Patent · US Active

Chisel holder for a soil treatment machine

US9739145B2 · kind B2 · utility

3Cited by

67References

15Claims

0Family size

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	Jan 27, 2016
Grant date	Aug 22, 2017
Priority date	—
Expiry date	Jan 27, 2036

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21C35/1933
WIPO fieldCivil engineering
WIPO sectorOther 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.