Patent ID: 7516512

Claim:
A castor, comprising: a main body; two rollers each rotatably mounted on the main body; a stop member movably mounted in the main body and movable between a first position where the stop member is located at a height higher than that of each of the two rollers and a second position where the stop member is located at a height lower than that of each of the two rollers; a slide slidably mounted in the main body and rested on the stop member to move the stop member; a control member pivotally mounted on the main body and connected to the slide to move the slide; wherein the main body has a bottom formed with a slideway to allow movement of the slide and a receiving chamber to allow movement of the stop member; the stop member has a side formed with a receiving space connected to the slideway of the main body to allow movement of the slide; the receiving space of the stop member has a bottom provided with a tapered pressing face facing the slide, and the slide has a first end having a bottom provided with a tapered pressing face that is movable to press the pressing face of the stop member to press the stop member downward relative to the main body.