Air control apparatus

Details Air control apparatus Air control apparatus

1975-01-20

1976-06-01

Camby, John J.

Flexible or portable closure, partition, or panel

Fabric fastening means

To elongated element

98 1, 98 86, 160 1, 160133, 137 75, F16K 1304

Patent

active

039600653

ABSTRACT:
An air control apparatus is provided comprising a frame housing a plurality of extendable metal curtains spaced from one another in parallel planes, said curtains being extendable between a folded open condition and an unfolded closed condition.

REFERENCES:
patent: 685481 (1901-10-01), Kinnear
patent: 1029912 (1912-06-01), Collins
patent: 3401734 (1968-09-01), McCabe
patent: 3410311 (1968-11-01), Burdock
patent: 3467163 (1969-09-01), Vassaux
patent: 3687055 (1972-08-01), Dean, Jr. et al.
patent: 3756137 (1973-09-01), Scharres
patent: 3783771 (1974-01-01), Hartzell et al.
patent: 3785272 (1974-01-01), McNabney et al.

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