The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 1988
Filed:
Jul. 19, 1985
Dale A Lehr, Dallas, TX (US);
Charles L Nunley, Dallas, TX (US);
Loadmaster Systems, Inc., Dallas, TX (US);
Abstract
A method of building a roof wherein a horizontally disposed roof deck assembly is formed comprising: a sheet of corrugated steel material, preferably having a symmetrical rib pattern wherein the quantity of steel is equally distributed above and below a neutral axis; a sheet of insulation material; and a sheet of rigid substrate material mechanically fastened together by screws. The screws extend through the rigid substrate and through ridges on the upper side of the corrugated sheet material to restrain the ridges from above against lateral distortion under loading, thus forcing the corrugated sheet to maintain its shape and operate to capacities in excess of its expected or predictable flexural load capabilities. The roof deck assembly is secured to a supporting structure and suitable adhesive material, such as asphalt, is employed for securing a waterproof covering thereover. Ventilation apparatus is provided to control temperature and pressure of air in channels between the upper surface of the corrugated sheet and the lower surface of the substrate; and the upper surface of the corrugated sheet has a reflective surface to reflect heat into the channels.