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:
Apr. 11, 2017
Filed:
May. 13, 2015
Sturda, Inc., Azilda Ontario, CA;
Heintzmann Corporation, Cedar Bluff, VA (US);
John J. Breedlove, Cedar Bluff, VA (US);
Erik Denver, Keen Mountain, VA (US);
Tyler Proffitt, Pounding Mill, VA (US);
Robert Lamond, Azilda Ontario, CA;
Sturda, Inc, Azilda Ontario, CA;
Heintzmann Corporation, Cedar Bluff, VA (US);
Abstract
A retainment wall for underground horizontally extending mine shafts wherein a spaced vertical series of horizontal support ribs are secured to one or more upright supports that are secured in the mine shaft between the side walls thereof. Porous material covers and is secured to the forward retaining face of the wall structure. If the retainment wall structure is to be used as a fill retainment barrier the porous material is spray coated with a settable sealant which covers the forward face of the wall structure and the perimeter thereof to seal off the mine shaft.