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:
Sep. 05, 1978
Filed:
May. 26, 1976
Applicant:
Inventors:
Kiyozumi Hayashi, Chiba, JP;
Kenji Sato, Zushi, JP;
Assignee:
Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21C / ;
U.S. Cl.
CPC ...
176 68 ; 176 79 ;
Abstract
A nuclear fuel rod is made up of a stack of pellets of fuel material and a cladding or sheathing tube is provided. A metallic supporting structure is interposed between the pellet stack and an end plug of said cladding tube. The supporting structure can maintain the original shape under the normal operating reactor conditions, but when an excess stress is applied to the supporting structure, a mechanical break is produced in the supporting structure to reduce its supporting length, otherwise the excess stress would be exerted on said cladding tube in the vicinity of the end plug joints and might cause failure of the fuel rod.