Abstract: A pipe section is mounted in a horizontal position and upper and lower halves of a spigot ring mold are clamped to the spigot end. The lower mold half is provided with a port for receiving a nozzle of a hardenable liquid resin supply hose and the upper mold half is provided with vents. Resin is forced into the mold under pressure until some comes out of the vents. After the resin is hardened, the mold is removed.

Abstract: The invention provides a seal for pipe joint couplings, the present seal comprising a sleeve member receivable over the pipe joint and extending for a relatively short distance along each of the pipes. The seal further comprises an annular pressure chamber formed in the inner wall of the sleeve facing each of the pipes, the outer surface of each pipe acting to define the chamber, each pressure chamber being partially positioned into two sub-chambers by an inwardly extending annular bead formed on the sleeve, the sub-chambers each having packings such as O-rings disposed therein.

Abstract: A tube fitting of the push-pull type wherein the tube end is connected to the fitting by a simple inward insertion thereof, and withdrawal of the tube is effected by a simple withdrawal movement thereof upon manual rearrangement of the fitting components. The fitting includes a spring finger locking element adapted to engage the tube end when inserted and effectively prevent outward axial withdrawal movement of the tube end. A manipulating device is provided for selectively disengaging the spring finger from the tube end to permit axial withdrawal of the tube end when desired. The disengaging device is a one-piece element and is associated with suitable seals for providing an accurately preselected prestressing thereof against the tube end and body to provide an improved seal of the tube end to the body. The spring fingers are defined by an annular element.

Abstract: A shock absorbing subassembly with a body, a mandrel slidably and non-rotatively received in the body, dampening means therebetween, an upper seal above the dampening means and a floating seal therebelow for maintaining an oil bath between the body and the mandrel, a primary seal between the body and the mandrel below the floating seal, and a secondary seal actuated upon a predetermined magnitude of leakage past the primary seal to sequentially establish another seal between the body and the mandrel above the primary seal and below the floating seal.

Abstract: A thread protector and seal device, suitable for use with automated shell lling equipment utilizes a flanged semi-rigid tubular member having a plurality of longitudinally disposed slots on one end thereof to facilitate insertion into the nose end of an internally threaded projectile. A compliant member is molded into interior and exterior annular grooves of the insertion end of the thread protector to prevent the accumulation of explosive material from entering the threaded fuze area of the projectile during a loading operation.

Abstract: An improved pressure type connection on stepped-thread Hydril-type tubing and casing tool joints is disclosed, wherein a secondary sealing means is included between the stepped threaded areas of the Hydril-type connector. The secondary sealing means includes an annular ring of relatively rigid, internally tenacious plastic or rubber material, which serves to contain well pressure if the metal-to-metal sealing surfaces on the pin and box members of the Hydril-type connector are damaged. With such secondary sealing rings, damaged Hydril-type connectors can still be used, without having to scrap same, or having to repair the damaged area at great expense.

Abstract: Valve apparatus is disclosed for discharging pressurized fire extinguisher fluid from a container. A valve housing includes a valve body and manifold between which a diaphragm which is removably mounted to facilitate field replacement. The diaphragm comprises a semi-spherical shell which is mounted across a passage in the housing with a concave side of the shell facing the pressurized fluid. The shell is fabricated of a metal which is pre-stressed so that the diaphragm ruptures above a predetermined fluid pressure for relieving over-pressure from the container. A dual seal is formed about the rim of the diaphragm by means of an O-ring and an annular knife edge which are disposed within a recess of the manifold body. The valve body and manifold are secured together in metal-to-metal contact at their interface to prevent leaking. A squib cartridge is mounted in the housing to rupture the diaphragm and permit the fluid to discharge through the passage.

Abstract: A replacement oil drain tube for interconnecting the head and crankcase on a Porsche automobile engine permits the repair of such engines through a replacement of standard, single piece oil drain tubes with a telescoping oil drain tube assembly, eliminating the requirement that the cylinder head be removed from the engine for such repair.

Abstract: A quick-connect tubular coupling for a pair of tubes one of which has an end portion telescopically disposed within an end portion of the other. An annular cage is externally mounted on the one or inner tube in axially spaced relation to the free end of its end portion. The cage is held on the one tube against axial displacement along the latter. The end portion of the other or outer tube is flared outwardly at its free end and extends in the cage. A circular spring means is interposed between the flared end portion of the other tube and the cage and when so disposed prevents axial movement of the one tube relative to the other in telescopic disengagement direction. Between the telescoped end portions are a plurality of "O" rings that are compressed in a sealed mode to prevent leakage through the coupling.

