Up the round escalator.
Engineers at the Mitsubishi Electric Industrial Corp. took almost three years to design the product. So that the drive chains connecting the steps could twist, ball bearings were put between the links. The steps had to be shallower toward the inside of the curve but sill comfortable for passengers. Meeting these constraints required hours of computer calculations and numerically controlled tools to fashion each of the steps individually.
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|Title Annotation:||semicircular design for Japanese escalator|
|Date:||Mar 23, 1985|
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