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:
Feb. 17, 2015
Filed:
Jun. 15, 2012
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 top nozzle is provided. The top nozzle can include a coupling plate, a perimeter wall and a hold-down spring unit. The coupling plate can be coupled to a guide thimble of the nuclear fuel assembly. The perimeter wall can protrude upwards from the perimeter of the coupling plate. A spring clamp can be provided on the upper surface of the perimeter wall. The hold-down spring unit can be mounted to the upper surface of the perimeter wall in such a way to couple a corresponding end of the hold-down spring unit to the spring clamp. A fastening pin hole can be vertically formed through an upper surface of the spring clamp. A spring insert hole into which the hold-down spring unit can be inserted and formed by electro-discharge machining in an insert direction of the hold-down spring.