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City University London unveils world's first freeform curved escalator

Jack Levy, an Emeritus Professor of Mechanical Engineering at City, has developed and patented the 'Levytator', and is now seeking to take it to market.
by Luke Nava

Architects will be able to create escalators in any shape they want, even freeform curves, thanks to the first significant rethink of escalator design since the 'moving stairway' was invented in 1897.

A system known as the 'Levytator' has been developed by Jack Levy, an Emeritus Professor of Mechanical Engineering at City University London. Unlike traditional designs, where redundant steps move underneath those in use, the Levytator utilises a continuous loop of curved modules, which can follow any path upwards, flatten and straighten out, and descend once more, all with passengers onboard.

The system can be arranged in any configuration - as a DNA-esque double helix in a science museum, for example - and also offers several practical advantages at a cost that is similar to a conventional unit.

"As all of the steps can be accessed from above, maintenance can be carried out much more easily. It also means that no excavation is required when installing the Levytator. This could be particularly useful in the heritage sector, where the system could be placed on top of a grand staircase in a listed stately home, providing better access for elderly and disabled visitors, but not destroying the fabric of the building."

Jack Levy, Emeritus Professor of Mechanical Engineering, City University London

"The Levytator opens up new possibilities for architects in hotel, airport, museum, theme park and commercial building design. As it can carry twice as many people as a traditional escalator, but at a comparable price, it will also be an attractive financial proposition."

David Chan, Director of the Centre for Information Leadership and consultant to the project, City University London

The technology has been patented in the UK, Europe, the USA, and China, and City University London is now actively seeking strategic partnerships with architects and manufacturers to take the Levytator to market.

Interested parties should contact Chan at or on +44 20 7040 8438.

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City, University of London is an independent member institution of the University of London. Established by Royal Charter in 1836, the University of London consists of 18 independent member institutions with outstanding global reputations and several prestigious central academic bodies and activities.