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. 10, 1992
Filed:
Apr. 19, 1991
Applicant:
Inventors:
Kurt Fischer, Schaffhausen, CH;
Hans Leutwiler, Schaffhausen, CH;
Assignee:
Georg Fischer AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
164 38 ; 164195 ;
Abstract
Foundry moldings are manufactured in an economic manner without increasing cycle time comprises a 3-stage method including the steps of feeding the molding material by means of compressed air into a molding container and thereafter precompressing the molding material by applying a pressure surge to the surface thereof and thereafter recompressing said precompressed molding material to final compression. The resulting foundry moldings are homogeneous in structure and structural integrity.