Fire escape – ladder – or scaffold – Pole or strand grasping-type climber
Patent
1976-11-17
1977-11-29
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Pole or strand grasping-type climber
74 892, F16H 2702, A63B 2700
Patent
active
040601498
ABSTRACT:
A conveyer produces translation along the longitudinal axis of a cylindrically shaped body. An endless length of cable forms a tightly wrapped coil around the body and includes a loop displaced from the body. A support frame is supported by the terminal windings of the coil and is rotatable about the longitudinal axis of the body. A pulley is mounted on the frame for maintaining the loop in a substantially constant position with respect to the coil while a driving means induces relative rotational motion between the loop and the body about the longitudinal axis of the body. This relative rotational motion winds cable onto one end of the coil while simultaneously unwinding cable from the other end of the coil. The cable is maintained under tension so that the coil is wrapped tightly around the outer surface of the body. In this manner the frame and any load attached to it are conveyed along the longitudinal axis of the body.
REFERENCES:
patent: 295587 (1884-03-01), Sadler
patent: 2859629 (1958-11-01), Parker
patent: 3203270 (1965-08-01), Booth
patent: 3237720 (1966-03-01), Landquist
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