Abstract:
Mechanism for driving a pair of doors through compound movement between open and closed positions wherein an inside semi-plug action is defined by moving the doors along guide tracks. An obstruction sensor may be provided in the drive linkage for recycling the door operation when an obstruction is encountered by the door.
Abstract:
Door operator for a transit vehicle including a primary linkage device for driving the door between open and closed positions and for monitoring door position and a secondary linkage device for monitoring door position. Additionally, a device is provided for locking the door in closed position in association with the secondary linkage device.
Abstract:
A door operator for a vehicle wherein resilient means couples the drive arm to the door to control the force applied by the door operator throughout the door closing cycle. The operator is compact and mountable in the side wall of the vehicle above the floor and includes an independent locking system, together with an emergency opening assembly.