submarine elevator by dae yong kim from korea

When the submarine rises to the surface and sinks, the gravity and the buoyancy are used.
Applying it to the elevator, the elevator uses the gravity and the buoyancy as basic power and can be operated as by controlling the speed with the propeller.
The new elevator doesn’t have danger of crash unlike the existing one because it is filled with the water in the big glass tube.
It can come up using the buoyancy by filling with the air into the up and down spaces of the elevator when it goes up. It can settled down using the gravity by filling with the water again.
Each floor has own magnetic power so the elevator can be stop in the adequate floor using it and can go down through watertight door.
We expect there will be many problems to solve technically in the watertight door.
Because it should be connected with the outside not leaking the single drop into the outside.
However, ecofriendly and chemical free elevator can be came into the world if we can come over those technical problems.
The buildings are getting higher and higher.
We can save the power using ecofriendly elevator and every people who use it feel like swimming in the water. And also it provides the people with attraction in the lobby of the building.