Umbrella having improved shaft and rib assembly
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United States of America Patent
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Apr 5, 2016
Issued Date -
N/A
app pub date -
Oct 9, 2013
filing date -
Oct 9, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An umbrella is formed of an elongated shaft having a first end and an opposite second end and a runner slidably disposed about the elongated shaft. The umbrella includes a rib assembly including a plurality of ribs that are attached to the runner by a plurality of struts that move between open and closed positions. In accordance with the present invention, the elongated shaft has a cross-sectional shape defined by a plurality of curved sections and a plurality of planar sections interspersed between the plurality of curved sections for providing increased torsional strength to the elongated shaft. At least one of the ribs can have a cross-sectional shape defined by a plurality of curved sections and a plurality of planar sections interspersed between the plurality of curved sections for providing increased torsional strength to the at least one rib.
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