Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1987-09-28
1989-05-23
Kittle, John E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428138, 428901, 156 89, 264 56, B32B 310, C04B 3334, C04B 3332
Patent
active
048330000
ABSTRACT:
A method of preparing ceramic monolithic structures with an internal cavity and passageways is described. A thin sheet of a ceramic material is formed by spreading the material on a glass plate with a doctor blade. Individual sheets of the material are cut or punched to form predetermined holes, channels or various shapes therein. These individual sheets are then stacked to form a layered structure. A supporting media such as paraffin wax is injected into the holes and channels to completely fill them with the media. The layered structure is then pressed by unipressing and/or isostatic pressing followed by a prefiring step to remove the supporting media. Once the supporting media had been completely removed, the layered structure is then sintered to form a monolithic structure containing precise predetermined internal cavity and passageways.
REFERENCES:
patent: 3179535 (1965-04-01), Comton
patent: 3940301 (1976-02-01), Straw et al.
patent: 4026746 (1977-05-01), Straw
patent: 4610741 (1986-09-01), Mase et al.
Assmus Richard C.
Trickett Elizabeth A.
Ericson Ivan L.
GTE Laboratories Incorporated
Kittle John E.
Ryan P. J.
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