Plastic pipe provided with a groove

Details Plastic pipe provided with a groove Plastic pipe provided with a groove

1979-12-28

1982-07-13

Pavelko, Thomas P.

Metal working

Method of mechanical manufacture

Assembling or joining

264238, 264296, 264322, 425DIG218, B29D 2300

Patent

active

043387160

ABSTRACT:
A plastic pipe comprises an inner wall and an outer wall, being integral with longitudinal partitions between them and bounding longitudinally extending channels and a circumferential, helically, or non-helically extending groove, which groove has been formed by closing the channels by pressing channel wall parts onto each other. A retaining ring may be snapped into an external groove.

REFERENCES:
patent: 3806301 (1974-04-01), Osterhagen
patent: 3877282 (1975-04-01), Pogonowski

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