are easier to fabricate and are capable of more rapid make-up while the danger of cross-threading and jamming is minimized.

Abstract: A coupler or fitting for connecting ductile tubes or pipes includes a coupler body having one or more ports therein, and a ferrule which is friction-fitted within each port, the ferrule having a radially-inward flaring lip for biting into and locking a tube inserted therein and for creating a seal between the tube and the body, and a radially-outward flaring lip for biting into and locking the ferrule within the body.