Welded plastic attachment subassembly

A weldable subassembly for connecting branch pipes to a molded plastic main pipe is formed with a pair of hinged arcuate members adaptable to be placed around the main pipe and welded thereto by electrical current passed through an interposed mat containing electrical heating wires. The arcuate memb...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	RECHSTEINER, HUGO, VOGELSANGER, KURT
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A weldable subassembly for connecting branch pipes to a molded plastic main pipe is formed with a pair of hinged arcuate members adaptable to be placed around the main pipe and welded thereto by electrical current passed through an interposed mat containing electrical heating wires. The arcuate members are pivotally interconnected by a hinge member which extends on one side thereof longitudinally of the main pipe, and which enables separation of the opposite side of the arcuate members so that they may be placed about the pipe. The opposite sides of the arcuate members form a slight gap therebetween which also extends longitudinally of the main pipe and the heating wire mat has a longitudinal edge which is attached, by welding or the like, to the inner surface of one of the arcuate members at a point intermediate the hinge member and the opposite side of the arcuate member.