Patent ID: 7997634
Filing Date: 2011-08-16
Classification: B65H,B66C

Abstract:
1. A lifting hook arranged to grab an object to be lifted by a cylindrical lifting surface formed thereto, the lifting hook having a hook shank, a hook part joining the hook shank and a locking device arranged to lock the lifting hook to the object to be lifted, a mechanical control device being mounted above the hook part to co-operate with the upper surface of the lifting surface for guiding the hook part to a lifting position onto the lower surface of the lifting surface, wherein the lifting surface is a grooved surface and in that the control device is a protrusion which is narrower than the lifting surface and extends forwardly from the hook shank in line with the lateral direction of the hook part, the forward end of the protrusion being provided with a control arm having a lower surface upwardly inclined towards the upper surface of the protrusion and side surfaces tapering towards the tip of the protrusion.