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:
Aug. 02, 2022
Filed:
Feb. 07, 2020
Hitachi Astemo, Ltd., Hitachinaka, JP;
Nobuaki Gorai, Hitachinaka, JP;
Takahiro Miki, Hitachinaka, JP;
Akira Uenodan, Hitachinaka, JP;
Naoki Saito, Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
To obtain a physical quantity detection device capable of reducing an intake amount of air accompanied by foreign matter. A physical quantity detection device () of the invention includes a housing arranged in a main passage through which a measurement target gas () flows. The housing is provided with a second sub-passage (B) that takes in a part of the measurement target gas () flowing in the main passage, a circuit chamber () that accommodates a pressure sensor () that detects a pressure of the measurement target gas (), and a pressure introduction passage () having one end opened in the middle of the second sub-passage (B) and the other end opened in the circuit chamber () and capable of introducing the pressure of the measurement target gas () from the second sub-passage (B) into the circuit chamber (). In the pressure introduction passage (), an introduction port () is arranged at a position offset outward from a side wall surface () of the second sub-passage (B).