Asymmetric honeycomb wall-flow filter having improved...

Details Asymmetric honeycomb wall-flow filter having improved... Asymmetric honeycomb wall-flow filter having improved...

2005-03-24

2009-10-13

Greene, Jason M (Department: 1797)

Gas separation

Specific media material

Ceramic or sintered

C055S385300, C055SDIG030, C060S311000, C428S116000

Reexamination Certificate

active

07601194

ABSTRACT:
A honeycomb filter includes an array of interconnecting porous walls which define an array of first channels and second channels. The first channels are bordered on their sides by the second channels and have a larger hydraulic diameter than the second channels. The first channels have a square cross-section, with corners of the first channels having a shape, such as a bevel or fillet, such that the thickness, t3, of the porous walls adjoining the corners of the first channels is comparable to the thickness, t4, of the porous walls adjoining edges of the first and second channels. Embodiments having a corner fillet with a radius, Rc, are also disclosed. Embodiments wherein 0.30 t4≦Rc≦1.0 t4exhibit combinations of low wall pressure drop and low thermal stress.

REFERENCES:
patent: 4276071 (1981-06-01), Outland
patent: 4329162 (1982-05-01), Pitcher, Jr.
patent: 4335023 (1982-06-01), Dettling et al.
patent: 4364781 (1982-12-01), Vesterlund
patent: 4416676 (1983-11-01), Montierth
patent: 4417908 (1983-11-01), Pitcher, Jr.
patent: 4420316 (1983-12-01), Frost et al.
patent: 4521532 (1985-06-01), Cho
patent: 5256054 (1993-10-01), Cochetto et al.
patent: 5714228 (1998-02-01), Beckmeyer et al.
patent: 5952079 (1999-09-01), Andou et al.
patent: 6159431 (2000-12-01), Inoue et al.
patent: 6464744 (2002-10-01), Cutler et al.
patent: 6508852 (2003-01-01), Hickman et al.
patent: 6570119 (2003-05-01), Marcher
patent: 6696132 (2004-02-01), Beall et al.
patent: 6803087 (2004-10-01), Brew et al.
patent: 6843822 (2005-01-01), Beall et al.
patent: D505194 (2005-05-01), Komori et al.
patent: 7247184 (2007-07-01), Frost
patent: 2005/0016140 (2005-01-01), Komori et al.
patent: 2005/0016141 (2005-01-01), Hong et al.
patent: 2005/0066639 (2005-03-01), Frost
patent: 2005/0076627 (2005-04-01), Itou et al.
patent: 2005/0166562 (2005-08-01), Beall et al.
patent: 2005/0191461 (2005-09-01), Kasai et al.
patent: 2005/0274097 (2005-12-01), Beall et al.
patent: 10037403 (2002-02-01), None
patent: 1495791 (2005-01-01), None
patent: 1 502 639 (2005-02-01), None
patent: 1568406 (2005-08-01), None
patent: 2789327 (1999-02-01), None
patent: 1172155 (2003-04-01), None
patent: D1172155 (2003-04-01), None
patent: 1189138 (2003-11-01), None
patent: 1189139 (2003-11-01), None
patent: 1189428 (2003-11-01), None

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