US 7,320,723 B2
Exhaust gas filter and filtering system
Robert R. Sewell, Sr., Wendell, Id. (US)
Assigned to Air Institution, Inc., Cochise, Ariz. (US)
Filed on Nov. 16, 2004, as Appl. No. 10/988,566.
Application 10/988566 is a continuation in part of application No. 10/716708, filed on Nov. 20, 2003, abandoned.
Prior Publication US 2005/0126139 A1, Jun. 16, 2005
Int. Cl. B01D 46/30 (2006.01); F01N 3/022 (2006.01)
U.S. Cl. 55—512  [55/385.3; 55/490; 55/503; 55/515; 55/516; 55/518; 55/519; 55/523; 55/DIG. 10; 55/DIG. 30; 55/DIG. 37; 96/138; 96/139; 96/147; 96/153; 96/383; 96/386; 60/311] 17 Claims
OG exemplary drawing
 
1. An exhaust gas filtering system comprising:
a guard casing;
a filter cartridge operatively secured inside said guard casing, such that said guard casing houses said filter cartridge;
a diatomite material operatively present in said filter cartridge;
a first longitudinal wall having a plurality of gas-permeable openings,
a second longitudinal wall having a plurality of gas-permeable openings, wherein said first longitudinal wall is operatively positioned in substantial spaced alignment with said second longitudinal wall;
the diatomite material operatively present between said first longitudinal wall and said second longitudinal wall; and
a mesh tube operatively positioned outside and around said first longitudinal wall and said second longitudinal wall, said mesh tube having a plurality of mesh openings.