Elevating billboard and control method thereof
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United States of America Patent
Stats
-
Jun 5, 2012
Grant Date -
Jan 28, 2010
app pub date -
Jul 25, 2009
filing date -
Jul 25, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An elevating billboard and control method thereof, which includes a hollow column, a billboard stent, and a windlass controlling a motor, forward relay and back relay, wherein a hollow cylinder is fixed with the billboard stent and rings the column so as to slide along the column up and down, a fixed pulley disposed on the top of the column, a free end of a guy cable of the windlass connecting with the hollow cylinder by the fixed pulley. By using the motor of the windlass and the fixed pulleys, the elevating billboard is easy to assemble, disassemble or maintain, and is capable of completing the up and down movement easily and quickly. And using the real-time monitor of the anemoscope, the elevating billboard completes the up and down movement easily and quickly by wind scale.
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International Classification(s)
Cited Art Landscape
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