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. 05, 2008
Filed:
Apr. 28, 2004
Koichi Hishida, Yokohama, JP;
Michitsugu Mori, Tokyo, JP;
Hideaki Tezuka, Tokyo, JP;
Keio University, Tokyo, JP;
The Tokyo Electric Power Company, Incorporated, Tokyo, JP;
Abstract
An ultrasonic flowmeter includes: an emission trigger oscillator outputting a trigger signal; an ultrasonic oscillator generating and outputting ultrasonic pulses by the trigger signal from the emission trigger oscillator; an ultrasonic pulse receiver transmitting the ultrasonic pulses output from the ultrasonic oscillator toward a measurement line within a fluid, and receiving an ultrasonic echo signal serving as reflected waves reflected off an ultrasonic reflector suspended within the fluid; a signal processor subjecting the ultrasonic echo signal received by the ultrasonic pulse receiver to signal processing; and a signal analyzer analyzing the ultrasonic echo signal subjected to the signal processing by the signal processor, calculating the position and speed of the ultrasonic reflector positioned along the measurement line, and measuring at least one of the flow-speed distribution and flow of the fluid from the calculated results.