Over-reamer drilling tool for pilot bit

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Description

FIG. 1 is a fragmentary perspective view of an over-reamer drilling tool illustrating the invention,

FIG. 2 is a side elevational view of the over-reamer drilling tool of FIG. 1, and showing a pilot bit in phantom for environmental purposes,

FIG. 3 is a top plan view of the over-reamer tool of FIG. 1, and showing a pilot bit in phantom for environmental purposes, and,

FIG. 4 is a side elevational view, as rotated 90° from the FIG. 2 view, and showing a phantom pilot bit in an exploded position for illustration purposes.

Claims

The ornamental design for an over-reamer drilling tool for pilot bit, as shown and described.

Referenced Cited
U.S. Patent Documents
4711312 December 8, 1987 Leibee et al.
4852671 August 1, 1989 Southland
5025874 June 25, 1991 Barr et al.
5400861 March 28, 1995 Sheirer
5429199 July 4, 1995 Sheirer et al.
D424579 May 9, 2000 Brady
D430578 September 5, 2000 Brady
6427782 August 6, 2002 Brady
Patent History
Patent number: D483382
Type: Grant
Filed: Mar 4, 2003
Date of Patent: Dec 9, 2003
Assignee: The William J. Brady Loving Trust (Creve Coeur, MO)
Inventor: William J. Brady (Creve Coeur, MO)
Primary Examiner: Mitchell Siegel
Attorney, Agent or Law Firm: Senniger, Powers, Leavitt & Roedel
Application Number: 29/177,071
Classifications
Current U.S. Class: Drilling, Mining, Or Soil Treatment (includes Element) (D15/21)
International Classification: 1503;