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:
Aug. 03, 1999
Filed:
May. 21, 1997
Applicant:
Inventors:
Azita Khalili, Saarbrucken, DE;
Herbert Smetan, Rehlingen, DE;
Assignee:
VAW alucast GmbH, Dillingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164127 ; 164356 ;
Abstract
A method of casting an engine block of aluminum whose working surfaces, after milling the interiors of the cylinders, are coated with a harder metal, particularly nickel, includes inserting permanent molds in the sand mold and manufacturing the cylinder interiors of a metal which has a thermal expansion coefficient of greater than 18.times.10.sup.-6 K.sup.-1.