Patent ID: 7191873

Claim:
A vertically mobile enclosed corridor for the face of a building comprising: a plurality of rails attached to at least one face of a building, a first elevator car on a first rail and a second elevator car on a second rail on one face of the building, a corridor extending between the first and second elevator cars for riding up and down the face of the building when the elevator cars travel up and down the rails on the face of the building in unison, a corner corridor portion attached to the second elevator car on one face of the building extending from the second elevator car to the corner of the building, a second face of the building having a plurality of rails, with a third elevator on a third rail and a fourth elevator on a fourth rail with a corridor therebetween, and a corner corridor portion attached to the third elevator for extending to the corner of the building to engage the corner corridor portion of the second elevator car such that passengers on one corridor can transfer to the other corridor.