The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 2007
Filed:
Jun. 09, 2003
Frank Calandra, Jr., Pittsburgh, PA (US);
Jack R. Eaton, Oakmont, PA (US);
John C. Stankus, Canonsburg, PA (US);
Eugene H. Stewart, Pittsburgh, PA (US);
Demrey G. Brandon, Pittsburgh, PA (US);
Frank Calandra, Jr., Pittsburgh, PA (US);
Jack R. Eaton, Oakmont, PA (US);
John C. Stankus, Canonsburg, PA (US);
Eugene H. Stewart, Pittsburgh, PA (US);
Demrey G. Brandon, Pittsburgh, PA (US);
Jennmar Corporation, Pittsburgh, PA (US);
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.