Filter element

Details Filter element Filter element

1993-06-17

1995-10-17

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820617, 12820615, 55DIG35, A62B 700

Patent

active

RE0350621

ABSTRACT:
A filter element adapted for attachment to a respirator face piece which includes front and rear walls of filter material, a breather tube, and a porous inner layer which maintains the front and rear walls in a spaced-apart relationship over substantially their entire area and which functions to evenly distribute air flow across the available filter element surface area.

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DIN 3181 Part 2, "Atemfilter fur Atemschultzgerate", (Mar. 1980).
BS 2090 "Respirators for Protection Against Harmful Dusts and Gases", (1969).
BS 4555 "High Efficiency Dust Respirators", (1970).
20 CFR 11 Subpart K, Sect. 11.130-11.140-12, (1987).
30 CFR 11 Subpart K, sect. 11.140-4, (1987).
30 CRF 11 Subpart K, 11.140-9, (1987).
30 CFR 11 Subpart K, 11.140-11, (1987).
30 CFR 11 Subpart K, 11.140-6, (1987).
Military Specification, "Filter Element Set, Chemical-Biological Mask, M13A2", MIL-F-51425A(EA), 10 Sep. 1986.

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