Wall block

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Description

FIG. 1 is a perspective view of a first embodiment of the wall block of my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a sectional view taken along the line 6--6 of FIG. 2;

FIG. 7 is a sectional view taken along the line 7--7 of FIG. 3;

FIG. 8 is a perspective view of a second embodiment of the wall block of my new design;

FIG. 9 is a top view of FIG. 8;

FIG. 10 is a bottom view of FIG. 8;

FIG. 11 is a front view of FIG. 8;

FIG. 12 is a rear view of FIG. 8;

FIG. 13 is a sectional view taken along the line 13--13 of FIG. 9;

FIG. 14 is a sectional view taken along the line 14--14 of FIG. 10;

FIG. 15 is a third embodiment of the wall block of my new design;

FIG. 16 is a top view of FIG. 15;

FIG. 17 is a bottom view of FIG. 15;

FIG. 18 is a front view of FIG. 15;

FIG. 19 is a rear view of FIG. 15;

FIG. 20 is a sectional view taken along the line 20--20 of FIG. 16;

FIG. 21 is a sectional view taken along the line 21--21 of FIG. 17;

FIG. 22 is a fourth embodiment of the wall block of my new design;

FIG. 23 is a top view of FIG. 22;

FIG. 24 is a bottom view of FIG. 22;

FIG. 25 is a front elevational view of FIG. 23;

FIG. 26 is a rear view of FIG. 22;

FIG. 27 is a sectional view taken along the line 27--27 of FIG. 23;

FIG. 28 is a sectional view taken along the line 28--28 of FIG. 24;

FIG. 29 is a fifth embodiment of the wall block of my new design;

FIG. 30 is a top view of FIG. 29;

FIG. 31 is a bottom view of FIG. 29;

FIG. 32 is a front view of FIG. 29;

FIG. 33 is a rear view of FIG. 29;

FIG. 34 is a sectional view taken along the line 34--34 of FIG. 30;

FIG. 35 is a sectional view taken along the line 35--35 of FIG. 31;

FIG. 36 is a sixth embodiment of the wall block of my new design;

FIG. 37 is a top view of FIG. 36;

FIG. 38 is a bottom view of FIG. 36;

FIG. 39 is a front view of FIG. 36;

FIG. 40 is a rear view of FIG. 36;

FIG. 41 is a sectional view taken along the line 41--41 of FIG. 37; and

FIG. 42 is a sectional view taken along the line 42--42 of FIG. 38.

Referenced Cited
U.S. Patent Documents
126547 May 1872 Hickcox
228052 May 1880 Frost
D237704 November 1974 Lane
566924 September 1896 Morrin
810748 January 1906 Haller et al.
1092621 April 1914 Worner
1414444 May 1922 Straight
1456498 May 1923 Binns
2235646 March 1941 Schaffer
2963828 December 1960 Belliveau
3036407 May 1962 Dixon
3274742 September 1966 Paul, Jr. et al.
3390502 July 1968 Carroll
3430404 March 1969 Muse
3557505 March 1969 Muse
3936987 February 10, 1976 Kaul
3995434 December 7, 1976 Kato et al.
4016693 April 12, 1977 Warren
4110948 September 5, 1978 Cambiuzzi et al.
4207718 June 17, 1980 Schaaf et al.
4208850 June 24, 1980 Collier
4228628 October 21, 1980 Schlomann
4229123 October 21, 1980 Heinzmann
4335549 June 22, 1982 Dean
4454699 June 19, 1984 Strobl
4524551 June 25, 1985 Scheiwiller
4572699 February 25, 1986 Rinninger
Foreign Patent Documents
392474 November 1908 FRX
1385207 February 1975 GBX
Other references
  • The Hollow Building Tile Assoc. Handbook, p. 11, Jan., 1924. The Besser Company brochure, "Modular Concrete Block", 1984. The Besser Company brochure, "Paving Stone", Jun., 1984. The Besser Company Bulletin, Feb., 1985.
Patent History
Patent number: D296007
Type: Grant
Filed: May 27, 1986
Date of Patent: May 31, 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: 6/867,372