| US 7,513,139 B2 | ||
| Electronic balance having a calibration weight arrangement | ||
| Dominique Genoud, Uster (Switzerland); and Christoph Latzer, Pfäffikon (Switzerland) | ||
| Assigned to Mettler-Toledo AG, Greifensee (Switzerland) | ||
| Filed on Dec. 06, 2005, as Appl. No. 11/164,799. | ||
| Claims priority of application No. 04106971 (EP), filed on Dec. 23, 2004. | ||
| Prior Publication US 2006/0196703 A1, Sep. 07, 2006 | ||
| Int. Cl. G01G 23/01 (2006.01) | ||
| U.S. Cl. 73—1.13 [177/50] | 20 Claims |
| 1. A calibration weight arrangement for an electronic balance having a force-transmitting device, the calibration weight arrangement
comprising:
a calibration weight;
a knee joint linkage, positioned below the calibration weight, with a central pivot point for selectively decoupling the calibration
weight from the force-transmitting device in an straightened position and coupling the calibration weight thereto in a buckled
position;
a resetting element arranged to urge the knee joint linkage into the decoupled, straightened position; and
a drive source, selectively acting on the central pivot point to urge the knee joint linkage to the buckled position.
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