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:
Dec. 15, 2015
Filed:
Apr. 02, 2009
Arno Willem Frederik Volker, Delft, NL;
Leon Ferdinand Gerard Geers, Valkenburg, NL;
Huibert Blokland, Noordeloos, NL;
Theodoor Peter Martijn Hunter, Barendrecht, NL;
Arno Willem Frederik Volker, Delft, NL;
Leon Ferdinand Gerard Geers, Valkenburg, NL;
Huibert Blokland, Noordeloos, NL;
Theodoor Peter Martijn Hunter, Barendrecht, NL;
Abstract
Fluid flows through a conduit. To measure flow speed the fluid is heated at a heating location in the conduit with a time-dependent heating strength. A speed of sound in fluid flowing in the conduit is measured at a plurality of sensing locations downstream from said heating location. The flow speed of the fluid is determined from a delay with which the time dependence is detected in the sound speeds measured at said sensing locations. In an embodiment a frequency of the variation of heating strength that is used to determine the flow speed is selected automatically dependent on the flow speed and/or other circumstances.