초록 ▼

A wall construction wherein a sheet of paper covered gypsum wallboard has at least one V-shaped groove formed part way through the thickness of the wallboard, and a sheet of rigid bendable sheet metal, conforming to one surface of the wallboard, along the groove area, is laminated to the wallboard w

A wall construction wherein a sheet of paper covered gypsum wallboard has at least one V-shaped groove formed part way through the thickness of the wallboard, and a sheet of rigid bendable sheet metal, conforming to one surface of the wallboard, along the groove area, is laminated to the wallboard whereby folding of the wallboard and sheet metal, along the groove, closing the groove, results in a folded section which remains firmly folded by reason of the folded rigid sheet metal laminate.

대표청구항 ▼

A wall panel unit comprising a single piece, paper covered gypsum wallboard having spaced grooves and, laminated thereto, a sheet of bendable rigid sheet metal in the area of each said groove, said grooves having a V-shape of an angle of about 100°and being parallel to and located about three inches

A wall panel unit comprising a single piece, paper covered gypsum wallboard having spaced grooves and, laminated thereto, a sheet of bendable rigid sheet metal in the area of each said groove, said grooves having a V-shape of an angle of about 100°and being parallel to and located about three inches from each longitudinal edge of said wallboard, said grooves having a depth equal to the thickness of one layer of paper plus the thickness of the gypsum core, and said laminated sheet metal being disposed on said wallboard in the areas of said grooves and being shaped to substantially conform to the abutting surface of said wallboard to which said sheet metal is laminated, whereby said wallboard and said metal may be simultaneously bent to substantially close said groove and to remain bent while free of any adhesive in said groove by said rigid bent sheet metal which is laminated to said wallboard.