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:
Jul. 02, 2013
Filed:
Mar. 26, 2010
Joon Kyoo Park, Daejon, KR;
Jin Seok Lee, Daejon, KR;
Kyeong Lak Jeon, Daejon, KR;
Jung Min Suh, Daejon, KR;
Gi-jun Gwon, Daejon, KR;
Nam Gyu Park, Daejon, KR;
Kyong BO Eom, Daejon, KR;
Jin Sun Kim, Daejon, KR;
Dong Geun Ha, Daejon, KR;
Kyoung Joo Kim, Daejon, KR;
Joon Kyoo Park, Daejon, KR;
Jin Seok Lee, Daejon, KR;
Kyeong Lak Jeon, Daejon, KR;
Jung Min Suh, Daejon, KR;
Gi-Jun Gwon, Daejon, KR;
Nam Gyu Park, Daejon, KR;
Kyong Bo Eom, Daejon, KR;
Jin Sun Kim, Daejon, KR;
Dong Geun Ha, Daejon, KR;
Kyoung Joo Kim, Daejon, KR;
Korea Nuclear Fuel Co., Ltd., Daejeon, KR;
Abstract
A hold-down spring unit for a top nozzle of a nuclear fuel assembly. The hold-down spring unit is coupled to the upper end of the top nozzle of the nuclear fuel assembly. The hold-down spring unit includes a first spring which provides a hold-down force upon the nuclear fuel assembly under start-up conditions and hot full power conditions of a nuclear reactor, and a second spring which provides an additional hold-down force upon the nuclear fuel assembly under start-up conditions of the nuclear reactor. The hold-down margin under start-up conditions and hot full power conditions is reduced, thus enhancing the mechanical and structural stability of the nuclear fuel assembly.