US 7,284,933 B2 · Square embossed roof and rib plate

Abstract

Disclosed is a mine roof and rib support system generally including a square bearing plate. A through hole is positioned near a center portion of the square bearing plate. A peripheral section at least partially circumscribes the bearing plate. In between the through hole and the peripheral section is a rib member area. The rib member area may include two rib members with a convex cross-section connected by a substantially linear surface member disposed between the two rib members, two or more concave ribs with a substantially linear surface member disposed between the two rib members, or two substantially linear surfaces connected by a convex rib member. A safety edge surrounds the square bearing plate. The safety edge may be a rolled edge, a looped edge, a folded edge, or another comparable edge. Also disclosed is a method for making the mine roof and rib support system.

Claims21

Dependent claims

In a mine roof support system of the type having a bearing plate, a mine roof bolt passing through the bearing plate and one end of the roof bolt securely mounted in bore hole in the mine roof, wherein the mine roof bolt positions the bearing plate to the mine roof, the improvement comprising:

the bearing plate, comprising:
a first major surface;
an opposite second major surface;
end connecting the first and second major surfaces, the end positioned over one of the major surfaces, and spaced from the perimeter of the bearing plate;
and
a hole in center portion of the bearing plate and extending through the first and second major surfaces of the bearing plate, wherein the mine roof bolt is received through the hole;
and
at least one rib member area disposed between the hole and the perimeter and circumscribing the hole, wherein the at least one rib member area comprises:
at least one continuous rib member circumscribing the hole and a flat continuous surface area defined as a linear surface member circumscribing the rib member.

6 more elements

In a mine roof support system of the type having a bearing plate, a mine roof bolt passing through the bearing plate and having one end of the roof bolt securely mounted in bore hole in the mine roof, wherein the mine roof bolt positions the bearing plate to the mine roof, the improvement comprising:

the bearing plate comprising:
a first major surface;
an opposite second major surface;
an end connecting the first and second major surfaces, the end positioned over one of the major surfaces and spaced from the perimeter of the bearing plate to provide a safety edge formed around the perimeter of the bearing plate;
and
a hole in center portion of the bearing plate and extending through the first and second major surfaces of the bearing plate, wherein the mine roof bolt is received through the hole.

3 more elements

Dependencies are inferred from the claim text.

Square embossed roof and rib plate

Life of this patent

Square embossed roof and rib plate

Life of this patent

Abstract

Claims21