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. 15, 2017
Filed:
Nov. 06, 2013
Yoshinori Koyama, Nagasaki, JP;
Osamu Shinada, Nagasaki, JP;
Yuichiro Kitagawa, Nagasaki, JP;
Takao Hashimoto, Tokyo, JP;
Yoshinori Koyama, Nagasaki, JP;
Osamu Shinada, Nagasaki, JP;
Yuichiro Kitagawa, Nagasaki, JP;
Takao Hashimoto, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
The reliability of backwashing valves constituted of first backwashing valves and second backwashing valves is ensured. A first backwashing valve (backwashing-gas rear valve) () that controls gas for backwashing and a second backwashing valve (backwashing-gas front valve) () that operates at slower speed than the first backwashing valve () are disposed, in a series including two or more thereof, at backwashing-gas introducing pipes individually provided for each of the filter blocks.