Patents by Inventor Mariano Gaston Rousseau Portalis

Mariano Gaston Rousseau Portalis 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).

  • Manually operable vacuum milking system
    Patent number: 3949705
    Abstract: A vacuum milking machine system is supplied with a constant source of vacuum by a pump consisting of a free piston contained in a cylinder which can be manually rotated about a transverse axis, causing the free piston to fall under the influence of gravity as each end of the cylinder reaches the upper position. The system also includes a vacuum reserve tank and teat cups provided with automatic valves to prevent loss of vacuum when not in use.
    Type: Grant
    Filed: December 11, 1974
    Date of Patent: April 13, 1976
    Inventor: Mariano Gaston Rousseau Portalis