Claims
- 1. A low profile chemical biological air filter device, comprising:
- a frame having a first end for attachment to a mask and having an upwardly facing surface defining an inlet for said filter, said frame having a length sufficient to space first and second filter means from said inlet to said attachment first end and a width sufficient to enclose said two filter means, said frame having a thickness no greater than that necessary to contain only one of said two filter means to thereby minimize the thickness of said frame by placing said two filter means side by side;
- said first and second filter means including a HEPA filter for removing particulate material from the air and a charcoal filter bed for secondary filtering of said air, said HEPA filter being supported in said frame at said inlet,
- said frame having connector means for defining an air flow path from said inlet through said HEPA filter through said charcoal filter bed to said attachment first end, said frame further having a height defined by the thickness of only one of said filter means, wherein said HEPA filter and said charcoal filter bed sequentially filter air entering said inlet.
- 2. The device of claim 1, which further includes a sealant to hold said HEPA filter in place.
- 3. The device of claim 1, wherein said connector means is a flexible hollow connector made from bromobutyl rubber or other applicable material.
- 4. The device of claim 1, which further includes retainer means for supporting said HEPA filter and charcoal filter bed constructed from plastic or aluminum and having a shape similar to one-sixteenth mesh screen.
- 5. The device of claim 1, wherein said charcoal filter bed comprises a Whetlerized charcoal filter material.
- 6. The device of claim 5, which further includes a fines filter means for protecting from dust which may be dislodged from said charcoal filter bed.
- 7. A low profile chemical biological air filter, comprising:
- a frame having a first end for attachment to a mask and having an upwardly facing surface defining an inlet for said filter, said frame having a length sufficient to space first and second filter means from said inlet to said attachment first end and a width sufficient to enclose said two filter means, said frame having a thickness no greater than that necessary to contain only one of said two filter means to thereby minimize the thickness of said frame by placing said two filter means side by side;
- said first and second filter means including a HEPA filter for removing particulate material from the air and a Whetlerized charcoal filter bed for secondary filtering of said air, said HEPA filter being supported in said frame at said inlet and said charcoal filter bed including a fines filter means for protecting from dust which may be dislodged from said charcoal filter bed;
- said frame having connector means including flexible hollow connector made from bromobutyl rubber or other applicable material for defining an air flow path from said inlet through said HEPA filter through said charcoal filter bed to said attachment first end, said frame further having a height defined by the thickness of only one of said filter means, wherein said HEPA filter and said charcoal filter bed sequentially filter air entering said inlet.
- 8. The device of claim 7, which further includes a sealant to hold said HEPA filter in place.
- 9. The device of claim 7, which further includes retainer means for supporting said HEPA filter and charcoal filter bed constructed from plastic or aluminum and having a shape similar to one-sixteenth mesh screen.
Government Interests
The invention described herein may be made, used, or licensed by or for the Government for Governmental purposes without the payment to me of any royalties thereon or therefor.