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. 07, 1989
Filed:
Jan. 03, 1989
Applicant:
Inventor:
Wendelin Weimann, Klettgau, DE;
Assignee:
Georg Fischer AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
164154 ; 164169 ;
Abstract
A process and apparatus for compacting granular molding materials in a mold cavity defined by a pattern plate, a mold box arranged thereon, a filling frame on the molding box and a pressure chamber comprises applying pressure to the exterior peripheral wall surfaces of the molding box which pressure acts in opposition to the compacting pressure applied to the granular materials in the mold cavity. The pressure applied to the exterior walls of the molding box is independent of the compacting pressure applied over the granular molding materials.