Dual sheave rope climber using flat flexible ropes

An elevator system comprising:

• a vertical hoistway;
• an elevator car, disposed within said hoistway, including first and second spaced apart sheaves having parallel axes or rotation;
• and
• a first and second flat rope, each flat rope extending vertically in the hoistway through a range of travel of said car, each flat rope secured at a vertically upward end thereof wherein said first flat rope passes laterally under said first sheave, vertically upward between said first and second sheaves, and laterally over said second sheave, wherein said second flat rope passes laterally under said second sheave, vertically between said second and first sheaves, and laterally over said first sheave;
• and
• means for driving one of said first and second sheave.