FIG. 1 is a left side elevation view of a step drill bit embodying our new design;
FIG. 2 is a front elevation view thereof; and,
FIG. 3 is an enlarged top plan view thereof.
Portions of the step drill bit shown in broken lines form no part of the claimed design.
| Patent |
Priority |
Assignee |
Title |
| 10058929, |
Nov 10 2015 |
Black & Decker Inc |
Step drill bit with variable helical flute |
| 10245656, |
Jul 27 2017 |
GREENLEE TOOLS, INC |
Step bit |
| 10328500, |
Aug 03 2017 |
GREENLEE TOOLS, INC |
Cutting and deburring tool |
| 10421130, |
Dec 10 2015 |
Milwaukee Electric Tool Corporation |
Accessory tool |
| 1620536, |
|
|
|
| 213937, |
|
|
|
| 2193186, |
|
|
|
| 2276532, |
|
|
|
| 2389909, |
|
|
|
| 2555746, |
|
|
|
| 2607562, |
|
|
|
| 2786373, |
|
|
|
| 2855181, |
|
|
|
| 2897696, |
|
|
|
| 2984130, |
|
|
|
| 3076356, |
|
|
|
| 347864, |
|
|
|
| 3564945, |
|
|
|
| 3645640, |
|
|
|
| 3696875, |
|
|
|
| 3758222, |
|
|
|
| 3768581, |
|
|
|
| 3836278, |
|
|
|
| 4032251, |
May 05 1975 |
The Weldon Tool Company |
Countersinking and deburring tool |
| 4073354, |
Nov 26 1976 |
Eastman Christensen Company |
Earth-boring drill bits |
| 4098363, |
Apr 25 1977 |
Christensen, Inc. |
Diamond drilling bit for soft and medium hard formations |
| 4116578, |
Feb 11 1977 |
|
Rotary tool for making holes |
| 4127355, |
Sep 06 1977 |
COBRA WIRE LEADER CORPORATION |
Wood bit |
| 4189266, |
Aug 01 1975 |
|
Rotary drill bit for hand-held power drills |
| 4207954, |
Mar 31 1977 |
Compagnie Francaise des Petroles |
Core bit having axial conical core breaker |
| 4244432, |
Jul 12 1976 |
BAKER HUGHES OILFIELD OPERATIONS, INC |
Earth-boring drill bits |
| 4351401, |
Jul 12 1976 |
Eastman Christensen Company |
Earth-boring drill bits |
| 4360069, |
Jul 21 1980 |
KENNETH DAVIS, MIDLAND, MIDLAND, TEXAS, P O BOX 371, MIDLAND, TEXAS, 79702,; ANGUS CHEMICAL COMPANY, |
Diamond drill bits |
| 4561812, |
Oct 12 1981 |
|
Extensible drill |
| 4582458, |
Aug 09 1984 |
AMERICAN SAW & MFG COMPANY |
Stepped drill construction |
| 4662803, |
Oct 18 1979 |
Rockwell International Corporation |
Reamer with unequally spaced flutes |
| 4815902, |
Jul 01 1987 |
Irwin Industrial Tool Company |
Stepped fluted drill |
| 4932815, |
Feb 24 1988 |
H. Willy Krauss GmbH & Co. |
Boring or reaming tool |
| 499098, |
|
|
|
| 5174692, |
Oct 22 1990 |
European Aeronautic Defence and Space Company Eads France; Airbus France |
Drilling tool and apparatus with improved swarf removal |
| 5273380, |
Jul 31 1992 |
|
Drill bit point |
| 5288183, |
Aug 18 1986 |
Black & Decker Inc. |
Self-centering drill bit with pilot tip |
| 5326196, |
Jun 21 1993 |
|
Pilot drill bit |
| 5427477, |
May 14 1993 |
NEC Tokin Corporation |
Tool for calibrating and deburring pipe ends |
| 5452971, |
Mar 08 1994 |
|
Rotary end cutting tool |
| 5466100, |
Oct 24 1994 |
Alfa Manufacturing Industries, Inc. |
Multi-stepped power drill bit having handle chuck adaptor |
| 550190, |
|
|
|
| 5622462, |
Apr 11 1995 |
Credo Technology Corporation |
Twist drill bit |
| 5807039, |
Feb 13 1997 |
Credo Technology Corporation |
Drill bit |
| 5915893, |
Jun 05 1996 |
Kabushiki Kaisha Miyanaga |
Multistage bit and stopper |
| 6021857, |
Sep 21 1996 |
Black & Decker Inc |
Drill bit |
| 6190097, |
May 29 1997 |
Black & Decker Inc. |
Self-centering drill bit with pilot tip, and process |
| 6290438, |
Feb 19 1998 |
AUGUST BECK GMBH & CO |
Reaming tool and process for its production |
| 6428250, |
Feb 02 2000 |
INTERNATIONAL TOOL MACHINES OF FLORIDA, INC |
Drill bit for wood drilling |
| 6796759, |
Jan 12 2001 |
Abeo, LLC |
Self-polishing and tapping rivet assembly |
| 6890133, |
Oct 18 2002 |
Black & Decker Inc |
Stepped drill bit having split tip |
