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. 30, 2025
Filed:
Sep. 24, 2023
Applicant:
Keyence Corporation, Osaka, JP;
Inventors:
Assignee:
KEYENCE CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 1/66 (2022.01); G01F 15/18 (2006.01);
U.S. Cl.
CPC ...
G01F 1/662 (2013.01); G01F 15/185 (2013.01);
Abstract
To enable accurate measurement of a flow rate of a gas flowing in a non-metallic tube. An ultrasonic flowmeter includes a first wedge member having a first angle, a second wedge member having a second angle, and a flow rate measurement unit that measures a flow rate of a gas based on a propagation time difference of a longitudinal wave excited by a tube. The first angle and the second angle are configured such that the tube excites both a longitudinal wave and a shear wave, and a mixing ratio of the shear wave to the longitudinal wave is 10% or less.