Method of making a plastic pipe adaptor

Details Method of making a plastic pipe adaptor Method of making a plastic pipe adaptor

1999-07-19

2000-10-17

Bryant, David P.

Metal working

Method of mechanical manufacture

Assembling or joining

29523, 285258, 285337, 285423, 285906, B23P 1102, B21D 3900

Patent

active

061312657

ABSTRACT:
A plastic pipe adaptor (10) includes a length of pipe (12) having a plastic pipe wall (14) with a substantially rigid pipe stiffener (32) disposed inside the pipe and a substantially rigid collar (34) disposed about the pipe exteriorly of the pipe wall (14), the collar having a recess (40) therein. The stiffener (32) and collar (34) are positioned such that a portion (50) of the plastic pipe wall is disposed between the stiffener (32) and the collar recess (40) and at least a portion (52) of the pipe stiffener is deflected outwardly against the pipe wall portion (50) by an amount sufficient to wedge the pipe wall portion (50) into engagement with the collar recess (40). The result is a firm grip to the pipe which allows the collar to serve as an attachment to another member such as a mechanical joint (30). A method of making the adaptor (10) is also described.

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