Patent ID: 7341418

Claim:
A vehicle equipped with a lift device for loading and unloading objects from a top of the vehicle comprising: (A) a drive source; and (B) a link unit in connection with said drive source, comprising: (a) a linear guide block disposed on a top of the vehicle; (b) a slide beam comprised of: (i) a mobile rail in slidable communication with the linear guide block, in a lengthwise direction thereof; and (ii) a main beam body connected to the mobile rail; (c) a boom having a first end and a free end, the boom being in movable connection with said drive source at a first end thereof via the main beam body and capable of being swung up and down in relation to the top of the vehicle by said drive source; (d) a telescoping arm having: (i) a first arm member having a first end in rotatable connection with the free end of the boom, and a second end; (ii) a second arm member in movable connection with the second end of the first arm member, said second arm member being mobile with respect to the first arm member; (e) an arm guide, in connection with one end of said slide beam, for guiding the first arm member of the telescoping arm in the lengthwise direction thereof when the telescoping arm is raised and lowered, said arm guide comprising: (i) a swing link connected to the slide beam, so as to be able to swing the same direction as the boom; and (ii) a liner guide block attached to an end of the swing link, so as to engage the first arm member of the telescoping arm; and (e) arm telescoping means in communication with the free end of the boom and the second arm member of the telescoping arm, capable of telescoping the telescoping arm.