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. 08, 2007
Filed:
Jun. 06, 1995
Osamu Yokomizo, Naka-gun, JP;
Yuichiro Yoshimoto, Hitachi, JP;
Yoshiyuki Kataoka, Naka-gun, JP;
Shinichi Kashiwai, Hitachi, JP;
Yasuhiro Masuhara, Hitachi, JP;
Akio Tomiyama, Hitachi, JP;
Akihito Orii, Hitachi, JP;
Kotaro Inoue, Toukai-mura, JP;
Takaaki Mochida, Hitachi, JP;
Tatsuo Hayashi, Hitachi, JP;
Osamu Yokomizo, Naka-gun, JP;
Yuichiro Yoshimoto, Hitachi, JP;
Yoshiyuki Kataoka, Naka-gun, JP;
Shinichi Kashiwai, Hitachi, JP;
Yasuhiro Masuhara, Hitachi, JP;
Akio Tomiyama, Hitachi, JP;
Akihito Orii, Hitachi, JP;
Kotaro Inoue, Toukai-mura, JP;
Takaaki Mochida, Hitachi, JP;
Tatsuo Hayashi, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A resistance member (e.g., fuel holding portion of the lower tie plate) is provided at the lower end of the fuel assembly. Provision is made of a coolant ascending path in which said water rods have coolant inlet ports that are open in a region lower than the resistance member to upwardly guide the coolant, and a coolant descending path which has a coolant delivery port that is open in a region higher than the resistance member to downwardly guide the coolant. The coolant ascending path and the coolant descending path are communicated with each other at their upper end portions.