B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
364/25
B66B 13/12 (2006.01) B66B 13/20 (2006.01)
Patent
CA 1299785
Abstract of the disclosure With this device, it is possible to open the cage door (30) of a lift cage which is situated in the region of a storey together with a shaft door, and namely in the normal case driven automatically by a drive (36) or, in the case of a current failure, manually by a passenger. If the lift cage is situated outside a storey, the cage door remains locked by the same device. The cage door (30) is driven through a belt-shaped drive means (42) by way of an entraining parallelogram (1), which consists of a rigid cam (2) and a movable cam (3) and is arranged at the upper part of a cage door. For the free travel, the entraining parallelogram (1) is closed and it opens for the coupling with the shaft door between two coupling rollers arranged at the shaft door before a movement of the doo?s takes place. The movable cam (3) of the entraining parallelogram (1) possesses a compressible ramp curve (5), which during the travel and on the stopping outside a storey lifts off from a rigid cam carrier (4) due to leaf springs (6). On the coupling with the coupling rollers (44, 45) of a shaft door, the ramp curve (5) is pressed against the rigid cam carrier (4). This displacement travel is utilised for the unlocking of a cage door bolt (12).
590796
Ag Inventio
Riches Mckenzie & Herbert Llp
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