Mine ventilation overcast
AssigneeModern Welding Company, Inc.
InventorRonald D. Whitfield
Life of this patent
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Abstract
An overcast serving utility in the ventilation of tunnelways in an underground mine defined by an erected frame, typically made from steel, and including pivoting clips and splice strips for ready assembly and, as well, the absence of comingling of uncontaminated and contaminated air. The invention simplifies the approach for passing new air into the mining area and permitting contaminated air flowing through lateral tunnelways to pass over the overpass.
Claims13
An overcast for usage at intersecting tunnels in an underground mine comprising upstanding support members, cross members mounted on said upstanding support members, and a plurality of panels directly overlying said upstanding support members and said cross members serving top and side walls, where clips pivotally secured to the inner surfaces of said panels selectively engage portions of said upstanding support members and said cross members in a fastening relationship.
Dependencies are inferred from the claim text.