Earth grader

Description

FIG. 1 is a perspective view of an earth grader of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged perspective view of a tooth of the earth grader of FIG. 1, shown separately for ease of illustration;

FIG. 9 is a front plan view of the tooth of FIG. 8;

FIG. 10 is a rear plan view of the tooth of FIG. 8;

FIG. 11 is a side elevational view of the tooth of FIG. 8, the opposite side being a mirror image thereof;

FIG. 12 is a top plan view thereof;

FIG. 13 is a bottom plan view thereof;

FIG. 14 is a perspective view showing a second embodiment of the earth grader, as shown in FIG. 1;

FIG. 15 is a top plan view of the earth grader of FIG. 14;

FIG. 16 is a front elevational view of the earth grader of FIG. 14;

FIG. 17 is a left side elevational view of the earth grader of FIG. 14;

FIG. 18 is a right side elevational view of the earth grader of FIG. 14;

FIG. 19 is a rear elevational view of the earth grader of FIG. 14; and,

FIG. 20 is a bottom plan view of the earth grader of FIG. 14.

Referenced Cited
U.S. Patent Documents
D258592 March 17, 1981 Staley
563760 July 1896 Folsom
1176591 March 1916 Monroe
1247416 November 1917 Leak
1585044 May 1926 Patton
1727181 September 1929 Skinner
2817203 December 1957 Sievers et al.
2983060 May 1961 Rosselot
2994142 August 1961 Newell et al.
3122209 February 1964 Crites
3556228 January 1971 Mork
3705630 December 1972 Vissers
4196778 April 8, 1980 Smith
4320988 March 23, 1982 Seal
4386662 June 7, 1983 Kalif
4412589 November 1, 1983 Francis
4418759 December 6, 1983 Mork
4436040 March 13, 1984 Chumley
4448258 May 15, 1984 Mork
4585075 April 29, 1986 Mork
4655297 April 7, 1987 Bourgeois, Jr.
5024280 June 18, 1991 Mork
5265975 November 30, 1993 Scott
Foreign Patent Documents
2147183 May 1985 GBX
Other references
  • E-Z Implements Inc. brochure, May, 1991.
Patent History
Patent number: D358401
Type: Grant
Filed: Nov 9, 1993
Date of Patent: May 16, 1995
Inventor: Charles E. Devaney (Jordan, MN)
Primary Examiner: Theodore M. Shooman
Assistant Examiner: Sandra Morris
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 0/15,181