Patent ID: 6443027
Filing Date: 2002-09-03
Classification: B60T,B62L,Y10T

Abstract:
A brake operating device for a cable actuated bicycle brake, said device comprising:a mounting bracket attached to a bicycle handlebar and having a cable guide, and a brake lever pivotally attached about a lever pivot to said mounting bracket one end of the cable is routed along the cable guide, and directly attached to said brake lever at a fixed point thereby forming an effective cable attachment point, said mounting bracket and said brake lever configured and the effective cable attachment point disposed relative to the lever pivot such that actuation of said brake lever about the lever pivot displaces the cable in a direction transverse to the cable length towards the lever pivot, an effective radius of the cable being defined as a perpendicular distance from the cable; a length of the effective radius when said brake lever is in a fully retracted position being at least 1.33 times as long as a length of said effective radius when the brake lever is in a fully deflected position whereby the brake operating device achieving at least a 33% increase in mechanical advantage over the actuation range of the brake lever from the fully retracted to the fully deflected position.