Patent ID: 6244532
Filing Date: 2001-06-12
Classification: E06B

Abstract:
A device for winding a lifting cord, the device comprising:a rotatable shaft;a winding drum mounted on the rotatable shaft such that the winding drum rotates with the shaft and is free to move axially along the shaft, the lifting cord having a load-supporting length oriented generally perpendicular to the axis of said rotatable shaft and leading to one end attached to the winding drum; anda wrapping guide disposed between said load-supporting length and said one end of said cord so that said cord runs from said load-supporting length on one side of said guide and over said drum to the other side of said guide which is configured to engage the lifting cord such that as the shaft and winding drum rotate, the lifting cord wraps around the winding drum on said other side of said guide in even turns without overlapping and forces the winding drum to travel axially along the shaft.