The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1976
Filed:
Jun. 16, 1975
Norman C Haas, Wheaton, IL (US);
Keith W Christiansen, Fox River Grove, IL (US);
Chicago Rawhide Manufacturing Company, Elgin, IL (US);
Abstract
A mold assembly for injection molding of precision composite articles, which is particularly adapted for use in making highly precise oil seals having a rubber body bonded to a metal mounting flange. The assembly comprises a bottom mold member adapted to be supported in fixed relation to a vertically reciprocable top mold member, the bottom member has means forming an upwardly opening annular recess for supporting therein a circular oil seal stamping of generally L-shaped cross section with an inner marginal portion extending in a radial direction into a mold cavity formed by spaced confronting surface portions of top and bottom mold members when in the closed position, and the top mold member having a downwardly opening annular recess in which a spring pressed stripper plate is retained for limited vertical movement by means of coiled spring member insertable in a groove in an edge of the stripper plate when the stripper plate is positioned in the recess in the top mold member enabling the mold assembly to be used for molding of oil seal units having stampings of different radial and axial dimensions.