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:
Jul. 21, 2020
Filed:
Apr. 20, 2017
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Akira Uenodan, Ibaraki, JP;
Tomoaki Saito, Ibaraki, JP;
Naoki Saito, Ibaraki, JP;
Masashi Fukaya, Tokyo, JP;
Shinobu Tashiro, Ibaraki, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-Shi, JP;
Abstract
A thermal flowmeter includes: a sub-passage () that takes a part of a gas () to be measured flowing through a main passage; and a flow measurement unit () disposed inside the sub-passage (). The sub-passage () includes: a first passage () provided on a measurement surface () side of the flow measurement unit (); a second passage () provided on a back surface () side of the flow measurement unit (); and an inclined passage () provided on an upstream side of an inlet () of the first passage in a forward flow direction F of the gas () to be measured in the first passage ().