Step drill bit

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Description

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.

Claims

We claim the ornamental design for a step drill bit, as shown and described.

Referenced Cited
U.S. Patent Documents
213937 April 1879 Reichardt
347864 August 1886 Berg
499098 June 1893 Comstock
550190 November 1895 Myers
716557 December 1902 Klingensmith
938484 November 1909 Hanson
1620536 March 1927 Gairing
2193186 March 1940 Bannister
2276532 March 1942 Welty
2389909 November 1945 Hofbauer
2555746 June 1951 Horsky et al.
2607562 August 1952 Phipps
D178899 October 1956 Olsen
2786373 March 1957 Patton
2855181 October 1958 Olsen
2897696 August 1959 Tisserant
2984130 May 1961 Lentz
3076356 February 1963 Simich
3564945 February 1971 Bradley
3645640 February 1972 Zukas
3696875 October 1972 Cortes
3758222 September 1973 Oakes
3768581 October 1973 Rederon
3836278 September 1974 McInnes
4032251 June 28, 1977 Ribich
4073354 February 14, 1978 Rowley et al.
4098363 July 4, 1978 Rohde et al.
4116578 September 26, 1978 Gelfand et al.
4127355 November 28, 1978 Oakes
4189266 February 19, 1980 Koslow
4207954 June 17, 1980 Jerome
4244432 January 13, 1981 Rowley et al.
4351401 September 28, 1982 Fielder
4360069 November 23, 1982 Davis
4561812 December 31, 1985 Linden
4582458 April 15, 1986 Korb
4662803 May 5, 1987 Arnold
4815902 March 28, 1989 Durfee, Jr.
4932815 June 12, 1990 Krauss
5174692 December 29, 1992 Martin
5273380 December 28, 1993 Musacchia
5288183 February 22, 1994 Chaconas et al.
5326196 July 5, 1994 Noll
5427477 June 27, 1995 Weiss
5452971 September 26, 1995 Nevills
5466100 November 14, 1995 Ahluwalia
5622462 April 22, 1997 Gakhar et al.
5807039 September 15, 1998 Booher et al.
5915893 June 29, 1999 Miyanaga
6021857 February 8, 2000 Birk
6190097 February 20, 2001 Thomas
6290438 September 18, 2001 Papajewski
D449627 October 23, 2001 Tateno et al.
6428250 August 6, 2002 Giebmanns
6796759 September 28, 2004 Aasgaard
6890133 May 10, 2005 Singh et al.
D526670 August 15, 2006 Ibey
7171871 February 6, 2007 Kozak
7357606 April 15, 2008 Pettit et al.
7455485 November 25, 2008 Boyd et al.
7458646 December 2, 2008 Marathe et al.
7871224 January 18, 2011 Dost et al.
8029215 October 4, 2011 Gentry
8070397 December 6, 2011 Durfee
8070398 December 6, 2011 Durfee
8215206 July 10, 2012 Kozak et al.
8388280 March 5, 2013 Ison
8622666 January 7, 2014 Kozak
8764355 July 1, 2014 Durfee
8784017 July 22, 2014 Ibarra
9676041 June 13, 2017 Allen
9687915 June 27, 2017 Durfee
9731358 August 15, 2017 Allen
10058929 August 28, 2018 Durfee
10245656 April 2, 2019 Piper
10328500 June 25, 2019 Morton
10421130 September 24, 2019 Essen
D872783 January 14, 2020 Parendo
D881241 April 14, 2020 Parendo
D892183 August 4, 2020 Parendo
20010010784 August 2, 2001 Giebmanns
20030202853 October 30, 2003 Ko et al.
20040062619 April 1, 2004 Ruppert
20040076483 April 22, 2004 Singh
20040129125 July 8, 2004 Colquhoun
20040265082 December 30, 2004 Abrams
20060085005 April 20, 2006 Kenealy, III et al.
20060093448 May 4, 2006 Kelsey
20060150780 July 13, 2006 Chen
20070020057 January 25, 2007 Chen
20070264094 November 15, 2007 Seeley
20080029311 February 7, 2008 Seeley
20080085488 April 10, 2008 Lazarof
