Patents by Inventor Harri MOILANEN

Harri MOILANEN 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).

  • Breaking hammer and method of supporting percussion piston
    Patent number: 11828137
    Abstract: A hydraulic breaking hammer and method of supporting a percussion piston is provided. The breaking hammer includes a percussion device provided with a reciprocating piston. The piston is supported on a frame at its end portions by a first piston bearing element and a second piston bearing element. The second piston bearing element includes a collar sealing element facing towards a working collar of the piston. The piston bearing elements are easily mountable and dismountable separate components.
    Type: Grant
    Filed: February 10, 2022
    Date of Patent: November 28, 2023
    Assignee: Sandvik Mining and Construction Oy
    Inventors: Mika Oksman, Jyrki Nissinen, Juhani Laine, Harri Moilanen
  • BREAKING HAMMER AND METHOD OF SUPPORTING PERCUSSION PISTON
    Publication number: 20220251904
    Abstract: A hydraulic breaking hammer and method of supporting a percussion piston is provided. The breaking hammer includes a percussion device provided with a reciprocating piston. The piston is supported on a frame at its end portions by a first piston bearing element and a second piston bearing element. The second piston bearing element includes a collar sealing element facing towards a working collar of the piston. The piston bearing elements are easily mountable and dismountable separate components.
    Type: Application
    Filed: February 10, 2022
    Publication date: August 11, 2022
    Inventors: Mika OKSMAN, Jyrki NISSINEN, Juhani LAINE, Harri MOILANEN