Patents by Inventor Jean-Francois Tocheport

Jean-Francois Tocheport 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).

  • Device for automatically blocking air passages in cylinder, specifically for support cylinders and compensation mantles
    Patent number: 6283026
    Abstract: The present invention relates to an automatic closing device for air passage holes in a support cylinder, or compression sleeves used in printing applications. The automatic closing devices of the invention are inserted into the thickness of the wall of the cylinder and comprises a support, a seat with an interior passage and a valve mobile in translation in the support. The support is capable of assuming two positions, the first in which the valve comes into tight contact with the aforementioned seat and the other in which it is retracted so as to allow for a passage.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: September 4, 2001
    Assignee: Polybribron Technologies S.A.
    Inventors: Jean-Francois Tocheport, Jean Francille