Plenum type air distribution system for head enclosure

Details Plenum type air distribution system for head enclosure Plenum type air distribution system for head enclosure

1976-03-25

1977-10-11

Michell, Robert W.

Surgery

Truss

Pad

A62B 1704

Patent

active

040529843

ABSTRACT:
An improved plenum type air distribution system adapted to be mounted in a head protective helmet or hood for distributing respiratation air to the interior of the helmet or hood is described which includes a combination air diffusion and noise attenuation means comprising a porous bladder or air sack connected to an air supply tube. Various materials suitable for use in making the air diffusing and noise attenuating air sack are disclosed and a preferred embodiment of the air sack is described.

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patent: 3315895 (1967-04-01), Klingbeil et al.
patent: 3587779 (1971-06-01), Beagles et al.
patent: 3601219 (1971-08-01), Raschke et al.
patent: 3874152 (1975-04-01), Dahl
patent: 3881478 (1975-05-01), Rosendahl et al.
patent: 3896897 (1975-07-01), Hilbush, Jr.
patent: 3963021 (1976-06-01), Bancroft

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