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US 5,447,470 AGranted
Apparatus insuring distribution and automatic control of air supplies, in particular for ventilation of buildings
OwnerMichel H. Zaniewskiinventor
Life of this patent
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OwnerMichel H. Zaniewskiinventor
Estimating the term…
An apparatus for the automatic control of ventilation of premises comprising a flexible flat membrane (11) attached by one of its edges in the interior of the casing (12) on the upper wall between two opposed openings (18) and (19). The upper wall supports the membrane. The membrane buckles and bends under the effect of an air current flowing through said casing in order to seal and block one of the openings (18) or (19) to a larger or smaller extent. The bending strength of the flexible planar membrane (11) is made different according to the direction of actuation of the membrane by the presence of the stops (13) and (15) which have a different length on both sides its attachment. This difference can be increased by the presence of perforations and holes in the membrane at the level of the stop closest to the attachments.
An automatic control device for ventilation comprising
An automatic control device for ventilation, in particular for premises, which includes a flexible membrane contained in a casing which is furnished with two openings which are disposed on opposite faces of the casing, wherein the flexible membrane is disposed between the two openings, wherein the flexible membrane is fastened at a horizontal edge, and wherein the flexible membrane is allowed to oscillate freely under the action of an air current which flows through said casing in order to block more or less one of the openings according to the direction of the air current, wherein,
Dependencies are inferred from the claim text.