Abstract: A seal assembly for providing a primary metal-to-metal seal between the outer wall of a tubular member and the inner wall of a surrounding receiving bore slidingly receiving the tubular member. The sealing assembly includes a metal seal ring member having the general configuration of a toroid which has been flattened on its upper and lower surfaces. The metal seal ring member has a close fit on the outer wall of the tubular member, and an interference fit with the wall of the receiving bore. When stabbed into the receiving bore, the metal seal ring member coins onto the walls of the tubular member and the bore, resulting in an effective metal-to-metal seal. The seal assembly preferably includes a compliant seal ring member of a preferably high lubricity material, e.g., Teflon, disposed on the tubular member below the metal seal ring member.

Abstract: A packoff assembly for sealing an annulus between an inner tubular member and an outer tubular member including a sealing means rotatably connected to a packing nut. The sealing means includes an upper actuation ring rotatably retained on the packing nut. A sealing member having a ring-like metal body is rotatably mounted on the upper actuation ring with a roller ball connection which permits limited relative axial movement between the upper actuation ring and the sealing member. A lower actuation ring is rotatably mounted on the body of the sealing member by another roller ball connection which permits limited relative axial movement between the lower actuation ring and the body of the sealing member. The metal body of the sealing member includes a pair of frustoconical-shaped outer seal lips and a pair of frustoconical-shaped inner seal lips. An elastomeric seal ring is disposed on the body of the sealing member between each pair of metal seal lips.

Abstract: A duct seal (1) especially for sealing about four cables, contains a spring (8) which when operated radially expands that part of the duct seal that is to seal to a wall etc (2). The cables are sealed by heat-shrink outlets (7) of the duct seal (1). The spring (8) is operated after heating the part of the duct seal in which it lies. Heating may soften the material of the seal and activate an adhesive (9).

Abstract: A coupling for forming a sealed engagement with a tubular member, the coupling comprising an annular housing having an engagement zone for receiving a tubular member to be engaged by the coupling, and comprising an engagement assembly positioned within the engagement zone. The engagement assembly comprises an annular gasket for sealing engagement with a tubular member upon axial compression of the engagement assembly. The annular gasket has a plurality of circumferentially spaced bores. A plurality of bolts for axial compression of the engagement assembly, are positioned to extend through the bores. The engagement assembly includes at least one washer for applying axial pressure to the annular gasket during axial compression of the engagement assembly. The engagement assembly further includes a gripping ring to be radially compressed upon axial compression of the engagement assembly to grip a tubular member when positioned in the engagement zone.

Abstract: A coupling for rapidly and detachably connecting a conduit pipe or hose to an opening is disclosed provided with an inner sleeve having a flange on at least one end, an outer sleeve capable of moving with little play about the inner sleeve, a groove for a flexible sealing member between the coupling and the opening to be connected as well as clamping means for the relative axial movement of inner and outer sleeve and for pressing the sealing member tightly into the opening, whereby the inner sleeve is provided near the flange with an inclined ascending face which can mate with a corresponding ascending face at the outer sleeve, the outer sleeve being furnished with a groove arranged all around it for accommodating a sealing ring, while at least the part of the outer sleeve in the zone of the nest for the sealing ring is capable of flexible radial expansion, in such a way that, upon the ascending face of the outer sleeve being pressed against the ascending face at the inner sleeve under the action of the clamp

Abstract: A coupling for forming a sealed engagement with a tubular member, the coupling comprising an annular housing having an engagement zone for receiving a tubular member to be engaged by the coupling, and comprising an engagement assembly positioned within the engagement zone. The engagement assembly comprises an annular gasket for sealing engagement with a tubular member upon axial compression of the engagement assembly. The annular gasket has a plurality of circumferentially spaced bores. A plurality of bolts for axial compression of the engagement assembly, are positioned to extend through the bores. The engagement assembly includes at least one washer for applying axial pressure to the annular gasket during axial compression of the engagement assembly. The engagement assembly further includes a gripping ring to be radially compressed upon axial compression of the engagement assembly to grip a tubular member when positioned in the engagement zone.

