Patent ID: 8122999
Filing Date: 2012-02-28
Classification: A62B

Abstract:
1. An escape device comprising: a disc support connected to an attachment device adapted to and capable of supporting at least one human body; and a generally vertical tube having a substantially uniform cross-section along its length, an upper end and a lower end; wherein the disc support is slidable through the vertical tube at a vertical sliding speed of the disc support which is controlled by a predetermined pressure difference between an upper part of the tube and a lower part of the tube; wherein a first section of said vertical tube includes a plurality of valves at different openings distributed in a predetermined pattern, size, and quantity spaced along the longitudinal direction of the tube; wherein a first section of the tube extends from a top portion to a middle portion of the tube; wherein each opening connects the inside of the tube to the outside of said tube and is connected in parallel with other openings by an otherwise closed channel; and wherein the distribution and size of the openings are arranged in a way that the disc support has a predetermined acceleration and speed going downward to decrease the time of evacuation of the persons.