Pipe made of rigid thermoplastic resin, pipe joint structure...

F - Mech Eng,Light,Heat,Weapons – 16 – L

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Details

F16L 11/04 (2006.01) B29C 45/14 (2006.01) F16L 19/06 (2006.01) F16L 19/065 (2006.01) F16L 21/03 (2006.01) F16L 31/02 (2006.01) F16L 37/00 (2006.01) F16L 37/091 (2006.01)

Patent

CA 2295836

A pneumatic joint (1) comprising a pipe body (2) of a hard thermoplastic resin, and an open ring (3) of a hard thermoplastic resin fitted in the pipe body from one opening thereof; the open ring being provided with a slip-off preventing projection (13) on an outer circumferential surface of a fitted portion thereof; the pipe body (2) being provided with an annular seal (9) of an elastic resin formed firmly on an inner circumferential surface thereof, a fitting inlet-carrying pipe (7) of a hard rigid resin disposed so as to coaxially abut on one opened side portion of the pipe body (2) and having a recess (10), with which the slip-off preventing projection (13) of the open ring (3) is engaged, in an inner circumferential surface of the abutted portion thereof, and an annular connecting portion (8) of a hard synthetic resin molded on an outer circumferential surface of the abutted portion of the inlet pipe firmly, and adapted to connect the fitting inlet-carrying pipe (7) to the pipe body (2).

Ce raccord pneumatique (1) comporte un corps de tuyau (2) en résine thermoplastique dure et une bague ouverte (3), de même matière, emmanchée par l'une des ouvertures du corps de tuyau. Cette bague ouverte est pourvue, sur sa périphérie extérieure, d'une protubérance empêchant toute dissociation (13). Le corps de tuyau (2) est pourvu d'un joint torique (9) en résine élastique formé solidement sur sa périphérie intérieure, d'un tube porteur d'un raccord d'arrivée (7) en résine rigide dure, monté de manière à buter co-axialement contre une section latérale ouverte du corps de tuyau (2) et possédant un évidement (10), dans lequel s'engage la protubérance susmentionnée (13), dans la périphérie intérieure de la section de raccord, et d'un élément annulaire de connexion (8) en résine synthétique dure moulé solidement sur la périphérie extérieure de la section de raccord du conduit d'arrivée et conçu pour raccorder le tube porteur d'un raccord d'arrivée (7) au corps de tuyau (2).

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