|
PTO
Wrapper
PDF
|
|
Dossier
Espace
Google
|
|
|
|
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 |
| 2262001, |
|
|
|
| 2381415, |
|
|
|
| 2786373, |
|
|
|
| 2830795, |
|
|
|
| 2887989, |
|
|
|
| 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, |
|
|
|
| 20090321143, |
|
|
|
| 20100252330, |
|
|
|
| 20110240373, |
|
|
|
| 20140131116, |
|
|
|
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a