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Mine ventilation structure and a deck panel for such a structure

  • US 9,447,685 B2
  • Filed: 04/14/2015
  • Issued: 09/20/2016
  • Est. Priority Date: 05/02/2014
  • Status: Active Grant
First Claim
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1. A mine ventilation structure comprisinga deck including a plurality of elongate sheet metal panels,each panel being generally of inverted channel shape in transverse cross-section, the panel having a top web and first and second sides extending down from the top web,the panels extending alongside one another and the top webs of the panels forming a deck surface,tongue-and-groove connections between adjacent sides of adjacent panels,each tongue-and-groove connection comprising a tongue formed in a first side of one panel received in a groove formed in a second side of an adjacent panel to effect a transfer of a load on the deck from the one panel to the adjacent panel,wherein at least one of the tongue-and-groove connections is a tapered tongue-and-groove connection, andwherein the tongue of the at least one tapered tongue-and-groove connection tapers toward an outer end of the tongue at a tongue taper angle in the range of about 60-120 degrees.

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