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:
Sep. 09, 2003
Filed:
Jun. 11, 2001
Applicant:
Inventors:
Brian D. Kaminski, Lake Orion, MI (US);
Douglas P. Leu, Wauseon, OH (US);
Norman L. Neuenschwander, Milford, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D 3/304 ; B22C 9/10 ;
U.S. Cl.
CPC ...
B22D 3/304 ; B22C 9/10 ;
Abstract
An engine block mold package includes a barrel crankcase core having a plurality of barrels on each of which a respective cylinder bore liner is disposed. Each cylinder bore liner includes an inside diameter that is tapered along at least a portion of its length to match a draft angle present on the barrels to permit removal of the barrel crankcase core from a core box in which it is formed.