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:
Jan. 04, 2022
Filed:
Jun. 19, 2019
Fujikin Incorporated, Osaka, JP;
Kaoru Hirata, Osaka, JP;
Shinya Ogawa, Osaka, JP;
Katsuyuki Sugita, Osaka, JP;
Kouji Nishino, Osaka, JP;
Nobukazu Ikeda, Osaka, JP;
FUJIKIN INCORPORATED, Osaka, JP;
Abstract
A flow rate control method for raising a flow rate performed in a flow control device having a first control valve, a second control valve downstream of the first control valve, and a pressure sensor for measuring a pressure between the first and the second control valves, comprises a step (a) of determining a pressure remaining downstream of the first control valve in a state of closing the second control valve, and a step (b) of controlling the pressure remaining downstream of the first control valve by adjusting the opening degree of the second control valve based on the output of the pressure sensor to flow the fluid downstream the second control valve at the first flow rate.