Patents by Inventor Marcel O. Pillon

Marcel O. Pillon 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).

  • Support jack more particularly adapted to support a tool holder of a machine tool and in particular of a polishing machine
    Patent number: 4197786
    Abstract: The support jack comprises a cylinder and a piston which define therebetween a variable-volume chamber. An inlet aperture and an outlet aperture for control fluid are provided for the chamber. Escape passageways are provided in evenly-spaced relation about the rod of the piston and put the chamber in communication with the annular space between the fixed and moving component parts of the jack and open radially onto said space. These passageways create pressure drops which are higher than the pressure drops due to the annular space.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: April 15, 1980
    Assignee: Pont-A-Mousson S.A.
    Inventor: Marcel O. Pillon