Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Patent
1985-03-01
1987-05-05
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Torso harness
Strand-engaging, with descent retarder
182192, A62B 114
Patent
active
046624759
ABSTRACT:
The rope (1) is guided through the nip (24) of a pair of pulleys (6, 7) and is otherwise extended in an S-shape about the pulleys (6, 7) of this pair. Each of these pulleys (6, 7) is connected for rotation with two gear wheels (26, 27) meshing with each other in the zone of the nip (24). Thereby high static friction is ensured between the rope (1) and the pulleys (6, 7), and a slippage of the rope (1) on the pulleys (6, 7), which is life-endangering for the descending person, is reliably prevented. A speed-dependent brake (31) and a brake (33-37) stressed by the weight (G) of the downwardly roping person effect a rate of descent that is extensively independent of this weight.
REFERENCES:
patent: 456532 (1891-07-01), Bliss
patent: 2276767 (1942-03-01), Dubuque
patent: 3739875 (1973-06-01), Clark-Padwicki
patent: 4097023 (1978-06-01), Muller
patent: 4494629 (1985-01-01), Raeburn
Rutschi Wilhelm
Wagner Gerd-Eberhard
Chin-Shue Alvin
Machado Reinaldo P.
Wagner Gerd-Eberhard
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