Abstract: A prefabricated composable duct element for piping aeriform fluids in general and for use in erecting concrete casting boxes is provided. The duct element may be connected to further duct elements to constitute conventional ducts such as straights of various lengths, bend or elbows, multi-way unions, cap elements for closing heads and the like. All such elements are provided at each end thereof with joint connection means each including at least one male part and at least one female part for the coupling thereof with any adjoining one of said elements.

Abstract: A tool joint for drill pipe which is particularly well adapted for large diameter drill pipe, comprises a pin section and a box section. Each section of the tool joint is adapted at a first end to be attached to the drill pipe by welding, or threads, as is conventionally done. The principal part of the tool joint is of larger diameter than the pipe and includes a plurality of longitudinal, circumferentially-spaced tongues and grooves in the form of a jaw clutch. The tongues in the pin section match the grooves in the box section and vice versa. Means are provided to polarize the tongues and grooves so that they fit together in only one angular position. A tubular extension on the second end of the pin section is adapted to fit into a bored opening or socket in the second end of the box section. O rings or other means, are provided to seal the tubular extension into the bored opening.

Abstract: Connector for rigid plastic pipes comprises a central cylindrical member wherein the axial bore widens at its two opposite ends to form three portions of predeterminal length and of different diameters, there being provided at each end a pair of semi-circular locking inserts provided internally with suitable toothing, and forming a contractable cylindrical seat adapted to lock both axially and torsionally the pipe inserted therein.

Abstract: A pipe joint for connecting heterogeneous pipes is disclosed, wherein the one end, which is provided with a metallic male screw, forms a connecting portion with metallic wares, and the other end, which is molded of synthetic resin, constitutes another connecting portion with synthetic resinous goods. A nut-shaped tightener part, which is needed in time of the joint's being screw-connected with metallic pipe, is formed integrally with the metallic material which constitutes the male screw, being exposed high on the external periphery of the pipe joint, while the synthetic resinous material, which forms the synthetic resinous connecting portion, as being extended, is adhered all over the internal periphery of metallic material to be watertightened.

Abstract: This invention relates to a device for selectively setting the axial alignment of sections of pipe from axial coincidence to an obtuse angle between the pipe sections.

Abstract: Rapidly connectable and disconnectable pipe union, comprising a bush on which are fixed one or more pipes provided with a notched flange. It comprises, in addition, a union body on which are fixed one or more pipes. This body comprises an outer threading on which is screwed a nut provided with a toothed rim and a sliding sleeve, connected to the nut by a ring. This nut comprises a toothed rib which meshes behind the notched flange. One application of the present invention is the connection of underwater pipes with one another or onto underwater apparatus by divers or by remotely controlled devices.

Abstract: The described invention includes method and apparatus for the installation of a casing hanger supporting a string of casing down hole in an oil or gas well, for removal of the installation equipment, and for tying back the hanger to an insulated production riser extending to the surface. The casing hanger is lowered into the well on drilling casing, having a smaller outside diameter than the insulated production riser casing, to permit a sufficiently large annulus for the passage of fluid between the drilling riser and the previously installed drilling riser. The drilling riser is removed by disconnecting it from the hanger by clockwise rotation of the drilling riser. The insulated production riser casing, or other special riser pipe, having a larger outside diameter than the drilling riser casing, is used to tie back with the hanger where standard riser casing is not suitable for the production of oil or gas, e.g. in the case of production through permafrost, by a clockwise rotation of the drilling riser.

Abstract: A coupling member for joining two generally coaxial tubular members, for example electrical conduits, fittings and the like, is disclosed. The coupling member includes an elongated sleeve having axially extending threads formed internally at one end thereof and an outwardly flared, deformable section at the end thereof opposite the threads. The deformable section has an inwardly directed lip for engaging an annular groove formed on the outside surface of one of the members that is to be coupled. The other member that is to be coupled is provided with external threads that are arranged to matingly engage the internal threads on the sleeve. Interface surfaces for temporarily securing the sleeve and the second one of the two members to be joined are provided so that the sleeve does not rotate while the first one of the two members is being engaged therewith.

Abstract: An automatic nozzle having a spout which is releasably connected to the body of the nozzle in a manner so that it may be forceably removed therefrom without damage to the connecting means as well as the spout.

