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. 18, 2003
Filed:
Jun. 11, 2001
Applicant:
Inventor:
Larry R. Shade, Stryker, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D 3/304 ; B22D 1/724 ;
U.S. Cl.
CPC ...
B22D 3/304 ; B22D 1/724 ;
Abstract
An engine block mold package is assembled from resin-bonded sand cores in a manner that reduces contamination of the engine block cast in the mold package by loose sand abraded off the cores during assembly. An assembly of multiple cores (core package) of the engine block mold package is formed apart from a base core. The core package is cleaned to remove loose sand therefrom. The cleaned core package then is positioned on the base core followed by assembly of a cover core to complete the engine block mold package for casting of an engine block therein.