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:
Nov. 09, 1993
Filed:
Apr. 08, 1991
Applicant:
Inventors:
David I Yun, Murrysville, PA (US);
Ralph R Sawtell, Monroeville, PA (US);
Warren H Hunt, Export, PA (US);
H Robert Baumgartner, Monroeville, PA (US);
Eric T Streicher, New Kensington, PA (US);
Michael F Ehman, Franklin Park Township, Allegheny County, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164 97 ; 164 98 ; 164113 ;
Abstract
Metal matrix composites are manufactured in a vacuum die casting machine. Solid aggregate material, at least 65 volume percent, is placed in a die, the die is evacuated and heated, and molten metal is driven by a piston to infiltrate the solid aggregate material where it subsequently solidifies to form a metal matrix composite.