Hard-backed lampshade

Details Hard-backed lampshade Hard-backed lampshade

1997-03-31

1999-01-12

Dye, Rena L.

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

428 347, 428 357, 428 361, 428 365, 362351, 362355, 362356, 362357, 362361, F21V 112, F21V 122

Patent

active

058584889

ABSTRACT:
A lampshade includes a self-supporting backing member constituted of an extruded oriented polystyrene and an additive including a light-reflecting powdered filler, especially titanium dioxide, co-extruded with the oriented polystyrene and weighing in the range of 1%-10% of the total weight of the polystyrene. A fire-retarding filler, for example, antimony oxide, is also coextruded.

REFERENCES:
patent: 3634131 (1972-01-01), Foster
patent: 4000114 (1976-12-01), Gordon et al.
patent: 4053208 (1977-10-01), Kato et al.
patent: 4539631 (1985-09-01), Lieberman
patent: 4724327 (1988-02-01), Mitchell
patent: 5166230 (1992-11-01), Stecker
patent: 5247019 (1993-09-01), Cozens et al.

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