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:
Mar. 25, 2025
Filed:
Nov. 14, 2019
Forschungszentrum Juelich Gmbh, Juelich, DE;
Viktor Sydoruk, Juelich, DE;
Johannes Kochs, Aachen, DE;
Dagmar van Dusschoten, EP Munstergeleen, NL;
Siegfried Jahnke, Velbert, DE;
FORSCHUNGSZENTRUM JUELICH GMBH, Juelich, DE;
Abstract
The invention relates to a method for determining the total volume and/or the true volume and the porosity of objects, wherein a gas chamber of a closed measurement chamber is compressed or expanded, this volume change ΔV in the measurement chamber causes a movement change of a membrane of a transducer, wherein the movement of this membrane of the transducer correlates linearly with the volume change ΔV in the measurement chamber, the mechanical movement of said membrane of the transducer being triggered by at least one frequency, as a function of the volume of an object in a measurement chamber, and the movement change of the membrane being measured by a sensor head. The invention also relates to a device suitable for the method.