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:
Dec. 31, 2019
Filed:
Jul. 10, 2015
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Takeshi Morino, Hitachinaka, JP;
Shinobu Tashiro, Hitachinaka, JP;
Masashi Fukaya, Tokyo, JP;
Atsushi Inoue, Hitachinaka, JP;
Masanobu Ino, Hitachinaka, JP;
Naoki Saito, Hitachinaka, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
Abstract
The present invention provides a thermal flowmeter having good measurement accuracy by reducing deviation in the flow velocity distribution of a gas under measurement flowing through an auxiliary passage. An auxiliary passagefor taking in a portion of a gas under measurement IA flowing through a main passagehas a curved passagethat bends toward a flowrate measurement element. The curved passagehas a resistance portionformed therein that applies resistance to the flow of the gas under measurement IA flowing through the outer peripheral side CO of the curved passageso that the pressure loss of the gas under measurement IA flowing through the outer peripheral side CO is high compared to that of the gas flowing through the inner peripheral side CI of the curved passage
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile