Fire escape – ladder – or scaffold – Traversing – track-mounted – With occupant elevating or lowering means
Patent
1994-04-15
1995-07-11
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Traversing, track-mounted
With occupant elevating or lowering means
182143, E04G 314
Patent
active
054312469
ABSTRACT:
A device for displacing a gondola in the vertical and horizontal direction alongside a building has a guide rail with a first and a second end connected to the building. A carriage is slidably connected to the guide rail. A gondola is connected to the carriage so as to be vertically displaceable relative to the carriage and horizontally displaceable parallel with the carriage. A first drive unit is operatively connected to the gondola and has a first pulling member movable so as to be retractable into and releasable from the first drive unit for displacing the gondola. A second drive unit is operatively connected to the gondola and has a second pulling member movable so as to be retractable into and releasable from the second drive unit for displacing the gondola. The first and second drive units cooperate with one another for displacing the gondola in the horizontal and vertical directions and are activatable together in a first operative mode wherein the pulling members are simultaneously retracted, in a second operative mode wherein pulling members are simultaneously released, a third operative mode wherein one of the pulling members is released and the other of the pulling members is retracted, and a fourth operative mode wherein only one pulling member is moved, to displace the gondola in the vertical and horizontal direction, as desired.
REFERENCES:
patent: 447898 (1891-03-01), Nygren
patent: 2178956 (1939-11-01), Dyer
patent: 4811819 (1989-03-01), Sugiyama
Chin-Shue Alvin C.
Matherly Andrea
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