Wabtec Holding Corporation

Westinghouse Air Brake Technologies Corporation

Haibo Tong

Marianne L Krbec

An unlock mechanism for a rotary door operator of a transit vehicle includes a pivotally disposed lock member adapted for rotating into an unlock position and activating a valve for discharging the fluid pressure from a drive cylinder to enable a manual opening of the door. A spring is provided for biasing the lock member into a lock position. The lock member may be moved into the unlock position either with a cable or a lever handle.

Unlock mechanism for a rotary door operator

An unlock mechanism for a rotary door operator of a transit vehicle includes a pivotally disposed unlock member adapted for rotating a lock member into an unlock position and activating a valve for discharging the fluid pressure from the drive cylinder to enable manual opening of the door. A spring is provided for biasing the unlock member to a non-activated position. The unlock member may be activated either with a cable or a lever handle. A lock sensing switch provides a feedback on the lock condition to the transit vehicle control system. Additionally, a guiding bracket is provided for securing the cable in proximity of the unlock member.

A cover arrangement for a rotary door operator of a transit vehicle includes a cover with a cavity for encasing the components of the rotary door operator and with an aperture for engaging an elastomer seal coupled around an output shaft of the rotary door operator. An elastomer grommet is provided for enabling coupling of the manual release cable or handle. Additional apertures may be provided for routing of the fluid pressure lines and electrical wires.

Rotary door operator

A lock mechanism for a rotary door operator of a transit vehicle includes a lock member pivotally connected to a block cylinder and pivotally connected to a mounting bracket. Such lock member is rotatable in a locking direction to a predetermined position under a block member connected to the output shaft for preventing an axial linear movement of the door post which is connected to a door during the loss of fluid pressure. The block cylinder rotates the lock member to an unlocking position during normal operation to enable opening of the door. A lock sensing switch provides a feedback on the lock condition to the transit vehicle control system.

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Palapine, IN, United States of America

Haibo Tong