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:
Feb. 28, 1978
Filed:
Nov. 11, 1976
Donald B Keith, Owasso, OK (US);
Nordam, Tulsa, OK (US);
Abstract
A roof panel that is lightweight and structurally strong, and that can be assembled with other panels to form large area surfaces, comprises a rectangular panel made with an extruded U-shaped channel frame member, that is mitered at the corners. The frame is enclosed by two sheet members that are attached by adhesive bond supplemented by screws or other type fasteners to the outer surface arms of the frame. The base portion of the U-shaped channel member has a flange extension on one side whereby the two edges of two adjacent panels can be bolted together. A resilient sealing gasket is placed between the two flange extensions, of the U member so that as the bolts tighten the two members together, the joint between is sealed by the gasket. After the two panels are joined in this manner, a specially shaped inverted U shaped ridge cover channel is placed over the sealed joint, and is latched into notches, which hold the cover in place. The boxed-in section comprising the frame and sheet members is filled with an appropriate composition of foamed plastic.