Abstract: A method and pipe connecting piece for connecting a pipe to a fluid port, such as another pipe. The pipe connecting piece has an end portion for insertion into the bore of a pipe-end, an intermediate portion of larger diameter than the end portion, an attachment means for attaching the connecting piece to a fluid port, and a sleeve.

Abstract: A conductor tieback connector (T) thus having a tubular body (12) connectible to the lower end of a conductor or a string of conductors (C), a downwardly extending funnel (20) with two bearing surfaces and a tapered guide (24). The tapered guide (24) aids in initial stabbing of the connector (T) over a wellhead (W) and the two bearing surfaces (26, 30) operate on the outside of the wellhead (W) to force the tieback connector (T) into angular alignment under the influence of the weight of the conductor string. Seals (14, 16), located between the tieback connector (T) and wellhead (W), are compressed with axial movement of the tieback connector (T). A two-piece internal floating bushing (42, 42a, 42b), threadible (50, 52) on the interior surface of the tieback connector (T), is moved within the interior of the wellhead (W) where locking dogs (46) engage running tool grooves (40) in the bore of the wellhead (W) to clamp the tieback connector (T) onto the wellhead (W).

Abstract: The invention relates to a cuff for sealing joints of pipes, adhering inside at the two ends of pipes by a plurality of annular ribs formed in one piece with the rest of the cuff, made of elastic material and which is being pressed outwardly by expanding collars on its inner side in the region of the annular ribs. The invention is to be seen therein that in the unloaded state the profile of the annular ribs (1) forms in cross-section two curvatures (1a, 1b) towards the pipe wall. Thus it is achieved that the cuff retains its required position after it has been inserted into the pipe ends and being pressed slightly against the wall ends. Furthermore, a good sealing effect is being achieved by the new configuration of the annular ribs.

Abstract: An integrally threaded brass insert is molded into the discharge conduit of a condensate pan such that a steel drainage pipe can be threadably engaged to the insert without causing damage to the plastic discharge conduit. Bonding between the insert and the surrounding conduit is enhanced by providing a knurled surface on the outer periphery of the insert.

Abstract: A casing patch for providing a connection between two casing sections which comprise a body means adapted to fit over an existing casing in a well bore and guide the patch into place, a slip means actuated by upward movement of the second casing section to tightly connect the two casing sections, and a seal means also actuated by upward movement of the second casing section for sealing the connection to pressure of fluids, under conditions of high pressure and temperature. The seal comprises a lead ring inside the casing patch surrounding the existing casing and a cylindrical seal arranged below the lead ring and having a central section of a deformable material and two end sections of wire mesh.

Abstract: A coupler for interconnecting in fluid communication a pair of axially aligned flexible pipe ends, employs a tubular member for insertion between two sections of drainpipe to be coupled. A first thread is included on a first end portion of the tubular member for threaded engagement of a first one of the two sections of drainpipe, along with a second thread on a second end portion for threaded engagement of the second section. An integrally formed annular flanges in one form of the invention serves as a grip with which to manually screw the tubular member onto the drainpipe, while a cutback portion on the flange prevents misalignment of the coupled sections at the coupling when placed upon the ground. Tapered end pieces that screw onto each end to accommodate smaller drainpipe are provided in another form, with the threads of the tubular member matching the helically-corrugated plastic casing surface of conventional RV drainpipe.

Abstract: A grooved contracting connector is comprised of a resilient sheet member in the form of a coil having a plurality of circumferential grooves in the resilient sheet member coil. In one embodiment, an adhesive is applied to the inner surface of the resilient sheet member coil at least in the area between the grooves. Resilient sheet member coil is expanded to a larger diameter and held in the expanded condition by the heat sensitive bonding material. In connecting together tubular members, the tubular members are inserted, the connector is heated with the heat sensitive adhesive bonding material at least partially melting to allow the connector to contract firmly onto the tubing to form a tight and strong connection upon cooling.

Abstract: The present invention relates to a repair sleeve comprising a flexible, hose-like main part (1) and a spiral spring (2), which, when the sleeve is mounted in a pipe line, pretensions the hose-like main part (1) into sealing engagement against the inner wall of the surrounding pipe. The invention also includes an insertion device (4) for the repair sleeve, said device being a cylindrical body (5) mounted on wheels. At the ends of this body (5) there are latching means (7, 8) which are releasably fastenable to the ends of the spring (2). The latching means comprise a pin (7) biased to thrust out through the wall of the body (5) and into holes at the ends of the spring (2) wound round the body (5). Both pins (7) are simultaneously releasable with the aid of a linkage system (11, 13, 14, 15) on actuating the system. Eyes or cages (8) accommodating the ends of the springs are also associated with the pins (7).

