Stoves and furnaces – Ovens – Domestic
Patent
1976-08-12
1977-12-20
O'Dea, William F.
Stoves and furnaces
Ovens
Domestic
353 3, 250203R, F24J 302, G03B 2100, G01J 120
Patent
active
040635430
ABSTRACT:
The servo tracker of the instant invention comprises an apparatus for positioning of a major reflector to compensate for relative movement between the Earth and Sun. A base member supports a movable major reflector and a fixedly positioned minor reflector. The major reflector is movable in both a north/south and east/west direction. When correctly positioned, the major reflector directs the light rays of the Sun toward a major target where useful energy is produced. When correctly positioned, a portion of the reflected light rays from the major reflector are reflected by the minor reflector toward a minor target positioned adjacent a pair of sensors. When the major reflector is improperly positioned due to relative movement between the Sun and Earth, the reflected light rays from the minor reflector are directed toward one of the sensors depending at which axis the major reflector is improperly positioned and the direction required for repositioning to a correct position. When receiving the Sun's light rays, the sensor heats causing expansible fluid within a closed hydraulic system to expand causing a linear actuator connected between the base and one of the axis of the major reflector to actuate and reposition the major reflector until the Sun's rays from the minor reflector are again directed toward the minor target. Both of the axes of movement of the major reflector have a sensor and actuator system. The major reflector is designed to return from a Sun set position by gravity to a position for reflecting the morning light rays of the Sun toward the major target.
REFERENCES:
patent: 2712772 (1955-07-01), Trombe
patent: 3924604 (1975-12-01), Barak
patent: 3924604 (1975-12-01), Anderson
Gilliam Frank D.
Jones Larry
O'Dea William F.
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