Honeycomb structure

Details Honeycomb structure Honeycomb structure

2008-07-14

2009-12-15

Speer, Timothy M (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

C428S117000

Reexamination Certificate

active

07632558

ABSTRACT:
There is provided a honeycomb structure which is useful as a trapping filter for exhaust gas, especially as a DPF for a diesel engine and capable of effectively inhibiting defects such as a crack due to thermal stress from being generated upon use and regeneration. The honeycomb structure is provided with a honeycomb segment bonded body obtained by unitarily bonding a plurality of honeycomb segments at bonded faces via a bonding material layer and the outer periphery coat layer and has a structure having a plurality of cells functioning as fluid passages disposed in parallel with one another in a direction of a central axis. The honeycomb structure is characterized in that a bonding cross portion where two or more bonding material layers cross has a smaller thermal capacity than those of bonding portions other than the bonding cross portion.

REFERENCES:
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patent: 2004/0045267 (2004-03-01), Ichikawa et al.
patent: 2005/0180898 (2005-08-01), Yamada
patent: 2007/0059483 (2007-03-01), Fujita et al.
patent: U-02-117033 (1990-09-01), None
patent: A-2001-170426 (2001-06-01), None
patent: A-2004-262669 (2004-09-01), None
patent: WO 03/084640 (2003-10-01), None

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