Grating

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Description

FIG. 1 is a top plan view of a grating showing my new design;

FIG. 2 is a fragmentary view on an enlarged scale of one end of the grating of FIG. 1, showing the details thereof;

FIG. 3 is an end elevation view of the grating in FIG. 2;

FIG. 4 is a fragmentary plan view like FIG. 2, depicting another form of the invention;

FIG. 5 is a fragmentary plan view like FIG. 2, depicting another form of the invention; and

FIG. 6 is a fragmentary plan view like FIG. 2, depicting another form of the invention.

Referenced Cited
U.S. Patent Documents
D205890 October 1966 Pink
D208531 September 1967 Douglass
D224703 September 1972 Kiner
2278554 April 1942 Morton
3093216 June 1963 Dunham
3127961 April 1964 Frazier
3181440 May 1965 Mullaney et al.
3220681 November 1965 Erbert
3565210 February 1971 Evans
4137682 February 6, 1979 Trumper
Other references
  • Harrington & King Perforating Co., General Catalog No. 85, C. 1967, p. 144, top panel.
Patent History
Patent number: D258465
Type: Grant
Filed: Mar 13, 1978
Date of Patent: Mar 3, 1981
Assignee: Lyon Metal Products, Incorporated (Aurora, IL)
Inventor: Robert A. Studinski (Big Rock, IL)
Primary Examiner: A. Hugo Word
Attorney: Edward U. Dithmar
Application Number: 5/886,172
Classifications
Current U.S. Class: D25/90; D25/74
International Classification: D2502;