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. 24, 2012
Filed:
Jan. 08, 2008
Joon-kyoo Park, Daejeon, KR;
Joon-hyung Choi, Daejeon, KR;
Kyu-tae Kim, Daejeon, KR;
Jung-min Suh, Daejeon, KR;
Shin-ho Lee, Daejeon, KR;
Nam-gyu Park, Daejeon, KR;
Kyong-bo Eom, Daejeon, KR;
Jin-sun Kim, Daejeon, KR;
Jin-seok Lee, Daejeon, KR;
Seong-ki Lee, Daejeon, KR;
Joon-kyoo Park, Daejeon, KR;
Joon-hyung Choi, Daejeon, KR;
Kyu-Tae Kim, Daejeon, KR;
Jung-min Suh, Daejeon, KR;
Shin-ho Lee, Daejeon, KR;
Nam-gyu Park, Daejeon, KR;
Kyong-bo Eom, Daejeon, KR;
Jin-sun Kim, Daejeon, KR;
Jin-seok Lee, Daejeon, KR;
Seong-ki Lee, Daejeon, KR;
Korea Nuclear Fuel Co., Ltd., Daejeon, KR;
Abstract
The present invention relates to a top nozzle for a nuclear fuel assembly that has a two-stage elastic section such that a pushing force against the axial movement of the nuclear fuel assembly under normal conditions is optimized and at the same time a suppressing force against a drastic uplifting force of the nuclear fuel assembly under transient conditions is strengthened, and that lowers the elastic coefficients of the springs operating under normal conditions more than those of existing coil springs, thereby providing an optimal pushing force against the nuclear fuel assembly.