Patents by Inventor Heimo Ihalainen

Heimo Ihalainen 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).

  • Measuring device, rock breaking device and method of measuring stress wave
    Patent number: 7895900
    Abstract: The invention relates to a method of measuring a stress wave and to a measuring device and a rock breaking device. A percussion device (7) gives impact pulses to a waveguide (21), where a compression stress wave and a reflected tensile stress wave are generated, which propagate in the waveguide. The compression stress wave causes an extension in the waveguide and the tensile stress wave a thinning, in which case properties of the waveguide may be determined by measuring geometric changes in the cross section of the waveguide. The measurement data are utilized in controlling the rock breaking device.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: March 1, 2011
    Assignee: Sandvik Mining and Construction Oy
    Inventors: Markku Keskiniva, Vesa Uitto, Heimo Ihalainen, Jukka Lekkala
  • MEASURING DEVICE, ROCK BREAKING DEVICE AND METHOD OF MEASURING STRESS WAVE
    Publication number: 20100147084
    Abstract: The invention relates to a method of measuring a stress wave and to a measuring device and a rock breaking device. A percussion device (7) gives impact pulses to a waveguide (21), where a compression stress wave and a reflected tensile stress wave are generated, which propagate in the waveguide. The compression stress wave causes an extension in the waveguide and the tensile stress wave a thinning, in which case properties of the waveguide may be determined by measuring geometric changes in the cross section of the waveguide. The measurement data are utilized in controlling the rock breaking device.
    Type: Application
    Filed: January 16, 2007
    Publication date: June 17, 2010
    Applicant: Sandvik Mining and Construction Oy
    Inventors: Markku Keskiniva, Vesa Uitto, Heimo Ihalainen, Jukka Lekkala