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:
Jun. 12, 2007
Filed:
Nov. 17, 2003
Kazuo Seki, Tokyo, JP;
Yasuharu Ooishi, Tokyo, JP;
Kazuo Seki, Tokyo, JP;
Yasuharu Ooishi, Tokyo, JP;
Yamatake Corporation, Tokyo, JP;
Abstract
One or a plurality of branch paths () having opening end portions () formed in the vicinity of an inner wall surface of a main path () through which a fluid flows so as to point the upstream or downstream side of the main path, and causing part of the fluid running in the vicinity of the inner wall surface of the main path to flow therethrough via the opening end portions, to thereby detect flow rates of the fluids running through the branch paths by using a thermal flow sensor (). Preferably, a plurality of opening end portions () pointed toward the upstream side or a plurality of opening end portions () pointed toward the downstream side are arranged at regular intervals along the path cross section of the main path around the axis of the main path, to thereby measure a fluid flow with high accuracy.