Press worm, especially for filter presses

US4223601A · kind A · utility

Assignee

• Fried Krupp · DE

Inventors

• Manfred Knuth · Hamburg, DE
• Thorsten Homann · Hamburg, DE

Key dates

• Filing date: Oct 4, 1978
• Grant date: Sep 23, 1980
• Expiry date: Oct 4, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C48/03
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A pressing worm or screw, especially for filter presses of the type used to press liquids from solids, e.g. oils from eatable-oil-bearing seeds, is formed with an outwardly opened groove along its flight or thread which is filled with a harder metal than the flight by deposit welding.