Patents by Inventor Hans Petter Langbakk

Hans Petter Langbakk 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).

  • Seed drilling implement
    Patent number: 5974987
    Abstract: There is disclosed a seed drilling implement (10) which comprises a frame (11), a coupling device (12) at the forward end of the frame (11), drilling elements (13) mounted on the frame (11) at or near the rear end of the frame, coulters (14) mounted on the frame (11) forwardly of the respective drilling elements (13), forward packer elements (15) mounted on the frame (11) forwardly of the coulters (14) and arranged at least partly to support the frame (11) in order to control the operating depths of the coulters (14) and the drilling elements (13), and an associated rear packer element (16) mounted rearwardly of the respective drilling element (13), and arranged to exert a soil-packing operation over each seeded row formed by the drilling element.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 2, 1999
    Assignee: Kverneland Klepp AS
    Inventors: Hans Petter Langbakk, Torstein Salte