Heavy duty roof drill bit

Description

FIG. 1 is a side elevational view of a heavy duty roof drill bit embodying the invention, the opposite side being a mirror image;

FIG. 2 is a top plan view of the heavy duty roof drill bit of FIG. 1;

FIG. 3 is a bottom view thereof;

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

FIG. 5 is a perspective view of the roof drill bit.

Claims

CLAIM The ornamental design for a heavy duty roof drill bit, as shown and described.

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Inventors:	Brady; William J. (Creve Coeur, MO)
Assignee:	The William J. Brady Loving Trust (Creve Coeur, MO)
Appl. No.:	D/222,641
Filed:	February 1, 2005

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Related U.S. Patent Documents

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	Application Number	Filing Date	Patent Number	Issue Date
	29204230	Apr 27, 2004	D516104

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Current U.S. Class:	D15/139
Current International Class:	1509
Field of Search:	;D15/139 ;175/377,388,339,393,420.1,429,430 ;299/79.1

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References Cited [Referenced By]

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U.S. Patent Documents

3163246	December 1964	Vagins et al.
5180022	January 1993	Brady
D340248	October 1993	Brady
D351174	October 1994	Brady
5429199	July 1995	Sheirer et al.
6044920	April 2000	Massa et al.
D424579	May 2000	Brady
D430578	September 2000	Brady
D514131	January 2006	Brady

Primary Examiner: Davis; Antoine D.
Assistant Examiner: Palasik; Patricia