Patent ID: 9309712
Filing Date: 2016-04-12
CPC Classification: E05F,E05Y,F16H

Claim Text:
1. A revolving door comprising: a rotor comprising at least two wings and a belt pulley, wherein the rotor is configured to rotate about a central axis of the rotor, and wherein the at least two wings extend in a radial direction from the central axis of the rotor; and a drive device comprising: a drive apparatus and a drive belt; wherein: the drive apparatus is coupled to the rotor by the drive belt, such that the rotor rotates about the central axis as the drive belt moves; the drive device further comprises a clamping apparatus for clamping and redirecting the drive belt; the drive belt operatively engages the drive apparatus and the clamping apparatus; the clamping apparatus and the drive apparatus being configured to move relative to each other such that an expansion of the drive belt in an event of acceleration or braking of the rotor by the drive apparatus is compensated for by a change in a distance between the clamping apparatus and the drive apparatus; the drive belt comprises a toothed side and a non-toothed side; the drive apparatus comprises a toothed drive wheel which is in engagement with the toothed side of the drive belt; the non-toothed side of the drive belt is in abutment with the clamping apparatus and with the belt pulley which is connected to the rotor for conjoint rotation therewith; the belt pulley is non-toothed; and the belt pulley is driven by the non-toothed side of the drive belt through a frictional engagement between the belt pulley and the non-toothed side of the drive belt, such that the belt pulley is configured to be driven by the drive device, braked by the drive device, or driven by the drive device and braked by the drive device.