Patent ID: 7168686
Filing Date: 2007-01-30
Classification: B66D

Abstract:
1. Lifting apparatus for lifting and lowering a load, having a) a lifting drum; b) a drive, by which the lifting drum can be set in rotation in both directions; c) at least two bands, serving as pulling means, which are secured by one end to the lifting drum and at the other end carry a holding device for the load; d) the at least two bands being able to be wound up on the lifting drum, by rotation of the latter, in such a way that one turn lies above the other; and, e) the at least two bands can be wound up on the lifting drum with accurate tracking and so as to lie alternatingly one on top of the other, wherein lower ends of the bands are connected to a holding device for the load, which is configured as a compensating device for the varying length, on winding up and unwinding, of the unwound part of the bands lying one above the other on the lifting drum.