Abstract: A light walled circular metallic conduit including a first conduit member and a second conduit member. An expanded section is at one end of the first conduit member and an end of said second conduit member is snugly telescoped within said expanded section of said first conduit member. The expanded section has external threads thereon and a nut is provided which is internally threaded. Inside the nut is a split ring. The nut encircles a seal. Upon tightening the nut the split ring bites into the second conduit member. A skirt is affixed to the nut and includes a finger which extends into a gap between the nut and the second conduit member so as to prevent water from leaking into said gap and into the interior of said first and second conduit members.

Abstract: A plug member of a quick connect coupling assembly is provided with an annular weather seal abutting against an upset bead on the plug member in position thereon to sealingly engage the free or socket end of a socket member of the coupling assembly when the plug member is fully inserted into locked and sealed engagement with the socket member, the weather seal acting as a barrier to moisture, dirt, dust, etc., penetration into the O-ring seal surfaces of the mating plug and socket members.

Abstract: A shock absorbing subassembly with a body, a mandrel slidably and non-rotatively received in the body, dampening means therebetween, an upper seal above the dampening means and a floating seal therebelow for maintaining an oil bath between the body and the mandrel, a primary seal between the body and the mandrel below the floating seal, and a secondary seal actuated upon a predetermined magnitude of leakage past the primary seal to sequentially establish another seal between the body and the mandrel above the primary seal and below the floating seal.

Abstract: A joint assembly connected with one end of a heat insulated conduit which includes an outer casing, a concentric inner core and an intermediate concentric layer of insulation material is disclosed herein. This assembly defines a passage extending from the conduit core outwardly to the outer surface of the joint assembly. This passage is provided such that fluid therein and under a predetermined amount of pressure in the direction towards the outer surface of the assembly will move out of the passage in the direction of pressure, i.e., to the outer surface of the joint assembly rather than into the layer of insulation material comprising part of the conduit.

Abstract: A tubular clamping and sealing coupler for underwater oil or gas pipelines or the like operating under high pressure, providing a fluid-tight joint between the sections of the pipelines, one section of the coupler being firmly secured to the pipe on which it is mounted while the other section of the coupler is mounted on the adjacent pipe and is tightened into sealing and clamping position against the first mentioned coupler, a single operation performing the clamping and sealing and coupling function, said coupler eliminating the need for precise alignment of the pipes or use of a chemical sealing compound.

Abstract: A device for non-rigid connection of two rigid cylindrical pipes comprises the combined use of flexible double-lipped gaskets and toroid flexible gaskets surrounding a bulb-shaped zone formed in one of the pipes. The device is particularly useful for fastening fragile tubes containing light emitters to metal reactors used for photochemical processes.

Abstract: When adjacent pipes are made up by tool joints on outer tubes of dual conduit drill pipe, radially spaced pin and box on inner tubes shrink fitted in tool joints are sealed by bullet shaped seal rings around pin and in box compressed against shoulders and almost enclosed.

Abstract: A swivel joint for pressure containing conduits such as movable flow lines may comprise a pair of hub elements each having means establishing interconnection with a section of flow line, the hub elements being abutted in such a manner as to define a flow passage through the swivel joint construction. A thrust flange is formed on each of the hub elements, the flanges being retained within a split housing structure that services to retain the swivel joint in assembly. Rotatable relationship between the hub elements and the body structure is established by a pair of thrust bearings that are interposed between the housing and the respective thrust flanges of the hubs. A lubricating spacer element may be disposed between the thrust flanges of the hubs to prevent the development of friction retardation of swivel movement. The hubs interfit to define a sealed recess within which is received a seal sleeve that is of sufficient length to transition the joint between the abutted hubs.

Abstract: A connecting fitting for pressure conduits including a pair of coupling elements with corresponding bores and one element having a female portion capable of receiving a male portion of the other element and said female portion having spaced apart recesses with seals positioned therein cooperating with exterior surfaces of said male portion to provide seals therebetween. One of said seals spacing said male and female parts in the assembled position thereof and having a recess providing a pair of lips with an orifices therebetween opening into said space between said parts for receiving a medium under pressure in said conduits, for spreading said lip into sealing engagement with said male and female parts.

