Machines Used to Rotate Solar Collector Troughs Consisting of Mechanical Drive Mechanisms and Their Associated Linkages, Gearing, Timing Mechanisms and Pumps

Electrical Control Apparatus Used to Govern the Rotation of a Solar Tracking Apparatus Relative to the Position of the Sun-Namely, Photodetectors, Logic Devices, Timing and Drive Mechanisms and Their Associated Circuitry

Solar Collector Systems Comprising Receiver Tubes, Collector Troughs, Tracking Mechanisms, Drives and Controls Therefor