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Patent
D631069
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Priority
Jul 16 2010
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Filed
Jul 16 2010
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Issued
Jan 18 2011
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Expiry
Jan 18 2025
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Assg.orig
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Entity
unknown
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4
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14
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n/a
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The ornamental design for a directional boring bit, as shown and described.
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FIG. 1 is a front top left perspective view of a directional boring bit;
FIG. 2 is a back top left perspective view thereof;
FIG. 3 is a front bottom left perspective view thereof;
FIG. 4 is a back bottom left perspective view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a front view thereof;
FIG. 8 is a rear view thereof;
FIG. 9 is a top plan view thereof; and,
FIG. 10 is a bottom plan view thereof.
Ford, Douglas R., Hoffman, III, Ben Edward
| Patent |
Priority |
Assignee |
Title |
| 2380112, |
|
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|
| 4187626, |
Feb 27 1978 |
ESCO Corporation |
Excavating tool having hard-facing elements |
| 4763736, |
Jul 08 1987 |
VAREL INTERNATIONAL IND , L P |
Asymmetrical rotary cone bit |
| 4832143, |
May 06 1987 |
CLEDISC INTERNATIONAL B V , JOHANNES VERMEERSTRAAT 18, 1071 DR AMSTERDAM, HOLLAND |
Rotary drilling device |
| 4848486, |
Jun 19 1987 |
WATER DEVELOPMENT TECHNOLOGIES, INC |
Method and apparatus for transversely boring the earthen formation surrounding a well to increase the yield thereof |
| 5628585, |
Apr 28 1995 |
EPI ENVIRONMENTAL TECHNOLOGIES INC |
Method and apparatus for removal of utility line and replacement with polyolefin pipe |
| 5647448, |
Jan 11 1996 |
|
Drill bit having a plurality of teeth |
| 5924500, |
May 21 1996 |
Tracto-Technik Paul Schmidt Spezialmaschinen |
Steerable boring machine |
| 6167975, |
Apr 01 1999 |
ULTERRA DRILLING TECHNOLOGIES, LP FKA ROCKBIT INTERNATIONAL LP, SUCCESSOR BY MERGER TO PDC GEARHART INTERNATIONA, INC |
One cone rotary drill bit featuring enhanced grooves |
| 6247544, |
Mar 06 1997 |
Vermeer Manufacturing Company |
Duckbill with cutting teeth |
| 6308789, |
Oct 26 1999 |
|
Drill bit for directional drilling |
| 6321858, |
Jan 28 2000 |
THE CHARLES MACHINE WORKS, INC |
Bit for directional drilling |
| 6634444, |
Jan 30 2002 |
Sandvik Intellectual Property Aktiebolag |
Drill bit for trenchless drilling |
| D606569, |
Jul 07 2009 |
|
Directional boring bit |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a