Abstract: A connection is provided between pipe (principally sewer pipe) and the wall of a manhole or like structure, whereby a hole passing through the wall of the manhole is provided with sloped tapers opening toward each side of the wall, through which the pipe is received, with resiliently compressible ring members being provided at each side of the wall, arranged in wedged engagement between the pipe and each tapered portion of the wall, clamping the pipe to the wall. The manhole will principally be of the cylindrical cast concrete type, and the rings will preferably be of the O-ring type. The pipe may be of various constructions. A particularly novel technique is provided for facilitating the connection, whereby forces exerted on the pipe from inside the manhole after a compressible ring has been applied thereto, are maintained while another ring is rolled into position against the tapered exterior surface, and then swaged into place.

Abstract: A coupling device adapted for connecting conduits or the like which carry pressurized fluid and essentially embodies first and second coupling members, a pair of sealing members and retaining means. The first coupling member is arranged to be connected to the conduit and includes first and second spaced generally peripheral grooves, each of which is defined by respective first and second pairs of shoulders, and a peripheral depression formed adjacent one of the second pair of shoulders remote from the first groove. The pair of sealing elements are arranged such that respective ones thereof are suitably received within the first and second grooves for providing a fluid-tight seal. The second coupling member detachably receives the first coupling member and includes at least first and second bores which respectively slidably receive the first and second sealing members, and first and second openings which extend generally transversely to the longitudinal axis of the first and second bores.

Abstract: Extended casing method and apparatus for completing an underwater well whereby complete and continuous pressure control is maintained at the surface drilling platform. A conductor casing is installed in the floor of a body of water with a casing head and riser attached near the floor. Other casing is installed and supported at the water floor by hanger heads and having other risers extending upwardly therefrom. Pressure control equipment is installed at the upper end of one of the risers. An innermost casing having a tubing hanger-head attached is lowered through the pressure control equipment and installed. An orientation sleeve is aligned with the tubing hanger-head to properly orient the tubing hanger. The tubing hanger and tubing is then passed through the pressure control equipment and the innermost riser, to which the pressure control equipment is attached, and is lowered to engage the orientation sleeve for proper alignment with the innermost hanger-head and remotely latched thereto.

Abstract: A rotatable head sprinkler apparatus incorporating a lower bearing seal and having a swivel device for connection to a source of water under pressure, a spindle connective device and a self-powered rotary sprinkler head of the type used for irrigation of large circular areas.

Abstract: Repair fittings are provided sealing ruptures or leaks in existing piping systems. The fittings are economical to produce and can be simply installed to provide effective and reliable leak protection. The fittings are of the gasket type and include a pair of substantially identical housing halves which can be fixedly attached to enclose a piping coupling and sections of the accompanying piping. The gaskets are positioned in grooves formed in the surface of each housing half. In assembly, the gaskets compressively mate to provide a fluid tight seal between the two halves with multiple fluid tight seals being formed around the pipe sections encompassed by the fitting.

Abstract: A dynamic pipe coupling for connecting the ends of two pipes so as to prevent axial separation thereof but which permits axial flexing therebetween. The coupling includes two coupling members, each of which is connectible at one end thereof to the end of one of the pipes. One member has attached thereto a ball-shaped portion and the other coupling member has a housing arranged to receive the ball portion thereinto. Further, the housing has an annular channel-shaped groove thereabout facing radially outwardly. The coupling includes a setting ring assembly mountable about the coupling members, with the ring having a portion with an internal surface for matingly engaging the rearward side of the ball and having another portion for receiving thereinto and radially surrounding at least that portion of the external surface of the other coupling member having the aforesaid annular recess.

Abstract: A composite seal for joining a down flow drain pipe to a shower pan has a drain fitting provided with a tapered rim overlying the shower pan and a packing nut for holding it in place. A flanged lower portion of the fitting forms an annular pocket around the drain pipe in which a series of three rings are stacked. The center ring has normally diverging annular sections which are forced together between the pipe and the flanged portion of the fitting thereby to seal the assembly.

Abstract: A coupling unit insertable between a first and a second pipeline, flexible or hose pipe or the like. Said coupling unit allows relative movement between the pipelines and comprises an outer part or conduit member serving as a muff and attachable to the first pipeline. A suitably tubular shaped inner part or conduit member is attachable at its one end, attachable to the second pipeline and at its other end carries a first surface, which by coaction with a second surface inside the outer part can limit a separating movement of the parts. A sealing device is arranged to prevent the medium in the pipeline from leaking between the parts. The sealing device comprises first sealing means coming into action when the inner part at said surfaces is pressed towards the outer part at a given pressure in the medium. The sealing device further includes a second sealing means placed behind the first sealing means.