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:
Aug. 04, 1981
Filed:
Dec. 18, 1978
Theodor Hensolt, Nuremberg, DE;
Peter Rau, Mittelehrenbach, DE;
Kraftwerk Union Aktiengesellschaft, Mulheim, DE;
Abstract
In a fuel assembly for gas-cooled nuclear reactors, having a plurality of fuel rods fastened to a mounting plate formed with through bores serving as passageways for a coolant, the fuel rods having respective perforated end caps by which the fuel rods are connected to a fission-gas exhaust system, the end caps being formed with a respective external thread and being threadedly secured thereby in the mounting plate and simultaneously connected to the fission-gas exhaust system through channels formed in the mounting plate, the mounting plate and the end caps having surfaces formed thereon having a residual roughness of from 4 to 16 microns and being sealingly pressable against one another by the threaded connection between the end caps and the mounting plate, includes a threaded sleeve serving as means for threadedly securing the respective end caps to the mounting plate, the threaded sleeve being provided with means for gripping the sleeve by a tool and being formed with an internal thread in threaded engagement with the external thread of the respective end caps and an external thread in threaded engagement with a corresponding internal thread formed in the mounting plate, the external thread of the threaded sleeve having a greater pitch than the internal thread thereof.