Title:
Retaining wall block
United States Patent D300253
Inventors:
Forsberg, Paul J. (Burnsville, MN)
Application Number:
D/202431
Publication Date:
03/14/1989
Filing Date:
06/06/1988
Export Citation:
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Assignee:
Keystone Retaining Wall Systems, Inc. (Edina, MN)
Primary Class:
D25/114
Other Classes:
D25/116
Field of Search:
405/284, 405/285, 405/286, 405/33, 404/41, 404/42, 404/34, 52/608, 52/605, D25/113, D25/114, D25/115, D25/116, D25/117, D25/118
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US Patent References:
4572699Paving stoneFebruary, 1986Rinninger
4524551Construction units for the erection of walls and method of utilizationJune, 1985Scheiwiller
4496226ANDed motor control system for motorized ophthalmic instrumentJanuary, 1985Ruckstuhl
4454699Brick fastening deviceJune, 1984Strobl
4335549Method, building structure and side-split block thereforeJune, 1982Dean, Jr.
4312606Interlocking prefabricated retaining wall systemJanuary, 1982Sarikelle
4229123Inclined retaining wall and element thereforOctober, 1980Heinzmann
4228628Building blocks and connector means thereforOctober, 1980Schlomann
4208850Connector for knock-down cabinetJune, 1980Collier
4207718Concrete block wallJune, 1980Schaaf et al.
4110949Building blockSeptember, 1978Cambiuzzi et al.
4016693Insulated masonry blockApril, 1977Warren
3995434Wave dissipating wallDecember, 1976Kato et al.
3936987Interlocking brick or building block and walls constructed therefromFebruary, 1976Calvin
D237704N/ANovember, 1975Lane
3557505N/AJanuary, 1971Kaul
3430404APERTURED WALL CONSTRUCTIONMarch, 1969Muse
3390502Brick and wall constructionJuly, 1968Carroll
3274742Refractory wall constructionSeptember, 1966Paul, Jr. et al.
3036407Building block assemblyMay, 1962Dixon
2963828Building blocks and means for assembling sameDecember, 1960Belliveau
2882689Dry wall of bricksApril, 1959Huch et al.
2235646MasonryMarch, 1941Schaffer
1456498Brick or tile for furnace constructionMay, 1923Binns
1414444Building tileMay, 1922Straight
1092621N/AApril, 1914Worner
0810748N/AJanuary, 1906Haller et al.
0566924N/ASeptember, 1896Morrin
0228052N/AMay, 1880Frost
0126547N/AMay, 1872Hickcox
Foreign References:
FR392474November, 1908
FR1360872April, 1964
CH205452June, 1939
GB336December, 1870
GB1385207February, 1975
GB2127872AApril, 1984
Other References:
The Hollow Building Tile Assoc., Handbook, p. 11, Jan. 1924.
Concrete Masonry Pictorial, vol. 33, No. 3 C, 1977, p. 35.
The Besser Company brochure, "Modular Concrete Block", 1984, pp. 18-19.
The Besser Company brochure, "Paving Stone", Jun. 1984, 2 pages.
The Besser Company Bulletin, Feb. 1985.
Primary Examiner:
Word, Hugo A.
Attorney, Agent or Firm:
Burd, Bartz & Gutenkauf
Claims:
1. The ornamental design for a retaining wall block, as shown and described.

Description:

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

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

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

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