Patent ID: 6152509
Filing Date: 2000-11-28
Classification: B66C

Abstract:
Coupling element for coupling to an object to be lifted, wherein said object is provided with an anchor having an anchor shank and an anchor head at its free end, the anchor head having a width larger than the width of the anchor shank, the coupling element comprising:a body with an aperture for accommodating a bracket of a gripping element, such that the coupling element can rotate freely with respect to such bracket;an accommodation space in the interior of said body for accommodating the anchor head;side walls defining a boundary of said accommodation space;supporting edges formed on said side walls for supporting the anchor head, said supporting edges defining a slit in the periphery of said body for accommodating the anchor shank, the slit having a width smaller than the width of the anchor head;a remote-controllable locking bolt, which is arranged slidably in its lengthwise direction in a bore provided in said body, wherein said locking bolt can slidably be displaced between a release position and a locking position in which a free end of said locking bolt can rest against a front face of an anchor head accommodated in said accommodation space in order to prevent rotation of said body with respect to said anchor head;a rotatable driving element, which is fitted in the interior of said body, and which is in engagement with said locking bolt; anda control element for rotating said driving element.