Lighter-than-air vehicle for shading
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United States of America Patent
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Oct 14, 2014
Grant Date -
Dec 29, 2011
app pub date -
Sep 6, 2011
filing date -
May 15, 2008
priority date (Note) -
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Abstract
The lighter-than-air vehicle for shading is an airborne, movable system that provides shade from the sun for an open area. The vehicle is a substantially flat flying device having upper and lower surfaces, and which is filled with a lighter-than-air gas or gases, such as helium or hydrogen. The vehicle may be tethered to the ground through control wires, or may be fully autonomous and controlled by propeller fans. The required power may be provided by wire from ground, or through a portable power source, such as solar cells, mounted atop of vehicle. The vehicle has sun sensors that allow it to track the sun, and provides around the clock shaded area underneath its surface. The vehicle can also have pressure sensors and altitude sensors that may trigger an alarm in case of an emergency descent to the ground.
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