Patent ID: 9609926
Date: 2017-04-04
CPC Classifications: A45B

Claim:
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; wherein the plurality of ribs includes at least one rib comprising an elongated body having a cross-sectional shape in which an outer surface is defined by three planar facets disposed circumferentially about the body, wherein the cross-sectional shape of the body is defined by three convex sections interspersed between the three planar facets for providing increased torsional strength to the elongated body, wherein each of the convex sections is directly opposite one respective planar facet.