Patents by Inventor Esko Martikainen

Esko Martikainen 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).

  • Publication number: 20180325008
    Abstract: The invention relates to a sieve 100 for stone picking stones from soil, said sieve in the orientation intended for use comprising: a number of bars 2,2?,2?,2??, wherein each bar is extending in a longitudinal direction between a lower end 4 configured to be at least partly submerged in soil, and an upper end 6; wherein each said bar comprises a leading surface 8 extending a distance L from a first edge 10 to a second edge 12 of said leading surface of said bar; wherein each said bar comprises a trailing surface 14; wherein in respect of two specific adjacent bars 2,2?,2?,2??, preferably in respect of any two adjacent bars, the geometry of the bars and the sieve is configured in such a way that the smallest distance D between said two adjacent bars is being present at the leading surface of said two adjacent bars. Also provided is a stone picking device comprising a sieve according to the invention.
    Type: Application
    Filed: November 4, 2016
    Publication date: November 15, 2018
    Inventors: Esko Martikainen, Adam Michalak