Structure ventilating device

Details Structure ventilating device Structure ventilating device

1997-02-12

1998-09-08

Joyce, Harold

Ventilation

Having outlet airway

Having readliy movable air regulating louver, damper, or cover

454365, 454359, 454260, 454368, 52199, F24F 702

Patent

active

058038051

ABSTRACT:
A ventilating device for a home or other building includes a frame for covering a ventilating opening in the structure. The frame defines a passage for communicating the ventilating opening to the atmosphere. The passage contains a freely movable valve member which normally rests in an inactive position under gravitational force to permit venting through the passage. The valve member moves in response to wind pressure to an active position in which the member seats against a seating surface within the passage to prevent entry of wind-driven precipitation into the structure. When the wind subsides, the valve member returns under the force of gravity to its inactive position.

REFERENCES:
patent: 4399738 (1983-08-01), Sharkey
patent: 4624176 (1986-11-01), Steinke
patent: 4667581 (1987-05-01), Hovland
patent: 5509445 (1996-04-01), Couet
patent: 5603657 (1997-02-01), Sells

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