Movable supporting construction
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United States of America Patent
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Apr 16, 2013
Grant Date -
Oct 25, 2007
app pub date -
Apr 20, 2007
filing date -
Oct 26, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A movable supporting construction for placing on a floor, comprising a lower part and an upper part cooperating with said lower part, wherein the lower part is designed to rest on the floor and to assume a position that is determined by the condition of the floor, and the upper part has a first and a second position, wherein in the first position, the upper part is suspended freely above the lower part and in the second position, the upper part rests on the lower part maintaining a predetermined invariant position, wherein in the second position, the lower part and the upper part are in line contact, thereby determining a contact line that forms at least a portion of a closed line.
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