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. 04, 2001
Filed:
Mar. 20, 2000
Rainer Batliner, Schaanwald, LT;
Steven Moseley, Feldkirch-Tisis, AT;
Edwin Schweizer, Balzers, LT;
Udo Hauptmann, Landsberg/Lech, DE;
Hilti Aktiengesellschaft, Schaan, LT;
Abstract
A rock drill including a drill stem (,), major cutting edges (,) extending substantially over a diameter of the drill stem (,) and projecting beyond the end face (,) of the drill stem, and at least one minor cutting edge (,) extending substantially in a radial direction and provided on at least one elongate cutting body (,) which projects beyond the end face (,), with the minor cutting edge (,) being located, at a contemplated rotational direction (R) of the drill (,) about the drill axis (A), in front of a corresponding major cutting edge (,) adjacent to a main discharge groove (,) for drilling dust, and with the elongate cutting body (,) having a cutting surface (,) tapering from the minor cutting edge (,) toward the end face (,) of the drill stem (,) and having at least one inclination surface (,) adjacent to the circumference of the drill stem (,) and inclined toward the circumference of the drill stem and with respect to a radial extension of the minor cutting edge (,), in a direction opposite the drill rotational direction (R).