Self-braking safety apparatus for the rapid descent of persons in cases of emergency
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 8, 1988
Grant Date -
N/A
app pub date -
May 14, 1987
filing date -
May 14, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A self-braking apparatus is provided for cases of emergency in which a rapid descent of persons threatened by fire or danger is required on the outside of buildings or the like. The apparatus can be secured to a fixed point from which the descent is to be made and comprises a rotor on which a rope is wound which is mounted coaxially and inwardly of a drum. A heat-resistant handle and a brake which can be actuated by the user are secured to the drum by brackets. The rotor is provided with a plurality of radial holes each containing a spring urging a brake pad outwardly against the inner surface of the drum. The brake which can be actuated by the user is formed by a pair of levers pivotally connected to each other and acting with one of their ends on rods having an inclined plane in turn acting on brake pads urged against the lateral surface of the drum by the rods. When the hand brake is released, the rotation of the rotor and centrifugal force generated thereby exert braking action against the inner surface of the drum to produce a constant speed of descent of about 2.5 m/sec.
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