US Patent No: 8,191,296
Number of patents in Portfolio can not be more than 2000
Elevating billboard and control method thereof
Stats
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Jun 5, 2012
Issued date -
Jul 25, 2009
filing date -
12/509,439
serial no -
In Force
status
Importance
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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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First Claim
Related Publications
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International Classification(s)
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,829,688 Panel for displaying large size articles | 10 | 1987 | |
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| 7,014,226 Electromagnetic lock device | 1 | 2004 | |
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| 7,666,103 Amusement ride | 3 | 2004 | |
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| 7,195,294 Door brace | 1 | 2005 | |
Patent Citation Ranking
Maintenance Fees
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