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:
May. 15, 1990
Filed:
Mar. 21, 1988
Yasuhiro Masuhara, Katsuta, JP;
Soamu Yokomizo, Ibaraki, JP;
Kotaro Inoue, Ibaraki, JP;
Sadao Uchikawa, Katsuta, JP;
Motoo Aoyama, Hitachi, JP;
Junichi Yamashita, Hitachi, JP;
Yuichiro Yoshimoto, Hitachi, JP;
Tetsuo Yasuda, Hitachi, JP;
Hiromasa Hirakawa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A fuel assembly including a plurality of fuel rods and water rods. The fuel rods are arranged with a predetermined pitch and two water rods are disposed adjacent to each other in a diagonal direction of the fuel assembly. More particularly, the fuel rods are arranged in a lattice of nine rows by nine columns and the two water rods are disposed inside a region corresponding to a space sufficient for disposing seven fuel rods at the center of the fuel assembly. Each of the water rods has an outer diameter greater than the pitch of the fuel rods.