초록 ▼

Windows, doors and the like are constructed from a composite frame structure combining both metal and plastic components. The frame structure includes a rigid, integral self-supporting metal frame enclosed by a similar rigid, integral self-supporting plastic frame. The resulting windows and doors ha

Windows, doors and the like are constructed from a composite frame structure combining both metal and plastic components. The frame structure includes a rigid, integral self-supporting metal frame enclosed by a similar rigid, integral self-supporting plastic frame. The resulting windows and doors have enhanced esthetic appeal while, at the same time, providing a weatherproof structure of enhanced strength.

대표청구항 ▼

A composite metal and plastic frame structure for windows and doors comprising a rigid self-supporting metal inner frame, a rigid self-supporting plastic outer frame having an enclosed hollow interior, said plastic outer frame having open outer edges about the outer periphery thereof and closed inne

A composite metal and plastic frame structure for windows and doors comprising a rigid self-supporting metal inner frame, a rigid self-supporting plastic outer frame having an enclosed hollow interior, said plastic outer frame having open outer edges about the outer periphery thereof and closed inner edges about the inner periphery thereof, and plastic members attached to the open outer edges of said plastic outer frame to close said open outer edges thereat, said metal inner frame contained within the enclosed hollow interior of said plastic outer frame to provide said frame structure, whereby the exterior of said metal inner frame is completely surrounded by said plastic outer frame.