Patents by Inventor Walter Pirrung

Walter Pirrung 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).

  • Patent number: 5657934
    Abstract: Apparatus for granulating strand materials including a stationary knife, a rotatable knife, and a drawing-in device. Part of the housing is pivotable to enable the drawing-in device to be easily removed for maintenance. An oblong hole on the housing is used to locate the drawing-in device.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: August 19, 1997
    Assignee: Rieter Automatik GmbH
    Inventors: Walter Pirrung, Berthold Glaab, Laurenz Hohm, Helmuth Meidhof, Guenther Wolf
  • Patent number: 5628465
    Abstract: The invention relates to a granulating device for strand materials comprising a pull-in device for feeding the strand material, conducted through an inlet shaft, and transporting it to a knife roll for cutting up the strand material into granulate, said pull-in device having a pull-in roll, and a counter-roll, of which rolls at least one is driveable and both form a inter-roll gap for pulling-in the strand material. A proximity-type switching element is disposed in the region of the inlet shaft, particularly in front of the entrance thereof, said proximity-type switching element raising, when actuated, the setting of the inter-roll gap and increasing the inter-roll gap to such a width that the further pulling-in of the strand material is abruptly stopped.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: May 13, 1997
    Assignee: Rieter Automatik GmbH
    Inventors: Peter Locker, Walter Pirrung
  • Patent number: 5595770
    Abstract: The invention relates to a granulation apparatus for strand material having pull-in apparatus for gripping the strand material and transporting it to a counter knife, a knife roll cooperating with the counter knife for cutting the strand material into granulate, and a housing accomodating the pull-in apparatus, the counter knife and the knife roll, wherein a motor driving the knife roll and the pull-in apparatus is arranged beside the housing and is connected by means of a drive axle to the rotating components contained in the housing, and wherein the motor and the housing are mounted on a common support.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: January 21, 1997
    Assignee: Rieter Automatik GmbH
    Inventors: Walter Pirrung, Berthold Glabb, Laurenz Hohm, Helmuth Meidhof, Gunther Wolf