Abstract: A coupling unit for use in filling tank ships with petroleum products. It is a 90.degree. elbow with a flange for attaching a loading hose, and there is an integral skirt to fit over a hatch opening. Also, there are quick release type bolts with the skirt to hold the unit in place over a hatch opening when loading product.

Abstract: A manually disengagable coupling for joining together fluid conduit portions for flow therethrough and a dishwasher incorporating such a coupling in a fluid conduit which has portions extending within a housing for enclosing dishes to be washed. By means of the manually disengagable coupling, portions of the fluid conduit may be removed from within the housing of the dishwasher for purposes of cleaning the dishwasher interior, while rotational and angular displacement between the joined conduit portions is resisted by characteristics of the coupling described more fully hereinafter.

Abstract: A thin plastic tube has at the end a continuous or interrupted inclined plane means which collapses the plastic tube end section over a nipple or another tube end. The plastic tube end section is inserted over the nipple or other tube end to be sealed thereby with a locking ring drawn over the inclined plane means. The locking ring is drawn over the inclined plane surfaces to uniformly collapse the tube end section into engagement with the nipple or other tube end with a sealing force and with the locking sleeve in frictional locked engagement therewith.

Abstract: An adapter is disclosed for connecting a multi-passage conduit section to a plurality of single bore pipes. Both the conduit and the adapter have partition walls forming passageways, and the adapter has a male end receivable in the female end of the conduit. The partition walls at the male end of the adapter are generally rectangular and correspond in configuration to the partition walls at the female end of the conduit, whereas the partition walls at the opposite end of the adapter along with the enclosing walls of the adapter define a plurality of cylindrical sleeves into which pipe sections are receivable. The partition walls taper generally uniformly from a generally rectangular to a cylindrical configuration. The pipe sections can be coupled to single bore pipes.

Abstract: A quick detachable coupler having a tubular female member receiving a tubular male member. The end of the female member into which the male member is inserted consists of a stiff continuous ring of resilient material provided with a pair of diametrically disposed latches and with a pair of diametrically disposed pressure portions. The male member is formed with an external latching and locking ring having a lead surface which engages corresponding lead surfaces on the latches to spread the latches against the spring pressure of the resilient ring to allow the male ring to travel past said latches and to be locked in position within said female member by locking surfaces on the latches engaging corresponding locking surfaces on the male locking ring. To release the male member from the female member, the pressure portions are squeezed together to produce a slight flattening of the female ring which spreads the latches apart sufficiently to release said male locking ring.

Abstract: A locking assembly for use in a well for locking a first member to a second tubular well member which includes a locking notch. The assembly includes a locking dog carried by the first member and a locking sleeve positioned for longitudinal movement towards and away from the back side of the locking dog for locking and releasing the dog from the notch. The first member and sleeve are telescopically positioned relative to each other for longitudinal movement with a limited longitudinal lost motion between the first member and sleeve allowing longitudinal movement therebetween for setting and releasing the lock, but preventing disengagement between the first member and the sleeve so that the first member may be retrieved by retrieving the sleeve.

Abstract: A coupling for unthreaded pipes of a sprinkler system, which permits the replacement of a small damaged pipe section without bending the pipes already emplaced in the ground. One coupling includes a short pipe section having an enlaged tubular portion fixed at one end thereof adapted to be fitted over and adhered to a first open end of the pipe in the ground. A slidable sleeve on a second end of the pipe section has an enlarged tubular portion adapted to be fitted over and adhered to a second open end of the pipe in the ground.

Abstract: A pipe saddle assembly is disclosed herein and includes an outlet body arrangement, preferably of the cartridge insert type, which is adapted for positioning adjacent to and around an opening in the wall of a pipe. This insert-type outlet arrangement, which includes means to insure that a uniform seal is provided against the pipe wall around the opening, is connected with at least two lugs also comprising part of the saddle assembly. These lugs are located on opposite sides of the boss arrangement, one of the lugs in one embodiment preferably being positioned substantially closer to the outlet arrangement than the other lug. In addition, each of the lugs preferably includes a slotted opening on one side thereof. The saddle assembly also includes a curved strap adapted to extend around a portion of the pipe and including opposite ends preferably adapted to be disposed in the slotted openings for interlocking engagement with the lugs.

