Patent ID: 6966151

Claim:
The method of opening a door at the wall of a building, at an elevation above ground, that includes: a) providing a bar at one side of the door, b) providing means connecting the bar to the door so that the door opens when the bar is swung, c) pivotally swinging the bar in a rearward direction relatively away from the door so as to cause the door to swing forwardly relatively away from the bar toward open position, and while remaining substantially vertical, d) providing a door casement to be carried by the building wall, the casement defining a door opening that is closed by the door before the bar is swung, and that is opened in response to bar swinging, rearwardly, e) and providing a barrier which has a position extending crosswise of said casement opening during swinging of the door toward said open position, to block user egress through said casement opening until the user is prepared for safe descent after egress through said opening.