Patent ID: 7318666

Claim:
A blender, comprising: a base defining an upper receiving space delimited by a circumferential wall having an inside surface on which a plurality of positioning projections and a positioning seat, the positioning seat defining a through hole, the base housing a motor that is connected to a safety switch, the safety switch comprising a bar received in the through hole of the positioning seat; a container having a lower end to which a container retainer is releasably mounted, the container retainer forming a plurality of recesses corresponding to and fit over the positioning projections, a movable member mounted to the container retainer, the movable member forming at least one peg extending through the container retainer; a cutter set rotatably mounted to the container retainer; and a cover removably mounted to an upper opening of the container, and characterized in that a plurality of posts each forming an internally-threaded hole extends from a bottom of the container retainer and that the movable member comprises a plurality of lugs each forming a hollow cylinder for respectively receiving the posts therein, a resilient element being received in each hollow cylinder and acting between the post and the hollow cylinder, wherein by mounting the container retainer to the lower end of the container, a lower edge of the container depresses the peg downward to move the movable member downward to cause the movable member fit into the positioning seat so as to further depress the bar of the safety switch downward to actuate the safety switch for turning on the motor and thus driving the cutter set.