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Patent
   D823908
Priority
May 29 2015
Filed
Nov 24 2015
Issued
Jul 24 2018
Expiry
Jul 24 2033
Inventors
Osterholm,…
Assg.orig
ATLAS COPC…
Assg.curr
EPIROC DRI…
Entity
unknown
Referenced by
8
References
22
Maint.:
n/a
The ornamental design for a rock drill bit, as shown and described.

FIG. 1 is top perspective view of a rock drill bit, showing my new design.

FIG. 2 is a bottom perspective view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a left side elevational view thereof.

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof.

The evenly-broken dash-dash lines in the views depict environmental features only and form no part of the claimed design. The broken dot-dash lines in the views define the peripheral boundaries of the claimed design and are not part of the claimed design.
INVENTORS:

Osterholm, Thomas

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D861051, Mar 13 2018 ROBIT OYJ Drill bit
D870168, Mar 13 2018 ROBIT OYJ Drill bit
D875147, May 10 2018 SEED TECHNOLOGIES CORP., LTD. Drill bit
D882792, Jan 31 2018 Beijing SMTP Technology Co., Ltd. Ultrasonic cutter head with slotting umbrella
D892868, Aug 17 2017 Downhole Products Limited Tubing shoe
D894979, Mar 01 2019 Boart Longyear Company Drill bit
D894980, Mar 01 2019 Boart Longyear Company Drill bit
D894981, Mar 01 2019 Boart Longyear Company Drill bit
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3918538,
4817852, Oct 08 1987 T. H. Industries Method of replacing drill bit heads
4862976, Nov 22 1988 Sandvik Rock Tools, Inc. Spline drive for percussion drilling tool
4919221, Apr 06 1989 Numa Tool Company Impact drill bit assembly and replaceable parts thereof
5890551, Mar 14 1996 Sandvik Intellectual Property Aktiebolag Rock drilling tool including a drill bit having a recess in a front surface thereof
6039127, Mar 13 1998 LOUDON ENTERPRISES, INC Rock drill
6799648, Aug 27 2002 Applied Process, Inc. Method of producing downhole drill bits with integral carbide studs
7117939, Nov 20 2002 TerraRoc Finland Oy Percussion hammer bit retainer apparatus
7281594, Nov 17 2004 Sandvik Intellectual Property AB Rock drill bit
7290626, Nov 13 2001 SANDVIK RC TOOLS AUSTRALIA PTY LIMITED Transmission sleeve
7296641, Sep 21 2004 Sandvik Intellectual Property AB Rock drill bit having outer and inner rock-crushing buttons
20020153174,
20040040752,
20060060389,
20060162965,
20070137900,
D454143, Mar 29 2000 Sandvik Intellectual Property Aktiebolag Drill bit
D496948, Jun 12 2003 Square drill bit
D611512, Feb 26 2008 Sandvik Intellectual Property AB Drill bit
D611970, Feb 26 2008 Sandvik Intellectual Property AB Rock drill bit
D705827, Sep 07 2012 Sandvik Intellectual Property AB Drill bit for percussive drilling
D725164, Jul 25 2013 Padley & Venables Limited Percussive drill bit
ASSIGNMENT RECORDS    Assignment records on the USPTO
///
Executed onAssignorAssigneeConveyanceFrameReelDoc
Nov 24 2015ATLAS COPCO SECOROC AB(assignment on the face of the patent)
Dec 02 2015OSTERHOLM, THOMASATLAS COPCO SECOROC ABASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0375920870 pdf
Nov 29 2017ATLAS COPCO SECOROC ABEPIROC DRILLING TOOLS AKTIEBOLAGCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0454050345 pdf
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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