Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ari Lehtinen0
Date of Patent
October 26, 2010
0Patent Application Number
117263010
Date Filed
March 21, 2007
0Patent Primary Examiner
Patent 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).
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