Abstract: A dielectric tube coupling includes a tube-like body having a circumferential ramp on the exterior periphery thereof. Opposed, non-conductive flared sleeves are disposed in surrounding relationship with the body so that the flared portions thereof closely engage opposite faces of the ramp. A threaded connector surrounds one of the sleeves and has an angled internal portion thereof in exteriorly abutting relation with the flared portion of the sleeve. The connector threadedly receives a coupling which includes an internal angled shoulder disposed in exteriorly engaging relation with the flared portion of the other sleeve. The tube-like body has one end sealingly disposed by means of an O-ring and a back-up washer in a seat included in the connector.

Abstract: A quick connect coupling assembly comprising a housing having an internal passage divided into a large entry end and a reduced diameter, coaxially aligned smaller passage for receiving a tubing adapted to fit into said passages and to snap into fluid-tight sealing relationship with said smaller passage. The assembly includes an improved retainer for preventing disconnection of the tubing and, optionally, a perforatable dust shield for sealing the entry passage of the housing during shipment and handling prior to insertion of a tubing conduit, and after perforation by the tubing upon assembly, then seals the tubing in the housing entry passage. A subassembly comprising the housing, retainer and dust shield is also disclosed.

Abstract: A box end casing connector is disclosed for use in connecting a string of casing sections for use in oil and gas drilling operations. The box connector is provided with an inside surface conventionally threaded with API standard threads and adapted to receive a pin member with mating threads. The pin member utilized is the threaded end of a subsequent casing section. The box connector is adapted to be integrally welded to the casing section and is further provided with a tapered shoulder and an externally beveled face to facilitate movement of the casing connector into and out of the bore of a restricted diameter blowout preventer.

Abstract: A fuel line receiver has a fuel passage terminating in an enlarged region. A retainer ring secures an O-ring in the enlarged region. The tip of a fuel line is curled to facilitate insertion through the retainer ring and the O-ring into the fuel passage. The O-ring sealingly engages the fuel line and the peripheral wall, and the tip of the fuel line is supported by the fuel passage and the retainer ring. A flange on the fuel line is engaged by a nut or a clip to hold the tip of the fuel line in the fuel passage.

Abstract: A coupling for swaged attachment to thin wall tubing. The coupling is a cylindrical body with a longitudinal axis and an inner peripheral wall. At least one groove is located in the inner peripheral wall. In one embodiment, the groove is substantially rectangular in cross section. The rectangular groove has a base and two side walls. The side walls meet the base to form corners. The corners have a radius of curvature of at least the depth of the groove. Alternatively, the cross section of the groove can be ramped in shape. The ramped shape groove has a base and two side walls. One of the two side walls meets the base at about 90.degree., and the second side wall meets the base at an angle substantially greater than 90.degree.. In a third embodiment of the invention, the groove is ramped with one side wall meeting the inner peripheral wall of the coupling sleeve at about 90.degree.

Abstract: A pipe connection for thin-walled, small-diameter metal pipes, in particular for braking lines, for fuel lines, and for hydraulic lines for motor vehicles, is provided with a sleeve (3) into which is sealingly set at least one first conically flared metal pipe (1) (so-called flare according to ISO 4038) in a bore cone (25) under the compression force of a tensioning body (8, respectively, 9) resting against the flare (23).In order to provide a pipe connection without screw parts and taking into account the narrow assembly or mounting quarters and in order to achieve a satisfactory sealing effect for the full duration of the operation of the connection, it is proposed to employ a sleeve (12) with an axially fixed annular channel (18). A radially partially thin-walled pressure bushing (15) is shifted onto the first metal pipe (1) up to resting at the flare (23).

Abstract: A quick-connect fitting assembly is disclosed for releasably connecting a pair of fluid conduits in fluid communication with one another. A socket portion on one of the fluid conduits is adapted for receiving the other fluid conduit inserted longitudinally into the socket portion. A laterally-extending protuberance on the inserted fluid conduit is longitudinally restrained by a retaining assembly generally adjacent the fluid socket, with the retaining assembly including one or more resilient spring of barb members longitudinally interlocked with the inserted fluid conduit. A pair of collar members are longitudinally interconnectable with one another, either by a threaded engagement or by a "bayonet-type" engagement, to releasably restrain the assembly in a connected condition.

Abstract: A hose intermediate retainer according to the present invention comprising a hose, an intermediate retainer having an inner cylinder and an outer cylinder, and a clamp is disclosed. Among the members, the outer cylinder is the best feature of the present invention. The outer cylinder comprises a first pressed portion having a smooth surface pressed circularly in the radial direction inwardly except its both ends, and at least one second pressed portion formed on the portion of the first pressed portion and depressing the outer surface of the hose by its inner periphery surface. Since no machining operations are required to manufacture the hose intermediate retainer, the manufacturing cost is reduced, in addition the hose intermediate retainer thus manufactured exhibits an excellent tensile strength.

Abstract: Disclosed are arrangements for maintaining an annular sealing gasket in some predetermined position intermediate and substantially coaxial with opposed annular sealing beads extending axially from each of a pair of coupling components. One disclosed arrangement comprises a retainer element having an annular end wall and a cylindrical side wall which define a cavity for closely receiving a flat annular gasket. A plurality of axial retaining legs facilitate retainer mounting to one of the coupling members so that the gasket is captured in the retainer cavity substantially coaxial with the one coupling member and with the associated sealing bead engaging one of the gasket faces. In a second arrangement, a plurality of axial retaining legs are formed integrally with the gasket member. The legs are positioned circumferentially about the gasket for engaging the one coupling component coaxial with the associated sealing bead.

