Abstract: A freeze proof device for pipe is disclosed adapted to be permanently embedded in concrete or other material. The device has structure for automatically adjusting to the raising or lowering of the concrete caused by freezing and thawing of moist soil on which the concrete rests. The device is particularly useful for sewer tile.

Abstract: A track switch snow melter duct connection system including end flanges with a top portion, each end flange being attached to a distal end portion on a duct which is to be connected such that the top portion extends outward and above the distal end portion. Side flanges are also attached to each duct and extend outward such that a gap exists between the distal end portion of each duct and the side flange. The connection system also includes an attachment mechanism for attaching the top portion of end flanges on adjacent ducts and a connecting member which can be slidably inserted between adjacent ducts having an elongate channel shape formed by a base and two side legs and two extensions extending from and attached to the distal end of the two side legs. The connecting member has a width such that two connected end flanges can be positioned between the two side legs and such that the extensions are positioned in the gap between the side flanges and distal end portion of each duct.

Abstract: A double containment fitting for use with a double containment pipe having an inner carrier pipe and an outer containment pipe. The fitting includes an inner containment member having a pair of open ends and a pair of centering spiders, each spider adhesively engaged with the exterior of the inner containment member near an end of the inner containment member. An outer containment member has a pair of open ends, each open end including a first portion having an inner radius larger than the exterior radius of the centering spider and a second portion adjacent the first portion having an inner radius less than the exterior radius of the centering spider, providing a shoulder for abutting an edge of the centering spider.

Abstract: An expansion joint includes first and second conduits connected by an expansion joint element. The second conduit has a liner portion which protrudes into the first conduit, so that the expansion joint element, first conduit, second conduit and liner portion together define an expansion joint cavity. A cartridge is located within the expansion joint cavity and is affixed to an end portion of the first conduit. The cartridge has a groove which faces the liner portion and houses a ring which slides within the groove while maintaining sliding contact with the liner portion of the second conduit. The outer diameter of the groove is preferably larger than an outer diameter of the ring to allow lateral movement of the first and second conduits relative to one another. Either the expansion joint cavity or the cartridge groove may be provided with a purge fluid inlet to prevent the intrusion of the service fluid and its associated contaminants into the expansion joint cavity.

Abstract: A quick-coupling pipe fitting, comprising a female element and a male element that can be coupled together, formed by fixed parts and by axially slidable parts that, when at rest, arrange themselves in a position Wherein they close the passage of the fluid and, when the two elements are coupled together, they are displaced from engagement with corresponding parts of the other element in a position wherein the abovementioned passage is open, The male and female elements can be coupled and their parts have coplanar surfaces at mutually connectable ends.

Abstract: An externally threaded fitting for use in coupling a fluid-conducting tube to a fluid-processing system threaded entrance opening is provided with a tapered-bottom groove immediately above and adjacent the fitting external thread, and with a doubly-tapered, polytetrafluoroethylene material seal element contained in the tapered-bottom groove. Upon proper installation in the system threaded entrance opening, the doubly-tapered seal element is fully isostatically compressed with total concealment of fitting external threads.

Abstract: The present invention relates to a bracket for mounting fence rails and other items to common rolled metal posts, including a flat front face and a rearwardly projecting apertured web. Most commonly these are T-shaped in cross-section. The bracket includes a front plate substantially wider than the front face of the post, two rear plates behind the front plate attached to the edges of the front plate, and two mounting plates projecting rearwardly from the edges of the rear plates. The mounting plates have apertures in registration with each other. The mounting plates are attachable to the apertured web to locate the front plate in abutting relationship with the front face of the post. The front, rear, and mounting plates define a slot shaped to received the post. The width of the front plate is sufficient to include apertures for fasteners to secure fencing members, which are not obstructed by the front face of the post. A strap can be threaded through these apertures to secure a fence member.

Abstract: The invention related to this application is: a method for folding back an opening end of resin pipe comprising following processes, (a) a process for mounting an annular body to a circumference of a pipe, (b) a process for inserting a conically protruded portion of a guiding portion including the conically protruded portion and a curved surface groove formed around this circumference to an opening end of the pipe and simultaneously advancing with rotating the guiding portion, and (c) a process for continuing the advancement with rotating the guiding portion whereby folding back the opening end of the pipe, and inserting the folded back pipe opening end to the circumference of the annular body; and an apparatus for folding back an opening end of resin pipe comprising a clamping element for holding the pipe and a bending element and the clamping element including a tightening mechanism for pushing the pipe to radial direction, and the bending element including a guiding portion for advancing by rotating with a

Abstract: An improved joint for coupling flexible hoses for forming an air or oil supply system for an automobile or outdoor machines and equipment. The joint is provided with hose clamp means such as a collet which bites the outer peripheral surface of the top end of the hose inserted into the joint and a cover member for controlling the movement of the hose and at the same time, it is provided with several means for sealing the hose with respect to the joint so that the entry of water into the joint can be completely prevented and the corrosion of the joint elements and the hose within the joint can be eliminated to thereby keeping the sealing property of the joint for a long time.

Abstract: A pressure sealed connecting apparatus is provided for the connection of first and second conduits adapted to carry a pressure medium and to rotate relative to one another. Each of the conduits has tangentially contacting countersurfaces for contacting spherical surface areas of a rotation body situated between the first conduit and the second conduit. The rotation body has spherical surface areas adapted to be in rotational sealing contact with the tangentially contacting countersurfaces of each of the conduits.

