Disc brake mounting structure

A disc-brake comprising a generally right-angle dihedral-shaped fixed support, a rotatable disc fixed to a member to be braked, a pad mounted for movement perpendicular to the plane of the disc on each side thereof, a control unit and a ring-like transfer member mounted for movement perpendicular to the disc, said control unit including a cylinder and two pistons mounted for sliding movement in opposite directions in said cylinder, one of said pistons acting directly on a first pad and the other of said pistons acting indirectly on the second pad through the intermediary of said transfer member, said ring-like transfer member extending around said fixed support, the control unit, the pads and a portion of said disc, said generally right-angle dihedral-shaped fixed support comprising a plate member parallel to the disc and a positioning member perpendicular to the disc radially outward of and having its radially inner surface facing the edge of the disc, said plate member and said positioning member being fixed relative to each other, said plate member having a surface facing the control unit and including a frame portion for limiting the movement of the first pad in both directions of rotation of the disc and in at least one radial direction, said positioning member including at least one longitudinal support abutment for radially retaining the second pad relative to the disc, at least two transverse support abutments for limiting the movement of the second pad in both directions of rotation of said disc, and transverse support abutments being disposed at the ends of said positioning member, two lateral extensions on said second pad and being disposed on opposite sides of said positioning member for contacting said transverse support abutments, said transfer member having a radially outwardly directed supporting surface that faces the positioning member, said second pad having two opposed support surfaces one of which contacts said transfer member supporting surface and the other of which contacts said longitudinal support abutments on said positioning member, said surfaces and abutments extending transversely of the plane of said disc and said support surfaces extending transversely of a radius of said disc that passes through said support surfaces, and resilient means between said transfer member and said fixed support urging said transfer member radially outwardly, the positioning member and the transfer member resiliently gripping the second pad radially between themselves.