Importance

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Abstract

A piston for use in a disc brake assembly includes: a hollow plastic body defining an axis and including an open end and a closed end, the body defining an inner surface and an outer surface extending axially between the open end and the closed end; and a first steel cover integrally molded about portions of the outer surface and the closed end of the body, the first cover including an outer side wall and an end wall, the outer side wall of the first cover extending axially inwardly toward the open end along a portion of the outer surface of the body, and the end wall of the first cover extending radially inwardly along a portion of the closed end of the body. The piston preferably includes a generally annular second steel cover integrally molded about the open end of the body, the second cover including an end wall, an inner side wall, and an outer side wall, the end wall of the second cover extending about the open end of the body, and the inner and outer side walls of the second cover extending axially inwardly toward the closed end along a portion of the inner and outer surfaces of the body, wherein the first cover is spaced apart from the second cover.

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First Claim