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. 11, 2012
Filed:
Dec. 20, 2007
Applicants:
Sergej Lopatin, Lörrach, DE;
Helmut Pfeiffer, Steinen, DE;
Sascha D'angelico, Rümmingen, DE;
Inventors:
Assignee:
Endress + Hauser GmbH + Co. KG, Maulburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for determining and/or monitoring at least one process variable of a medium, including: at least one mechanically oscillatable membrane, which has a plurality of natural eigenmodes; and at least one driving/receiving unit, which excites the membrane to execute mechanical oscillations and/or which receives mechanical oscillations from the membrane. The driving/receiving unit and the membrane are embodied and matched to one another in such a manner, that the membrane executes only mechanical oscillations, which correspond to modes, which lie above the fundamental mode of the membrane.