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:
Mar. 02, 2010
Filed:
May. 24, 2004
Michael P. Schoemann, Waterford, MI (US);
Raymond Cummins, Wixom, MI (US);
Kenneth Jarzynski, Auburn Hills, MI (US);
Michael P. Schoemann, Waterford, MI (US);
Raymond Cummins, Wixom, MI (US);
Kenneth Jarzynski, Auburn Hills, MI (US);
International Automotive Components Group North America, Dearborn, MI (US);
Abstract
The present invention provides a method for molding an over-molded part by a multi-shot molding method. The method of the invention comprises combining a first mold section having one or more retractable tool portions and a second mold section to form a first mold cavity. A first thermoplastic resin is injected into a first mold cavity to form a first molded part. Subsequently, the second mold section is separated from the second mold section such that the first molded part remains in contact with the first mold section. The retractable tool portion is retracted to expose one or more channels. Next, a third mold section is combined with the first mold section to form a second mold cavity. A second thermoplastic resin is then injected into the second mold cavity to form the over-molded part which may then be removed from the mold section. The present invention also provides a method in which a first mold section having one or more retractable tool portions is combined with a second mold section also having one or more tool sections. Finally, the present invention also provides a molding apparatus which executes the methods of the invention.