Step drill bit

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a first side view of a step drill bit embodying the invention.

FIG. 2 is a second side view of the step drill bit of FIG. 1.

FIG. 3 is a third side view of the step drill bit of FIG. 1; and,

FIG. 4 is a fourth side view of the step drill bit of FIG. 1.

The broken lines in the drawings depict portions of the step drill bit which 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
716557 December 1902 Klingensmith
2607562 August 1952 Phipps
2897696 August 1959 Tisserant
3564945 February 1971 Lampson et al.
3645640 February 1972 Zukas
3758222 September 1973 Oakes
4127355 November 28, 1978 Oakes
4189266 February 19, 1980 Koslow
4536107 August 20, 1985 Sandy
4582458 April 15, 1986 Korb
D345495 March 29, 1994 Priddy
5427477 June 27, 1995 Weiss
5466100 November 14, 1995 Ahluwalia
D390239 February 3, 1998 Malin
5820319 October 13, 1998 Hull
D408424 April 20, 1999 Schmotzer
5915893 June 29, 1999 Miyanaga
D419575 January 25, 2000 Kouvelis
6361255 March 26, 2002 Schmotzer
D504446 April 26, 2005 Kobayashi
D525272 July 18, 2006 Duscha
D526670 August 15, 2006 Ibey
D531650 November 7, 2006 Switzer
7171871 February 6, 2007 Kozak
D559874 January 15, 2008 Kobayashi
D580462 November 11, 2008 Liao
D585919 February 3, 2009 Cantlon
D585920 February 3, 2009 Liao
D626575 November 2, 2010 Washington, III
D664167 July 24, 2012 Lampe
D678369 March 19, 2013 Santamarina
D682897 May 21, 2013 Evatt
D682899 May 21, 2013 Evatt
D687871 August 13, 2013 Liao
D709111 July 15, 2014 Liao
8764355 July 1, 2014 Durfee
D724125 March 10, 2015 Pierce
D734792 July 21, 2015 Santamarina
D737875 September 1, 2015 Santamarina
D741924 October 27, 2015 Lee
9676041 June 13, 2017 Allen
9731358 August 15, 2017 Allen
10245656 April 2, 2019 Piper
10252351 April 9, 2019 Allen
10328500 June 25, 2019 Morton
10421130 September 24, 2019 Van Essen
20010010784 August 2, 2001 Giebmanns
20040076483 April 22, 2004 Singh
20060093448 May 4, 2006 Kelsey
20070264094 November 15, 2007 Seeley
20080029311 February 7, 2008 Seeley
20080166195 July 10, 2008 Gentry
20110038679 February 17, 2011 Kozak
20120195704 August 2, 2012 White
20170129022 May 11, 2017 Durfee
Patent History
Patent number: D881241
Type: Grant
Filed: Dec 3, 2019
Date of Patent: Apr 14, 2020
Assignee: Milwaukee Electric Tool Corporation (Brookfield, WI)
Inventors: Brett A. Parendo (Milwaukee, WI), Richard Hohnl, Jr. (Racine, WI), David Hlavac (Germantown, WI), Alexander R. Greenhill (Wauwatosa, WI), Ingolfur Ludviksson (Wauwatosa, WI)
Primary Examiner: Patricia A Palasik
Application Number: 29/715,603
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)