Spiral-type coupling

Details Spiral-type coupling Spiral-type coupling

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 41/08 (2006.01) F16D 15/00 (2006.01) F16D 41/066 (2006.01) B60K 17/35 (2006.01) F16H 48/16 (2006.01)

Patent

CA 2315873

A spiral-type coupling (10) consists of a tubular slipper (14) between a tubular member (12) and a race (6), there being engageable tubular friction surfaces (20, 36) on the slipper (14) and the race (16), and facing pairs of clockwise and counterclockwise spiral surfaces (18a, 18b, 22a, 22b) on the tubular member (12) and the slipper (14) defining therebetween a channel (28) receiving roller members (30), there being an actuator engageable with the slipper (14) to provide two, three or four different modes of operation (e.g., lock up, freewheel in both directions, freewheel in one direction and/or the other).

L'invention se rapporte à un manchon de type en spirale (10) comprenant un patin tubulaire (14) disposé entre un élément tubulaire (12) et un anneau (16), des surfaces tubulaires (20, 36) de mise en prise par frottement recouvrant le patin (14) et l'anneau (16), ainsi que des paires de surfaces opposées enroulées en spirale dans le sens des aiguilles d'une montre et dans le sens contraire (18a, 18b, 22a, 22b), recouvrant l'élément tubulaire (12) et le patin (14) et délimitant un canal (28) situé entre ces deux pièces et destiné à accueillir des galets (30). Un actionneur est mis en prise par le patin (14) pour permettre deux ou trois, voire quatre modes de fonctionnement différents (p.ex., verrouillage, roue libre dans les deux sens, roue libre dans l'un des sens et/ou dans l'autre).

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