Patent ID: 7252103

Claim:
An opening device mountable on an automatic umbrella including a shank, a handle at a lower end of the shank, a sliding sleeve on a top of the opening device and put on the shank, the sliding sleeve including a lower extension, an arc-shaped slot on the extension, a plurality of folding ribs pivotally connected to a top ring of the shank, a spring biased sliding ring put on the shank above the sliding sleeve, a plurality of stretchers each pivotably interconnecting an intermediate portion of the rib and the sliding ring, and a canopy stretched over the ribs, comprising: an upper trigger mechanism on the shank being lockingly engaged with the extension in a closed condition of the umbrella, wherein a pressing of the trigger mechanism enables the trigger mechanism to disengage from the extension prior to automatically opening the umbrella, and a lower, spring biased rib tip retaining mechanism put on the shank and disposed above the handle, the rib tip retaining mechanism adapted to contain tips of the ribs therein in the closed condition of the umbrella; wherein the sliding sleeve further comprises two opposite tabs on an outer surface of the extension above two ends of the slot.