A frictional engagement device

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

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Details

F16D 41/00 (2006.01) F16D 41/07 (2006.01)

Patent

CA 2516949

A device for frictional inter-engagement between two mutually movable parts (13, 14). A lever mechanism exerts counter-directed pressing forces towards both parts to transfers movement between them. A lever (25) has a free lever end (27) contacted by a first (13) of the parts, and opposite to the free end a part-cylindrical convex surface (31) journalled in a part-cylindrical concave bearing surface (33). In order to eliminate the risk of jamming of the lever due to excessive surface pressure, it is journalled by means of rolling bodies, preferably cylindrical bodies (34).

La présente a trait à un dispositif d'engagement mutuel à frottement entre deux pièces mutuellement mobiles (13, 14). Un mécanisme de levier exerce des forces de compression en directions opposées vers les deux pièces pour un transfert de déplacement entre elles. Un levier (25) comprend une extrémité de levier libre (27) en contact avec une première (13) des deux pièces, et à l'opposé de l'extrémité libre une surface convexe partiellement cylindrique (31) tourillonnée dans une surface de support concave partiellement cylindrique (33). Afin d'éliminer tout risque de blocage du levier dû à une pression superficielle excessive, celui-ci est tourillonné au moyen d'éléments roulants, de préférence des éléments cylindriques (34).

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