Bearing plate useful for supporting a mine roof

Description

FIG. 1 is a top perspective view of a bearing plate useful for supporting a mine roof showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D258218 February 10, 1981 Collin et al.
1925573 September 1933 Schurman
2854824 October 1958 Curry et al.
3090203 May 1963 Durget
3238731 March 1966 Seifert et al.
4112693 September 12, 1978 Collin et al.
Patent History
Patent number: D275452
Type: Grant
Filed: Sep 30, 1982
Date of Patent: Sep 11, 1984
Inventor: William J. Payne (Greensburg, PA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Suzanne N. Gitlin
Attorney: Jon M. Lewis
Application Number: 6/430,826
Classifications
Current U.S. Class: D/8399