Heavy duty hard rock drill tool

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Description

FIG. 1 is a side elevational view of a heavy duty hard rock drill tool illustrating the invention, the opposite side being a mirror image;

FIG. 2 is a top plan view of the drill tool;

FIG. 3 is a bottom view of the drill tool;

FIG. 4 is another side elevational view of the drill tool, as rotated 90° from the FIG. 1 view, and the opposite side of the FIG. 4 view being a mirror image thereof; and

FIG. 5 is a perspective view of the drill tool.

Claims

The ornamental design for a heavy duty hard rock drill tool, as shown.

Referenced Cited
U.S. Patent Documents
3163246 December 1964 Vagins et al.
D340248 October 12, 1993 Brady
D351174 October 4, 1994 Brady
5429199 July 4, 1995 Sheirer et al.
6044920 April 4, 2000 Massa et al.
D424579 May 9, 2000 Brady
D430578 September 5, 2000 Brady
D487753 March 23, 2004 Brady
Patent History
Patent number: D524333
Type: Grant
Filed: Apr 27, 2004
Date of Patent: Jul 4, 2006
Inventor: William J. Brady (Creve Coeur, MO)
Primary Examiner: Antoine D. Davis
Application Number: 29/204,245
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)