초록 ▼

A composite molded plastic brake piston which comprises a phenolic resin body that is co-molded to a skin which comprises a phenolic sheet molding compound. The skin adheres to at least one surface of the article. The phenolic resins of the two compounds are cross-linked into a molded product which

A composite molded plastic brake piston which comprises a phenolic resin body that is co-molded to a skin which comprises a phenolic sheet molding compound. The skin adheres to at least one surface of the article. The phenolic resins of the two compounds are cross-linked into a molded product which resists separation by mechanical, chemical or thermal methods.

대표청구항 ▼

[ What I claim is:] [1.] In a composite molded plastic disc brake piston having a cylindrical phenolic resin body and having an open end and a closed end, the improvement comprising a phenolic sheet molding compound skin that is simultaneously co-molded to the open end of the piston to provide a dis

[ What I claim is:] [1.] In a composite molded plastic disc brake piston having a cylindrical phenolic resin body and having an open end and a closed end, the improvement comprising a phenolic sheet molding compound skin that is simultaneously co-molded to the open end of the piston to provide a disc brake piston with improved heat resistance wherein the co-molded phenolic resin skin and the phenolic resin of the phenolic resin body are cross linked and chemically react with one another during molding in a continuous resin reaction across an interface between the skin and the body to form an integrated unified molded product which resists separation of the skin and resin body by mechanical, chemical or thermal methods.