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:
Apr. 02, 1996
Filed:
Apr. 25, 1994
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
An ultrasonic fluid vibrating type flowmeter comprising a set of ultrasonic transmitter and ultrasonic receiver mounted on a pipe carrying the fluid whose flow rate is to be measured; driving device for intermittently driving the transmitter using burst waves containing an oscillation frequency to cause the transmitter to apply ultrasonic signals to the fluid and cause its vibration; standard timing device for generating a standard signal to control the timing of the burst waves whereby the receiver receives an amplitude modulated signal whose amplitude is modulated by the frequency modulation caused by vibration of the fluid; and sampling device for sampling an envelope of the amplitude modulated signal in synchronism with the standard signal and at times governed by a predetermined function, whereby the vibration frequency of the fluid is detected from the sampled amplitude modulated envelope while concurrently removing noise influences.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile