US Patent 7448399 Umbrella

An umbrella includes an umbrella support, a plurality of umbrella ribs that are installed on an upper portion of the umbrella support and that are capable of being folded, a plurality of support ribs respectively supporting the umbrella ribs, a slider to which an end of each of the support ribs is hingedly coupled and which slides along the umbrella support to fold or unfold the umbrella ribs and the support ribs, and a canopy giving a user shelter from rays of the sun, rain, or snow. The canopy is divided into an upper canopy installed on upper portions of the umbrella ribs and a lower canopy installed on lower portions of the umbrella ribs. A space is formed between the upper and low canopies when the umbrella is unfolded.