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:
Sep. 18, 2012
Filed:
Oct. 16, 2008
Applicants:
Ulrich Krämer, Wolfach, DE;
Markus Roth, Aichhalden, DE;
Inventors:
Ulrich Krämer, Wolfach, DE;
Markus Roth, Aichhalden, DE;
Assignee:
BETEK GmbH & Co. KG, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 35/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A shank bit, in particular a road milling bit, having a carrier part () that comprises a shank (), the shank () carrying a bit tip () made of hard material, the carrier part comprising, in the region between the shank and the bit tip, a receiving portion () on which a head part is held (), and the head part comprising a circumferential chip discharge surface () tapering in a direction toward the bit tip. In order to enable a shank bit of this kind to be designed in wear-optimized fashion, the head part is held rotatably with respect to the carrier part.