Patents by Inventor Robert Huart

Robert Huart 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).

  • Filter tube for drain purposes
    Patent number: 4260284
    Abstract: A filter tube for drain purposes provided with openings debouching at its outer surface, said openings being adapted to be connected to a sub-atmospheric source through at least one discharge channel in the tube. At least one flush-channel is formed in the tube, which is fully separated from the discharge channel(s) and which is adapted to be connected to a source of pressure fluid at or adjacent the one tube end, while at or adjacent the other tube end an outlet for said pressure fluid is formed.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: April 7, 1981
    Assignee: DHV Raadgevend Ingenieursbureau BV
    Inventor: Robert Huart