Patent ID: 6550576
Filing Date: 2003-04-22
Classification: A62B

Abstract:
A rescue system for rescuing occupants from high floors in high rise buildings, comprising:a frame positioned adjacent an open or openable escape portion of a building, the escape portion being open or openable to the outside of the building; an air fan having a shaft and at least two vanes coupled to the shaft, the shaft being mounted to said frame such that said fan is rotatable relative to said frame; and a removable and replaceable cable cartridge comprising a rotatable housing which is removably coupled to said air fan so as to rotate said air fan upon rotation of said rotatable housing, and said cable cartridge having a cable pre-rolled on said rotatable housing, said cable having a free end which is connectable to a person to be rescued; wherein when the person to be rescued goes out from the escape portion of the building, a failing motion of the person causes the cable to move with the same speed as the speed of falling of the person, thus causing said rotatable housing to rotate which in turn causes the air fan to rotate and to create air resistance to the falling speed, until the falling speed of the person reaches a substantially equilibrium value when the resistance force created by the air fan is equal to the force of gravity acting on the falling person.