Heat weldable, thermoplastic fitting

Details Heat weldable, thermoplastic fitting Heat weldable, thermoplastic fitting

1974-03-08

1976-03-09

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heating unit structure

174 84S, 156380, 264272, 219535, 285 21, 285292, H05B 358

Patent

active

039433340

ABSTRACT:
To permit efficient heat welding of pipe fittings, and the like, of thermpolastic material to thermoplastic pipes, by electrically heating of the fitting, the fitting is made in two concentric portions, the inner portion having a heating wire applied to the outside thereof, the heating wire and inner portion being covered by the outer portion, for example injected thereover.

REFERENCES:
patent: 2739829 (1956-03-01), Pedlow et al.
patent: 2845516 (1958-07-01), Jones
patent: 2930634 (1960-03-01), Merritt
patent: 3061503 (1962-10-01), Gould et al.
patent: 3062940 (1962-11-01), Bauer et al.
patent: 3094452 (1963-06-01), Von Riegen et al.
patent: 3304408 (1967-02-01), Finch et al.
patent: 3377464 (1968-04-01), Rolfes
patent: 3542402 (1970-11-01), Caples et al.
patent: 3710076 (1973-01-01), Frazier
patent: 3771852 (1973-11-01), Kantorski et al.

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