Non-rotating drill bit for a down-the-hole drill hammer

- Center Rock Inc.
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Description

FIG. 1 is a perspective view of a drill bit in accordance with the new design;

FIG. 2 is a bottom view of the drill bit of FIG. 1;

FIG. 3 is a back side elevation view of the drill bit of FIG. 1;

FIG. 4 is a front side elevation view of the drill bit of FIG. 1;

FIG. 5 is a right side elevation view of the drill bit of FIG. 1; and,

FIG. 6 is a left side elevation view of the drill bit of FIG. 1.

The broken lines of FIGS. 1-6 illustrate portions of the drill bit which form no part of the claimed design.

Claims

The ornamental design for a non-rotating drill bit for a down-the-hole drill hammer, as shown and described.

Referenced Cited
U.S. Patent Documents
2262001 November 1941 Hokanson
2381415 August 1945 Williams
2786373 March 1957 Patton
2830795 April 1958 Center
2887989 May 1959 Dulaney
4116289 September 26, 1978 Feenstra
4324300 April 13, 1982 Logan
4446929 May 8, 1984 Pillow
20040076483 April 22, 2004 Singh et al.
20090184564 July 23, 2009 Brady
20090321143 December 31, 2009 Lyon
20100252330 October 7, 2010 Gilbert et al.
20110240373 October 6, 2011 Lyon et al.
20140131116 May 15, 2014 Lyon
Patent History
Patent number: D873316
Type: Grant
Filed: Nov 22, 2017
Date of Patent: Jan 21, 2020
Assignee: Center Rock Inc. (Berlin, PA)
Inventor: Leland H. Lyon (Roanoke, VA)
Primary Examiner: Patricia A Palasik
Application Number: 29/627,070
Classifications