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. 01, 2017

Filed:

Sep. 24, 2015
Applicant:

Wirtgen Gmbh, Windhagen, DE;

Inventors:

Thomas Lehnert, Oberraden, DE;

Karsten Buhr, Willroth, DE;

Cyrus Barimani, Königswinter, DE;

Günter Hähn, Konigswinter, DE;

Karl Kammerer, Fluorn-Winzeln, DE;

Markus Roth, Aichhalden, DE;

Bernhard Diessner, Telfes in Stabai, AT;

Assignee:

Wirtgen GmbH, , DE;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 35/19 (2006.01); E21C 35/193 (2006.01); E21C 35/18 (2006.01);
U.S. Cl.
CPC ...
E21C 35/19 (2013.01); E21C 35/18 (2013.01); E21C 35/193 (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, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the support member comprising two first and/or two second stripping surfaces that are at an angle to one another, and the support member having a working side that comprises a bit receptacle. In order to achieve a stable and long-lived configuration for such a bit holder, provision is made according to the present invention that the first and/or second stripping surfaces diverge from the insertion projection side toward the working side.


Find Patent Forward Citations

Loading…