Usg Interiors, Inc.

United States Gypsum Company

Donald James Leahy

Peder John Gulbrandsen

James Joseph Lehane

Abraham M Underkofler

James J Lehane, Jr

Lee Matthew Tedesco

Michael P O'Donnell

John Matthew Willi

Yelena Straight

Steven E Farley

Paul A Pomeroy

Ronald J Koval

Thomas Gregory Rowland

Thomas G Rowland

Components for constructing a ceiling grid across a span free of or with a limited number of suspension wires including main runners with a relatively high moment of inertia secured at their ends with brackets to wall moldings on opposing walls.

Free span ceiling grid system

An elongated grid runner, and its manufacture, comprising a pair of overlying metal strips roll-formed together into a shape suitable for use in a rectangular grid to support ceiling panels, one of said strips serving as a visible cap for concealing the other strip forming the main body of the grid runner when the grid member is employed in a completed ceiling, the strips being lanced at each end of the grid runner to lock the cap strip on the main body strip whereby when the overlying strips are simultaneously cut to a finish length prior to finish roll-forming, the ends of the strip are maintained in substantially overlying end-to-end registration where the cap is visible in a finished ceiling.

Grid runner cap anchoring lance

A roll formed sheet metal grid runner, and method of its manufacture, for a suspended ceiling grid having indexing tabs stamped from a central web of the runner profile, the tabs being effective to reliably locate ceiling panels and, when the grid runner is nested with other identical runners in a package, avoid marring of visible surfaces.

Indexing tab for grid runners

A main tee member having a measurement indicia system for use with a suspended ceiling includes a support flange and a web extending upwardly from the support flange. The web has first and second sides and a plurality of receiving channels extending from the first side of the web to the second side of the web. The receiving channels are configured to receive a cross tee member. A plurality of first indicia are marked on the first side, and a plurality of second indicia are marked on the second side, and are disposed at the same incremental distances along the length of the main tee member for indicating the location of a selected receiving channel for receiving a first selected cross tee member, and for indicating the location of a selected receiving channel for receiving a second selected cross tee member to be introduced from the opposite side.

Suspended ceiling with measurement indicia

Growing community of inventors

North Olmsted, OH, United States of America

Donald James Leahy