Patents by Inventor Alain Gervais

Alain Gervais 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).

  • Process and apparatus for measuring rheological properties of semi-solid bodies by harmonic shear in rotation
    Patent number: 4535621
    Abstract: A process and apparatus for measuring rheological properties of semi-solid bodies. The apparatus comprises a vessel (4) containing the body (5 ) to be tested, a measuring head (3) immersed in the vessel (4) in the middle of the body, and a drive for driving the head (3) in rotation through the intermediacy of an axle. The driver imparts a sinusoidal or pseudo-sinusoidal rotational motion to the axle (2), a torque sensor (7) and an angle sensor (8) which are mounted on the axle (2) and are both connected to a processing device for processing information, such as a device for processing signals (9) connected to a microcomputer (10).
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: August 20, 1985
    Assignee: Institut National de la Recherche Agronomique
    Inventors: Alain Gervais, Daniel Vermeire, Olivier Cerf, Jacques Toux