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:
Oct. 12, 2021
Filed:
Jul. 17, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Akira Uenodan, Hitachinaka, JP;
Takayuki Yogo, Hitachinaka, JP;
Tsubasa Watanabe, Tokyo, JP;
Takahiro Miki, Hitachinaka, JP;
Shinobu Tashiro, Hitachinaka, JP;
Hiroaki Hoshika, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Abstract
Provided is a thermal-type flowmeter which can prevent a reduction of flow rate accuracy and reliability, and an increase of cost of the thermal-type flowmeter compared to the related art, and can add a function of an electrostatic scattering mechanism. The thermal-type flowmeter of the present invention includes a sub-passage into which part of a measurement target gas flowing in a main passage is taken, a flow rate detection element of a flow measurement unit which is disposed in the sub-passage, a circuit package which supports the flow rate detection element, and a substrate to which the circuit package is fixed. The flow rate detection element includes a detection surface to detect a flow rate of the measurement target gas. The detection surface is disposed to face the circuit substrate.