Patents by Inventor Leo Häkkinen

Leo Häkkinen 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).

  • Arrangement in rock drilling apparatus
    Patent number: 6615932
    Abstract: Arrangement for replacing a drilling component in a rock drilling apparatus, which arrangement comprises a component magazine for storing replaceable components required in drilling and means for driving the drilling unit to a predefined position and location relative to the component magazine. The arrangement further comprises a changing unit for moving the components between the component magazine and the drilling unit.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: September 9, 2003
    Assignee: Sandvik Tamrock Oy
    Inventors: Tapani Huhdanmäki, Leo Häkkinen
  • Method and arrangement for determining position of unmanned mining vehicles
    Patent number: 6616244
    Abstract: A method of determining the position of unmanned mining vehicles. According to the method, control marks are provided in the mine, for positioning mining vehicles in production use by means of a marking device, such as a paint sprayer (14), provided in a specific measuring vehicle (3). The invention also relates to a measuring vehicle that is unmanned and comprises a measuring device for measuring a mine and also a marking device for providing a mine gallery with control marks.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: September 9, 2003
    Assignee: Sandvik Tamrock
    Inventor: Leo Häkkinen