Plugged honeycomb structure

Details Plugged honeycomb structure Plugged honeycomb structure

2011-07-05

2011-07-05

Baldwin, Gordon R (Department: 1784)

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

C428S117000, C055S523000

Reexamination Certificate

active

07972677

ABSTRACT:
There is provided a honeycomb structure including: porous partition walls separating and forming a plurality of cells extending between two end faces, and an outer peripheral wall formed unitarily with the partition walls. The cells include outermost peripheral portion partial cells each locating in an outermost peripheral portion of the honeycomb structure and having an incomplete cell cross section, a part of which is brought into contact with the outer peripheral wall, and complete cells each having a complete cell cross section other than the outermost peripheral portion partial cells. The complete cells and the outermost peripheral portion partial cells having plugging portions formed on one end portion so that an entire end face of the honeycomb structure shows a checkerwise plugging pattern, and the depth of the plugging portions in the outermost peripheral partial cells is smaller than that of the plugging portions in the complete cells.

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