Patent ID: 7416056
Filing Date: 2008-08-26
Classification: B66B

Abstract:
1. An elevator system for use during an emergency, the system comprising: a first elevator shaft for housing a first elevator car; a second elevator shaft for housing a second elevator car; a primary pulley system operatively connecting the first elevator car to the second elevator car and facilitating one elevator car to descend its respective elevator shaft while the other elevator car ascends its respective elevator shaft; a secondary pulley system operatively connecting the first elevator car to the second elevator car and facilitating one elevator car to descend its respective elevator shaft while the other elevator car ascends its respective elevator shaft; a first gear system formed on an outer wall of the first elevator car and capable of engaging a rack formed on an inner portion of the first elevator shaft to facilitate movement of the first elevator car along the first elevator shaft when the first gear system is controlled from the inside of the first elevator car; and a second gear system formed on an outer wall of the second elevator car and capable of engaging a rack formed on an inner portion of the second elevator shaft to facilitate movement of the second elevator car along the second elevator shaft when the second gear system is controlled from the inside of the second elevator car.