Land vehicles – Wheeled – Attachment
Patent
1980-11-10
1983-01-25
Bertsch, Richard A.
Land vehicles
Wheeled
Attachment
105445, 105447, 182 19, 182 91, B60R 302, B62D 2522
Patent
active
043699847
ABSTRACT:
A stair assembly for a passenger vehicle, especially an omnibus, in which the stair assembly is arranged in a lateral access area of the vehicle. The stair assembly comprises a horizontally extendable first stair member connected by links to a second stair member to form a parallelogram linkage in which the second stair member can be pivotally moved towards the ground and laterally outwards from the first stair member. In order to bridge a lateral gap between the vehicle and the edge of a boarding platform, the first stair member whose upper surface is at the level of the platform, is extended towards the edge of the platform and the second stair member is carried along in a parallel position beneath the first stair member. When the bus is to be boarded and unboarded from the ground, the first stair member is fully extended, together with the second stair member beneath it whereafter the second stair member is pivoted into lowered position.
REFERENCES:
patent: 1628505 (1927-05-01), Lundquist
patent: 2487921 (1949-11-01), Gulver
patent: 3776143 (1973-12-01), Cox et al.
patent: 4020920 (1977-05-01), Abbott
Bertsch Richard A.
Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
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