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:
Jun. 25, 1996
Filed:
Oct. 11, 1994
Applicant:
Inventor:
Christian Valadon, Paris, FR;
Assignee:
Framatome, Paris la Defense, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F22B / ;
U.S. Cl.
CPC ...
122 33 ; 122381 ;
Abstract
Tube lane blocking is accomplished by a plurality of removable blocks which can be fitted and extracted from the central region, in the inner casing of the steam generator. The blocks are superposed in a stack resting on the tube plate, and are immobilized at their ends by a holding fixture. An anti-liftoff blocking member at opposite ends of the blocks prevents them from being lifted off the tube plate. When maintenance or repair of the tube plate is required, the holding fixture and anti-liftoff blocking member can be withdrawn in order to permit access to the tube plate and the adjacent tube bundle.