Metal shredder hammer

- Sivyer Steel Corporation
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Description

FIG. 1 is a perspective view of a metal shredder hammer showing our new design;

FIG. 2 is a front elevational view thereof; the back being a mirror image thereof;

FIG. 3 is a right side elevational view thereof; the left side being a mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
1459568 June 1923 Blum
2015581 September 1935 Armour
3278126 October 1966 Ratkowski
3627212 December 1971 Stanton
3727848 April 1973 Francis
3844494 October 1974 Hightower
3987971 October 26, 1976 McClure
4000859 January 4, 1977 Whitney
4056232 November 1, 1977 Linnerz et al.
4141512 February 27, 1979 Francis
4202504 May 13, 1980 Cameron
4222530 September 16, 1980 Whitney
4313575 February 2, 1982 Stepanek
4519551 May 28, 1985 Ceurvorst
4558826 December 17, 1985 Martinek
4613088 September 23, 1986 Hausler et al.
4650129 March 17, 1987 Newell et al.
4915310 April 10, 1990 Stelk
5022593 June 11, 1991 Stelk
5072888 December 17, 1991 Stelk
5141167 August 25, 1992 Stelk
5169077 December 8, 1992 Stelk
5205667 April 27, 1993 Montgomery, Sr.
5598981 February 4, 1997 Hellmich
Foreign Patent Documents
2131722A June 1984 GBX
Patent History
Patent number: D426556
Type: Grant
Filed: Dec 8, 1997
Date of Patent: Jun 13, 2000
Assignee: Sivyer Steel Corporation (Bettendorf, IA)
Inventors: Maurice R. Bradley (East Moline, IL), John C. Stelk (Davenport, IA)
Primary Examiner: Philip S. Hyder
Law Firm: Foley & Lardner
Application Number: 0/80,406
Classifications
Current U.S. Class: Deforming Or Crushing (includes Element) (5) (D15/123); Striking Member Pivoted To Rotor (241/194)
International Classification: 1509;