Convex block

Description

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

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof, the bottom view being a mirror image thereof;

FIG. 4 is an end view thereof, the opposite end being a mirror image thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front perspective view of a second embodiment of the convex block of my new design;

FIG. 7 is a front elevational view of FIG. 6;

FIG. 8 is a top plan view of FIG. 6, the bottom view being a mirror image thereof;

FIG. 9 is an end view of FIG. 6, the opposite end being a mirror image thereof;

FIG. 10 is a rear view of FIG. 6;

FIG. 11 is a perspective view of a third embodiment of the convex block of my new design;

FIG. 12 is a front view of FIG. 11;

FIG. 13 is a top view of FIG. 11, the bottom view being a mirror image thereof;

FIG. 14 is an end view of FIG. 11, the opposite end being a mirror image thereof;

FIG. 15 is a rear view of FIG. 11;

FIG. 16 is a front perspective view of a fourth embodiment of the convex block of my new design;

FIG. 17 is a front view of FIG. 16;

FIG. 18 is a top view of FIG. 16, the bottom view being the mirror image thereof;

FIG. 19 is an end view of FIG. 16, the opposite end being a mirror image thereof; and

FIG. 20 is a rear view of FIG. 16.

Claims

The ornamental design for a convex block, as shown and described.

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Inventors:	Forsberg; Paul J. (Richfield, MN)
Assignee:	Keystone Retaining Wall Systems, Inc. (Edina, MN)
Appl. No.:	06/863,399
Filed:	May 14, 1986

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Current U.S. Class:	D25/116; D25/118
Field of Search:	;405/284,285,286,33 ;404/41,42,34 ;52/600,605 ;D25/113,114,58

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References Cited [Referenced By]

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U.S. Patent Documents

126547	May 1872	Hickcox
228052	May 1880	Frost
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	Belleveau
3036407	May 1962	Dixon
3274742	September 1966	Paul, Jr. et al.
3390502	July 1968	Carrol
3430404	March 1969	Muse
3557505	January 1971	Kaul
3936987	February 1976	Calvin
3995434	December 1976	Kato et al.
4110949	September 1978	Cambiuzzi et al.
4207718	June 1980	Schaaf et al.
4208850	June 1980	Collier
4228628	October 1980	Schlomann
4229123	October 1980	Heinzmann
4335549	June 1982	Dean
4454699	June 1984	Strobl
4496266	January 1985	Ruckstuhl
4524551	June 1985	Scheiwiller
4572699	February 1986	Rinninger

Foreign Patent Documents

	392474		Nov 1908		FR
	1385207		Feb 1975		GB

Other References

Concrete Masonry Pictorial, vol. 33, No. 3, .COPYRGT.1977, p. 5, Curved Masonry Unit at lower right. . The Besser Company brochure, "Modular Concrete Block", 1984. . The Besser Company brochure, "Paving Stone", Jun., 1984. . The Besser Company Bulletin, Feb. 1985. . The Hollow Building Tile Assoc. Handbook, p. 11, Jan. 1924..

Primary Examiner: Word; A. Hugo
Attorney, Agent or Firm: Burd, Bartz & Gutenkauf