Patents by Inventor Michel Cayment

Michel Cayment has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for replacing an adaptor for penetrating the vessel head of a nuclear reactor
    Patent number: 5432828
    Abstract: The replacement is performed from a repair area located above the convex face (1a) of the head. The adaptor to be replaced is machined, after dismounting its drive mechanism (13) and a thermal sleeve (4), by inserting an appropriate tool (14) via the upper end of the adaptor (3') to be replaced. Machining of the lower portion of the adaptor and of a portion of the weld of this adaptor, the machining of a narrow bevel in the weld of the adaptor to be replaced, reboring of the remaining portion of the adaptor to be replaced (3') inside the head (1), extraction of the adaptor, the installation, by cold shrink-fitting, of a replacement adaptor and the welding of the replacement adaptor are performed in succession.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: July 11, 1995
    Assignee: Framatome
    Inventors: Michel Cayment, Michel Batistoni