FOLDING FRAME SYSTEM WITH FOLDING FRAME ELEMENTS HAVING DIAGONAL MEMBER OF VARIABLE LENGTH
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United States of America Patent
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Issued Date -
Jan 24, 2008
app pub date -
Jul 19, 2006
filing date -
Jul 19, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A folding frame element includes a first hub element having a first end and a second end, a second hub element having a first end and a second end, a first strut pivotably attached at a first end and a second end to the first ends of the first hub element and the second hub element, respectively, a second strut pivotably attached at a first end and a second end to the second ends of the first hub element and the second hub element, respectively, and a diagonal member extending between the first end of the first hub element and the second end of the second hub element. The first and second struts are pivotable relative to the first and second hub elements between a closed position in which the first and second struts and the first and second hub elements are substantially parallel and the diagonal member has a first length and an open position in which the first and second struts define non-zero angles with the first and second hub elements and the diagonal member has a second length shorter than the first length.
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