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:
Sep. 29, 2020
Filed:
Jul. 27, 2015
Micro Motion, Inc., Boulder, CO (US);
Matthew Joseph Rensing, Cincinnati, OH (US);
Christopher George Larsen, Cincinnatti, OH (US);
Timothy J. Cunningham, Boulder, CO (US);
Stuart J. Shelley, Cincinnati, OH (US);
Micro Motion, Inc., Boulder, CO (US);
Abstract
A method and apparatus for a flowmeter () is provided. The method comprises the steps of placing a material in a flow tube (') while exciting a vibration mode of the flow tube (′). Exciting the vibration mode of the flow tube (′) comprises the steps of periodically driving a first driver (L) with a first signal and periodically driving a second driver (R) with a second signal, wherein the second driver (R) is driven essentially in phase with the first driver (L), but wherein the first driver's (L) drive amplitude modulated signal reaches a maximum amplitude when the second driver's (R) drive modulated signal reaches a minimal amplitude, and the first driver's (L) drive amplitude modulated signal reaches a minimum amplitude when the second driver's (R) drive amplitude modulated signal reaches a maximum amplitude. The method also comprises the steps of measuring the relative phase between a first pickoff (L) and a second pickoff (R) and determining a relative phase of a right eigenvector for the flow tube (′).