Gas separation – With nonliquid cleaning means for separating media – With heating or cooling means
Reexamination Certificate
2005-09-13
2005-09-13
Smith, Duane (Department: 1724)
Gas separation
With nonliquid cleaning means for separating media
With heating or cooling means
C055S282200, C055S385300, C055S482000, C055S484000, C055S487000, C055S498000, C055S500000, C055S521000, C055S523000, C055S524000, C055SDIG001, C055SDIG003, C060S311000
Reexamination Certificate
active
06942708
ABSTRACT:
A diesel particulate filter construction, for filtering particulate from a flow of exhaust, includes a first layer of electrically resistive metal filter material in line with the flow of exhaust with particulate therein and a second layer of electrically resistive filter material which is also in line with the flow of exhaust with particulate therein. The layers are pleated cylinders concentrically positioned relative to one another. Current from a power supply is routed through the first layer and the second layer, which are electrically connected in series to one another. The layers are positioned so that exhaust flows through both the layers. Sufficient heat is generated by the flow of current through the layers to generate heat to, in turn, burn off entrapped particulate. The layers may be made of made of different materials of different fiber sizes or coated with different catalysts to generate different amounts of heat from one another to improve the filtration characteristics of the particulate filter construction.
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Ibrahim Osama
Nardi Zachary
Peter Klaus J.
Saeid Amin
Willey Peter
Barlow Josephs & Holmes, Ltd.
Greene Jason M.
Rypos, Inc.
Smith Duane
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