Helmet with filtered air supply

Details Helmet with filtered air supply Helmet with filtered air supply

1988-11-07

1992-05-19

Burr, Edgar S.

Surgery

Respiratory method or device

Body or head supported means, other than face mask or hood,...

12820124, A62B 2900

Patent

active

051138530

ABSTRACT:
A protective helmet also provides filtered air for respiration. A thin flat fan and motor assembly with motor and blades coplanar mounts in an aperture in the crown. A hard cover covers both fan and aperture. A resilient cushion spaces the helmet and ducts the filtered air over the forehead and beneath the visor to the nose and mouth. The air flow rate is so great that the visor and helmet need not be sealed to the face to prevent inhalation of unfiltered air. The fan-motor structure reduces the center of gravity for comfortable use.

REFERENCES:
patent: 3822698 (1974-07-01), Guy
patent: 3963021 (1976-06-01), Bancroft
patent: 4730612 (1988-03-01), Dampney

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