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.

Date of Patent:
May. 27, 2014

Filed:

Mar. 30, 2010
Applicants:

Fumio Sato, Tochigi, JP;

Takashi Yoshida, Tochigi, JP;

Toshiya Hirata, Tochigi, JP;

Koji Saito, Tochigi, JP;

Inventors:

Fumio Sato, Tochigi, JP;

Takashi Yoshida, Tochigi, JP;

Toshiya Hirata, Tochigi, JP;

Koji Saito, Tochigi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B07B 13/00 (2006.01); B24B 57/00 (2006.01); B07B 1/14 (2006.01);
U.S. Cl.
CPC ...
B07B 1/14 (2013.01); B24B 57/00 (2013.01); B07B 2201/04 (2013.01);
Abstract

An abrasive grains classifying apparatus is used to classify abrasive grains based on their sizes that can be determined by distances between mutually opposed surfaces of the respective abrasive grains. The abrasive grains classifying apparatus is provided with: a first gap portionwhich includes two rollersanddisposed at a predetermined distance Lfrom each other and also which classifies the abrasive grainsinto first abrasive grainsandcapable of passing through between the rollersandand second abrasive grainsincapable of passing through between the two rollersand; and a second gap portionwhich includes two rollersanddisposed at a distance Lsmaller than the distance Lin the first gap portionfrom each other.


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