Chisel holder for a soil treatment machine

US10208593B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Thomas Lehnert · Oberraden, DE
• Karsten Buhr · Willroth, DE
• Cyrus Barimani · Rübhausen, DE
• Günter Hähn · Rübhausen, DE
• Karl Kammerer · Fluorn-Winzeln, DE
• Markus Roth · Schenkenzell, DE
• Bernhard Diessner · Fulpmes, AT

Key dates

• Filing date: Jul 31, 2017
• Grant date: Feb 19, 2019
• Expiry date: Jul 31, 2037

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21C35/1933
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The invention relates to a bit holder for an earth working machine, in particular a road milling machine, that comprises a bit receptacle in the region of a working side of a support member and that indirectly or directly carries an insertion projection on an insertion projection side of the support member, the support member comprising two stripping surfaces [first or second stripping surfaces] that form a stripping surface pair and are at an angle to one another. In order to achieve a stable and long-lived configuration with such a bit holder, provision is made according to the present invention that the support member comprises at least one further stripping surface that is at an angle to the two stripping surfaces of the stripping surface pair.