Patent ID: 7935031

Claim:
A baby walker, comprising: 1.) a base, hollow in shape, having an upward extended adjustable link at each of its two laterals, and having a plurality of rollers at its bottom used for rolling against the ground; 2.) a hollow surround, having two regulators sustained by the top ends of the adjustable links, where the two regulators each has a sliding trough in the side that faces the other sliding trough, and one of two adjusting poles being placed with its two ends being joined to the like ends of the two sliding troughs respectively, where the distance between the two adjusting poles is adjustable; the two adjusting poles each supporting a connecting member, and a fixing member being extended from each of two ends of the connecting member, where the fixing members are used to encircle a riding infant child for holding his/her body; and 3.) the roller is a damping wheel, the damping wheel is provided with a cavity therein, where the cavity has an inner gear surface at its inner wall, and the cavity containing an arced flat member and an outer gear which has partial gear surfaces in mesh with the inner gear surface, where an axle of the outer gear extends through a crank to extend out through the center of the damping wheel; an outer protruded surface of the arced flat member corresponding to the inner gear surface and an inner indented surface of the arced flat member corresponds to the outer gear, and the cavity being infused with oil, the cavity provided with an inlet and an outlet at its two laterals facing each other, the inlet and the outlet are interconnected by a tube outside the cavity, and an oil regulating valve to control flow of the oil that flows into the tube, which is used to adjust the rotational speed of the damping wheel.