Ventilation – Having outlet airway – Having readliy movable air regulating louver – damper – or cover
Reexamination Certificate
2007-02-20
2007-02-20
Cocks, Josiah (Department: 3749)
Ventilation
Having outlet airway
Having readliy movable air regulating louver, damper, or cover
C454S362000, C454S363000, C454S364000, C052S198000
Reexamination Certificate
active
11032174
ABSTRACT:
The automatic vent damper has various embodiments of a wind actuated vent system, which automatically closes to preclude entry of wind blown water when a wind of predetermined velocity and direction acts upon the device. The damper may be installed as an off-ridge or ridge vent system, or in other operating environments and installations as desired. Various mechanisms are used to operate the device, with all including one or more springs, which hold a rigid door or flap, open in light wind conditions. However, when a wind of sufficient velocity blows toward the vent opening, the door or flap is closed due to aerodynamic forces thereon to preclude entry of wind blown water into the device. The door or flap automatically opens again due to the spring mechanism when the wind abates.
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doityourself.com/attic/ridgevents.htm, website, printed Nov. 26, 2004, Cor-A-Vent® and Celotex Roll Vent® continuous ridge vent material, three sheets.
kbsmetalroofing.com/x5.htm website, printed Nov. 26, 2004, “X-Treme X-5” ridge vent, two sheets.
Cocks Josiah
Kosanovic Helena
Litman Richard C.
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