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, 2009
Filed:
Aug. 07, 2006
Dominique Genoud, Uster, CH;
Thomas Köppel, Oetwil am See, CH;
Jean-christophe Emery, Zürich, CH;
Mettler-Toledo AG, Greifensee, CH;
Abstract
The calibration weight arrangement for an electronic balance () with a force-measuring cell () has a calibration weight () which can be coupled to the force-measuring cell (). A transfer mechanism and a drive source are used to move the calibration weight vertically, in order to establish, as well as to release, the force-transmitting contact between the calibration weight and the force-measuring cell. The transfer mechanism has at least one resetting element (), a lifting system () configured as a knee-joint linkage (), and a multi-stable positioning element (). Due to the feedback from the multi-stable positioning element, whose first stable state defines the calibrating position () and whose second stable state defines the rest position () of the transfer mechanism, the actuator () is energized only during the phases when the transfer mechanism is moving.