Abstract: A pipe coupling apparatus comprising a concentric, relatively telescoping tube is adapted to be inserted into a receptacle. A deformable head at the distal end of the tube is deformable to an enlarged, preselected retention configuration wherein the head engages the inner wall of the receptacle to hold the pipe coupling in a locked position. Relative axial shifting of the tube deforms the head from the locking configuration to a collapsed and elongated configuration wherein the head elongates to facilitate insertion or removal of the coupling from the receptacle.

Abstract: A seal and seal assembly for sealing the annular space (14) between casing hanger bodies. An elastomeric seal ring (22) is interposed between metallic seal rings (20,24) having lips (36,38,40,42). The elastomeric ring is thicker (48) than the metal rings. The lips are of specific configuration, and the seat is supported (28) to permit downward movement of the upper seal ring (20) after compression setting.

Abstract: A pipe coupling device is disclosed for sealably securing a cylindrical outlet end of a roof drain insert, slidable within a larger diameter roof drain pipe, coaxially within the drain pipe. The coupling device comprises a compressible, rubber tubular member which when uncompressed is slidable into the drain pipe and which on compression by axially directed compressive forces expands radially outwardly sufficiently to sealably engage with interior surfaces of the drain pipe. The rubber tube is adapted on compression to sealably engage the drain insert. Screws which are turned to apply axial compressive forces to the rubber tube lie radially inside of the drain insert and are assessible for activation through the inlet end of the drain insert. The new pipe coupling provide a means mechanically locate the drain insert securely within an existing roof drain.

Abstract: Connector for vessels or pipes which includes first and second connection members (20, 60) which are clamped and sealed together. The second connection member (60) is closed by a wall (51) through which a hole (53) is cut after the vessels or pipes have been positioned. An insertion tool (90) is used to engage a clamping bracket (40) with the wall (51) to secure the connection members together when the first connection member (20) is fitted to the hole (53). A resilient sealing ring (30) surrounds the hole (53) and is compressed between the connection members (20, 60).An O-ring seal (70) on the second connection member (60) allows for relative movement between the vessels or pipes.The connector may be installed from inside a vessel or pipe where access is restricted and the connector allows for misalignment between the inlets or outlets of the vessels or pipes.

Abstract: A no-hole insertion joint and method for the repair or relining of fluid conduits such as gas service lines and the like. The joint structure and method are particularly adapted for use in the repair or relining of gas service lines from a building in order to eliminate the requirement of exterior digging or excavation. A tubular conduit is provided which includes, at the free and thereof, a joint and sealing structure. The tubular conduit and the attached joint and sealing structure are inserted into the existing service line a distance so as to be in proximity with the tee at the main. Once in place, the joint and sealing structure is activated by means of heat producing a melting of a low melting point alloy which, in turn, causes a gasket to be brought into sealing contact with the internal wall of the service line.

Abstract: A tubing head, tubing head adapter and tubing hanger are sealed against annulus fluid or downhole pressure by an upper and a lower, pressure-energizing sealing assembly. The sealing assemblies are bi-directional, pressure-energizing and operate under working pressures of up to 30,000 psi. Each assembly consists of a metal seal ring made of highly elastic and ductile 316 stainless steel with a yield strength of approximately 30,000 psi, having a frustoconical shape, with the upper and lower tips of the cone enclosing an angle of approximately 28.degree. in the prestressed state. In the axial direction, the seal ring engages a support ring on one end and a tubing hanger shoulder at the other end, both of which form inclines of 30.degree. with the vertical (radial) plane. The support ring and the tubing hanger shoulders are made of materials having yield strengths of 50,000 psi and 75,000 psi, respectively.

Abstract: A fitting for mounting to the ends of smooth wall tubes, the fitting having an entry for the tube and a collet which grips on the outside diameter of the tube by means of a mechanical spring. The fitting also seals on the inside diameter of the tube. A passageway extends through the fitting such that the tube is in fluid communication with a supply source, the fluid being able to flow between the supply source and the tube. The fluid pressure activates a piston in the fitting which causes the collet to engage the tube more securely and also increases the seal within the inside diameter of the tube.

