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. 16, 2021
Filed:
May. 13, 2019
Applicant:
Nihon Genryo Co., Ltd., Kanagawa, JP;
Inventor:
Yasuhiro Saito, Kanagawa, JP;
Assignee:
NIHON GENRYO Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 24/46 (2006.01); B01D 24/10 (2006.01); B01D 24/12 (2006.01); B01D 29/68 (2006.01);
U.S. Cl.
CPC ...
B01D 24/4673 (2013.01); B01D 24/105 (2013.01); B01D 24/12 (2013.01); B01D 24/4684 (2013.01); B01D 29/68 (2013.01);
Abstract
A filtration apparatus includes a filtration tank; a layer of filtration media that filters supplied raw water by passing the raw water therethrough within the interior of the filtration tank; and a screw cleansing mechanism having a cylindrical outer cylinder which is provided within the filtration tank in a vertical orientation, a spiral shaped screw which is provided such that the long axis thereof extends in the longitudinal direction of the outer cylinder, and a screw driving member for rotating the screw, that scrubs and cleans filtration media by rotating the screw. The screw is in the shape of a coil spring.