Filtering respirator

Details Filtering respirator Filtering respirator

1980-09-18

1982-11-30

Recla, Henry J.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820616, A62B 710

Patent

active

043611460

ABSTRACT:
A filtering respirator in the form of a mask has an outer casing and a filter layer inside the casing. The edge of the filter liner is sealed to the casing and the rest of the filter layer is spaced from the casing to provide an interspace between them which is connected with the outside atmosphere by an opening in the casing so that exhaled air will leave the mask at a velocity sufficient to prevent inhaling of the exhaled air.

REFERENCES:
patent: 609923 (1898-08-01), Tuttle
patent: 831623 (1906-09-01), Murphy
patent: 2067026 (1937-01-01), Schwartz
patent: 2417759 (1947-03-01), Johnson
patent: 2681060 (1954-06-01), Swindell

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