Abstract: An externally adjustable seal and bearing structure includes an external and an internal tube. The tubes overlap within the container and are radially separated by a seal and a bearing. The bearing permits the tubes to oscillate with respect to one another. The bearing is in two parts which are separated by the seal. The bearing and the seal are arranged between a retainer and a stop plate. An adjustment nut external of the container is threaded on to the external tube and tightening of the nut longitudinally moves the external tube with respect to the internal tube. The stop plate and retainer act against the bearing parts to compress and radially expand the seal between the two tubes.

Abstract: A wear bushing for use in the drilling of oil and gas wells is disclosed for the protection of the casing being drilled within against damage by drill string members. Novel means are disclosed for the positioning and mounting of the wear bushing with the casing such that it is held in position against forces produced during drilling operations.

Abstract: A stationary sealing ring adapted to seal a grooved carrier and a circular housing is disclosed. The sealing ring includes a plurality of stacked, annular parted ring segments dimensioned to slip within the carrier groove and an expander which exerts a radial force on an inner face of each of the segments. The expander is configured to be spaced from the bottom of the groove under operating conditions.

Abstract: This composite insert for injecting a liquid product under pressure into a member provided with an internal bore comprises first and second coaxial rigid sockets surrounding the outlet aperture of the container filled with said product, the first socket comprising an external flange and the second socket comprising an internal shoulder adapted to engage an internal abutment element of the member, the front end of the second socket comprising an external flange. A flexible resilient sleeve fits around the second socket and bears with its ends against the external flanges of the first and second sockets so that when an axial pressure is exerted against the second socket by means of the internal abutment element of the member the second socket is sunk more or less into the first socket, thus causing an elastic deformation of the sleeve which develops a bead engaging in a fluid-tight manner the wall of the inner bore of the member.

Abstract: This invention relates to a fitting for mounting to the ends of smooth wall tubes, particularly smooth wall tubes having a bead on the ends thereof. The fitting both grips and seals the inside diameter of the tube, with positive adjustable handle torque action.

Abstract: A heat exchanger having one or more cooling cores connected between an inlet manifold tank and an outlet manifold tank is provided with a resilient element for mounting the cooling cores to the manifold tanks and sealing the connection therebetween. The resilient mounting and sealing element is formed so as to have a strip portion with at least one opening formed therein to receive the tube of a cooling core and a raised lip portion around the strip portion to provide a damped soft mount. The resilient element also includes a grommet portion around the opening which deforms to provide a liquid or fluid-tight seal between the outside of cooling core tubes and the inside of the manifold tank bores which are adapted to receive the tubes.

Abstract: This invention relates to a fitting for mounting to the ends of smooth wall tubes. The fitting grips on the outside diameter of the tube, and also seals on its inside diameter, with positive adjustable handle torque action. The counter forces of ID sealing and OD gripping at the same point eliminate the possibility of tube distortion especially on minimum wall tubing even at elevated pressures.

Abstract: Radiator for transmitting heat from a fluid medium to a surrounding atmosphere. The radiator of the invention contemplates rapid and efficient manufacture of radiator units of different sizes from stock material and is arranged for such manufacture either in a factory or at a construction site. Preferably identical top and bottom channeled parts are provided as top and bottom headers of the radiator and extrudable connecting channels are provided for connecting the top and bottom headers. The connecting channels may be cut in any desired length to provide the radiator units of selected sizes and radiating capacity but without change in the manner of connecting the connecting units into and with respect to the top and bottom headers. A variety of ways are shown for effecting such connecting as well as for providing appropriate fluid connections to and from the radiator units.

Abstract: Fittings are provided for use as replacements in a carburetor that has stripped the threads in the casting. The fittings include a self-adjusting filter screen, a cone nut, a fitting body, and a seal member. In a modified form of the invention, there is provided a method of sealing that does not use the screen.