Abstract: An operator control system is provided for a materials handling vehicle, the materials handling vehicle including an operator station having a support structure. The operator control system includes an operator control assembly having a housing mounted to or integral with the support structure, and at least one control element for controlling a function of the vehicle. One or both of the housing and/or the control element is positionable in a plurality of positions.

Abstract: A work assist system is provided for an industrial vehicle. The work assist system includes a support structure having a portion including a predefined cross-sectional shape. The work assist system further includes a clamp member having coupling structure for removably coupling the clamp member to the support structure portion, and mounting structure that removably supports a work assist item that is usable by an operator located in an operator compartment of the vehicle.

Abstract: A ball dropper for introducing a ball into a wellbore can include a housing, a first tube having an inlet and an outlet, wherein the outlet of the first tube is coupled to the housing, a second tube having an inlet and an outlet, wherein the inlet of the second tube is coupled to the housing, and an insert moveably coupled with the housing and adapted for receiving at least a portion of a ball. An actuator can be adapted to move the insert from a first position for receiving a ball to a second position for disposing the ball in ball dropping communication with the second tube.