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:
Jul. 12, 2011
Filed:
Sep. 20, 2010
Dominique Genoud, Olten, CH;
Peter Schilling, Siebnen, CH;
Thomas Koeppel, Oetwill am See, CH;
Matthias Scheu, Uster, CH;
Dominique Genoud, Olten, CH;
Peter Schilling, Siebnen, CH;
Thomas Koeppel, Oetwill am See, CH;
Matthias Scheu, Uster, CH;
Mettler-Toledo AG, Greifensee, CH;
Abstract
A calibration weight arrangement () for an electronic balance with a force-transmitting mechanism () has a calibration weight () adapted to be coupled to the force-transmitting mechanism. The arrangement also has a transfer mechanism and a drive source to manipulate the calibration weight in a guided movement. The drive source includes an actuator () cooperating with the transfer mechanism and at least one piezoelectric element () which drives the movement of the actuator. The piezoelectric element interacts with a drive wheel () that is centrally positioned relative to the calibration weight arrangement and drives a likewise centrally positioned shaft (). The interaction between the piezoelectric element and the drive wheel occurs during the advance movement in one direction through the repeated engagement and release of a frictional contact force.