Abstract: A method and system for visually guiding a vehicle to an approach corridor and subsequent landing, parking, or docking zone. As a vehicle approaches the designated landing, parking, or docking zone, the pilot is visually guided into the approach corridor by one or more pairs of guidance light units. Each guidance light unit has at least an affirmative color light segment and a negative color light segment. The affirmative color light segment indicates affirmative approach, landing, parking, or docking conditions and the negative color light segment indicates negative approach, landing, parking, or docking conditions. The colored light segments of the guidance light units are positioned and oriented such that the affirmative color light segment either corresponds with the approach corridor or provides visual guidance to assist the pilot in guiding the vehicle into the approach corridor by defining outwardly extending guidance corridors.

Abstract: A hydraulic pump provides two different fluid pressure outputs from a single input. The pump includes a first double acting piston and cylinder having a pair of inlets on opposite sides of the first piston and a pair of outlets on the opposite sides of the first piston. A second double acting piston and cylinder are provided which cylinder has a pair of inlets on opposite sides of the second piston and a pair of outlets on opposite sides of the second piston. A common piston rod interconnects the pistons and means is provided for alternately supplying fluid to the first inlets of the first and second cylinders on one side of the pistons and then to the first inlets on the other side of the first and second pistons to cause the first and second pistons to reciprocate within the first and second cylinders, respectively.