An elevator (North American English)[1] or lift (Commonwealth English)[2] is a type of cable-assisted, hydraulic cylinder-assisted, or roller-track assisted machine that vertically transports people or freight between floors, levels, or decks of a building, vessel, or other structure. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack.

Leave a Reply

Suggest an invention you think it should be here

About

Inventions that changed the world

Navigation