Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Patent
1988-12-15
1990-03-20
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Torso harness
Strand-engaging, with descent retarder
182193, 188 654, A62B 120
Patent
active
049093495
ABSTRACT:
This invention relates to an emergency descending device having a life line, one end of which is adapted to be fixed at a high position, the other end of which is adapted to be extended to a low position, and a descending apparatus movably affixed around the life line and usually kept at a high position before operation. The descending apparatus is adapted to suspend a person and carries the person along the life line at a low speed from a high position to a low position. The improvement is characterized by the descending apparatus comprising a decelerating element which is a tubular member axially passed by the life line, forming a contact surface within the tubular member, and in addition, the contact surface being corrugated so as to increase the friction between the contact surface and the life line and reduce the descending speed of the descending apparatus while it suspends a person and lowers him/her from the high position.
REFERENCES:
patent: 465464 (1891-12-01), Dixon
patent: 1195069 (1916-08-01), Myers
patent: 1340146 (1920-05-01), Blake
patent: 1836462 (1931-12-01), Fowler
patent: 3317971 (1967-05-01), Meyer
patent: 4506760 (1985-03-01), Baker
Machado Reinaldo P.
Meller M. N.
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