Method of coupling plastic pipes by welding

Details Method of coupling plastic pipes by welding Method of coupling plastic pipes by welding

1979-06-28

1981-05-12

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156275, 156294, H05B 358, B29C 2702

Patent

active

042669979

ABSTRACT:
The coupling of two tubular elements is achieved by welding them together by energization of an electrical resistance element, the one element comprising a male end, the other a socket end. The coupling operation is carried out by means of a composite connecting piece comprising two rings which are fitted on one another, one acting as a support for a bifilar electrical resistance element and the other as a sheath. The electrical resistance element is thus uniformly coated in plastic material and is accurately centered, thereby ensuring uniform heating and welding. This coupling method is for use in coupling discharge pipelines for waste water and rain water and for conduits for industrial fluids.

REFERENCES:
patent: 3061503 (1962-10-01), Gould et al.
patent: 3062940 (1962-11-01), Bauer
patent: 3094452 (1963-06-01), Von Riegen et al.
patent: 3506519 (1970-04-01), Blumenkranz
patent: 3788928 (1974-01-01), Wise
patent: 3943334 (1976-03-01), Sturm

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