The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 22, 2017

Filed:

Jan. 27, 2016
Applicant:

Wirtgen Gmbh, Windhagen, DE;

Inventors:

Thomas Lehnert, Oberraden, DE;

Karsten Buhr, Willroth, DE;

Cyrus Barimani, Königswinter, DE;

Günter Hähn, Königswinter, DE;

Karl Kammerer, Fluorn-Winzeln, DE;

Markus Roth, Aichhalden, DE;

Bernhard Diessner, Telfes in Stubai, AT;

Assignee:

Wirtgen GmbH, , DE;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 35/19 (2006.01); E21C 35/193 (2006.01); B28D 1/18 (2006.01); E21C 35/18 (2006.01); E01C 23/088 (2006.01);
U.S. Cl.
CPC ...
E21C 35/193 (2013.01); B28D 1/188 (2013.01); E01C 23/088 (2013.01); E21C 35/18 (2013.01); E21C 35/19 (2013.01); E21C 35/1933 (2013.01); E21C 2035/191 (2013.01);
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.


Find Patent Forward Citations

Loading…