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:
Dec. 20, 1994
Filed:
Jul. 14, 1993
Erhard Friedrich, Eckental, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A pressurized water reactor fuel assembly includes a can with a flange engaging an upper surface of an upper tie plate through a bore and carrying a collar projecting beyond a lower surface of the upper tie plate and having an external thread. A bush at an upper end of a guide tube has an internal thread and an end surface which abuts the lower surface of the upper tie plate. A profile at the periphery of the bush engages a corresponding counter profile of the lower surface of the upper tie plate. This removable screw connection, which is also suitable for coolant tubes of boiling-water fuel assemblies, requires little of the cross-sectional area required for coolant bores and no individual tolerance equalization of the screw connections of an individual plate.