A roll-formed grid runner comprising a sheet metal strip folded into an upper hollow single wall reinforcing bulb, a double wall web below the bulb, a channel extending laterally from both sides of a lower end of the web to a bend and upwardly from the bend to a panel supporting elevation, the bend on each side of the web existing at a longitudinally extending score line where a thickness of the strip is locally reduced.
申请公布号
WO2012018550(A1)
申请公布日期
2012.02.09
申请号
WO2011US44941
申请日期
2011.07.22
申请人
USG INTERIORS, INC.;LEHANE, JAMES J.;GULBRANDSEN, PEDER J.;HAMMOND, JOHN L.;UNDERKOFLER, ABRAHAM M.;PAULSEN, MARK R.
发明人
LEHANE, JAMES J.;GULBRANDSEN, PEDER J.;HAMMOND, JOHN L.;UNDERKOFLER, ABRAHAM M.;PAULSEN, MARK R.