US Patent 8191561 Umbrella with integral anchoring structure

An umbrella with an integral anchoring structure is provided. The umbrella includes a post having a lower end for insertion into the ground, and an upper end for supporting an umbrella top. The umbrella includes an integral spiral shaped anchoring structure formed on the lower end of the post. The anchoring structure is formed with a width, W, greater than a diameter of the post and a length, L, which is adapted to stabilize a weight of the umbrella and secure the umbrella and the post in a variety of earthen conditions such as sand, lawn, and soil even in a prevailing breeze or stormier conditions. The umbrella further includes one or more retractable levers integrally attached along the post.