Abstract: A vertical control mechanism for a vertical lift assist device is provided in which a rotational twist grip element is in direct communication with a control signal that generates analog input signals corresponding to an operator's intended vertical destination of an end-effector. A vertical lift mechanism is thereby controlled to provide a vertical assist lifting force that assists an end-effector in the manipulation of a load.

Abstract: A practical intelligent assist device is provided that eliminates the complex use of force sensing weigh cells and vector interpreting software. By simplifying the input to a series of traditional voltage inputs, i.e. 1-4 volt signals, the use of standard available control componentry becomes available. Utilizing a series of such simplified inputs, including a load angle feedback, the processing of the vector math can be accomplished within a programmable logic controller (PLC). Outputs can then be simply generated to control a series of 0-60 Hz digital signals to drive direct drive motors.