Patent ID: 9045320
Filing Date: 2015-06-02
Classification: B60P,B63C,B66F

Abstract:
1. A lift truck for lifting and stacking boats, comprising: a self-propelled main frame with wheels; a telescopic boom pivotably connected close to a rear end of said main frame, said telescopic boom being pivotable around a pivot axis which is a substantially horizontal cross-axis with regard to a for-and-aft direction of said truck, said telescopic boom rotating from a substantially horizontal laying arrangement to a substantially upright arrangement in which a center of gravity of said telescopic boom is at the rear end of said truck; a lift assembly comprising a pair of lift forks bound to a telescopic frame for supporting said pair of forks, said telescopic frame being pivotably connected at the end of said telescopic boom, said lift assembly pivoting around a pivot axis which is a substantially horizontal cross-axis with regard to a for-and-aft direction of said truck, so that when the telescopic boom has reached a vertical position, a portion of the lift assembly which forms a straight telescopic structure is substantially vertical and parallel to the telescopic boom, with said portion being adapted to be extended downwards; and a connection/control system operable to set a relation between the pivoting of said lift assembly around said pivot axis thereof and the pivoting of said telescopic boom around said pivot axis thereof, for keeping said pair of lift forks in a substantially horizontally extending arrangement during said pivoting.