Air flow control system

Details Air flow control system Air flow control system

1990-10-10

1992-05-12

Joyce, Harold

Ventilation

Having inlet airway

Including specific air distributor

454296, 454333, 454903, F24F 706

Patent

active

051117398

ABSTRACT:
A duct to carry air has openings along it and a flexible sheet extending longitudinally within it. The end of the sheet adjacent the point of air intake can be brought against one side of the duct or the other, either to allow air to be blown through the duct along the side thereof in which the holes are located or to force the air to go through the duct along the other side, thereby not being able to emerge from those holes.

REFERENCES:
patent: 1592718 (1926-07-01), Browne
patent: 2180173 (1939-11-01), Share
patent: 2807329 (1957-09-01), Caldwell

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