Patents by Inventor Jyrki HYYRÖNMÄKI

Jyrki HYYRÖNMÄKI 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).

  • Tool bushing, breaking hammer and mounting method
    Patent number: 11478914
    Abstract: A tool bushing of a breaking hammer, a tool bushing arrangement, a breaking hammer and a method of mounting a tool bushing of a breaking hammer are disclosed. The tool bushing is a sleeve-like piece having a multi-shouldered outer surface with three or more successive cylindrical portions. The cylindrical portions have different diameters that match with corresponding surfaces of a bushing housing when the tool bushing is mounted. Diameters of the bushing and the bushing housing are dimensioned so that friction forces are generated when the bushing is assembled.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: October 25, 2022
    Assignee: Sandvik Mining and Construction Oy
    Inventor: Jyrki Hyyrönmäki
  • TOOL BUSHING, BREAKING HAMMER AND MOUNTING METHOD
    Publication number: 20190344417
    Abstract: A tool bushing of a breaking hammer, a tool bushing arrangement, a breaking hammer and a method of mounting a tool bushing of a breaking hammer are disclosed. The tool bushing is a sleeve-like piece having a multi-shouldered outer surface with three or more successive cylindrical portions. The cylindrical portions have different diameters that match with corresponding surfaces of a bushing housing when the tool bushing is mounted. Diameters of the bushing and the bushing housing are dimensioned so that friction forces are generated when the bushing is assembled.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 14, 2019
    Inventor: Jyrki HYYRÖNMÄKI