182 / | HD | FIRE ESCAPE, LADDER, OR SCAFFOLD |
3 | DF | TORSO HARNESS {5} |
231 | .~ Attached to strand wound on reel, and means for retarding unwinding of strand {4} | |
232 | DF | .~.~> Including spring for rewinding strand |
233 | DF | .~.~> Fluid resistance brake |
234 | DF | .~.~> Movable, friction brake element applied by centrifugal force |
235 | DF | .~.~> Friction brake and occupant-operated mechanism for applying brake during descent |