Patents by Inventor Per Naumburg

Per Naumburg 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).

  • Isolated insertion chute for suction-operated garbage disposal systems
    Patent number: 5004377
    Abstract: The invention relates to a separate insertion chute (103) of the type which at spaced intervals are connected to an underground suction conveying conduit (106) communicating with a refuse suction system, the upper end above ground of each chute being provided with a closable insertion opening and the lower end below ground of each chute being connected to the suction conveying conduit. According to the invention, the insertion chute (103) consists of an upper chute portion (103a) which at its lower end is provided with a connecting flange (108a), and a lower chute portion (103b) which at its upper end is provided with a connecting flange (108e), said lower chute portion (103b) being received in a branching (109) extended from the suction conveying conduit (106), said branching likewise being provided with a connecting flange (108g) at its upper end.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: April 2, 1991
    Inventor: Per Naumburg