Gas separation – Specific media material – Ceramic or sintered
Reexamination Certificate
2011-03-15
2011-03-15
Griffin, Walter D (Department: 1774)
Gas separation
Specific media material
Ceramic or sintered
C055S522000, C055S524000
Reexamination Certificate
active
07905939
ABSTRACT:
A filter block, particularly for filtering particulates present in the exhaust gases of an internal combustion engine, including peripheral inlet (50,14p2) and outlet (52,14p1) channels arranged alternately at the periphery of the block and each including an external wall (44;54;401,402;403) exposed to the exterior of the block and an internal wall (46;56;404,405;406,407,408) arranged inside the block. The block according to the invention is remarkable in that it includes at least one group (G) of two adjacent peripheral channels (50,52) such that, in a transverse plane of section (P), the ratio R of the average thickness “E” of all the external walls (44,54) of the group (G) to the average thickness “e” of all the internal walls (46,56) of the (G) is greater than 1.2.
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EP Office Action dated Mar. 31, 2010 in corresponding 04816467.7.
Bardon Sebastien
Briot Anthony
Gleize Vincent
Griffin Walter D
Orlando Amber
Saint-Gobain Centre de Recherches et d'Etudes European
Young & Thompson
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