Abstract: A joint for a water-carrying pipe system, e.g. for a garden spray, has a joint shoulder with a disk-like part for each pipe end to be connected. The two disk parts are arranged on either side of the hose passed centrally through the joint. On either side of the joint, the hose is connected to the pipe ends in that it is passed through an opening, whose internal diameter is somewhat smaller than the external diameter of the hose. Thus, the hose engages flat on the openings of the pipe ends, so that this in itself leads to a liquid-tight seal.

Abstract: A fitting formed with a circular flange formed coaxially with a spigot which is formed along its length with a series of frusto-conically shaped, axially spaced apart, sealing rings which are formed at their enlarged ends with respective annular holding rings. A metallic stiffener tube is received telescopically in the fitting to provide support against radial inward collapse thereof. The spigot may be formed adjacent the flange with an enlarged in diameter centering shoulder and may be formed at its extremity remote from the flange with a reduced in diameter stress relief nipple. A finishing sleeve is provided for telescopical receipt over a polyethelene pipe fitted over the spigot. Thus the spigot may be inserted into the end of the plastic pipe to expand such pipe to an expanded configuration.

Abstract: A fluid-tight flexible connection comprises couplings (27, 28) of soft elastic material, inserted in cavities (11) of hollow sections (12, 13), flexible parts (29) of soft elastic material arranged between the couplings, nipples (32) of hard material inserted in passages (33) of the couplings (27, 28) and in transverse passages (34) of the flexible parts (29), the nipples having barbs (40, 41) exerting an expanding action, and having an internal bore (39). The nipples (32) provide a fluid-tight connection between the several parts, namely the hollow sections (12, 13), the coupling parts (27, 28) and the flexible parts (29), which connection has a comparatively high tensile strength in the direction of the cavities (11) by virtue of the barbs. The adjoining hollow sections (12, 13) can hinge relative to each other owing to the elasticity of the flexible part (29), the maximum hinge angle being determined by the elasticity of the flexible part (29) and its length.

Abstract: An adaptor for connecting tubular members in an exhaust system. The adaptor comprises a tube having opposite ends that are curled outwardly in a generally circular configuration. The curled ends of the adaptor are press fitted within the ends of the tubular members of the exhaust system and each curled end is disposed adjacent an internal shoulder in the respective tubular member. Exhaust gases passing through the adaptor will heat the adaptor causing it to expand axially to bring the curled ends into firm contact with the respective shoulders, and the outer surfaces of the curled ends will flatten against the walls of the respective tubular members to provide a tight seal between the adaptor and the tubular members.

Abstract: In this pipe connection, the pipe end part (5) is pressed, as a result of cold-forming in zones, by means of a press ring (4) to be displaced axially, to form a positive leak-proof connection with a connection piece (1) inserted into the pipe end part and belonging to a pipe fitting (2). A sleeve (3) to be pushed onto the pipe end part is provided with an annular outer bead (7) and, when the press ring is pressed on, is deformed in such a way that the sleeve material is displaced radially inwards in the bead zone (8), the pipe end part and connection piece acquiring an annular recess (9). Moreover, the press ring (4) has at its rear end an annular inner bead (10) which at the same time displaces the sleeve material radially inwards at the rear sleeve end, as a result of which further pressing takes place at the end (12) of the connection piece (1). The gap between the pipe and connection piece is thus closed, so that no crevice corrosion can occur.

Abstract: A connector for joining the ends of flexible hoses comprising a one-piece moldable plastic body of light weight construction with hose engaging barbs at each end and supporting ribs in the midspan between the end barbs for sustaining the wall of the body against internal pressure, the one-piece body being free of the requirement to seal or sonically weld parts in final assembly.

Abstract: A sealable multimetallic sleeve for a rapid repair of a degraded tube caused by a detrimental chemical attack on the outside surface of the tube within and in a vicinity of a tube sheet in a steam generator, and the method for sealably inserting the sleeve in the degraded tube spanning the region of the degradation. The sleeve includes an inner member with equivalent mechanical properties of the degraded tube and an outer member metallurgically bonded to the inner member and resistive to caustic intergranular chemical attack causing tube degradation. The sleeve has an expanded portion at one end for positioning in the tube within the tube sheet and a multiplicity of grooves in and adjacent to the other end of the sleeve and braze material contained in the grooves.

