Patent ID: 8555904

Claim:
An umbrella stand, comprising: a housing having a bottom provided with an opening; and an operation mechanism mounted on the housing; wherein the operation mechanism includes: a support frame mounted in the housing and having two receiving slots formed in two opposite ends thereof; two mounting plates each pivotally mounted on the support frame and each aligning with a respective one of the receiving slots of the support frame; two pivot shafts each mounted in the support frame and each extended through a respective one of the mounting plates so that each of the mounting plates is pivotally attached to the support frame; two castors each rotatably mounted on a respective one of the mounting plates; two mounting tubes secured on the support frame; a driven rod rotatably mounted in the mounting tubes; and two pressing plates secured on two opposite ends of the driven rod to rotate in concert with the driven rod and each pressing a respective one of the mounting plates; and wherein each of the castor is movable in concert with the respective mounting plate between a first position where each of the castors is retracted into the opening of the housing, and a second position where each of the castors is protruded outward from the opening of the housing.