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:
Apr. 01, 2003
Filed:
Mar. 11, 2002
Applicant:
Inventors:
Zia Abdullah, Federal Way, WA (US);
John Peter Gorog, Kent, WA (US);
Assignee:
Weyerhaeuser Company, Federal Way, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
F27D 1/00 ;
U.S. Cl.
CPC ...
F27D 1/00 ;
Abstract
A refractory vessel comprising a metal shell having a generally cylindrical portion and an upper hemispherical dome. A refractory liner has a cylindrical portion spaced inwardly from the cylindrical portion of the metal shell and a hemispherical portion spaced inwardly from the dome. The hemispherical portion has a plurality of layers of refractory brick forming successively higher and lesser diameter rings. At least a portion of the rings have mating keys and keyways to restrain the layers of bricks in a vertical direction.