IP Library Granted Patent US 8,500,883
Granted Patent B2
US 8,500,883 · App. 12/175,635 · Granted Aug 6, 2013

Apparatus and system for filtering air

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Quick Facts
Patent No.
US 8,500,883
App. No.
12/175,635
Granted
Aug 6, 2013
Kind
B2
Abstract

A filter media for use in an inlet air filtration system includes a woven glass material and an amount of carbon impregnated within the woven glass material.

Claims (17)

1. A filter media for use in an inlet air filtration system, said filter media comprising: a plurality of anti-collapse rings sewn into a filter bag such that said plurality of anti-collapse rings are spaced substantially even along a length of the filter bag at regular intervals; a woven glass material coupled to said plurality of anti-collapse rings; and an amount of carbon impregnated within said woven glass material forming a carbon impregnated woven glass material, the carbon impregnated woven glass material being ionically conductive, wherein the carbon impregnated woven glass material is treated with a polytetrafluoroethylene material to facilitate laminating a porous membrane to the carbon impregnated woven glass material.

2. A filter media in accordance with claim 1 , wherein said filter media comprises less than about 5 weight percent carbon, based on said filter media total weight.

3. A filter media in accordance with claim 1 , wherein said filter media comprises less than about 2 weight percent carbon, based on said filter media total weight.

4. A filter media in accordance with claim 1 , wherein said filter media comprises less than about 1 weight percent carbon, based on said filter media total weight.

5. A filter media in accordance with claim 1 , wherein said filter media has an electrical resistance of less than about 500 MΩ.

6. A filter media in accordance with claim 1 , wherein said filter media has an electrical resistance of less than about 300 MΩ.

7. A filter media in accordance with claim 1 , wherein said filter media has an electrical resistance of less than about 1 MΩ.

8. A conductive filtration media for use in separating particulate matter from a stream of gas, said filtration media comprising: a plurality of anti-collapse rings sewn into a filter bag such that said plurality of anti-collapse rings are spaced substantially even along a length of the filter bag at regular intervals; a conductive base material coupled to said plurality of anti-collapse rings, wherein said conductive base material comprises a woven glass material impregnated with an ionically conductive material that comprises carbon; and a porous membrane laminated to said conductive base material, wherein said conductive base material is treated with a polytetrafluoroethylene material to facilitate laminating said porous membrane to said conductive base material.

9. A conductive filtration media in accordance with claim 8 , wherein said porous membrane comprises an expanded polytetrafluoroethylene material.

10. A conductive filtration media in accordance with claim 8 , wherein said conductive filtration media comprises less than about 5 weight percent carbon, based on said filter media total weight.

11. A conductive filtration media in accordance with claim 8 , wherein said conductive filtration media comprises less than about 2 weight percent carbon, based on said filter media total weight.

12. A conductive filtration media in accordance with claim 8 , wherein said conductive filtration media comprises less than about 1 weight percent carbon, based on said filter media total weight.

13. A conductive filtration media in accordance with claim 8 , wherein said conductive base material has an electrical resistance of less than about 500 MΩ.

14. A conductive filtration media in accordance with claim 8 , wherein said conductive base material has an electrical resistance of less than about 300 MΩ.

15. A conductive filtration media in accordance with claim 8 , wherein said conductive base material has an electrical resistance of less than about 1 MΩ.

16. An inlet air filtration system, said inlet air filtration system comprising: a filtration bag comprising a filter media comprising a plurality of anti-collapse rings coupled to said filtration bag such that said plurality of anti-collapse rings are spaced substantially even along a length of said filtration bag at regular intervals, said filter media further comprising a carbon impregnated woven glass material, said carbon impregnated woven glass material being ionically conductive, said carbon impregnated woven glass material treated with a polytetrafluoroethylene material to facilitate laminating a porous membrane to said carbon impregnated woven glass material.

17. An inlet air filtration system in accordance with claim 16 , wherein said porous membrane includes expanded polytetrafluoroethylene.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 3, 2014
From: GENERAL ELECTRIC COMPANY; BHA GROUP, INC.; ALTAIR FILTER TECHNOLOGY LIMITED
To: BHA ALTAIR, LLC
Reel/Frame 031911/0797 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INVENTORS FIRST NAME - KARMIN PREVIOUSLY RECORDED ON REEL 021257 FRAME 0389. ASSIGNOR(S) HEREBY CONFIRMS THE INVENTORS FIRST NAME KARIN WAS MISSPELLED. Recorded Aug 25, 2008
From: OLSON, KARMIN LORRAINE
To: BHA GROUP, INC.
Reel/Frame 021440/0316 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2008
From: OLSON, KARIN LORRAINE
To: BHA GROUP, INC.
Reel/Frame 021257/0389 →