Compact emergency descender system

Details Compact emergency descender system Compact emergency descender system

1993-09-20

1995-01-10

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Torso harness

Strand-engaging, with descent retarder

182193, A62B 120

Patent

active

053798589

ABSTRACT:
A descender system includes an elongated strap of sufficient length to lower a person from a danger area to a safe area. The descender system includes a harness adapted to support a person connected to a compact descender mechanism having a channel through which the strap passes. First, second and third parallel cylindrical pins supported in side-by-side alignment in the channel, the strap passing through a first end of the passage around portions of the first, second, and third pins and through a second end of the passage. The first pin is held stationary, allowing movement of the second and third pins toward the first pin. A camming surface adjustment moves a camming surface in sliding, leveraged engagement with the third pin to force it toward the second pin, incrementing frictional drag of the first, second, and third pins on the strap.

REFERENCES:
patent: 221332 (1879-11-01), Mankin
patent: 288411 (1883-11-01), Connolly
patent: 556099 (1896-03-01), Kingsbury
patent: 586173 (1897-07-01), Frahm
patent: 666879 (1901-01-01), White
patent: 1087440 (1914-02-01), Freed
patent: 1098223 (1914-05-01), Brown
patent: 3799287 (1974-03-01), Ledner
patent: 3834489 (1974-09-01), Rabelos
patent: 4145027 (1979-03-01), Brimo
patent: 4223761 (1980-09-01), Sonnberger
patent: 4778030 (1988-10-01), Blair
patent: 5107956 (1992-04-01), Constantinis

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