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. 17, 2015
Filed:
Nov. 01, 2013
Applicant:
Fanuc Corporation, Minamitsuru-gun, Yamanashi, JP;
Inventor:
Mitsuyoshi Ishihara, Yamanashi, JP;
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 29/60 (2006.01); B01D 35/02 (2006.01); B01D 29/66 (2006.01); B23Q 11/10 (2006.01);
U.S. Cl.
CPC ...
B01D 29/605 (2013.01); B01D 29/66 (2013.01); B01D 35/02 (2013.01); B23Q 11/1069 (2013.01);
Abstract
A cutting fluid filtration device attached to a machine tool has the function of backwashing a filter for filtering impurities in a cutting fluid when the filter is clogged. Whether or not the filter is clogged is determined by integrating the time during which the liquid level of the cutting fluid in a clean fluid tank falls below a lower-limit position by means of a sensor configured to detect the height of the liquid level of the cutting fluid. When a preset reference value is exceeded by the resulting integrated value, it is determined that the filter is clogged.