GRAB-TYPE LIFTER WITH VACUUM-ASSISTED LIFT PADS

摘要

A material lifter [10] comprising a vacuum pump [70], a frame [20] containing the vacuum pump, an arm [30] located on each of two opposing sides [21] of the frame, each arm including an upper [31] and a lower end [39], the upper end pivotally connected to the frame, a cylinder [100] located on each of the two opposing sides of the frame, each actuator including an upper end [101] connected to the frame and a lower end [109] connected to a respective arm, a vacuum pad [40] located on each of the two opposing sides of the frame, each vacuum pad in fluid communication with the vacuum pump and removably connected to a respective arm, the vacuum pads being moveable along the arm to a first location and a first orientation and a second different location and a second different orientation wherein as the cylinders extend and retract the arms pivot toward and away from one another between a first clock position and a second different clock position and the vacuum pads remain in a same orientation during the pivot.