Descent controller

Details Descent controller Descent controller

1991-02-07

1992-07-21

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Torso harness

Strand-engaging, with descent retarder

188 652, 188 655, A62B 114, B65H 5914

Patent

active

051314916

ABSTRACT:
A descent controller (30) for lowering a load along a rope (32). Controller is a friction cylinder or capstan (31) of a length adapted to receive a plurality of turns of rope (32) between top and bottom end plates (34, 35) adjacent the upper and lower ends of said cylinder which overhang the cylinder (31) and define radial slots (40, 41) sized to loosely receive the rope. An upwardly narrowing tapered slot (44) defined diametrically through the capstan (31) receives and releasably grips the rope. An annular clamp ring (48) is slidably mounted on the cylinder (31) and defines a radial aperture (49) which loosely receives the rope as it exits from the tapered slot (44). A spring (41) biases the ring (48) upwardly along the said friction cylinder (31) for releasably wedging the rope (32) in the tapered slot. A gripping cylinder (55) is secured to the ring for sliding the ring (48) along the friction cylinder (31) to release the rope (32) from the narrow end (46) of the tapered slot (44), and defines a housing enclosing the capstan and rope turns.

REFERENCES:
patent: 4102431 (1978-07-01), Carroll
patent: 5038888 (1991-08-01), Varner et al.

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