US Patent 7665476 Asymmetric umbrella

An asymmetric umbrella includes a canopy, a shaft eccentrically disposed beneath the canopy, and a runner slidably mounted on the shaft and slidable between a first position, in which the canopy is collapsed, and a second position in which the canopy is extended. A canopy supporting frame includes rib assemblies each of which has a first end coupled to an apex of the shaft and a second end coupled to the canopy, wherein each of the rib assemblies further comprises a short rib assembly and a long rib assembly.