Patents Assigned to GIERKINK EXPLOITATIE B.V.
  • Patent number: 10327395
    Abstract: The invention relates to an improved head for harvesting of trees. In particular, the head according to the invention is an improvement of a head for harvesting of trees as disclosed in European Patent EP2515628, which state of art is hereby incorporated by reference. In the known head, the balance between the saw pressure and the saw speed is controlled by the oil pressure at the inlet port of the hydraulic motor. This has the drawback that the saw pressure is depending on the saw speed. It is the aim of the invention to provide an improved head for harvesting trees, wherein the saw pressure is constant and independent of the saw speed.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: June 25, 2019
    Assignee: GIERKINK EXPLOITATIE B.V.
    Inventor: Michel Bernardus Johanna Gierkink