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:
Jun. 14, 2011
Filed:
Jul. 17, 2009
Applicants:
George W. Keilman, Bothell, WA (US);
Peter Leigh Bartlett, Bothell, WA (US);
Timothy Johnson, Bothell, WA (US);
Inventors:
George W. Keilman, Bothell, WA (US);
Peter Leigh Bartlett, Bothell, WA (US);
Timothy Johnson, Bothell, WA (US);
Assignee:
Pacesetter, Inc., Sylmar, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A flow measurement system and method uses enhanced phase detection based on a ratio of amplitudes of summations of two oppositely propagating acoustic signals. A need for direct time measurement and extensive difference calculation is consequently avoided so that in some implementations compact, simple, low power analog circuitry can be used.