Hoisting Crane
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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app pub date -
Dec 18, 2006
filing date -
Jun 18, 2004
priority date (Note) -
Abandoned
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Abstract
A hoisting crane having a substantially hollow vertical column with a body disposed between a foot and a top. A jib connected to the substantially hollow vertical column an annular bearing structure, extending around the substantial hollow vertical column guiding and carrying a jib connection member and rotatable about the substantially hollow vertical column. The jib connection member forms a substantially horizontal pivot axis the jib to pivot from the foot towards the top and from the top towards the foot.
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