AIR HOIST Russian patent published in 1995 - IPC

FIELD: lifting-and-conveying machines. SUBSTANCE: hoist has tubular stands 1. A lifting device in the form of flexible hose 5 interacting with a load-bearing member and the feeding system of the working agent in to the cavities of stands 1 is mounted in each of the stands. One end of hose 5 is fastened along the perimeter of tubular stand 1, the other end is connected with drive drum 3 mounted in the lower part of the cavity of stand 1. The upper section of hose 5 interacts with the load-bearing member by means of rolls 10 fastened on it. Belt 6 connected by its ends with drive drum 3 and with the load-bearing member is placed inside hose 5. EFFECT: simpler design. 2 dwg