Abstract: A device for connecting one liquid chromatography device to another. The device comprises an elongated, cylindrical shaft having an integral ferrule seat at each end of the shaft. A central bore extends through the shaft and the integral ferrule seats to permit liquid to pass therethrough. An enlarged collar is located centrally on the shaft to aid in attaching the device to chromatography equipment. Because of the short length of the device and minimum size of the central bore, the device has a minimum of interceding volume so that the efficiency of connected devices is uneffected.

Abstract: The sealing assembly includes a relatively soft rubber, tubular sleeve having an axial length sufficient to span the joint between hollow members, such as the corbel joint between a manhole frame and a manhole casing, and a sealing portion in each of the opposite ends. The outer surface of each sealing portion is compressed radially outwardly in sealing engagement with the interior walls of the manhole frame and the manhole casing by a generally circular hoop which fits into a groove provided in the inside surface of the sleeve. Each hoop has circumferentially movable, end portions and a radially inwardly extending bracket mounted on each end portion at circumferentially spaced locations. These brackets are adjustably pulled toward each other, to increase the circumference of the hoop, by tightening a nut threaded onto the outer end of a bolt connecting the brackets together.

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: The invention provides a method of joining two rigid tubes such as are used in drill stems wherein a nipple internal to the tubes is threaded and screws into at least one of the tubes, the nipple provided with a zone of reduced internal diameter which registers with a cavity in the internal bore of the tube and the zone of reduced internal diameter expanded outwards into contact with the tube to occupy the registering cavity in the tube and form a positive lock against tensile forces.

Abstract: A concentric insulating tubular conduit member for use in forming a conduit string such as a tubing string in a subterranean oil or gas well, is disclosed. Each individual conduit comprises concentric inner and outer members rigidly attached at each end. Both the inner and outer tubular members are welded to an intermediate bushing. At least one of the inner and outer members is upset to prevent weakening of the tubular joint at the welded connection. Adjacent tubular conduits can be interconnected by couplings having an outer surface flush with the outer periphery of the two interconnected joints.

Abstract: A coupling for flexible conduit of irregular configuration having an inner member adapted to be at least partially received within the flexible conduit. The inner member has a first conical surface. A locking member is retained on the inner member and is provided with a second conical surface which tapers radially inwardly and terminates in substantially a knife edge. When the inner member is received within the flexible conduit, the locking member may be moved such that the flexible conduit is squeezed between the knife edge and the first conical surface to seal the coupling to the conduit.

Abstract: An internal seal is disclosed between a manhole casting and mating manhole components such as concrete adjusting rings, the concrete manhole cone, or masonry structure of a similar configuration, to prevent water infiltration at this interface. The seal is formed by a continuous elastomeric ring. The ring is held in place by two stainless steel retaining bands. The elastomeric ring is pleated to allow an upward movement or lateral movement of the casting without impairing the sealing ability of the ring. The gasket can be installed either during construction or at any time after construction that there is found to be a problem with infiltration.

Abstract: Process and device for thermochemically drilling and separating SiO.sub.2 containing minerals by using such chemical compounds as fluxes in the combustion, which form in the melt silicates of low temperature melting range, primarily alkali metal silicates, the fluxes, mixed with catalysts and with metal powder serving as fuel, being passed through an oxygen lance or a core lance containing bundles of wires and ducts for passage of oxygen and flux at a high rate of speed, ignition being done semi-automatically or fully automatically. The use of the process and device according to the invention result in an increased effectiveness of the drilling and separation of the SiO.sub.2 containing minerals as compared to known thermochemical processes.

Abstract: Coupled tubular casings are obtained by placing a coupling piece, preferably a multilayered foil, on the inside of and overlapping two adjacent ends of tubular casings to be coupled and whose adjacent edges make an angle of 10.degree. to 80.degree. with the envisaged axis of the tubular casing, and sealing it.

Abstract: A fail-safe valve (10) for precluding contamination of fluid, such as milk, having passed through a main fluid flow line (12) from an input end, such as a milking claw, to a collection and storage tank is the subject of this application. A flushing conduit (46) through which flushing water or a sanitizing agent flows intersects the main fluid flow line (12).A pinching element (54) is provided with a first arm (56) for pinching closed the main line (12) at a resilient portion thereof down-flow from the intersection (48) of the conduit (46) with the main line (12). The element (54) also includes a second arm (58) which is angularly spaced from the first arm (56). The pinching element (54) is mounted for pivoting about an axis so that, when the element (54) is in its first position, the main line (12) will be pinched closed. With the element (54) in this first position, the flushing conduit (46) will not be occluded.

