The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 1987
Filed:
Sep. 18, 1984
Tadaaki Matsuhisa, Kasugai, JP;
Kiminari Kato, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
Disclosed herein is a ceramic honeycomb structural body which has cells of a rectangular section in which the pitch ratio between the short side and the long side of the cells is substantially 1:.sqroot.3. A method of manufacturing a ceramic honeycomb structural body and a die for extruding a ceramic honeycomb structural body are also disclosed. The die comprises molding slits having a profile corresponding to a sectional profile of a ceramic honeycomb structural body and ceramic raw batch material supply holes through which a ceramic raw batch material is supplied to the molding slits, wherein the pitch ratio between the short side and the long side of the molding slits is substantially 1:.sqroot.3. Further, a rotary regenerator type ceramic heat exchanger composed of the ceramic honeycomb structural body is disclosed.