20080166195 July 10, 2008 Gentry
20080166196 July 10, 2008 Zhu
20100054881 March 4, 2010 Thomas et al.
20100092259 April 15, 2010 Borschert et al.
20100254779 October 7, 2010 Wedner
20100260567 October 14, 2010 Kauper
20110038679 February 17, 2011 Kozak
20110091297 April 21, 2011 Itoh et al.
20110116884 May 19, 2011 Li
20110268517 November 3, 2011 Bomireddy et al.
20120082523 April 5, 2012 Bozkurt
20120195704 August 2, 2012 White
20120207557 August 16, 2012 Durfee
20140023445 January 23, 2014 Allen
20140363244 December 11, 2014 Allen
20140369776 December 18, 2014 Durfee
20170129022 May 11, 2017 Durfee
Foreign Patent Documents
2623387 July 2004 CN
2820394 September 2006 CN
2822839 October 2006 CN
1891383 January 2007 CN
201012402 January 2008 CN
201012404 January 2008 CN
201020559 February 2008 CN
101288912 October 2008 CN
201151004 November 2008 CN
201565643 September 2010 CN
201579463 September 2010 CN
1041324 October 1958 DE
246060 May 1987 DE
19526686 March 1996 DE
29703475 June 1997 DE
29904042 July 1999 DE
29904042 July 1999 DE
19903276 August 2000 DE
20015550 October 2000 DE
19950390 April 2001 DE
20303656 June 2003 DE
20318529 May 2005 DE
202008000368 April 2008 DE
202010006336 September 2010 DE
202014010622 February 2016 DE
0482982 April 1992 EP
0811449 December 1997 EP
1340573 July 2006 EP
1924381 July 2009 EP
2799171 November 2014 EP
540073 October 1941 GB
2050214 January 1981 GB
2405820 March 2005 GB
2419555 May 2006 GB
63016912 January 1988 JP
7156007 June 1995 JP
9103905 April 1997 JP
9212008 August 1997 JP
9285907 November 1997 JP
9323209 December 1997 JP
11239907 September 1999 JP
2006082420 March 2006 JP
2007007831 January 2007 JP
2007203396 August 2007 JP
2014054680 March 2014 JP
WO 1983/001215 April 1983 WO
WO 2001/010587 February 2001 WO
WO 2004082874 September 2004 WO
WO 2008/092386 August 2008 WO
WO 2014197761 December 2014 WO
Other references
  • United Kingdom Intellectual Property Office Search and Examination Report for Application No. GB2002306.5 dated Mar. 26, 2020 (5 pages).
  • RUKO Step Drill Catalog, pp. 59-68, publicly available at least as early as Jun. 2, 2011.
  • Bosch Step Drill Bit with Spiral Flute, publicly available at least as early as Jun. 2, 2011.
  • RUKO Tools—Step Drill Bits, vol. 13, e 33-3, publicly available at least as early as Jun. 2, 2011.
  • International Search Report and Written Opinion for Application No. PCT/US2014/041221 dated Sep. 26, 2014 (21 pages).
  • German Patent Office Action for Application No. 112014002733.2 dated Mar. 21, 2019 (16 pages including English translation).
  • European Patent Office Extended Search Report for Application No. 19171221.5 dated Aug. 23, 2019 (14 pages).
  • United Kingdom Intellectual Property Office Action for Application No. GB1518486.4 dated Nov. 7, 2019 (5 pages).
Patent History
Patent number: D936117
Type: Grant
Filed: Nov 20, 2019
Date of Patent: Nov 16, 2021
Assignee: Milwaukee Electric Tool Corporation (Brookfield, WI)
Inventors: Douglas W. Allen (Oconomowoc, WI), Courtney D. McCool (Menomonee Falls, WI), Smith C. Theiler (Plymouth, WI), Richard Hohnl, Jr. (Racine, WI)
Primary Examiner: Darlington Ly
Application Number: 29/713,951
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139); D8/70