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:
Aug. 01, 2017
Filed:
Apr. 12, 2013
Eric Donzier, Bercheres sur Vesgre, FR;
Eric Donzier, Bercheres sur Vesgre, FR;
OPENFIELD, Versailles, FR;
Abstract
A density and viscosity sensor for measuring density and viscosity of a fluid, comprises: The membrane () has a thickness enabling transfer of mechanical vibration between the actuating/detecting element () and the resonating element (). One side () of the piezoelectric element () comprises a single conductive area (). Another side () of the piezoelectric element () comprises at least two conductive areas (A,B,C,D,E,F,G,H) isolated from each other, each conductive area (A,B,C,D,E,F,G,H) being coupled to an electrical potential (V, V) of opposite sign relatively to adjacent areas such that the resonating element () is driven to vibrate in a selected plane (P, P) perpendicular to the membrane ().