Improved band clamp

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

Patent

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Details

F16L 33/04 (2006.01)

Patent

CA 2376430

A band clamp (10) for pipe joints is disclosed comprising a band (16) with confronting sidewalls (26, 28) when wrapped around pipes to be coupled. The clamping mechanism includes a pair of force bars (54) outboard of the sidewalls and a spline (42) with concave surfaces on opposite sides, the spline (42) being disposed between the end flanges. A bolt (48) extends through bolt holes and draws the flanges against the spline (42) to stretch the band (16) around the pipes when the bolt (48) is tightened against the force bars (54). The sidewalls have lateral flanges (36, 38) which overhang the spline (42) to arrest movement of the sidewalls relative to the spline (42) to obtain alignment of the bolt holes when the clamp is tightened.

L'invention concerne un collier à bande (10) pour joints de tuyaux qui comprend une bande (16) avec des parois latérales qui se font face (26, 28) lorsque le collier est placé autour des tuyaux à accoupler. Le mécanisme de fixation comprend une paire d'éléments d'espacement (54) à l'extérieur des parois latérales et une clavette (42) présentant des surfaces concaves sur les côtés opposés, la clavette (42) étant disposée entre les bords d'extrémité. Un boulon (48) traverse des trous de passage et serre les bords contre la clavette (42) afin d'étirer la bande (16) autour des tuyaux lorsque le boulon (48) est serré contre les éléments d'espacement (54). Les parois latérales possèdent des bords latéraux (36, 38) au-dessus de la clavette (42) qui permettent d'arrêter le mouvement des parois latérales par rapport à la clavette (42) afin d'obtenir l'alignement des trous de passage de boulons lorsque le collier est serré.

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