Stepped hammer for shredding machines

- ESCO Corporation
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Description

FIG. 1 is a perspective view of a stepped hammer for shredding machines in accordance with the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environment; the broken lines form no part of the claimed design.

Claims

The ornamental design for a stepped hammer for shredding machines, as shown and described.

Referenced Cited
U.S. Patent Documents
1132047 March 1915 Thompson
1281829 October 1918 Plaisted
1301316 April 1919 Plaisted
RE14865 May 1920 Plaisted
1600987 September 1926 Maher
1675464 July 1928 Pryor
1721821 July 1929 Xnittel
1733637 October 1929 Williams et al.
1760097 May 1930 Williams
1791007 February 1931 Spitzer
1807197 May 1931 Clement
1827986 October 1931 Iglehart
1850244 March 1932 Shelton
1889129 November 1932 Nielsen
1909623 May 1933 McDowell
1917525 July 1933 Jensen
1954175 April 1934 Jansen
RE19330 October 1934 Alfred
2045690 June 1936 Armstrong
2237510 April 1941 Tankersley
2331597 October 1943 Coles
2379360 June 1945 Korum
2467865 April 1949 Smith
3025067 March 1962 Raney et al.
3580518 May 1971 Strom
3844494 October 1974 Hightower
4000859 January 4, 1977 Whitney
4049202 September 20, 1977 Schmidt
4060961 December 6, 1977 Anderson et al.
4141512 February 27, 1979 Francis
4146185 March 27, 1979 Schober
4149677 April 17, 1979 Graveman et al.
4310125 January 12, 1982 Novotny
4373679 February 15, 1983 Kawano
4504019 March 12, 1985 Newell et al.
4558826 December 17, 1985 Martinek
4600160 July 15, 1986 Mengel
4662570 May 5, 1987 Heeren et al.
4973005 November 27, 1990 Haesebrouck et al.
5443216 August 22, 1995 Lajole
5598981 February 4, 1997 Hellmich
5722607 March 3, 1998 Hellmich
5975167 November 2, 1999 Brown
D426556 June 13, 2000 Bradley et al.
D428026 July 11, 2000 Bernadic et al.
6102312 August 15, 2000 Aberle
D453670 February 19, 2002 Levinson
D456425 April 30, 2002 Kim
D458619 June 11, 2002 Lee et al.
D494607 August 17, 2004 Hunag
D536351 February 6, 2007 Young
D541846 May 1, 2007 Lo
D545328 June 26, 2007 Young
D552638 October 9, 2007 Willbald
7325761 February 5, 2008 Chen et al.
D574400 August 5, 2008 Willbald
7419109 September 2, 2008 Ronfeld et al.
7621477 November 24, 2009 Young
7819352 October 26, 2010 Young
7850107 December 14, 2010 Schafer
D637633 May 10, 2011 Young et al.
D681081 April 30, 2013 Neal et al.
20090184187 July 23, 2009 Robinson
20090250538 October 8, 2009 Schmitz et al.
20100090047 April 15, 2010 Willbald
20100213301 August 26, 2010 Hoice et al.
20130233955 September 12, 2013 Morrow et al.
20140151475 June 5, 2014 Graf et al.
20140299689 October 9, 2014 Morrow et al.
Foreign Patent Documents
2003 331247 November 2002 JP
2330721 August 2008 RU
264149 May 1971 SU
893255 December 1981 SU
Patent History
Patent number: D731565
Type: Grant
Filed: Nov 14, 2013
Date of Patent: Jun 9, 2015
Assignee: ESCO Corporation (Portland, OR)
Inventors: Michael R. Weeks (Portland, OR), David M. Graf (Scappoose, OR), Christopher M. Carpenter (Tualatin, OR)
Primary Examiner: Bridget L Eland
Application Number: 29/472,639
Classifications
Current U.S. Class: Deforming Or Crushing (includes Element) (5) (D15/123)