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. 04, 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 parting lines on the exterior surfaces of the mold package. An assembly of multiple cores (core package) is formed and includes multiple inter-core parting lines extending in different directions on exterior surfaces of the core assembly. The core package is disposed between a base core and a cover core configured to enclose the core package and form a single continuous exterior parting line about the assembled mold package.