Patents by Inventor Heinrich Hemker

Heinrich Hemker 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: 4928460
    Abstract: A self-propelling field chopping machine comprises a chassis, a front cutting mechanism, a transporting channel provided with a throwing out pipe having a downstream end, a rotatable conveyor arranged upstream of the transporting channel and formed as a rotatable conveyor drum provided with paddels, a threshing device arranged between the cutting mechanism and the rotatable conveyor drum and operating in accordance with an axial flow system, a wind sieve device located at the end of the throwing pipe so that a grain-chaff mixture without straw is supplied to the wind sieve device, and a grain tank located under the wind sieve device.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: May 29, 1990
    Assignee: Claas OHG
    Inventors: Dirk Bruer, Franz Heidjann, Heinrich Hemker
  • Patent number: 4903470
    Abstract: A self-propelling harvester thresher comprises a conveyor, a two-part cutting mechanism having two cutting mechanism halves which are turnable substantially in a horizontal plane between a working position and a transporting position, elements allowing the turning of the cutting mechanism halves and including two turnable supports and a joint vertically extending hinge axle. The cutting mechanism halves are each connected through a respective one of the turnable supports with the inclined conveyor and also are connected with one another by the hinge axle.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: February 27, 1990
    Assignee: Claas Ohg
    Inventors: Heinrich Hemker, Heinrich Ostrup
  • Patent number: 4884993
    Abstract: A harvester thresher comprises a chassis, a housing, a threshing and separating mechanism operating in accordance with the principle of a tangential flow and including a threshing drum and a threshing basket, a shaker located after the threshing mechanism as considered in direction of an agricultural product flow, and a threshing and separating device located after the shaker in the housing, operating in accordance with the principle of axial flow and including a rotor and a casing.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: December 5, 1989
    Assignee: Claas Ohg
    Inventors: Heinrich Hemker, Franz Heidjann