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. 21, 2021
Filed:
Jun. 20, 2018
Applicant:
Hilti Aktiengesellschaft, Schaan, LI;
Inventors:
Klaus-Peter Bohn, Schaan, LI;
Roland Foser, Ruggell, LI;
Markus Hartmann, Mauerstetten, DE;
Bastian Pluemacher, Schwabmuenchen, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/36 (2006.01); E21B 10/58 (2006.01); E21B 11/00 (2006.01);
U.S. Cl.
CPC ...
E21B 10/36 (2013.01); E21B 10/58 (2013.01); E21B 11/005 (2013.01);
Abstract
A drill bit for chiselling rock includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a plurality of cutting faces, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. The intake opening has a noncircular cross section.