Electronic balance with scale on top and corner-load adjustment

US4798251A · kind A · utility

Assignee

• Sartorius AG · DE

Inventors

• Gunther Maaz · Uslar, DE
• Eduard Bierich · Hann. Münden, DE
• Eberhard Stadler · Göttingen, DE

Key dates

• Filing date: Apr 1, 1988
• Grant date: Jan 17, 1989
• Expiry date: Apr 1, 2008

Classification

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

Abstract

The invention discloses an electronic balance with a scale on top, a balance scale, a balance scale carrier, two identical guide rods (7,8) which connect in an articulated manner the balance scale carrier and the balance scale in the form of a parallel guide to a system carrier (1/5) fixed to the housing and with at least one corner-load adjustment lever (22') which is connected to the system carrier via a thin area (24) and which carries a support point in the vicinity of this thin area (24) for the end of a guide rod (7) on the system carrier that the corner-load adjustment lever (22') is bent at right angles between the support point of the guide rod (7) and the thin area (24) to the system carrier (1,5) in such a manner that the moving joint (17) of the guide rod (7) and this thin area (24) are at the same height. As a result, even great forces in the guide rods such as those which occur at an off-center loading of the balance scale do not cause any torque on the corner-load adjustment lever and thus result in a very stable corner-load adjustment.