Patents by Inventor Yrjö Leinonen

Yrjö Leinonen 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: 7523834
    Abstract: The invention relates to a harvester crane, which includes a set of booms, which are attached by means of a pedestal and rotating device to a chassis machine, in which the set of booms includes a main boom, which is pivoted at its lower end by a lower pivot to the pedestal; and an articulated boom, which is pivoted by an upper pivot to the opposite end of the main boom and which extends its path mainly forward from the main boom; operating devices, i.e. a lift device and a transfer device, operating the booms. The lower pivot of the main boom is located low down near to the rotating device and the pedestal is fork-shaped, the lower arm and the lift cylinder being located at least partly inside it.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: April 28, 2009
    Assignee: Ponsse Oyj
    Inventor: Yrjö Leinonen