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. 16, 2025
Filed:
Oct. 03, 2019
Framatome Inc., Lynchburg, VA (US);
Ryan Melcher, Lynchburg, VA (US);
Charles Graves, Forest, VA (US);
Abstract
A nuclear reactor head () comprising a vessel top head (), a penetration () extending through the vessel top head () along a penetration axis (B) for allowing passage of a control shaft () of a control rod drive mechanism () through the vessel top head () and to a corresponding control guide tube () of the nuclear reactor (), the penetration () comprising a penetration tube () extending through the vessel top head () and a thermal sleeve () extending inside the penetration tube () and coaxially with the penetration tube () with an axial play between the thermal sleeve () and the penetration tube (), wherein the nuclear reactor head further comprises a spacer () attached to a lower end of the thermal sleeve () for maintaining minimal spacing with the upper end of the corresponding control rod guide tube ().