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:
Oct. 14, 1986
Filed:
Apr. 15, 1985
James O Moore, Worcester, PA (US);
Moore Products Company, Spring House, PA (US);
Abstract
An acoustic flow meter in which a plurality of different frequencies are transmitted in both upstream and downstream directions, and corresponding differences in transmission phase-delays due to such frequency changes detected and used to compute the fluid velocity by the formula ##EQU1## when L is the distance between transmitter and receiver, M.sub.D is the slope of the graph of phase delay vs. transmitted frequency for the upstream direction of transmission, and M.sub.u is the corresponding slope for the downstream direction. A signal processor using a least-squares algorithm is preferably employed to obtain best values for M.sub.D and M.sub.u from the several values of phase-delay difference produced by the several different transmitted frequencies.