When you step into an elevator and close the door, you had passed through two doors and are now standing in a box (or the elevator car) inside a vertical passageway (called the lift shaft). One door is in the walls of the floor that you got off, and the other door is part of the car itself.
Inside the shaft are hoisting cables attached to the top of the car. The cables run over a sheave (pulley) connected to an electric motor at the top of the shaft. The other end of the cables is connected to a heavy steel weight called a counterweight. When the car goes up, the counterweight goes down; when the car goes down, the counterweight goes up.
How the counterweight reduces to a minimum the power needed to operate the elevator ...
Weight of counterweight = Weight of the car + (about) ½ of its maximum passenger load
So when the elevator operates, it needs power only to lift the weight of the extra passengers in the car; the rest of the weight is balanced by the counterweight.
Pneumatic elevators work on air pressure (similar to a bank's drive through suction tubes) and hydraulic elevators work on oil/water pressure.
Becasue they ELEVATE you to different stories in a building! i hope that helps. :P
Yes they did.
from what I hear, they still use elevators. Know of a guy who repairs conveyor systems and has had to go down elevators (sometimes it takes an hour) to get underground! This is in 2009!
The company named for the inventor, Elisha Otis, the Otis Elevator Company.
pulley system, much like the cabled elevators work.
of course
no, wall breaches and elevators still work. elevators can't be patched
most of the time
Elevators are usually on the horizontal tail of the aircraft. They effectively change theangle of attack of the wings causing either climb or descent.
Yes.
Pneumatic elevators work on air pressure (similar to a bank's drive through suction tubes) and hydraulic elevators work on oil/water pressure.
Elevators Do Not Work Anymore After The DashBoard Patch!!
Passenger elevators are big pulleys powered by a motor with 6-8 cables or more that pull the elevator cab or the counter weight letting the elevator go up or down.
Elevators Company in Ahmedabad
Some peole have a fear of the germs in elevators, some killers hide out in elevators, some elevators jerk, and they can stop and not budge for hours! I know this because i have a fear of elevators.
There are 6,000 elevators in Italy