A roller door and a drive assembly for a roller door

摘要

This invention relates to a drive assembly for a roller door. In one form the drive comprises a motor for driving the door outputting drive via a first gear form, a means for manually driving the door outputting drive via a second gear form; 5 a means of selecting either of the manual or motor drive for the door, a door curtain carrying wheel having a third gear form via which the wheel can be driven, where each of the first, second and third gear forms is or drives via one of a sun gear, an annulus gear, or the planet carrier of an epicycle gear box. Figure 12