SELF-LEVELING APPARATUS
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United States of America Patent
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Issued Date -
Jul 18, 2013
app pub date -
Dec 13, 2012
filing date -
Dec 14, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A self-leveling apparatus, a tray table for use with a seat comprising such an apparatus, and a method of maintaining a horizontal level of a mounting member are provided. The self-leveling apparatus comprises: a gear train rotatable about a fixed reference point, the gear train comprising a first gear fixedly mounted to the reference point; a rotatable last gear, and an odd number of rotatable intermediate gears meshing between the first gear and the last gear; and a mounting member adapted to be coupled the last gear, the mounting member having a surface capable of being positioned horizontally; wherein the last gear is further adapted to rotate locally about its axis an equal and opposite amount to a system rotation by the gear train about the reference point, thereby maintaining the surface horizontal.
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