Patents by Inventor Hilmar Fenzau

Hilmar Fenzau 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).

  • Guard for the nips of rolls in calenders and like machines
    Patent number: 5042373
    Abstract: A guard at the inlet side of the nip of two rolls in a calender has a hollow support for two blocking devices with movable sections extending close to the peripheral surfaces of the rolls to prevent injury to the fingers of an operator. The support defines one or more channels for steam or for another fluid medium which is discharged through one or more rows of ports to moisturize a running web of paper, foil or textile material or to dry, heat or cool the web and/or the rolls.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: August 27, 1991
    Assignee: Kleinewefers GmbH
    Inventors: Hilmar Fenzau, Franz Kayser, Jurgen Schlunke, Hartmut Wilke
  • Calender with individually supported rolls and constant nip alignment
    Patent number: 4924772
    Abstract: A calender wherein the intermediate rolls of a stack of rolls are mounted on pairs of levers pivotable on carriages which are movable up and down in vertical ways provided therefor in the frame. This renders it possible to change the levels of the intermediate rolls without any or without appreciable shifting of the centers of nips of neighboring rolls from a common vertical plane. The carriages are suspended on composite feed screws which can be rotated to move neighboring carriages nearer to or further away from each other.
    Type: Grant
    Filed: January 21, 1988
    Date of Patent: May 15, 1990
    Assignee: Kleinwefers GmbH
    Inventors: Jurgen Schlunke, Franz Kaiser, Hilmar Fenzau