UMBRELLA HAVING IMPROVED SHAFT AND RIB ASSEMBLY

摘要

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.

主权项

1. An umbrella comprising:
an elongated shaft having a first end and an opposite second end; a runner slidably disposed about the elongated shaft; and 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 which in the open position, the ribs are in an open, extended position and in the closed position, the ribs are in a closed, collapsed position, the struts extending between at least one rib and the runner; wherein 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.