Insulated window shade assembly

Details Insulated window shade assembly Insulated window shade assembly

1984-12-05

1986-12-02

Foss, J. Franklin

Flexible or portable closure, partition, or panel

Pleating type

160268R, A47H 500

Patent

active

046257861

ABSTRACT:
An insulated window shade assembly includes a pleated, two-ply window shade and two cooperable guide rails which are adapted for attachment to the side walls of a window casing. The shade consists of two pleated plys, which in the preferred embodiment are interconnected by means of draw strings which pass through the pleats. The edges of the pleated plys are shaped so that the unfolding of the pleats as the shade is lowered results in the edges forming an air-tight seal with the guide rails when the shade is fully lowered. As the shade is raised the edges of the pleated plys partially draw away from the guide rails to as to facilitate raising and lowering of the shade.

REFERENCES:
patent: 1827718 (1931-10-01), Whitney
patent: 4019554 (1977-04-01), Rasmussen
patent: 4307768 (1981-12-01), Anderson
patent: 4347887 (1982-09-01), Brown
patent: 4388354 (1983-06-01), Suominen
patent: 4418739 (1983-12-01), Woolnough et al.
patent: 4450027 (1984-05-01), Colson

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