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US 4,304,174 AGranted
Segmented panel curtain opening closure
AssigneeEntropy Controls, Inc.
InventorsJeffrey D. Hickson, Robert S. Dworkin
Life of this patent
Estimating the term…
Abstract
An improved opening closure system utilizing a plurality of curtains supported in a way to cover the opening with alternate embodiments having primary and secondary curtains acting as a thermal siphon and with fan units as a power air destratifier.
Claims11
An improved system for the support of curtains utilized as opening closures comprising:
- An angle iron support member suspended in an opening in an enclosure having defined therein an area of use with the angle thereof pointing upwards forming a top and its open portion facing downwards having a front downwardly sloping portion and a rear downwardly sloping portion;
- a plurality of overlapping curtain member strips positioned over said front portion above said top, down said rear portion and extending to the inside of the rear portion of said angle iron;
- and
- a strip magnet affixed to the top of said curtain members adhered by magnetic attraction to the inside of the rear portion of said angle iron.
1 more element
Dependencies are inferred from the claim text.