Improved pipe coupling with built-in grip

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

Patent

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Details

F16L 21/02 (2006.01) F16L 21/06 (2006.01)

Patent

CA 2707716

The releasable band-clamp coupling (10) comprises a central housing (16) of cross-section resembling a wide, low-wall channel, the housing (16) being curved to be larger than the outer diameter of a pipe (12, 14), two curved outer clamp members (24, 26) each configured to contact a wall of the housing (16) and to support a ring seal member (38) and to support a sloped mechanical grip ring (42), there being further provided proximate to the ends of the curved outer clamp members a pair of substantially parallel pair of clamping extensions (44,46), and a sloped internally-toothed grip ring (42) comprising a plurality of spaced-apart wedge-shaped gripper units (50), each unit being connected to both adjacent gripper units by a flexible element (68) to complete said grip ring (42); and screw clamping elements (48) in contact with said clamping extensions (44, 46) to reduce the distance between said substantially parallel clamping extensions (44, 46).

L'invention concerne un accouplement à collier de serrage (10) amélioré déblocable comportant une enveloppe centrale (16) dont la section droite ressemble à une large gouttière à parois basses, l'enveloppe (16) étant incurvée de façon à être plus grande que le diamètre extérieur d'un tuyau (12, 14), deux éléments de serrage (24, 26) extérieurs incurvés, dont chacun est configuré de façon à être en contact avec une paroi de l'enveloppe (16) et à soutenir un élément d'étanchéité (38) annulaire et de façon à soutenir une bague de préhension (42) mécanique inclinée. En outre, à proximité des extrémités des éléments de serrage extérieurs incurvés, sont placées une paire de rallonges de serrage (44, 46) sensiblement parallèles et une bague de préhension (42) inclinée à denture intérieure comportant une pluralité d'unités de pince (50) espacées en forme de coins, chaque unité étant reliée aux deux unités de pince adjacentes par un élément souple (68) pour compléter ladite bague de préhension (42) et des éléments de serrage à vis (48) en contact avec lesdites rallonges de serrage (44, 46) afin de réduire l'écart entre des rallonges de serrage (44, 46) sensiblement parallèles.

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