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:
Jan. 13, 1981
Filed:
Sep. 23, 1977
Applicant:
Inventors:
Renzo Takeda, Yokohama, JP;
Kunitoshi Kurihara, Sagamihara, JP;
Masaaki Yamamoto, Kokubunji, JP;
Sadao Uchikawa, Kawasaki, JP;
Michiro Yokomi, Ibaraki, JP;
Junichi Yamashita, Hitachi, JP;
Takanori Shimoshige, Hitachi, JP;
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21C / ;
U.S. Cl.
CPC ...
176 54 ; 176 68 ; 176 76 ; 176 78 ;
Abstract
A construction of boiling water reactor core having a plurality of fuel assemblies. Some of fuel assemblies have an infinite multiplication factor which is larger at their upper regions than at their lower portions, so that the effective multiplication factor of the reactor core is larger at the upper portion than at the lower portion of the reactor core under an equal condition. Consequently, a relatively flat axial power distribution is established even under an uneven axial void distribution.