Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like
Reexamination Certificate
2005-12-29
2009-10-06
Xu, Ling (Department: 1794)
Stock material or miscellaneous articles
Structurally defined web or sheet
Honeycomb-like
C428S118000, C428S134000, C428S188000, C428S192000, C428S304400
Reexamination Certificate
active
07597948
ABSTRACT:
A ceramic honeycomb structure having reduced stress joints between its webs and skin is provided. The webs define a plurality of cells, and the skin surrounds the plurality of webs and has an inner wall that is connected to peripheral ends of the webs such that a plurality of angularly spaced wall joints are formed. Portions of the inner wall disposed between the angularly spaced wall joints include continuous arches. Each of the arches includes a curved central portion that terminates on either end on curved corner portions that are more sharply curved than the central portion. The arches eliminate sharp angles faces between the peripheral ends of the webs and the inner wall of the skin, thereby reducing stress concentrations in the interface between the webs and the skin. The arches also strengthen the skin, which allows it to be made thinner, thereby reducing thermally induced stresses in the joints between the webs and skin.
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patent: 2005/0186389 (2005-08-01), Aoki
Corning Incorporated
Homa Joseph M.
Xu Ling
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