Connection component for together plastic elements by thermal we

Details Connection component for together plastic elements by thermal we Connection component for together plastic elements by thermal we

1990-11-27

1992-08-25

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1562739, 156294, 219517, 219535, 219552, B29C 6530, F16L 1302, F16L 4702, H05B 340

Patent

active

051415801

ABSTRACT:
The invention relates to a connection component equipped with an electrical resistor for the welding of elements made of heat-fusing plastic. According to the invention, the resistor takes the form of a single wire coated with an electrically insulating layer and having points of intersection, the coating layer fusing at a temperature between the fusion temperature of the components to be joined together and their temperature of thermal damage, so that short-circuits are generated on the wire and so that the stopping of the supply of current to the latter is commanded. The invention is used particularly for the thermal welding of polyethylene pipes used in the gas industry.

REFERENCES:
patent: 2797296 (1957-06-01), Fowler et al.
patent: 2945115 (1960-07-01), Weitzel
patent: 3061503 (1962-10-01), Gould et al.
patent: 3378672 (1968-04-01), Blumenkranz
patent: 4436986 (1984-03-01), Carlson
patent: 4618168 (1986-10-01), Thalmann et al.
patent: 4634844 (1987-01-01), Lodder et al.
patent: 4642155 (1987-02-01), Ramsey
patent: 4684417 (1987-08-01), Grandclement

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