Patent ID: 6095294
Filing Date: 2000-08-01
Classification: B60T,F16D,Y10T

Abstract:
A brake for a rotating member driven by a power source, comprising:an attachment bracket;a cantilever leaf spring having a root end mounted to said bracket, and a distal end movable toward and away from said rotating member;a brake pad attached to said cantilever leaf spring and normally engaging said rotating member;a cable system coupled to said cantilever leaf spring and movable in a first direction moving said distal end of said cantilever leaf spring away from said rotating member such that said brake pad disengages said rotating member, and movable in a second direction permitting said distal end of said cantilever leaf spring to move toward said rotating member such that said brake pad engages said rotating member;a transfer member mounted to said bracket and connected to said cable system and to said cantilever leaf spring and translating movement of said cable system into movement of said distal end of said cantilever leaf spring;wherein:said transfer member pivots on said bracket;said transfer member is a double pivot member pivoting on said bracket at a first pivot point, and pivoting on said bracket at a second pivot point spaced from said first pivot point;said transfer member pivots on said bracket in one rotational direction at said first pivot point moving said distal end of said cantilever leaf spring away from said rotating member such that said brake pad disengages said rotating member;said transfer member pivots on said bracket in the opposite rotational direction at said first pivot point permitting said distal end of said cantilever leaf spring to move toward said rotating member such that said brake pad engages said rotating member;said transfer member pivots on said bracket in said opposite rotational direction at said second pivot point moving said distal end of said cantilever leaf spring away from said rotating member such that said brake pad disengages said rotating member;said transfer member pivots on said bracket in said one rotational direction at said second pivot point permitting said distal end of said cantilever leaf spring to move toward said rotating member such that said brake pad engages said rotating member;said bracket includes first cable guide structure guiding said cable system for movement in a first translational direction actuating said transfer member to pivot in said one rotational direction at said first pivot point, and guiding said cable system for movement in a second translational direction actuating said transfer member to pivot in said opposite rotational direction at said first pivot point due to the bias of said cantilever leaf spring such that said brake pad engages said rotating member;said bracket includes second cable guide structure for guiding another cable system for movement in a direction generally opposite to said first translational direction and actuating said transfer member to pivot in said opposite rotational direction at said second pivot point, and guiding said other cable system for movement in a direction generally opposite to said second translational direction and actuating said transfer member to pivot in said one rotational direction at said second pivot point due to the bias of said cantilever leaf spring such that said brake pad engages said rotating member;and comprising a first trunnion mounted to said bracket and providing said first pivot point, and a second trunnion mounted to said bracket and providing said second pivot point, and wherein said cantilever leaf spring extends beyond said brake pad to said distal end and then turns at said distal end away from said rotating member and is connected to said transfer member at a point between said first and second trunnions.