Rib assembly for multiple-fold umbrella having plastic intermediate rib interconnected among light ribs
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United States of America Patent
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Oct 2, 2001
Grant Date -
N/A
app pub date -
Feb 22, 2000
filing date -
Feb 22, 2000
priority date (Note) -
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Abstract
A rib assembly for multiple-fold umbrella includes: an aluminum top rib pivotally secured to an upper notch formed on a top portion of a central shaft, an aluminum stretcher rib pivotally connected between the top rib and a lower runner slidably held on the central shaft, a plastic intermediate rib interconnected between the top rib and an aluminum or plastic outer rib, an aluminum connecting rib pivotally connected between the stretcher rib and the intermediate rib, and a spring rib slidably coupled to the intermediate rib by a ring member fastened on the intermediate rib; with the plastic intermediate rib interconnected among those light ribs for strengthening the rib assembly substantially made of light-weight materials.
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