An electro-welding fitting includes a main body from a first plastics material having an elasticity modulus E2 and at least one heating element for heating the plastics first material. The at least one heating element is entirely or partially surrounded by a second plastics material that does not correspond to the first plastics material or that has other properties from those of the first plastics material

An underwater pipe and connector assembly includes an underwater pipe having a pipe body and an annular connecting end section, a connector fixed in the connecting end section, and at least one reinforcing layer having a first fixed cover section fused to and fixedly covering the connecting end section, and a second fixed cover section fused to and fixedly covering an outer circumferential surface of the pipe body immediately adjacent the connecting end section. An outer coil is embedded between the first fixed cover section and the connecting end section and between the second fixed cover section and the outer circumferential surface of the pipe body immediately adjacent the connecting end section.

A rigid conduit (for example, a metal conduit) featuring an electrofusable section secured to the rigid conduit to allow the rigid conduit to be electrofusion welded to another component of the fueling installation, such as a sump or further electrofusable conduit, is provided by the present disclosure. In certain exemplifications, multiple spaced electrofusable sections are provided on the rigid conduit, with corrosion resistant sections spanning the electrofusable sections in certain arrangements.

The present invention sufficiently heats a repairing material while preventing change in quality of a base material provided with the repairing material so as to securely bond the repairing material to a repair target portion. The repair method of the present invention, in order to repair a repair target portion 14 existing in an outer panel 1, includes: a repairing material disposing step of disposing a repairing patch 21 including a resistance heating element 23 and a carbon fiber reinforced resin, and an adhesive 22A including a thermosetting resin before being hardened for bonding the repairing patch 21 on the repair target portion 14; and a heating-hardening step of heating and hardening the thermosetting resin of the adhesive 22A by causing the resistance heating element 23 to generate heat through supply of electricity thereto.

A method for producing, by welding, a joint between a thermoplastic matrix composite material and an elastomeric material. The elastomeric material is functionalized by incorporating, onto the surface of the elastomer, a nonwoven fabric consisting of fibers of thermoplastic material. The functionalized surface of the elastomeric material is welded to the thermoplastic material of the composite. The functionalization of the elastomeric material is performed during the vulcanization of the raw elastomer. The vulcanization is performed under a sufficient pressure for the nonwoven fabric placed on the surface of the raw elastomer to become incorporated with same, at least at the surface, during the vulcanization process. The welding operation includes interposing a metal fabric coated with thermoplastic material between the surfaces of the elastomer and the composite that are welded to each other, and passing an electric current through same, resulting in the surface melting of the two materials.

An electrofusion coupling member made of a thermoplastic substance having aluminum particles incorporated therein and further comprising an electric resistance heating element disposed therein, an electrofusion coupler device which includes the same, and a method for welding the device to other thermoplastic objects are provided herein.

A method for producing, by welding, a joint between a thermoplastic matrix composite material and an elastomeric material. The elastomeric material is functionalized by forming a thin layer of elastomeric material incorporating particles of thermoplastic material and melting the thin layer onto the surface of the elastomeric material during the pressure-vulcanization of the elastomer. The functionalized surface of the elastomeric material is welded to the thermoplastic material of the composite. The welding operation includes interposing a metal fabric coated with thermoplastic material between the surfaces of the elastomer and the composite that are welded to each other, and passing an electric current through same, resulting in the surface melting of the two materials.

A method of securing a first component part and a second component part together, the method comprising providing an electrically conductive member between a first surface of the first component part and a facing first surface of the second component part and securing the first and second components together by passing a current through the electrically conductive member. The electrically conductive member may comprise a first portion connectable to a source of current and a second portion electrically connected to the first portion and comprising a plurality of sub-conductive members. The electrically conductive member may be distributed across at least 50% of the surface area of the first surface of the first component part.

A heat-seal band is provided that incorporates voltage sensing wires, such as signal wires or conductors that are separate from current load carrying wires or conductors. This provides two discrete electrical paths: a voltage sensing path, and a current transmission path. The voltage signal conductor(s) in the voltage sensing path may be insulated to mitigate any non-desired influence by means of the voltage signal conductor's exposure to thermal or electrical influences from the current transmission path, including current transmission paths defined through conductive tabs that connect the heat-seal band to the current load conductors. The voltage signal conductor may connect at a node to the tab to band (tab/band) junction, which is defined at an intersection of the heat-seal band's conductive tab and the band that directs heat into a workpiece. Additional or a second set of voltage sensing conductors may be electrically connected to the heat-seal band at a location that is spaced from or in a subset of the first set of voltage sensing conductors. The second set of voltage sensing conductors may provide a secondary voltage sensing arrangement as a verification tool for evaluating temperature discrepancies between their locations and those of the first set, indicative of heating non-uniformity about the heat-seal band.

The present invention sufficiently heats a repairing material while preventing change in quality of a base material provided with the repairing material so as to securely bond the repairing material to a repair target portion. The repair method of the present invention, in order to repair a repair target portion 14 existing in an outer panel 1, includes: a repairing material disposing step of disposing a repairing patch 21 including a resistance heating element 23 and a carbon fiber reinforced resin, and an adhesive 22A including a thermosetting resin before being hardened for bonding the repairing patch 21 on the repair target portion 14; and a heating-hardening step of heating and hardening the thermosetting resin of the adhesive 22A by causing the resistance heating element 23 to generate heat through supply of electricity thereto.