DAVID C DUNBAR
Engineering in Winter Haven, FL
License number
Massachusetts 32956
Issued Date
Dec 19, 1986
Expiration Date
Jun 30, 2018
Type
Structural Engineer
Address
Address
Winter Haven, FL 33881
Professional information
Metal Roof Truss Having Generally S-Shaped Web Members
US Patent:
8141318, Mar 27, 2012
Filed:
Oct 1, 2008
Appl. No.:
12/243813
Inventors:
David C. Dunbar - Winter Haven FL, US
William L. Babich - Orlando FL, US
Greg Kelling - West Ampton NJ, US
William L. Babich - Orlando FL, US
Greg Kelling - West Ampton NJ, US
Assignee:
Illinois Tool Works, Inc. - Glenview IL
International Classification:
E04B 7/08, E04B 3/02
US Classification:
52636, 52639, 52692, 52693, 52 901, 52846, 52856
Abstract:
The metal truss assembly disclosed herein is made from generally U-shaped metal chords and multiple generally S-shaped web members extending between the chords. A typical truss assembly has a pair of elongated, opposed, diverging metal upper chords and a lower chord, with the chords each forming generally U-shaped channels defining an interior chord space. A plurality of elongated metal web members extend between the upper and lower chords, with each of the web members extending into the interior space of an upper chord and the lower chord and attached to the chords. The web members, as taught herein, have a generally S-shaped cross-section. The shape of the web members is an advancement of prior art web members.