LIFTING PLATFORM
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United States of America Patent
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Issued Date -
Jun 11, 2015
app pub date -
Sep 16, 2014
filing date -
Dec 6, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lifting platform includes a base, two “T”-shaped parallel sliding grooves in supporting bars, two wheels, a platform, and a cylinder. Each wheel is held away from the internal far rolling surface of each sliding groove in an original position because of the orientation of the connected platform, but can contact and rest upon the rolling surface and further roll along the rolling surface when the platform is rotated. A hydraulic or air-driven piston rod of the cylinder can push the platform to first rotate and then move upward. The platform is transitionable between: (i) an inclined configuration in which each first wheel is in the original position; (ii) a horizontal configuration in which each first wheel contacts and rests upon a sliding groove; and (iii) a lifting configuration in which each first wheel rolls along a sliding groove.
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