Grating

- Harsco Corporation
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Description

FIG. 1 is a fragmentary perspective view of a grating showing our new design;

FIG. 2 is a fragmentary end elevational view thereof, the opposite end being identical thereto;

FIG. 3 is a fragmentary side elevational view thereof, the opposite side being identical thereto;

FIG. 4 is a fragmentary top plan view thereof;

FIG. 5 is a fragmentary bottom plan view thereof;

FIG. 6 is a fragmentary perspective view of a second embodiment of a grating showing our new design;

FIG. 7 is a fragmentary end elevational view thereof, the opposite end being identical thereto;

FIG. 8 is a fragmentary perspective view of a third embodiment of a grating showing our new design;

FIG. 9 is a fragmentary end elevational view thereof, the opposite end being identical thereto;

FIG. 10 is a fragmentary perspective view of a fourth embodiment of a grating showing our new design; and,

FIG. 11 is a fragmentary end elevational view thereof, the opposite end being identical thereto.

Referenced Cited
U.S. Patent Documents
2711231 June 1955 Sprangler
2742121 April 1956 Liskey, Jr.
3039575 June 1962 Graham
3046852 July 1962 Graham
3815550 June 1974 Becker
3995593 December 7, 1976 Bowser
4048960 September 20, 1977 Barnidge et al.
4135339 January 23, 1979 Panlitschek
4231325 November 4, 1980 Parks
4531331 July 30, 1985 Itagaki
4951992 August 28, 1990 Hockney
Patent History
Patent number: D331470
Type: Grant
Filed: Nov 16, 1990
Date of Patent: Dec 1, 1992
Assignee: Harsco Corporation (Wormleysburg, PA)
Inventors: James P. Mitchell (Chatham, NJ), Kenmore E. McCauley (Union, NJ), Gerald W. Miskovich (Flemington, NJ)
Primary Examiner: A. Hugo Word
Assistant Examiner: Doris Clark
Law Firm: Kerkam, Stowell, Kondracki & Clarke
Application Number: 7/614,742