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:
Aug. 28, 2012
Filed:
Mar. 04, 2010
Takato Kaya, Hiroshima, JP;
Katsuyoshi Hashimoto, Hiroshima, JP;
Kiyotoshi Nakaue, Hiroshima, JP;
Yuichi Nagahara, Hiroshima, JP;
Ken Shimazutsu, Hiroshima, JP;
Takato Kaya, Hiroshima, JP;
Katsuyoshi Hashimoto, Hiroshima, JP;
Kiyotoshi Nakaue, Hiroshima, JP;
Yuichi Nagahara, Hiroshima, JP;
Ken Shimazutsu, Hiroshima, JP;
Kotobuki Engineering & Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A sand making apparatus comprises: a crusher configured to crush crushed materials; a first sorter configured to sort the crushed materials obtained from the crusher into coarse particles, fine particles, and powders through air sorting by air blowing and screening sorting by a screen; a negative pressure collection unit configured to suck and collect the powders from the first sorter; and a second sorter disposed between the first sorter and the negative pressure collection unit, the second sorter configured to sort the powders into coarse powders and fine powders through negative pressure of the negative pressure collection unit.