Patent ID: 6401880
Filing Date: 2002-06-11
Classification: F16D

Abstract:
A brake rotor for an automotive vehicle braking system comprising:a) a brake rotor hat including, i) a mounting portion that includes a circular flat surface, a first set of apertures for receiving fasteners for attachment to a vehicle wheel and an aperture for alignment with a hub of said wheel; ii) a cylindrical wall connected to said mounting portion and having an outer cylindrical surface, a first end and a second end; b) a peripheral flange extending radially outward from said second end of said cylindrical wall and terminating in a free edge, said flange having a first surface and a second surface; c) a plurality of webs spaced circumferentially about and extending radially outward from said outer cylindrical surface of said cylindrical wall, each of said webs having a first wall and a second wall, a first side attached to said cylindrical wall, a second side attached to said peripheral flange, a third rounded free side and a fourth side, said first wall and said second wall being spaced so said webs increase in thickness as they extend radially outward, said first wall being generally parallel over a substantial portion of its surface to an opposing surface of a second wall of an adjacent web for at least partially defining passageways extending radially outward; d) an annular ring attached to said fourth side of said webs and having a first surface, a second surface and an inner and outer peripheral edge, said second surface of said ring opposing and substantially parallel to said second surface of said flange, said inner edge opposing and spaced apart from a central portion of said outer cylindrical surface of said cylindrical wall for cooperatively forming openings into said passageways with said webs, said openings having cross-sectional dimensions substantially similar to cross-sectional dimensions of said passageways.