| 716557, |
|
|
|
| 7171871, |
Apr 25 2003 |
COMBINED PRODUCTS CO #1, INC |
Damaged bolt and screw removing devices |
| 7357606, |
Feb 03 2006 |
United States of America as represented by the Administrator of the National Aeronautics and Space Administration |
Self-advancing step-tap tool |
| 7455485, |
Aug 31 2005 |
Credo Technology Corporation; Robert Bosch GmbH |
Cutout bit for use with rotary tool |
| 7458646, |
Oct 06 2006 |
KENNAMETAL INC |
Rotatable cutting tool and cutting tool body |
| 7871224, |
Sep 26 2007 |
Credo Technology Corporation; Robert Bosch GmbH |
Drill bit and reamer |
| 8029215, |
Jan 05 2007 |
GREENLEE TOOLS, INC |
Spiral drill bit and method of forming same |
| 8070397, |
Feb 19 2008 |
Black & Decker Inc |
Self feed bit |
| 8070398, |
Feb 19 2008 |
Black & Decker Inc |
Multi-blade self feed bit |
| 8215206, |
Apr 25 2003 |
COMBINED PRODUCTS CO #1 INC |
Damaged bolt and screw removing devices |
| 8388280, |
Oct 04 2007 |
ISON, ORLO |
Step drill bit |
| 8622666, |
Aug 11 2009 |
COMBINED PRODUCTS CO #1 INC |
Adjustable step drill bit |
| 8764355, |
Feb 15 2011 |
Irwin Industrial Tool Company |
Step drill bit |
| 8784017, |
Sep 09 2010 |
Robert Bosch Tool Corporation; Robert Bosch GmbH |
Drill bit |
| 938484, |
|
|
|
| 9676041, |
Jul 18 2012 |
Milwaukee Electric Tool Corporation |
Power tool accessory |
| 9687915, |
Jun 14 2013 |
Black & Decker Inc |
Step drill |
| 9731358, |
Jun 06 2013 |
Milwaukee Electric Tool Corporation |
Step drill bit |
| 20010010784, |
|
|
|
| 20030202853, |
|
|
|
| 20040062619, |
|
|
|
| 20040076483, |
|
|
|
| 20040129125, |
|
|
|
| 20040265082, |
|
|
|
| 20060085005, |
|
|
|
| 20060093448, |
|
|
|
| 20060150780, |
|
|
|
| 20070020057, |
|
|
|
| 20070264094, |
|
|
|
| 20080029311, |
|
|
|
| 20080085488, |
|
|
|
| 20080166195, |
|
|
|
| 20080166196, |
|
|
|
| 20100054881, |
|
|
|
| 20100092259, |
|
|
|
| 20100254779, |
|
|
|
| 20100260567, |
|
|
|
| 20110038679, |
|
|
|
| 20110091297, |
|
|
|
| 20110116884, |
|
|
|
| 20110268517, |
|
|
|
| 20120082523, |
|
|
|
| 20120195704, |
|
|
|
| 20120207557, |
|
|
|
| 20140023445, |
|
|
|
| 20140363244, |
|
|
|
| 20140369776, |
|
|
|
| 20170129022, |
|
|
|
| CN101288912, |
|
|
|
| CN1891383, |
|
|
|
| CN201012402, |
|
|
|
| CN201012404, |
|
|
|
| CN201020559, |
|
|
|
| CN201151004, |
|
|
|
| CN201565643, |
|
|
|
| CN201579463, |
|
|
|
| CN2623387, |
|
|
|
| CN2820394, |
|
|
|
| CN2822839, |
|
|
|
| 178899, |
|
|
|
| D449627, |
Oct 01 1999 |
Kabushiki Kaisha Shinei Selsakusho; Yasuda Bussan Kabushiki Kaisha |
Cutter |
| D526670, |
Apr 13 2005 |
|
Step drill bit with stop |
| D872783, |
Apr 27 2018 |
Milwaukee Electric Tool Corporation |
Step drill bit |
| D881241, |
Apr 27 2018 |
Milwaukee Electric Tool Corporation |
Step drill bit |
| D892183, |
Apr 27 2018 |
Milwaukee Electric Tool Corporation |
Step drill bit |
| DE1041324, |
|
|
|
| DE19526686, |
|
|
|
| DE19903276, |
|
|
|
| DE19950390, |
|
|
|
| DE20015550, |
|
|
|
| DE202008000368, |
|
|
|
| DE202010006336, |
|
|
|
| DE202014010622, |
|
|
|
| DE20303656, |
|
|
|
| DE20318529, |
|
|
|
| DE246060, |
|
|
|
| DE29703475, |
|
|
|
| DE29904042, |
|
|
|
| EP482982, |
|
|
|
| EP811449, |
|
|
|
| EP1340573, |
|
|
|
| EP1924381, |
|
|
|
| EP2799171, |
|
|
|
| GB2050214, |
|
|
|
| GB2405820, |
|
|
|
| GB2419555, |
|
|
|
| GB540073, |
|
|
|
| JP11239907, |
|
|
|
| JP2006082420, |
|
|
|
| JP2007007831, |
|
|
|
| JP2007203396, |
|
|
|
| JP2014054680, |
|
|
|
| JP63016912, |
|
|
|
| JP7156007, |
|
|
|
| JP9103905, |
|
|
|
| JP9212008, |
|
|
|
| JP9285907, |
|
|
|
| JP9323209, |
|
|
|
| WO1983001215, |
|
|
|
| WO2001010587, |
|
|
|
| WO2004082874, |
|
|
|
| WO2008092386, |
|
|
|
| WO2014197761, |
|
|
|