Patents by Inventor Jacquy-Pierre Laffargue

Jacquy-Pierre Laffargue 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).

  • Apparatus for pneumatically withdrawing fine material from a silo container
    Patent number: 3933394
    Abstract: Apparatus for withdrawing fine material from a silo having a base sloped toward a discharge zone comprises a chamber within which an air feed nozzle registers with the lower end of a conveyor conduit which extends upwardly out of the silo. Fine material is admitted to the chamber via apertures and is entrained in air passing from the nozzle into the conduit.
    Type: Grant
    Filed: October 4, 1974
    Date of Patent: January 20, 1976
    Assignee: Polysius AG
    Inventors: Hans Klein, Gerhard Balzau, Jacquy-Pierre Laffargue