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:
Jan. 23, 1990
Filed:
Sep. 26, 1988
Patrik Andersson, Vasterfarnebo, SE;
Anders Wallander, Vasteras, SE;
ABB Atom AB, Vasteras, SE;
Abstract
To allow manipulation of the fuel assemblies in a nuclear reactor, the assemblies are provided with a lifting handle at the upper end. A top support is provided at the lifting end of the fuel assembly to determine the spacing. An upper end portion of the fuel channel for the fuel assemblies surrounds a lifting plate or the like for the fuel rods, where the lifting plate and handle together may form a lifting member cast in one piece. To simplify manipulation of the fuel assemblies during fuel inspection, for instance, and reduce the risk of losing small parts, a top support lock (1) for the top support (2) has been constructed in the handle (3). When assembling the top support (2), the top support lock (1) is moved to its open position and the angle-piece ends (5) are inserted through recesses (8) in the fuel channel (7) up to the openings (4) in the handle (3). When the angle-piece ends (5) of the top support are in place, the holes (6) in the angle-piece ends will be immediately opposite the holes (4) in the handle (3) and the top support lock (1) is moved to its closing position by a spring (13). With a good fit between the top support and the openings in the fuel channel and in the handle, the top support will be accurately positioned and firmly secured. When the top support is to be dismantled, the top support lock (1) is moved to its open position and the top support (2) is removed from openings (4, 8) in the handle and fuel channel.