Patents by Inventor Åke Eklöf

Åke Eklöf 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).

  • Method and device of controlling a rock drilling machine
    Patent number: 6732813
    Abstract: A method and device for controlling a rock drilling machine (51) includes an impact device (5) arranged to act on a drilling tool (52), a rotation motor (7) for rotating the drilling tool (52), and a feed motor (6) for feeding the drilling tool (52) against a ground surface (53). The pressure to an inlet (30) of the rotation motor (7) is sensed, and the pressure to an inlet (32) of the feed motor (6) is reduced, for the purpose of maintaining the pressure to the rotation motor substantially constant, when the pressure to the inlet (30) of the rotation motor (7) exceeds a first predetermined value (41). When the pressure to the inlet (30) of the rotation motor (7) exceeds a second predetermined value (42), the pressure to an inlet (31) of the impact device (5) is controlled to be inversely proportional to the pressure to the inlet (30) of the rotation motor (7).
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 11, 2004
    Assignee: Atlas Copco Rock Drills AB
    Inventor: Åke Eklöf