| 摘要 |
The combination of an escalator and a wheel chair, the escalator having side walls between which an endless belt of flights is moved, there being a track extending between lower and upper platforms at which at least one has one or more control gates to govern the escalator speed, the wheel chair having spaced side frames with main wheel supports spaced from downwardly extensible front wheel supports and controlled in response to the track to depress said front wheel supports to maintain the horizontal disposition of the wheel chair during vertical displacement of the flights when transported between said platforms.
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