Wind guiding cover

Details Wind guiding cover Wind guiding cover

2011-08-30

2011-08-30

Sandvik, Benjamin (Department: 2826)

Rotary kinetic fluid motors or pumps

Including working fluid force responsive vane or flow control

C415S211200, C415S026000, C415S048000, C415S049000, C454S208000, C454S184000

Reexamination Certificate

active

08007228

ABSTRACT:
A wind guiding cover, mounted on a fan, includes a rotating ring and a plurality of slats. The rotating ring is pivoted to the fan, and has an opening for an air flow generated by the fan to pass through. The rotating ring has a weight portion for offsetting the center of gravity of the rotating ring and normally maintaining the rotating ring at a static equilibrium position. The slats are pivoted to the rotating ring and arranged at the opening. When the fan operates, the slats are lifted by the air flow to open the opening. When the fan stops operating, the slats cover the opening under the gravity.

REFERENCES:
patent: 4543941 (1985-10-01), Newell
patent: 7302967 (2007-12-01), Maeda et al.
patent: 7800902 (2010-09-01), Della Fiora et al.
patent: 7952870 (2011-05-01), Zhou

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