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:
Dec. 19, 1995
Filed:
Oct. 27, 1994
Hans Leutwiler, Schaffhausen, CH;
Kurt Fischer, Schaffhausen, CH;
Georg Fischer Giessereianlagen AG, Schaffhausen, CH;
Abstract
The device comprises a pressure housing for storing a gaseous medium under pressure, a pattern plate for supporting a pattern, and a molding box of height H associated with the pattern plate and defining therewith a molding space for receiving the granular molding material to be compacted. A valve separates the pressure housing from the molding space, and selectively communicates the gaseous medium in the pressure housing with the molding space for compacting the granular molding material. A mechanical compaction plate is mounted in the molding space and defines with the pattern plate a volume of dead space. An adjustment element varies the volume of the dead space.