Abstract: A coupling device utilizing first and second contiguous L-shaped coupling members affixed to terminal duct portions, and a slidable clamp having a T-shaped trough for gripping the L-shaped coupling members when slid thereover, locking them together to the close the duct. The clamp is slid away from the coupling members to rapidly open the duct.

Abstract: A fluid coupling (10) for an engine is described. The coupling includes a housing (21) threaded (22) for connection to the engine with a rotatable conduit means (11) which allows connection of flexible cooling fluid hoses in sealed connection with the housing. The housing can be turned into a corresponding threaded opening in the engine, particularly one located in a position which allows restricted rotational movement of the conduit means. This coupling is particularly adapted for use on heavy diesel engines, but could be adapted to any size engine, such as gasoline or diesel, for application in motor vehicles and the like.

Abstract: Clamp for joining two metal pipes, particularly of the type constituting the exhaust system of a vehicle engine, the ends in facing relationship of the two tubes to be joined having conical shape complementary bearing surfaces which project with respect to the cylindrical outer surface of the pipes. The clamp is constituted by an open ring of inverted V-shaped cross-section, the two ends of which ring comprise bearing elements for means provided for tightening and holding the ring in its closed position when the clamp has been placed over the pipes to be joined.

Abstract: A coupling assembly for mechanically coupling the plain end of a pipe, comprising a pair of standard forged flanges as basic components between which is disposed a wedge ring. One of the flanges is of the slip-on type and has associated with it a conical collet bore for receiving the wedge ring. When tension bolts assembled through the flanges are tightened the wedge ring is driven into the collet bore and tightly radially against the periphery of the pipe to thereby lock the coupling to the pipe.

Abstract: An improved fixing arrangement includes a planar flange having a mounting hole formed through an axial portion thereof, a radially expanded portion being formed in a portion of the peripheral surface of the mounting hole for receiving an annular resilient sealing member; and a pipe having one end provided with an pipe-diameter portion and a radially expanding annular portion. The radially expanding annular portion is engaged with the peripheral edge of the mounting hole which is formed on the back side of the flange to insert the pipe-diameter portion into the mounting hole. In addition, within the mounting hole, the end of the pipe-diameter portion is enlarged or a part of the pipe-diameter portion is radially expanded to press the resilient sealing member and to clamp the radially inwardly projecting peripheral edge of the mounting hole between the radially expanded portion and the enlarged end or radially expanded end portion, thereby fixedly connecting the flange and the pipe.

Abstract: A device for coupling to an object such as a pipe, particularly for joining pipes together, comprising a tubular sleeve of which at least one end portion has positioned on it a collar of dimensionally heat-recoverable polymeric material, and a shape memory alloy driver. Recovery of the driver is arranged to deform one or both of the sleeve and the object into contact with one another. Recovery of the collar is arranged to fill at least partially the radial space between the sleeve and the object so as to provide relief from transverse strain imposed on the joint between the object and the device.

Abstract: A threaded joint for oil-well pipe comprises a box having an internal thread, a pin having an external thread, a metal-to-metal sealing contact provided at the unthreaded tips of the box and pin, and a film of grease applied on the surface of the internal and external threads. The cross-sectional area of a void containing the screw axis left between the meshed internal and external threads is at least 0.6 mm.sup.2 per pitch.

Abstract: A pipe end fitting or coupling including an elongated tubular body having a bore at its first end and a counterbore at its second end with the counterbore being formed as a plurality of frusto-conical grooves and with each of the grooves converging toward its second end. A support sleeve is mounted within the bore and extends throughout the counterbore to form an annular chamber. A cylindrical pipe may be fitted into the annular chamber to form respective chambers with each of the grooves. The respective chambers are filled with a hardenable epoxy resin to complete the end fitting connection.

Abstract: A pipe connecting member of plastics material for pressurized fluid lines. The pipe connecting member has sleeve portions and a middle portion extending between and connecting the sleeve portions. The sleeve portions receive in a tightly sealed manner the pipes to be connected. The middle portion has an outer surface which is circular in cross-section. The middle portion has a wall thickness which changes continuously in circumferential direction and an inner surface with two inner surface area portions which extend eccentrically relative to the outer surface of the middle portion. The middle portion has the greatest wall thickness where it intersects the plane extending through the sleeve axes.

Abstract: An improved bulkhead mounting arrangement for a fluid coupling. The coupling body includes a centrally located externally threaded region having a predetermined axial length. First and second panel nut members are received on the threaded region for independent, selective axial movement thereon. One nut is received on either side of the bulkhead or panel so that axial adjustability of the mounting position is advantageously provided.

Abstract: The invention concerns a steel tube threaded joint particularly useful in the petroleum industry of the type in which the male element (3) and female element (1) are combined by threading (2, 4) wherein a portion of the surface of each thread is forcefully applied to the status of screwing to the thread of the outer element. A first element (1) of the joint has a composite structure and has on at least a certain length of its thread a lining of synthetic material whose volume and shape correspond exactly to the volume and shape of the existing clearance of the screwing status between the metal part and composite element (1) and the second element (3) having dimensions at the limit of the machining tolerances which allow the greatest possible clearance in the assembled state of the joint.