Cam actuated drum brake

Details Cam actuated drum brake Cam actuated drum brake

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 51/00 (2006.01) F16D 65/08 (2006.01) F16D 65/14 (2006.01)

Patent

CA 2574056

A cam (38) for a brake (20) is provided that allows for greater brake shoe travel and thicker brake linings (50) while providing the same or greater mechanical force as compared to conventional cams. One or more lobes (62,64) of the cam include multiple portions (62A-C,64A-C) having varying profiles in axial cross-section. The variation in the cam profiles results in a cam in which the outermost ends or tips of the lobes are longer than in conventional cams yet retain the same mechanical strength.

L'invention concerne une came (38) pour un frein (20) qui permet un plus grand déplacement du segment de frein et des garnitures de frein plus épaisses (50) tout en fournissant une force mécanique égale ou supérieure par comparaison avec des cames conventionnelles. Un ou plusieurs lobes (62, 64) de la came incluent de multiples parties (62A-C, 64A-C) ayant des profils variés en termes de section transversale axiale. La variation des profils de came résulte en une came dans laquelle les extrémités les plus externes ou les bouts des lobes sont plus longs que dans les cames conventionnelles et conservent cependant la même force mécanique.

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