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The window escape descent control device for emergency use from upper windows of tall buildings comprises a body harness supported on the end of a rope wound around a flanged spool. The spool, when turned by the unwinding rope pulled by the weight of an escaper in the body harness, turns the shaft a

The window escape descent control device for emergency use from upper windows of tall buildings comprises a body harness supported on the end of a rope wound around a flanged spool. The spool, when turned by the unwinding rope pulled by the weight of an escaper in the body harness, turns the shaft and an electrical generator operatively mounted thereon. The shaft also carries, and is controlled by, an electromagnetic brake and a speed control governor, which may be either centrifugally or optically operated and which, when a predetermined rate of shaft rotation is reached, causes energy to be released from the generator to actuate and apply the brake to the shaft; thus the rate off all of the escaper cannot exceed a pre-selected maximum. The mechanism is mounted on a frame support structure straddling and depending from the escape window ledge. The frame strucutre provides hand and foot support to aid the escaper in climbing out the window and in getting into position for descent. Means for rewinding the rope onto the spool for another escape descent from the same window is also provided.

대표청구항 ▼

Window escape descent control device for lowering an escaper from an upper window of a high building at a safe predetermined maximum rate of descent, which comprises: body support means for holding the escaper securely during the descent from window to ground; a main rope attached to said body suppo

Window escape descent control device for lowering an escaper from an upper window of a high building at a safe predetermined maximum rate of descent, which comprises: body support means for holding the escaper securely during the descent from window to ground; a main rope attached to said body support means, said main rope being of sufficient length to reach from window to ground; a spool on which said main rope is wound; a shaft coaxially carrying, and for simultaneous rotation with, said spool; speed control means operatively mounted on said shaft for governing the maximum speed of rotation of said shaft when said spool is rotated by the unwinding of said main rope from said spool by the weight of the descending escaper; and frame support means to be secured on the ledge of the escape window for providing mounting for said speed control means, said spool and said shaft, said frame means also providing hand and foot supports to aid the escaper in emerging from the window and positioning himself for descent.