Multi-level folding step for track-bound vehicles

Details Multi-level folding step for track-bound vehicles Multi-level folding step for track-bound vehicles

1991-05-15

1992-10-13

Oberleitner, Robert J.

Railway rolling stock

Steps

Folding

105349, B61D 2300

Patent

active

051541254

ABSTRACT:
A folding staircase for track-bound vehicles comprises a base ladder part, movably carried in the vehicle, and a swinging ladder part hingedly carried by the base ladder part. The base ladder part is movable between a stowed position and an extended position whereat it extends from the vehicle generally in the direction of travel. The swinging ladder part is rotatable between a first position, whereat it overlies the base ladder part, and a second position, whereat it extends from the distal end of the base ladder part to the track. Devices are provided for displacing the base ladder portion from the stowed position to the extended position and for displacing the swinging ladder part from the first position to the second position.

REFERENCES:
patent: 1109224 (1914-09-01), Herrin
patent: 1148356 (1915-07-01), Chickering
patent: 3083784 (1963-04-01), Urian
patent: 3955827 (1976-05-01), Wonigar
patent: 4014486 (1977-03-01), Nelson et al.
patent: 4216725 (1980-08-01), Hallam
patent: 4275664 (1981-06-01), Reddy
patent: 4453684 (1984-06-01), Hanks
patent: 4583466 (1986-04-01), Reddy et al.
patent: 4615275 (1986-10-01), Ishiznka
patent: 4757876 (1988-07-01), Peacock

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