Rib assembly having function of closing spring for helping closing of multiple-fold umbrella
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United States of America Patent
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N/A
Issued Date -
Sep 4, 2003
app pub date -
Mar 4, 2002
filing date -
Mar 4, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A rib assembly for multiple-fold umbrella includes: a top rib pivotally secured to an upper notch on a top of a central shaft, a stretcher rib pivotally secured between the top rib and a lower runner slidably held on the central shaft, an intermediate rib pivotally securable to the top rib or the stretcher rib, and a tail (or outer) rib pivotally connected to the intermediate rib; wherein either the top rib or the stretcher rib is formed as a lotus-shape rib when opening the umbrella; and upon opening of the umbrella, the lotus-shape ribs will be arcuately bent to store their resilience; and upon closing of the umbrella, the lotus-shape ribs will restore to release their resilience energy to automatically close the rib assembly. The rib assembly plays double duties both for supporting the umbrella cloth on the ribs and also for serving as 'closing springs' for automatically closing the umbrella by eliminating the installation of closing springs on the rib assembly.
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Family
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Cited Art Landscape
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