Prof. Jack Levy of City University London Patents Bending Escalator: Levytator
This escalator follows free-form curves (but not convention!) and offers a better "cost per usable step" than your typical moving stairs. It has been patented in Europe, USA and in China.
Watch the video -
[video=youtube;iC_se2zrmLM]https://www.youtube.com/watch?v=iC_se2zrmLM[/video]