Banner & Witcoff, Ltd.
Brake arm with adjustable applied force ratio for a bicycle brake device
 A brake arm for a brake device of a bicycle includes first and second arm members and a locking unit. The first arm member has an elongated arm body with an upper end portion, a lower end portion and a shoe mounting portion between the upper and lower end portions. The upper end portion is formed with a threaded hole. The lower end portion is adapted to be secured pivotally on the bicycle. The mounting portion has a brake shoe attached thereto. The second arm member is formed as an elongated member with first and second end portions and an intermediate portion between the first and second end portions. The second arm member is provided with a mounting hole unit which extends from the first end portion toward the second end portion. The second end portion of the second arm member is provided with a wire attaching unit that is adapted to be connected operably to the brake device. The locking unit extends through the mounting hole unit in the second arm member and engages threadedly the threaded hole in the upper end portion of the arm body of the first arm member, thereby mounting adjustably the second arm member on the first arm member to permit varying of distance between the wire attaching unit and the lower end portion of the first arm member. 
Ah-Ping Lin
Y B
Y10T B62L
additional inventional
Jung-Hua Chi-Cheng
Li Lai