F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 31/04 (2006.01)
Patent
CA 2367066
A tension control arrangement including a plurality of cams (5) disposed about an opening (21) that accommodates a bolt (3) to which a nut (11) is intended to be secured. Each of the cams has a contoured outer surface (6), and each of the cams (5) is rotatably supported such that the contoured outer surface (6) operatively engages both the base (1) and a contact member (7, 17) interposed between the cam (5) and the nut (11). A lever assembly (20) is operatively coupled to the cams (5), such that movement of the cams is substantially restricted to rotational motion from a first position in which the nut (11) is engaged with the bolt (3) and tightened by hand until it is seated against the contact member (7, 17), to a second position in which the bolt (3) is elongated to achieve a predetermined bolt tension.
La présente invention concerne un agencement de contrôle de tension d'un boulon comportant une pluralité de cames (5) disposées autour d'un orifice (21) recevant un boulon (3) auquel doit se fixer un écrou (11). Chacune des cames présente une surface externe profilée (6), et chacune des cames (5) est maintenue en rotation de sorte que la surface externe profilée (6) s'engage en fonctionnement à la fois la base (1) et un organe de contact (7, 17) interposé entre la came (5) et l'écrou (11). Un ensemble de levier (20) est couplé en fonctionnement aux cames (5) de sorte que le déplacement des cames est sensiblement limité à un mouvement de rotation à partir d'une première position dans laquelle l'écrou (11) est engagé (11) au boulon et serré manuellement jusqu'à s'appliquer contre l'organe de contact (7, 17), vers une deuxième position dans laquelle le boulon (3) est allongé de manière à atteindre une position prédéterminée de tension du boulon.
Gowling Lafleur Henderson Llp
Murphy Stephen
LandOfFree
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