Abstract: A locking structure of a connector with a waterproof packing to prevent incomplete locking of the connector. The locking structure comprises: a waterproof packing attached to the first connector half; two rows of sealing lips with a first sealing lip and a second sealing lip integrally formed with the waterproof packing, the first sealing lip being taller than the second sealing lip, wherein the second connector half is inserted into the waterproof packing, and slidably contacts the first sealing lip in the first stage and then slidably contacts the second sealing lip to lock the waterproof connector.

Abstract: A rotary coupler having two housing portions, one housing portion being rotatable with respect to the other housing portion includes two fluid channels including a water channel extending axially the length of the coupler and a slurry channel disposed radially outwardly of the water channel. A flow directing surface is disposed within the rotatable housing portion to direct a slurry of abrasive particles and air through the housing to the outlet in a continuous manner substantially without disruption of the compositional integrity of the slurry.

Abstract: This invention relates to a quick connection of a tube capable of being fitted in a connector, said tube presenting, at a determined distance from its end, a shoulder, whilst the connector comprises an O-ring intended to come into contact with the tube in the zone located between its end and the shoulder. A member for locking the tube is mounted in the connector, said member being axially immobilized with respect to the connector and elastically deformable in the radial direction between an inactive configuration and an active configuration in which it abuts on the shoulder. A bush is mounted to slide in the connector between a first position and a second position remote from the first towards the inside of the connector, said bush presenting a stop disposed on the path of the shoulder of the tube and ensuring, in its first position, hold of the locking member in its inactive configuration, whilst the locking member is released when the bush is in its second position.

Abstract: A pipe coupling arrangement for coupling an end of a pipe section includes a coupling body having its open end, into which the end of the pipe section is inserted. An outer ring and a radially compressed inner ring are disposed in the open end of the coupling body. Inclined peripheries are respectively defined in the inner periphery of the outer ring and the outer periphery of the inner ring. These inclined peripheries are inclined so as to become smaller in diameter as they advances towards the open end of the coupling body. The inclined periphery of the outer ring and that of the inner ring are engaged by each other. A pressing means for pressing an outer periphery of the outer ring is provided such that the inner ring is tightly pressed against an outer periphery of the pipe section via the outer ring. A space is defined by the inclined surface of the outer ring and the outer periphery of the pipe section, into which the inner ring is inserted.

Abstract: An assembly includes a quick connect cartridge which is inserted into a port of a valve or manifold in a pneumatic system for coupling external fluid lines of the system to the valve or manifold. The components of the quick connect cartridge and the O-ring seal are mounted on the tubular shank of a plug. The plug is used as a shipping pin and is also used to install the components into a port of the valve or manifold. Normally, the plug is withdrawn from the port after the components are inserted in the port. If it is desired to keep the port closed after initial installation of the components, the plug may be retained in the port until it is time to connect the port. If it is desired to leave the port permanently closed, the plug remains in place. The plug can be an open plug allowing testing of the valve in which case a dust plug is provided for shipping puposes.

Abstract: A corrugated pipe has a solid joint which is formed fixedly on an end portion of the pipe by polymerization and solidification of a reaction solution which polymerizes quickly at room temperature in such a manner that the joint has a first cylindrical portion which has a first predetermined length from the end of the pipe in the axial direction, or the first cylindrical portion and a second cylindrical portion which is elongated axially outwardly from the first cylindrical portion to a second predetermined length. The first or second cylindrical portion has a locking mechanism such as an annular groove or flange which is so formed as to detachably connect the joint to the joint (H) of another mating corrugated pipe.

Abstract: A protective and aesthetics-enhancing cover for disposition over the open end of a drain pipe projecting outwardly from a building structure. The protective cover comprises a convexo-concave disk which has an outer surface convex away from the building structure and an inner surface concave toward the building structure. The convexo-concave disk is sized so as to effectively hide the drain pipe from view. A tubular mounting flange projects from the disk on the concave surface thereof for coupling to the drain pipe in a telescopic arrangement to thereby hold the cover on the end of the drain pipe. An opening is formed in the disk to allow water to drain from the drain pipe and through the opening.

Abstract: A quick connect pop top indicator for use with thin walled connectors includes a generally annular sleeve adapted to fit adjacent an opening on a thin walled tubing housing member. The sleeve nests an indicator member substantially within the cap and housing. The indicator includes a base member and axially extending leg members extending from the base and connected to a generally annular indicator member. Means are provided for separating the indicator member from the base and leg members upon proper coupling of the housing with a corresponding male member. Means are also provided on the sleeve and indicator for maintaining the sleeve and indicator in proper axial and circumferential alignment prior to proper coupling of the housing and male member.

Abstract: A coupling for a corrugated pipe having ridges and grooves arranged alternately is disclosed. A body of this coupling has a through-hole whose one end is served as an inlet port. An annular accommodation recess and an annular retainer portion are formed on an inner periphery of the through-hole in this order toward the inlet port. A cylindrical support member is accommodated within the body. The support member is urged toward the inlet port by a spring. One end portion of the support member on the inlet port side is served as a receiving portion. An annular engagement member is mounted on an outer periphery of this receiving portion in such a manner as to be elastically enlarged in diameter.

Abstract: A flange joint assembly having first and second attachment flanges are associated with first and second tubes through an interengagement of the ends of the tubes between an inner annulus and an annular corrugation which are inwardly of an attachment plate. The annulus and corrugation with the interengaged tube end are flared outwardly to interlock the components. The tube also includes an outwardly tapered section adjacent to the end. A tubular insert having inwardly tapered outer surfaces extending to each end from a midsection is positioned within the tapered portions of two axially abutting tubes. Fasteners draw the attachment flanges together to complete the assembly.