Composite brake drum and method for producing same
AssigneeDayton-Walther Corporation
InventorDonald R. Wall
Life of this patent
Estimating the term…
Abstract
A composite brake drum for use in a drum brake assembly includes a one-piece mounting flange and shell and a liner cast integrally in a shell portion thereof. The method for forming the composite brake drum of this invention includes the steps of: (a) providing a generally flat sheet of a first material; (b) forming the flat sheet into a generally flat circular blank; (c) subjecting to the blank to a series of metal forming operations to produce a one piece mounting flange and shell; and (d) casting a liner formed from a second material within the one-piece mounting flange and shell to thereby produce the composite brake drum.
Claims19
A composite vehicle brake drum comprising:
- a one-piece spun formed metal brake drum component defining a center longitudinal axis and including a cylindrical shell, a mounting flange extending radially inwardly from one end of said shell toward said center longitudinal axis, and an annular lip extending radially inwardly from an opposite end of said shell toward said center longitudinal axis;
- said shell, said mounting flange, and said lip cooperating to define a mold cavity;
- and
- said mold cavity of said brake drum component then having a liner centrifugally cast therein.
A method for producing a composite vehicle brake drum comprising the steps of:
- (a) providing a generally circular metal blank;
- (b) spin forming the metal blank to produce a one-piece brake drum component defining a center longitudinal axis and including a cylindrical shell, a mounting flange extending radially inwardly from one end of the shell toward the center longitudinal axis, and an annular lip extending radially inwardly from an opposite end of the shell toward the center longitudinal axis, and wherein the shell, the flange, and the lip cooperate to define a cylindrical mold cavity;
- and
- (c) subsequent to step (b), centrifugally casting a liner in situ within the mold cavity of the brake drum component to thereby produce the composite vehicle brake drum.
Dependencies are inferred from the claim text.