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Publication numberUSD340248 S
Publication typeGrant
Application numberUS 07/706,113
Publication dateOct 12, 1993
Filing dateMay 23, 1991
Publication number07706113, 706113, US D340248 S, US D340248S, US-S-D340248, USD340248 S, USD340248S
InventorsWilliam J. Brady
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Roof drill bit for mining
US D340248 S
Images(2)
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Claims(1)
  1. The ornamental design for a roof drill bit for mining, as shown and described.
Description

FIG. 1 is a top plan view of a roof drill bit for mining illustrating one embodiment of the invention;

FIG. 2 is a side elevational view of the roof drill bit of FIG. 1, the opposite side view therefrom being the same;

FIG. 3 is another side elevational view of the roof drill bit, as rotated 90 clockwise from the FIGS 1 and 2 position thereof, the opposite side view therefrom being the same;

FIG. 4 is a bottom view of the roof drill bit of FIG. 1;

FIG. 5 is a perspective view of the roof drill bit of FIG. 1;

FIG. 6 is a top plan view similar to FIG. 1, but showing a second embodiment of the roof drill bit for mining;

FIG. 7 is a side elevational view of the second roof drill bit embodiment shown in FIG. 6, the opposite side view therefrom being the same;

FIG. 8 is another side elevational view of the second roof drill bit embodiment, as rotated 90 clockwise from the FIGS. 6 and 7 position thereof, the opposite side view therefrom being the same;

FIG. 9 is a bottom view of the roof drill bit embodiment of FIG. 6; and,

FIG. 10 is a perspective view of the roof drill bit of FIG. 6.

The fluted shank illustrated in phantom lines in FIGS. 2, 3, 5 and 7, 8, 10 is shown for environmental purposes and is non-limiting upon the scope of the invention.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6546974Jan 25, 2002Apr 15, 2003Michael R. Mc NabbStump removal tool
US6817429Oct 3, 2002Nov 16, 2004Jimmie SollamiRoof bit carbide blade
US7228922Jun 8, 2004Jun 12, 2007Devall Donald LDrill bit
US7392866Oct 26, 2006Jul 1, 2008The William Brady Loving TrustRoof drilling system improvements
US7513319Jun 11, 2007Apr 7, 2009Devall Donald LReamer bit
Classifications
U.S. ClassificationD15/139, D15/21