Patent ID: 8403382

Claim:
A retractable stopper configured to stop movement of a moving object, comprising: a housing configured to be mounted on a floor; a cover plate configured to cover part of the housing; a tilting element rotatably mounted to the housing about a rotational axis, wherein the tilting element can be moved from a retracted position into a blocking position by the action of a trigger magnet, fastened to the moving object, by rotation through a rotation angle, and in this blocking position block the movement of the moving object, wherein the tilting element comprises a front lever and a rear lever connected to each other, the rear part resting against the cover plate when the tilting element is in the retracted position; an elastic buffer element is disposed on the front part, and in the blocking position, is facing the moving object, wherein a stopper magnet or a magnetizable element is disposed on the tilting rear lever, and as the trigger magnet approaches over an approach region in front of the stopper, the magnetic field generated by the tilting element is configured to act against the stopper magnet or magnetizable element to make the tilting element rotate out of the retracted position into the blocking position before the trigger magnet is above the tilting element.