Balance arm for flat weighing machines

US4350217A · kind A · utility

Assignee

• Bizerba-Werke Wilhelm Kraut GmbH & Co. KG · DE

Inventors

• Ernst Kuhnle · Balingen, DE
• Josef Schwarz · Augsburg, DE

Key dates

• Filing date: Oct 29, 1980
• Grant date: Sep 21, 1982
• Expiry date: Oct 29, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S177/09
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A balance arm for flat weighing machines has a rigid frame formed by girder-section rails extending between side beams. A pair of knife-edges are attached to each rail to extend parallel to the longitudinal axis thereof with the sharp edges of each pair of knife-edges in alignment. The rails are secured to the side beams such that all the sharp edges lie in a common plane. The configuration of the rails enables all the knife-edges to be precision ground on a common grinding machine after attachment to the inside of the rails and before the side beams are attached to the rails.