David Gregory Dunn

US Patent:

6647686, Nov 18, 2003

Filed:

Mar 9, 2001

Appl. No.:

09/803205

Inventors:

Daniel D. Dunn - Lehi UT 84043
David C. Dunn - Lehi UT 84043
Daniel V. Sorensen - Lehi UT 84043

International Classification:

E04B 228

US Classification:

52426, 5230917, 525926, 52442

Abstract:

A system for constructing insulated concrete structures comprising panels molded from a closed cell foam plastic, with a facing material attached to the outside surface of panels adding substantial strength to panels during material handling and construction, providing a substrate for finish materials and adding UV resistance to panel surfaces. Panels are placed horizontally in an opposing and parallel spaced-apart relationship. Vertical studs are embedded in panels extending the full height of the panels, each stud has a flange and groove connected with a web. Spreaders slide vertically into the grooves of studs in opposing panels creating a form with a cavity between panels. Each spreader has opposing flanges connected by horizontal members, horizontal members having multiple formations, thus when spreaders are stacked the formations compliment each other allowing wall reinforcing to be locked in any preferred location. A chase way is provided in panels to accommodate electrical wiring. Locations of studs and chase ways are shown by markings on the facing.