David P Stover

US Patent:

46663550, May 19, 1987

Filed:

Aug 4, 1986

Appl. No.:

6/892562

Inventors:

David R. Stover - Chicago IL

Assignee:

USG Industries, Inc. - Chicago IL

International Classification:

F61B 3704
F61B 4100

US Classification:

411 85

Abstract:

A pair of legs depending from the ring of a lock nut carrier pass through oppositely disposed arcuate slits in a spring clip and cleave to the lock nut so that the spring clip will support the nut within a metal channel framing member. The carrier and nut are locked into position ready to receive a fastener by pushing down on the carrier and spring clip with a thumb or finger and rotating the carrier legs within the arcuate slits.

US Patent:

62603256, Jul 17, 2001

Filed:

Mar 17, 1999

Appl. No.:

9/270880

Inventors:

Alan C. Wendt - Barrington IL
David R. Stover - Evanston IL
Gerald L. Koski - Parma OH

Assignee:

USG Interiors, Inc. - Chicago IL

International Classification:

E04B 906
E04B 918

US Classification:

5250607

Abstract:

A suspended ceiling system in which the grid runners are largely concealed by the panels to produce a distinctive high quality appearance. In various illustrated embodiments, the visual effect is produced as a result of the panels being separated by a relatively narrow gap in two perpendicular directions or by a narrow gap in one direction and essentially no gap in the perpendicular direction, and the grid being recessed above the main face of the panels. The panels are accurately positioned on the grid by metal clips, normally permanently attached to the panels, which engage upstanding flange portions of the grid runners. The accurate positioning afforded by the clips assures that visually distracting variations in the size of the narrow gaps are avoided. The clips can also serve to avoid accidental dislodging of the panels.

US Patent:

60358769, Mar 14, 2000

Filed:

Feb 28, 1997

Appl. No.:

8/808653

Inventors:

David R. Stover - Evanston IL
Merritt W. Seymour - Chicago IL
Robert J. Surra - Wheaton IL
Alan C. Wendt - Barrington IL
Merle Lindby-Young - Bartonville TX

Assignee:

USG Interiors, Inc. - Chicago IL

International Classification:

E04H 1528

US Classification:

135 98

Abstract:

A free-standing ceiling structure including an elongate column member having a bottom end and a top end. A plurality of primary arms are attached to the column member and extend radially therefrom. Each primary arm includes first and second sub-arms extending outwardly therefrom. A pair of peripheral panel members are respectively attached to and supported by a primary arm and by the sub-arms attached to the primary arm. A plurality of central canopy members are attached to and supported by the primary arms. A plurality of secondary arms extend radially from the column member and are located below the primary arms. The outer end of each secondary arm includes a light fixture. The column member includes one or more utility devices for providing environmental control and communication services.

US Patent:

D3960188, Jul 14, 1998

Filed:

Feb 10, 1997

Appl. No.:

D/066290

Inventors:

David R. Stover - Evanston IL
Merritt W. Seymour - Chicago IL
Robert J. Surra - Wheaton IL
Alan C. Wendt - Barrington IL
Merle Lindby-Young - Bartonville TX

Assignee:

USG Interiors, Inc. - Libertyville IL

International Classification:

1102

US Classification:

D11118