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. 30, 2004
Filed:
Aug. 30, 2002
Shigeaki Yamamoto, Toyokawa, JP;
Kuniyasu Mori, Toyokawa, JP;
Ryoji Kanayama, Toyokawa, JP;
Hisashi Harada, Toyokawa, JP;
Hiroaki Tokita, Toyokawa, JP;
Kazuo Sugimoto, Toyokawa, JP;
Takehiko Matsumoto, Toyokawa, JP;
Hiroyasu Makino, Toyokawa, JP;
Yasunori Yoshida, Toyokawa, JP;
Sintokogio, Ltd., Aichi-ken, JP;
Abstract
A method and apparatus are provided to process collected sand. This method and apparatus allow the moisture content to be adjusted and the addition of a binder to be facilitated to renew the collected sand as casting sand for future use. Also, defective castings are prevented when they are made by a main mold using the renewed casting sand. The sand-collecting means can be compact. The method is performed and the apparatus is operated by separating a main mold of green sand, after casting is conducted, into parts unaffected and affected by the molten metal heat, adjusting the moisture content of the part unaffected by molten metal heat for use as facing sand in the next main mold making, and adding a binder and adjusting the moisture content of the part affected by the molten metal heat for use as back sand in making the next main mold.