Mine roof support plate

Description

FIG. 1 is a perspective view of a mine roof support plate showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view relative to FIG. 2.

FIG. 5 is a front view relative to FIG. 2;

FIG. 6 is a cross-sectional view taken in the direction of the arrows on line 6--6 of FIG. 2;

FIG. 7 is a cross-sectional view taken in the direction of the arrows on line 7--7 of FIG. 2;

The left side view is identical to the right side view, and the rear view is identical to the front view.

Claims

The ornamental design for a mine roof support plate, substantially as shown and described.

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Inventors:	Cassidy; Bruce A. (Richmond, OH), Gray; James O. (Rayland, OH)
Appl. No.:	06/805,102
Filed:	November 13, 1985

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Current U.S. Class:	D8/399; D8/353
Field of Search:	;D8/350,353,399 ;405/259,261 ;411/531 ;52/512,690

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References Cited [Referenced By]

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U.S. Patent Documents

D236428	August 1975	Stewart et al.
2854824	October 1958	Curry et al.
4095431	June 1978	Hannan
4112693	September 1978	Collin et al.
4371293	February 1983	Wilcox et al.
4476660	October 1984	Francovitch
4518282	May 1985	Wilcox et al.

Other References

Brochure entitled: "Keeping the Roof Over Your Head", published by Keystone Bolt Company, Copyright 1979. . Brochure entitled: "Tazewell Underground Roof Control Products and Services", published by Tazewell Industries (undated)..

Primary Examiner: Bullock; B. J.
Attorney, Agent or Firm: Fleit, Jacobson, Cohn & Price