Lift apparatus having an articulated double parallelogram...

Details Lift apparatus having an articulated double parallelogram... Lift apparatus having an articulated double parallelogram...

B - Operations, Transporting

66

F

B66F 11/04 (2006.01)

Patent

CA 2480205

A lift apparatus includes a superstructure frame support, a riser, and an articulated parallelogram boom assembly operatively connected between the superstructure frame support and the riser. The articulated parallelogram boom assembly includes a floating frame, a lower parallelogram boom assembly operationally connected between the superstructure frame support and the floating frame, an upper parallelogram boom assembly operationally connected between the floating frame and the riser. A first lift means is provided for raising and lowering the articulated parallelogram boom assembly. A telescopic boom is connected to the riser. A second lift means raises and lowers the telescopic boom. The floating frame includes a notch in an upper portion thereof and the telescopic boom seats in the notch when the articulated parallelogram boom assembly is fully lowered and the telescopic boom is fully lowered.

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