Patents Assigned to Loglift Jonsered Oy AB
  • Method for controlling a crane actuator
    Patent number: 7818967
    Abstract: The invention relates to a method and an apparatus for controlling an actuator (7, 8) of a crane by control means (10) in a situation where the lifting power of the actuator (7, 8) of the crane is increased temporarily by an auxiliary valve arrangement (11). In the invention, control properties of the actuator (7, 8) are changed when the temporarily increased lifting power is applied to limit the speed of the actuator (7, 8).
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: October 26, 2010
    Assignee: Loglift Jonsered Oy AB
    Inventor: Ari Lehtinen