Brake for a bicycle

Claim 1

A brake for a bicycle, comprising a pair of mounting bases each comprising a base member having an end face with a shaft projecting from said end face, a pair of cantilevers each having a boss and lever portions and supported rotatably to a said shaft at one of said mounting bases respectively, a pair of brake shoes fixed to said lever portions at said cantilevers respectively, a pair of return springs interposed between said mounting bases and said cantilevers respectively, a pair of cylindrical members covering said springs, said cylindrical members forming spring chambers housing said springs, each said return spring comprising a coil spring having at each end an extension extending axially with respect to said coil spring, each said cylindrical member having (i) a through bore receiving a said shaft of a corresponding one of said mounting bases and (ii) a bottom face which contacts a said end face of said corresponding one of said mounting bases, each said cylindrical member having a retaining bore at said bottom face for receiving one said extension of said coil spring and each mounting base having a retaining bore at said end face for receiving said one extension of said coil spring, said one extension of said coil spring passing through a said retaining bore of a said cylindrical member and being received in a said retaining bore of a corresponding said mounting base to thereby fix each cylindrical member to a corresponding said mounting base, the other said extension of each said coil spring being fixed to rotate with a respective said cantilever, and said brake further comprising rotation restricting means for restricting rotation of said cantilevers relative to said cylindrical members.