Patents by Inventor Lucas Hiltbrunner

Lucas Hiltbrunner 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).

  • Feed chute for fiber tufts
    Patent number: 5913642
    Abstract: A flap is disposed across the opening between an expansion chamber and an exhaust air duct to control the delivery of fiber tuft-laden air into a feed chute or chamber. The flap has two wings which pivot about a common pivot axis whereby as one wing increases the flow cross section from the expansion chamber, the other wing reduces the flow cross section. A pressure difference produces forces on both wings simultaneously.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: June 22, 1999
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Rolf Boehler, Lucas Hiltbrunner