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.
Patent No.:
Date of Patent:
Dec. 25, 2007
Filed:
Nov. 30, 2004
Uwe Tillessen, Kamen, DE;
Norbert Hesse, Bochum, DE;
Gerhard Siepenkort, Lünen, DE;
Klaus Duhnke, Bochum, DE;
Adam Klabisch, Dortmund, DE;
Uwe Tillessen, Kamen, DE;
Norbert Hesse, Bochum, DE;
Gerhard Siepenkort, Lünen, DE;
Klaus Duhnke, Bochum, DE;
Adam Klabisch, Dortmund, DE;
DBT GmbH, Lunen, DE;
Abstract
A bit holder for a ploughing bit of a coal or extraction plough includes an insert pocket open on the top side for receiving a bit shank formed on the ploughing bit. The pocket is bounded by two lateral supporting walls, a front and a rear supporting wall, whereby the rear supporting wall has an elevated section projecting over the adjoining, lateral supporting walls. The rear supporting wall forming a bit support for the ploughing bit slopes down to its outer regions. In order to allow a good support for an inserted bit and easy and fast installation of the bit the front face of the rear supporting wall is fitted on the outer regions with guiding surfaces sloping down inwards to the insert pocket as an installation aid for the ploughing bit.