Patent
   D873316
Priority
Oct 31 2013
Filed
Nov 22 2017
Issued
Jan 21 2020
Expiry
Jan 21 2035
Assg.orig
Entity
unknown
3
14
n/a
The ornamental design for a non-rotating drill bit for a down-the-hole drill hammer, as shown and described.

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.

Lyon, Leland H.

Patent Priority Assignee Title
D986703, Jan 28 2021 Drill guide
ER5833,
ER8854,
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4116289, Sep 23 1977 Shell Oil Company Rotary bit with ridges
4324300, Jun 30 1980 HANEY, BELL C Rotary drill bit
4446929, Jun 11 1979 Dresser Industries, Inc. Fluid operated rock drill hammer
20040076483,
20090184564,
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20110240373,
20140131116,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Nov 22 2017Center Rock Inc.(assignment on the face of the patent)
Dec 04 2019LYON, LELAND H CENTER ROCK INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0512020404 pdf
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