Collets for use with valves

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

Patent

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Details

F16K 31/163 (2006.01) F16K 31/165 (2006.01)

Patent

CA 2740174

Collets for coupling rotary actuators to valves are disclosed. An example collet includes a plurality of flexible members (228a-d) configured to be coupled to an elongated member (220) and each having an inner surface (230a-d) that forms at least a portion of a substantially rectangular bore (232) configured to receive a rectangular shaft. The plurality of flexible members form an involute outer surface (234a-d) for engaging an involute inner surface (208) of an opening (206) of a lever (210). The opening of the lever is configured to cause the plurality of flexible members to be displaced toward an axis (242) of the elongated member to cause the inner surface of each of the plurality of flexible members to engage one or more surfaces of the rectangular shaft.

Linvention concerne des pinces destinées à accoupler des actionneurs rotatifs à des soupapes. Une pince donnée à titre dexemple comporte une pluralité déléments flexibles (228a-d) conçus pour être accouplés à un élément allongé (220) et présentant chacun une surface intérieure (230a-d) formant au moins une partie dun trou sensiblement rectangulaire (232) conçu pour recevoir un arbre rectangulaire. La pluralité déléments flexibles forment une surface extérieure involutée (234a-d) destinée à entrer en contact avec une surface intérieure involutée (208) dune ouverture (206) dun levier (210). Louverture du levier est conçue pour amener la pluralité déléments flexibles à être déplacés en direction dun axe (242) de lélément allongé pour amener la surface intérieure de chacun des éléments de la pluralité déléments flexibles à entrer en contact avec une ou plusieurs surfaces de larbre rectangulaire.

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