Balance with scale on top and parallel guide consisting of a one-piece casting and one-piece parallel guide system

US4813505A · kind A · utility

Assignee

• Sartorius AG · DE

Inventors

• Walter Sodler · Göttingen, DE
• Eberhard Lubke · Hardegsen, DE
• Otto Kuhlmann · Oettingen, DE

Key dates

• Filing date: Jan 12, 1988
• Grant date: Mar 21, 1989
• Expiry date: Jan 12, 2008

Classification

• Technology area (CPC G): Physics
• CPC primary: G01G7/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

It is disclosed for a balance with a scale on top based on the principle of the electromagnetic compensation of force with a system carrier fixed to the housing, with a load receiver, with two guide rods which connect the load receiver to the system carrier in a vertically movable direction as parallel guide, whereby the stem carrier, the two guide rods and the load receiver are designed as a one-piece casting, with a translation lever and with a coupling element between load receiver and translation lever, whereby the force from the load receiver corresponding to the mass of the weighed material is transferred via the coupling element to the shorter lever arm of the translation lever and the coil of the electromagnetic compensation of force is fastened to the longer lever arm of the translation lever that the system carrier comprise lateral projections which extend into the area between the guide rod arms. This achieves a distinct reinforcement of the system carrier without having to increase the outer dimensions of the system. The stability of the entire system can be further increased by means of further reinforcement measures in the lad receiver and in the guide rod arms.