Abstract: A system for coupling pipes includes a first pipe having a tapered, spigot end; a second pipe having a tapered, spigot end; wherein the first pipe and the second pipe are made from a reinforced thermosetting resin (RTR), and a coupler having two tapered socket ends adapted to internally receive the respective tapered, spigot ends of the first pipe and the second pipe, wherein a thermoplastic material is disposed between an exterior of the first pipe and an interior of the coupler. A thermoplastic material is disposed between an exterior of the second pipe and the interior of the coupler. Upon application of induction heating to the coupler, the heat between the first pipe, the second pipe, and the coupler is sufficient to melt the thermoplastic material such that, when the heat is removed, the hardened thermoplastic material seals the first pipe and the second pipe to the coupler.

Abstract: A method of applying a corrosion-resistant coating to a fastener that includes preheating an area of the fastener to be coated to elevate a temperature of the area and spraying the preheated area of the fastener with a molten or semi-molten metal. In one embodiment, a corrosion-resistant coating applicator includes a support structure, a rotatable slotted fastener conveyer supported by the support structure, a feeder configured to feed fasteners to the rotatable slotted fastener conveyer, a fastener aligner configured to make head portions of the fasteners aligned with each other, a heater configured to heat head portions of the fasteners as the fasteners are being conveyed by the slotted fastener conveyer, and a sprayer configured to apply a corrosion-resistant coating to the heated head portions of the fasteners being conveyed by the slotted fastener conveyer. The present disclosure also provides corrosion-resistant coated fasteners made using the coating methods and/or coating apparatus.

Abstract: One or more embodiments of the present invention relate to a torque-limited attachment device, having a first head piece with at least one shaped element for the purpose of establishing a positive-fit connection to an attachment tool, and having a second head piece which has at least one threading, wherein both head pieces are connected to each other, forming at least one predetermined breaking point which breaks at a limit torque between the two head pieces such that a first breakaway surface, the same being functionally assigned to the first head piece, and a second breakaway surface, the same being functionally assigned to the second head piece, are created, and wherein at least the second head piece has a base material inside, the same having a corrosion-resistant surface coating.

Abstract: An automotive fuel tank is provided in which a plurality of mounting members are provided on a built-in part which are fusion bonded to an inner surface of an outer wall of the fuel tank so as to attach the built-in part in place in the fuel tank. An abutment portion is formed on the mounting member which is brought into abutment with an inner surface of the outer wall of the fuel tank. The abutment portion has formed thereon an abutment surface which is made to tightly stick to the inner surface of the outer wall of the fuel tank and elongated projections which project from the abutment surface, whose cross section at their distal end portions is of triangular shape and which penetrate into an interior of the outer wall of the fuel tank, and a height of an apex of the elongated projection from the abutment surface is in the range of 30% to 70% of a thickness of the outer wall of the fuel tank.

Abstract: Apparatus and Method of use for an improved lock nut type of fastener. On a threaded rod, a set of one or two cavity locknuts are used with a sleeve like ferrule to lock a nut in a set position on the rod. For example a nut that is clamping a workpiece can be held in place (resisting if not preventing loosening) by suitable application of the ferrule and cavity locknut. The cavity locknut has a tapered funnel-like cavity in a nut face around the nut's threaded hole. Locking is accomplished by immobilizing the ferrule on the rod and against the nut to be held, orienting the cavity side of the cavity locknut toward the ferrule, and forcefully torquing the cavity nut against and around the ferrule so that it is crimped against the threaded rod by the tapered cavity in the nut.

Abstract: Described is a device and method for a securing element for screw connections as an interlayer, between the screw head and supporting material and/or between the nut and supporting material, the basic body of the element consisting of a metallic material, to the top side and underside of which hard material particles are fixed, wherein the hard material particles are fixed by means of a metallic binding phase, the thickness of the metallic binding phase being lower than the mean diameter of the hard material particles, so that the hard material particles project out of the metallic binding phase.

Abstract: The invention relates to a securing element for screw connections as an interlayer between the screw head and supporting material and/or between the nut and supporting material, the basic body of the element consisting of a metallic material, to the top side and underside of which hard material particles are fixed, wherein the hard material particles are fixed by means of a metallic binding phase, the thickness of the metallic binding phase being lower than the mean diameter of the hard material particles, so that the hard material particles project out of the metallic binding phase. The invention also relates to the use of a securing element according to the invention for highly loaded, permanent and rereleasable screw connections, the securing element being used as an interlayer between the screw head and supporting material and/or between the nut and supporting material.

Abstract: There is provided a screw treated by a chemical conversion coating of trivalent chromium having a torque characteristic approximately equivalent to a screw of a hexavalent chromate treatment. For the purpose, on a surface of a bolt, a zinc plating layer is formed by a zinc plating treatment. On the layer, a chemical conversion coating of trivalent chromium is also formed by a treatment of chemical conversion coatings of trivalent chromium. The coating is formed to be thin and soft so that the zinc-based plating layer can be exposed on the surface due to rubbing off of the chemical conversion coating of trivalent chromium at a contact portion to a fastened member of the bolt by tightening the bolt.

Abstract: Disclosed are fasteners that include an electrically conductive material and a film-forming composition deposited on at least a portion of the material. The film-forming composition comprises a nitrogen-containing heterocyclic compound. The fasteners are suitable for use with wood that has been treated with a chrome-free copper containing wood preservative. Also disclosed are packages that include a plurality of such fasteners and articles that include a piece of wood in contact with such a fastener.