Retaining wall block

Description

FIG. 1 is a top front perspective view of a retaining wall block of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side view of the right side thereof, the opposite side being a mirror image thereof;

FIG. 4 is a sectional view taken along the line 4--4 of FIG. 3;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front elevational thereof;

FIG. 7 is a rear elevational view thereof;

FIG. 8 is a sectional view taken along the line 8--8 of FIG. 2;

FIG. 9 is a top front perspective view of a first modification of the retaining wall block of my new design;

FIG. 10 is a top plan view of FIG. 9;

FIG. 11 is a side view of right side of FIG. 10, the opposite side being a mirror image thereof;

FIG. 12 is a sectional view taken along the line 12--12 of FIG. 10;

FIG. 13 is a bottom view of FIG. 9;

FIG. 14 is a front elevational view of FIG. 9;

FIG. 15 is a rear elevational view of FIG. 9; and

FIG. 16 is a sectional view taken along the line 16--16 of FIG. 10.

Referenced Cited
U.S. Patent Documents
D237704 November 1975 Lane
566924 September 1896 Morrin
2882689 April 1959 Huch et al.
3995434 December 7, 1976 Kato et al.
4016693 April 12, 1977 Warren
4312606 January 26, 1982 Sarikelle
4496226 January 29, 1985 Ruckstuhl
Foreign Patent Documents
1360872 November 1964 FRX
205452 March 1939 CHX
336 1871 GBX
1385207 August 1975 GBX
2127872A July 1984 GBX
Other references
  • Concrete Masonry Pictorial, vol. 33, No. 3 C 1977, p. 35.
Patent History
Patent number: D298463
Type: Grant
Filed: Jun 8, 1987
Date of Patent: Nov 8, 1988
Assignee: Keystone Retaining Wall Systems, Inc. (Edina, MN)
Inventor: Paul J. Forsberg (Richfield, MN)
Primary Examiner: A. Hugo Word
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 7/59,481
Classifications