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:
May. 24, 1988
Filed:
Jul. 27, 1987
Applicant:
Inventors:
James B Mercer, Saginaw, MI (US);
Karl D Voss, Standish, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164255 ; 164 63 ; 164256 ; 164361 ; 164363 ;
Abstract
Apparatus for the shaping of metal in a bottom-gated mold by the vacuum-induced countergravity casting method including an upstanding levee on the periphery of the drag and circumscribing the chamber-to-mold joint and/or the cope-to-drag joint for isolating such joint(s) when the mold is immersed in an underlying melt.