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 2480238

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, and a lift mechanism for raising and lowering the articulated parallelogram boom assembly. The lift mechanism remains vertically oriented with respect to the superstructure frame support over a range of motion of the articulated parallelogram boom assembly.

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