Activated charcoal filter layer for gas masks

Details Activated charcoal filter layer for gas masks Activated charcoal filter layer for gas masks

1989-04-20

1991-02-12

Hart, Charles

Gas separation

With separating media bypass or system gas pressure relief

Valved bypass means

55387, 55524, B01D 5302

Patent

active

049920847

ABSTRACT:
The activated charcoal filter layer for gas masks contains a highly air-permeable, three-dimensional carrier framework essentially stable in shape, formed of wires, monofilaments or stays, to which a layer of granular, particularly spherical activated charcoal particles with a diameter of 0.1 to 1 mm is affixed. The carrier framework can be composed of wires, monofilaments or stays, the distance between them being at least twice as great as the diameter of the activated charcoal particles. The carrier framework can also be a large-pore reticulated polyurethane foam which has a weight of 20 to 60 g/l and pores with a diameter of 1.5 to 3 mm. The carrier framework can furthermore consist of wire netting or wire mesh arranged in layers, as well as of plastic or wire spirals with a length equal to and up to 10 times their diameter, or of wires or monofilaments with a length of 2 to 10 mm, which are held by twisted metal or plastic wires and project perpendicular from this axis in the shape of a spiral staircase. In spite of a very slight pressure drop, the filter performance is excellent.

REFERENCES:
patent: 3374608 (1968-03-01), Manes
patent: 3416293 (1968-12-01), Alexander
patent: 3713281 (1973-01-01), Asker et al.
patent: 4510193 (1985-04-01), Blucher et al.
patent: 4643182 (1987-02-01), Klein
patent: 4800190 (1989-01-01), Smolik
patent: 4906263 (1990-03-01), Von Blucher et al.

Affiliated with

Also associated with

Rating

Activated charcoal filter layer for gas masks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Activated charcoal filter layer for gas masks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Activated charcoal filter layer for gas masks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-18131