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:
Feb. 12, 2013
Filed:
May. 10, 2010
John J. Breedlove, Cedar Bluff, VA (US);
Erik Denver, Keen Mountain, VA (US);
Herbert B. Stiltner, Abingdon, VA (US);
John J. Breedlove, Cedar Bluff, VA (US);
Erik Denver, Keen Mountain, VA (US);
Herbert B. Stiltner, Abingdon, VA (US);
Heintzmann Corporation, Cedar Bluff, VA (US);
Abstract
A mine rib support for bracing a vertical mine rib disposed between a mine floor and a mine roof. The support includes an elongated upright and continuous telescopically expandable support having a preset curvature. The member is longitudinally expanded for engaging the mine floor and the mine roof under compression with the curvature facing towards the mine rib. A support plate is laterally extended from the support member into compression engagement with the mine rib, thereby prestressing the support for support of the mine rib.