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US 9,598,864 B1Granted
Suspension system for flat drywall ceiling
AssigneeUSG Interiors, Inc.
InventorsSamuel D. Hulka, James J. Lehane, Peder J. Gulbrandsen
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AssigneeUSG Interiors, Inc.
InventorsSamuel D. Hulka, James J. Lehane, Peder J. Gulbrandsen
Estimating the term…
A suspended drywall ceiling grid construction comprising a plurality of uniformly spaced parallel sheet metal support bars, a plurality of spaced grid tees carried on lower sides of the support bars, the support bars having regularly spaced centers for engaging and supporting grid tee reinforcing bulbs, the centers and grid tees being constructed and arranged to present lower faces of flanges of the grid tees in a common plane, the support bars having intermediate centers between said regularly spaced centers for receiving butt joint tees, the intermediate centers and butt joint tees being constructed and arranged to present lower faces of flanges of the butt joint tees in a plane a predetermined distance above the common plane.
A suspended drywall ceiling grid construction comprising a plurality of uniformly spaced parallel sheet metal support bars, a plurality of spaced grid tees carried on lower sides of the support bars, the support bars having regularly spaced centers engaging and supporting reinforcing bulbs of the grid tees, the centers and grid tees being constructed and arranged to support lower faces of flanges of the grid tees in a common plane below the support bars, the support bars having intermediate centers between said regularly spaced centers for receiving butt joint tees, the intermediate centers and butt joint tees being constructed and arranged to support lower faces of flanges of the butt joint tees closer to the support bars than the spacing of the grid tee flange lower faces from the support bars.
A method for taping and finishing butt joints of a drywall ceiling by constructing a grid of sheet metal hanger bars and sheet metal grid tees suspended transversely below and from the hanger bars, arranging the grid tees on the hanger bars at regular centers, arranging butt joint tees between pairs of adjacent grid tees at the regular centers, the butt joint tees having drywall sheet receiving flanges elevated above flanges of the grid tees, hanging sheets of drywall on the grid by screws driven through the sheets and the flanges, butt ends of the sheets being aligned under and screwed to butt joint tees whereby the butt ends of the sheets are drawn up above a plane in which major face areas of the sheets underlying the regularly spaced grid tees lie, filling a zone underlying the butt ends of the sheets and above the plane of the major face areas with joint tape and joint compound.
Dependencies are inferred from the claim text.