Abstract: A tank installation comprising a tank having at least one flexible wall arranged to rest on a rigid apertured partition, which per se does not form part of the invention. A flexible duct is joined to said wall and is intended to pass through the aperture in the partition. One end of the duct is connected to the flexible wall of the tank by a folded-over portion located inside the tank, and the other end of the duct is arranged for connection to another device that is to be placed in communication with said tank.The other device may be a second tank which also comprises a flexible wall with a flexible duct substantially aligned with said flexible duct of said first tank, and the extremities of said two flexible ducts are joined to a rigid pipe. These two tanks may be adjacent, the flexible duct of said second tank being directed towards the inside of the second tank and the rigid pipe is located within the second tank.

Abstract: An antidisconnect device is provided to prevent the inadvertent separation of medical fittings or connectors normally provided on the external end of a patient connected medical device such as an endotracheal or tracheostomy tube. The antidisconnect device basically comprises an annular ring having an internal diameter adapted to slip in close engagement over the normal outside diameter of the medical tubing. When assembled, the medical tubing is forced onto the tapered endotracheal tube connector thus distorting and enlarging the outside diameter of the medical tubing to a diameter larger than the internal diameter of the antidisconnect device. The antidisconnect device can then be moved toward the endotracheal tube tapered connector and can be forcefully held in position against the expanded diameter of the medical tubing. A strap extends from the annular ring to encircle any fitting or connector extending from the medical tubing to the patient and the distal end of the strap is affixed to the annular ring.

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: A plurality of sealed tubes, pipes or the like constituting the wall of a relatively large diameter pipe that is susceptible of being submerged and which has buoyant or semibuoyant walls. The tubes or pipes are arranged parallel to one another in a circular pattern with their axes parallel to the axis of the large diameter pipe and said tubes are sealed to one another along their length. A suitable clamping device is positioned upon said tubes or pipes to prevent them from collapsing over each other which acts as a positive stabilizer while maintaining said tubes or pipes in alignment in a circle.

Abstract: A hand-rail element has a metal pipe core, which is easily bent, and a soft plastic foam surrounding the pipe and having an outer surface contoured to simulate leather graining or the like. Several elements can be joined end-to-end by means of threaded nipples, and a hand-rail support is also disclosed, which permits assembly of these parts by a worker who need only use a portable power drill for on-site installation.

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: A sleeve is used in a tubing joint assembly, usually an inner sleeve, with a tube telescoped over this inner sleeve. An outer sleeve may optionally be telescoped over the tube and the entire assembly. One of the sleeves has a lateral shoulder transverse to the axis of the sleeve and with this shoulder terminating in a sharp angled peripheral rib. The outer sleeve is inwardly compressed by two dies which have interdigitated teeth. This compresses the outer sleeve, where used, and compresses the tube at the peripheral ribs of the sleeve. The interdigitated teeth on the dies assure complete compression all the way around the periphery, between the tube and the sleeve with a lateral shoulder being formed on the tube to act against the lateral shoulder on the sleeve and thus longitudinally retain together these parts. Also a fluid pressure tight seal is established primarily at the sharp angled peripheral rib and its junction with the facing wall of the tube.

Abstract: A coupler structure which facilitates the internal joining of a first length of hollow plastic pipe having internal corrugations defined by a plurality of alternating peaks and valleys to a second length of similar pipe or to some other structure. The coupler is molded from plastic to have at least one cylindrical end portion dimensioned for longitudinal receipt in the second length of tubing or other structure which is to be coupled to the first length. This one end portion includes a plurality of integrally molded cleats extending generally radially outward thereof. The cleats are selectively movable between first locking positions for lockingly engaging the second tubing length valleys and second non-locking positions which permits forced insertion of the coupler one end portion into the second tubing length. The cleats are hinged to the one end portion generally laterally thereof and are continuously urged toward the first position by the resilient nature of the plastic construction.

Abstract: An inner sleeve is used in a tubing joint assembly with this inner sleeve having a lateral shoulder generally perpendicular to the axis of the sleeve and with this shoulder terminating in a sharp angled peripheral rib. A tube is telescoped over this inner sleeve. An outer sleeve may optionally be telescoped over the tube and the entire assembly inwardly compressed by two dies which have interdigitated teeth. This compresses the outer sleeve, where used, and compresses the tube onto the peripheral ribs of the inner sleeve. The interdigitated teeth on the dies assure complete compression all the way around the periphery of the tube onto the inner sleeve with a lateral shoulder being formed on the tube to act against the lateral shoulder on the inner sleeve and thus longitudinally retain together these parts. Also a fluid pressure tight seal is established primarily at the sharp angled peripheral rib and its junction with the inner wall of the tube.

