Appropriate Technology Corporation

Bruce C Gardner

David A May

Daniel L Ingold

James Woolnough

An insulating window shade assembly includes a shade frame having a pair of vertical side channels open in a direction facing one another and designed to be mounted on the inside of the window to be insulated. A flexible insulating shade having inner and outer spaced apart parallel panels extends downwardly from the top of the channels, and the margins of the panels extend into the channels. Edge seals are provided in each channel made up of a pair of flexible polyester film strips with the adjacent sides of the strips being spring biased towards one another but being separable so that the margins of the shade panels may lie between them. The flexible character of the strips forms an effective insulating seal about the margins. A rerailer assembly is provided at the tops of the edge seals to guide the margins of the each panel between the strips of the edge seal should they become dislodged.

Edge seal and rerailer for insulating shade

An insulating shade including a channel-type frame which is designed to be permanently installed on the prime window frame. The shade assembly which is mounted in the frame includes a pair of rollers which are geared together so as to rotate simultaneously and simultaneously either take up or play out the shade material. The rollers with the shade are supported on bearing plates which in turn are hung on spring brackets that snap into the channels permanently secured to the window frame. A cord operated pulley carries a gear which in turn drives the two rollers so as to raise and lower the shade. Weather stripping is secured inside the channels of the frame, which cooperate both with the sides of the shade itself and the weighted roller at the bottom of the shade to prevent cold air from flowing about the shade.

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Brattleboro, VT, United States of America

Bruce C Gardner