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. 15, 2011
Filed:
May. 10, 2006
Minoru Hirata, Toyokawa, JP;
Takayuki Komiyama, Toyokawa, JP;
Minoru Hirata, Toyokawa, JP;
Takayuki Komiyama, Toyokawa, JP;
Sintokogio, Ltd., Aichi, JP;
Abstract
A flaskless molding method, wherein a match plate () is held between an upper flask () and a lower flask () and squeeze plates () and () are inserted into the openings of the upper flask () and the lower flask () to form an upper manufacturing space and a lower manufacturing space with initial volumes. A foundry sand is filled in the upper and lower manufacturing spaces with the initial volumes through the supply ports of the flask () and () (first filling). Next, the squeeze plates () and () are retreated to expand the upper and lower manufacturing spaces more than the initial volumes. The foundry sand is filled again in the expanded upper and lower manufacturing spaces through the supply ports (second filling). After the second filling is completed, the squeeze plates () and () are advanced to compress the foundry sand in the upper and lower manufacturing spaces so as to manufacture the upper and the lower flasks stacked on each other.