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. 15, 2014
Filed:
Feb. 21, 2008
Yuuji Saito, Yokohama, JP;
Mitsuharu Nakamura, Yokohama, JP;
Makoto Ueda, Yokohama, JP;
Yoshinori Katayama, Yokohama, JP;
Motoji Tsubota, Fujisawa, JP;
Satoko Tajima, Yokohama, JP;
Yoshiji Karino, Kamakura, JP;
Kenichi Yoshioka, Yokohama, JP;
Kosaku Tsumita, Tokyo, JP;
Yuuji Saito, Yokohama, JP;
Mitsuharu Nakamura, Yokohama, JP;
Makoto Ueda, Yokohama, JP;
Yoshinori Katayama, Yokohama, JP;
Motoji Tsubota, Fujisawa, JP;
Satoko Tajima, Yokohama, JP;
Yoshiji Karino, Kamakura, JP;
Kenichi Yoshioka, Yokohama, JP;
Kosaku Tsumita, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A control rod for nuclear reactors includes four wings including neutron absorbers containing hafnium, a front end structural member which has a cross shape in cross section and includes brackets bonded to the leading ends of the wings, and a terminal end structural member which has a cross shape in cross section and includes brackets bonded to the tailing ends of the wings. The four wings are bonded to a wing-bonding member including a cross-shaped center shaft so as to form a cross shape. The front end structural member and the wing-bonding member are made of a zirconium alloy. The wings include neutron-absorbing plates having neutron-absorbing portions and each have an outer surface which is opposed to a fuel assembly and at which a hafnium-zircaloy composite member covered with zircaloy is disposed. The neutron-absorbing plates are opposed to each other with trap spaces disposed therebetween.