Abstract: A form for shaping a coat sleeve is a Plexiglass tube with a re-entrant, oval, elongated hoop having a pair of generally straight side portions that generally conform in shape with front and back crease lines of the sleeve. Between the side portions are semi-circular end portions; an end portion proximate the shoulder has a greater radius than the end portion proximate the wrist. The two semi-circular end portions are approximately tangent to the ends of the side portions abutting against them so that there is a smooth transition between each of the side and end portions. Because the tube is Plexiglass, it has spring properties that cause the hoop to return to its original configuration if the hoop is deformed less than the elastic limit of the Plexiglass. The outer edges of the side portions are spaced from each other by more than the separation between the front and back crease lines of the sleeve interior so that the side portions exert outwardly directed forces against the crease lines.

Abstract: The air muffler is primarily designed to be carried by a snug fitting hood respirator adapted to fit over the head of a person and to dispense breathable air into the hood in a minimum quantity of at least four cubic feet per minute, with a controlled noise level not to exceed 80 decibels, and with varying air pressure of from 11 to 25 pounds per square inch. The muffler utilizes a non-absorbent porous resilient fibrous filter media within a tubular casing provided with a series of ports, with the casing located entirely within a bag made from a non-absorbent porous fibrous material. An air pocket is provided between the portion of the casing provided with the ports and the bag. The air is directed from the source through the casing where it is restricted as it passes through the non-absorbent porous filter media prior to escaping through the ports in the casing into the air pocket where the air is muffled and is finally discharged into the hood through the porous fibrous bag.

Abstract: An Expansion Joint and Seal for Pipe includes an inner or outer seal for such joint, with a suitable sealing means sufficiently flexible to enable expansion of the joint while maintaining desired seal between the two joints.

Abstract: The invention relates to a method of joining together the ends of tubular metal members by explosive welding and to a permanent, self-aligning backing mandrel for use in the method. The mandrel is in the form of a tubular member having an outer face defining a cylindrical portion and an axially adjacent tapered portion, the maximum diameter of the tapered portion being greater than the diameter of the cylindrical portion. An annular shoulder extends outwardly between the cylindrical portion and the maximum diameter end of the tapered portion, which tapers inwardly away from the shoulder. One pipe end is outwardly flared and fits over the tapered portion of the mandrel and the other pipe end is non-flared and fits over the cylindrical portion, abutting the shoulder. The outer end of the flared pipe end overlaps the non-flared pipe, defining therewith an annular wedge-shaped outwardly-opening space. An explosive is located around this outer overlapping end and is detonated to weld the ends together.

Abstract: Two annular members, such as a sleeve and an abutment ring, are held together by a snap ring of generally V-shaped (or Y-shaped) cross-sectional profile with a pair of lips with a mirror-symmetrical confronting annular grooves of the members, the arms of the V (or Y) resting against tapering rims of the grooves. The rims and the arms terminate in beveled edges serving, upon the fitting of one lip of the connecting ring into the groove of one member, to cam the other lip radially inwardly for letting it snap into the groove of the other member as the two members are axially pressed together.

Abstract: Two sockets of electrically conducting material are provided, each of which has a free end face spaced from the other socket. A tubular coupling member is provided, which consists of plastics material in which reinforcements are embedded. Said coupling member is tightly fitted at each of its ends in one of said sockets and is surrounded by said free end face thereof and provided at each of its ends with an annular bead disposed in the respective socket. Said coupling member is formed with at least one interface which extends throughout the length of the coupling member and is defined by two abutting surfaces. A layer of insulating material surrounds said coupling member between said free end faces.

Abstract: An apparatus for intestinal anastomosis is formed from a pair of anastomotic ring members, each of which is secured to the free end of two tubular tissue members to be anastomosed, and a coupling tube of special design adapted to join each ring member and its associated attached tissue member to the other ring member and attached tissue member. A method for performing intestinal anastomotic surgery utilizing the apparatus above wherein each tubular tissue member end is pulled over the outside and through the inside of one of the ring members and thereby inverted as it is secured to fenestrated projections on the ring member.

Abstract: A method of repairing a tube in a heat exchanger by severing the tube and welding a sleeve inside the tube.

Abstract: A device for connecting one liquid chromatography device to another. The device comprises an elongated, cylindrical shaft having an integral ferrule seat at each end of the shaft. A central bore extends through the shaft and the integral ferrule seats to permit liquid to pass therethrough. An enlarged collar is located centrally on the shaft to aid in attaching the device to chromatography equipment. Because of the short length of the device and minimum size of the central bore, the device has a minimum of interceding volume so that the efficiency of connected devices is uneffected.