Combination door and emergency stairway exit
AssigneePullman Incorporated
InventorKeith J. Hallam
Life of this patent
Estimating the term…
Abstract
A combination end door and emergency stairway unit operates as a conventional rapid transit door to allow movement between cars. The unit also includes an auxiliary door inner frame pivotally mounting a staircase that may be rotated and lowered to the ground to allow passengers to alight from the vehicle. A locking, linkage mechanism securely interconnects the auxiliary door, the inner frame, and the movable staircase to form the vehicle end door unit.
Claims10
A combination end door and emergency stairway unit for passengers on a railway vehicle, the improvement comprising:
- a door frame surrounding a door opening;
- a modular door unit;
- said modular door unit having an inner door frame;
- hinge means for movement of the inner door frame from a position into and from said door opening;
- auxiliary door means attached to the inner door frame and having means for hinged movement into and from said inner door frame;
- an outer closure member mounted on said inner door frame;
- and
- means for pivotally moving said outer closure member from an upright position adjacent the inner door frame to an inclined position extending from the door opening to allow passengers to safely alight from the passenger vehicle.
The combination of outer door and stairway unit for passengers on a railroad vehicle comprising:
- a door unit adapted to close a door opening in said vehicle, said door unit including a door frame for pivotally mounting the door unit in said door opening,
- an outer closure member pivotally mounted on a lower portion of said door frame for movement about a generally horizontal axis from an up to a down position,
- an auxiliary door pivotally mounted on an inner side of said door frame about a generally vertical axis for movement of the auxiliary door between an open position and a closed position against the door frame,
- door locking means including a first locking mechanism adapted to lock said door frame in the door opening, and a second locking mechanism mounted on the said door frame cooperative with the auxiliary door for retaining same in a closed position against the door frame and for locking said outer closure member in the up position against an outer said door frame, and
- said locking means being releaseable for pivoting of both said auxiliary door to the open position and said outer closure member to the down position for safe exit from said vehicle.
Dependencies are inferred from the claim text.