Air filtering device for protection suits

Details Air filtering device for protection suits Air filtering device for protection suits

2005-12-28

2009-02-03

Hopkins, Robert A (Department: 1797)

Gas separation

With means facilitating transportability or handling of...

C055S471000, C055S472000, C055S486000, C096S385000, C181S212000, C181S264000

Reexamination Certificate

active

07485165

ABSTRACT:
An air filtering device for protection suits includes a case in which a fan unit is received and a filtering unit is engaged with a hole in a wall of the case and located outside of the case. A duct of the fan unit extends through a top of the case and is in communication with a muffler connected on the top of the case. A hose is connected with an aperture of the muffler. The fan unit can be driven by AC or DC power and the noise from the fan unit can be reduced by the muffler.

REFERENCES:
patent: 4213224 (1980-07-01), Miller

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