Centrifugal backspin retarder and drive head for use therewith

Details Centrifugal backspin retarder and drive head for use therewith Centrifugal backspin retarder and drive head for use therewith

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 59/00 (2006.01) F16D 51/00 (2006.01) F16D 55/36 (2006.01) F16D 65/14 (2006.01) F16D 65/00 (2006.01)

Patent

CA 2322656

A backspin retarder for a shaft comprises a brake mechanism including a stationary brake member and opposed brake members rotatable with the shaft and movable between braking position in which the movable brake members engage the stationary brake member and a non-braking position in which the movable brake members are removed from the stationary brake member and a brake control mechanism responsive to the direction of rotation of the shaft for disabling the brake mechanism when the shaft rotates in a forward direction and for enabling the brake mechanism when the shaft rotates in a reverse direction.

Ce ralentisseur de rétro-vrillage pour arbre, qui comporte un mécanisme de freinage comprenant un élément fixe de freinage et des éléments de freinage opposés pouvant entrer en rotation avec l'arbre et passer d'une position de freinage dans laquelle ils sont au contact de l'élément fixe de freinage à une position de non-freinage dans laquelle ils ne sont plus en contact avec l'élément fixe de freinage, comporte également un mécanisme de commande de freinage qui, réagissant au sens de rotation de l'arbre, met hors de fonctionnement le mécanisme de freinage lorsque l'arbre tourne en rotation avant et active ce même mécanisme lorsque l'arbre tourne dans le sens inverse.

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