Balance with scale on top

US5771986A · kind A · utility

Assignee

• Sartorius AG · DE

Inventors

• Heinz-Gerhard Kohn · Dransfeld, DE
• Jörg Martens · Bovenden, DE
• Michael Laubstein · Oettingen, DE
• Carsten Tischer · Hardegsen, DE
• Winfried Graf · Göttingen, DE
• Eduard Bierich · Hann. Münden, DE

Key dates

• Filing date: Jul 18, 1995
• Grant date: Jun 30, 1998
• Expiry date: Jul 18, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G01G21/244
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A toploaded balance in accordance with the principle of the electromagnetic compensation of force with a divided upper guide rod (3, 3') and a divided lower guide rod (4, 4') which together as a parallel guide connect a load receiver (2) to a system carrier (1) fixed to the housing, which system carrier (1), load receiver (2) and guide rods (3, 3', 4, 4') form a one-piece base, with a translation lever (5) rotatably mounted by two flexible articulations (7) on the system carrier (1), with a coupling element (12) connected by flexible articulations on the one hand to the load receiver (2) and on the other hand to the short lever arm of the translation lever (5), with a magnet build, as viewed from above, into the free space between the parts of the guide rods (3, 3', 4, 4') and their extensions on the system-carrier side and with a coil fastened on the longer lever arm of the translation lever (5) and extending into the air gap of the magnet, the translation lever (5), the two flexible articulations (7) for mounting the translation lever (5) and the coupling element (12) with its flexible articulations (13, 14) are also a one-piece component of the base. In this manner errors by scr…