Abstract: A push -- pull connector including a sleeve lockable to a spigot by locking balls controlled by a sliding member mounted on the sleeve, wherein the sliding member has a stable locked position and a stable unlocked position, with no intermediate stable position. The stable positions are determined by a resilient ring mounted in a groove on the sleeve and not by any spring action on the balls. The arrangement may be such that the force necessary to move the sliding member from unlocked to locked position is just greater than the force necessary to effect full engagement of the spigot and the sleeve.

Abstract: A connection between the end of a cylindrical pipe inserted into a hole in a plate for connection there with, the connection being fluid-tight and capable of resisting a torsional couple; the connection is effected by first expanding the pipe-end with respect to the original pipe profile and by shaping the cross-section of the outer circumference of the expanded pipe-end and the inner wall of the hole in the plate such that the projection of the zone of contact upon a plane perpendicular to the axis of the pipe differs from a pure circular form.

Abstract: A pipe coupling for connecting pipe sections fitted into opposite ends of the coupling which is formed with a plastics sleeve having tongues formed integrally with the sleeve on opposite ends thereof. These tongues fit in openings in plastics clamping rings at opposite ends of the sleeve and engage with sides of the rings to prevent removal of the clamping rings. The clamping rings hold sealing rings of rubber material around the inside of the sleeve for sealing engagement with the pipe sections.

Abstract: Headers for low pressure piping system, preferably of the type that has multiple channels and is split in two parts, that can be jointed by means of grooves the side walls of which interlock at such a small angle to a perpendicular on the central plane that, upon pressing the parts of the weld together, the walls thereof become welded together as a result of friction, pressure and plastic deformation.

Abstract: A sectioned suction pipe, especially for a cleaning device, in which the pipe sections have plug and sleeve portions for telescopic engagement. Each plug portion has a radial protuberance receivable in a recess in the sleeve portion of the adjacent pipe section. Each sleeve portion has an axial incision along each side of the recess therein to impart resiliency thereto and a groove is formed inside each sleeve portion to guide the protuberance toward the recess.

Abstract: A structure for providing a high pressure, fluidtight juncture between a tube or tubing and a fitting or body member in which a bore is provided in the fitting. The bore has a non-circular interior wall adjacent its opening and a threaded wall of lesser diameter interiorly of said non-circular portion. The tube has threads at or near one end which engage the threads of the bore. In addition, the tube is upset or displaced axially with the said end held against movement to flow the tubing into fluidtight sealing engagement with the threads, the non-circular portion of the bore and the transverse or lateral wall portion of the bore wall intermediate said threaded and non-circular portion, and with the exterior surface of the fitting at the bore opening.

Abstract: A ring to be interposed between the adjoining ends of two lengths of cylinder barrel of a worm extruder, each length of which comprises an inner cylindrical member and an outer cylindrical member disposed concentrically therewith with a duct for flow of heating and/or cooling fluid provided between the cylindrical members, the ring having an inside diameter corresponding to the inside diameter of the inner cylindrical member end faces, having sealing rings therein, to abut and seal against the end faces of the cylindrical members and a covered in recess in its periphery for connection to a source of heating and/or cooling members, clamping means being provided to pull the outer cylindrical members into abutment with the ring.

Abstract: The invention relates to a damping device which comprises an elastic sleeve over-moulded on two coupling end members provided with transverse grooves for the anchorage of this latter, the transverse grooves opening into a section of the internal bore of each end member having a diameter greater than the diameter of the remainder of said bore.

Abstract: A quick-connect tubing coupling comprising a cup-shaped cage externally attached to a first tube with an end portion of the tube concentrically contained within the cage. The inside diameter of the cage is sufficiently greater than the outside diameter of the tube portion contained therein to provide a space therebetween. The cage has a plurality of axially extending cantilevered leaf springs projecting radially inwardly toward the first tube portion, some of the leaf springs being longer than the others.A second tube is outwardly cupped at one end to encapsulate an O-ring, the cupped end portion of the second tube being concentrically received between the cage and the first tube end portion. The cupped end of the second tube provides a shoulder behind which the longer leaf springs can lock with the O-ring in a sealed mode or behind which the shorter leaf springs can lock with the first and second tubes axially displaced to provide a pressure relief vent.