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. 07, 1989
Filed:
Jun. 24, 1988
Applicant:
Inventors:
Karl D Voss, Standish, MI (US);
James B Mercer, Saginaw, MI (US);
Anthony C Greanias, Saginaw, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164154 ; 164 63 ; 164255 ; 164256 ; 164339 ; 164341 ;
Abstract
Apparatus for the countergravity casting of molten metal by immersing of gas-permeable multi-piece mold in an underlying pot of molten metal includes a motor actuated plunger for pressing the pieces into sealing engagement with each other without the need for glue therebetween and for resisting destructive flexure of the mold incident to the application of casting vacuum thereto.