Protective shutter assembly for a forced air cooling system

Details Protective shutter assembly for a forced air cooling system Protective shutter assembly for a forced air cooling system

1998-05-11

2000-03-28

Freay, Charles G.

Pumps

Motor driven

Electric or magnetic motor

417297, 417427, 361695, F04B 1700, H05K 720

Patent

active

06042348&

ABSTRACT:
A protective shutter assembly for a fan of a forced air cooling system includes lightweight shutter members mounted for pivoting motion about vertical axes. When the fan is operative, its shutter members are pivoted in a first direction to expose the fan and allow air to be exhausted therefrom. When a fan is inoperative, its shutter members pivot in a second direction toward the fan and overlap to prevent air from being reversely drawn into the fan.

REFERENCES:
patent: 1532635 (1925-04-01), Osbun
patent: 4495545 (1985-01-01), Dufresne et al.
patent: 4594940 (1986-06-01), Wolbrink et al.
patent: 4648007 (1987-03-01), Garner
patent: 5412534 (1995-05-01), Cutts et al.
patent: 5773755 (1998-06-01), Iwatare

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