Patent ID: 6705826
Filing Date: 2004-03-16
Classification: B66F

Abstract:
A lift truck comprising:a mobile frame; a tiltable boom provided upon said frame and fixed thereto in a tilting manner by means of a support movable in relation to the frame between a rear position and a front position; a tilting device arranged to tilt said boom; and a displacement device arranged to move the support and coupled to the tilting device for the boom, such that while the tilting device tilts the boom about a geometrical tilting axis, the displacement device simultaneously moves the support of the boom in such a manner that the front end of the boom follows a path which is practically perpendicular to the above-mentioned longitudinal direction of the frame; and wherein the displacement device and the tilting device are coupled to one another by a coupling containing a template and a follower, the template being fixed in relation to the frame and defining a specific path on for the follower, the coupling having a detection device arranged to detect a change in the vertical distance between the follower and a point which is fixed to the boom at a distance from the geometrical tilting axis, the distance of which can possibly be zero in order to control, as a function thereof, the displacement device, such that the above-mentioned change in the vertical distance is compensated.