Snap-fit fitting for corrugated stainless steel tubing

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

Patent

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Details

F16L 21/06 (2006.01) F16L 19/07 (2006.01) F16L 21/04 (2006.01) F16L 33/26 (2006.01)

Patent

CA 2686082

A fitting incorporating a snap-fit sealing and locking device and methods of actuating the fitting and forming a seal between a length of corrugated tubing and the fitting are provided. The tubing can be corrugated stainless steel tubing having a jacket that at least partially covers the tubing. The sealing and locking device incorporates a bushing that is advanced through the application of axial pressure into a sleeve portion. Fingers on the bushing engage one or more corrugation grooves on the tubing and apply force to the tubing to collapse one or more corrugations to form a metal-to-metal seal. Distal motion of the bushing is inhibited after forming a metal- to-metal seal by contact between the bushing and the sleeve portion.

La présente invention concerne un montage incorporant un dispositif de scellement et de blocage à fermeture par pression et des procédés d'actionnement du montage et de formation d'un joint entre une longueur du tubage ondulé et le montage. Le tubage peut être un tubage en acier inoxydable ondulé présentant une chemise qui recouvre au moins en partie le tubage. Le dispositif de scellement et de blocage incorpore une bague qui est avancée en appliquant une pression axiale à l'intérieur d'une partie de manchon. Des doigts sur la bague se mettent en prise avec une ou plusieurs rainures d'ondulation sur le tubage et appliquent une force sur le tubage pour comprimer une ou plusieurs ondulations pour former une étanchéité métal contre métal. Le mouvement distal de la bague est empêché après la formation d'une étanchéité métal contre métal par le contact entre la bague et la partie de manchon.

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