Apparatus for welding a joint between plastic pipes

Details Apparatus for welding a joint between plastic pipes Apparatus for welding a joint between plastic pipes

1982-07-02

1984-05-15

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heater-unit housing, casing, or support means

1563042, 1563797, 1562742, 219528, 219544, 285 21, H05B 358

Patent

active

044490380

ABSTRACT:
A welded joint for plastic pipe is formed by apparatus including a sleeve (6) which is placed over the place where the pipes are joined and a heating mat (3) which is inserted between the sleeve and the pipes. The heating mat (3) and the sleeve (6) are provided with gear-tooth system (4, 5, 114, 115) which engage each other in the assembled condition of the device. Consequently, the surfaces of the ends of the heating mat (3) and the sleeve (6) which are in contact are circumferentially extended, resulting in a satisfactory welded joint, even where large pipe tolerances are involved.

REFERENCES:
patent: 3393297 (1968-07-01), Hart
patent: 3506519 (1970-04-01), Blumenkranz
patent: 3930634 (1960-03-01), Merritt
patent: 3987276 (1976-10-01), Vogelsanger et al.
patent: 4096017 (1978-06-01), Wyke et al.
patent: 4147926 (1979-04-01), Stahli

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