Elevator
OwnerMasami Nomura, Wim Offerhausinventors
Life of this patent
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Abstract
An elevator system which suspends a car 2 and a counterweight 3 through use of a suspension rope (first rope) 6, the rope being passed around and suspended on a (first) turnaround pulley 8 for use with a suspension rope, and the car 2 is driven and caused to ascend or descend by means of a drive rope (second rope) 7 connected to the car 2 or counterweight 3, wherein the drive rope 7 is driven by means of a traction sheave 10 for driving purpose provided at one side of a hoistway 1, and hoisting or lowering action of the car 2 is regulated by means of a brake 17 provided on the turnaround pulley 8 for the suspension rope.
Claims14
An elevator system having a first rope, the rope suspending at one end a car, being routed in a vertical direction within a hoistway, being passed around a first turnaround pulley, and being routed in a changed direction, and suspending at the other end a counterweight, wherein
- a second rope is connected to the counterweight so as to enable vertical movement of the counterweight, routed toward one end of the hoistway, passed around a traction sheave for driving purpose, routed toward the other end of the hoistway, passed around the second turnaround pulley, routed toward the counterweight, and again connected to the counterweight;
- and wherein the first turnaround pulley is equipped with a brake for regulating rotation thereof.
An elevator system having a first rope, the rope suspending at one end a car, being routed in a vertical direction within a hoistway, being passed around a first turnaround pulley, and being routed in a changed direction, and suspending at the other end a counterweight, wherein
- a second rope is connected to the car so as to enable vertical movement of the car, routed toward one end of the hoistway, passed around a traction sheave for driving purpose, routed toward the other end of the hoistway, passed around the second turnaround pulley, routed toward the car, and again connected to the car;
- and wherein the first turnaround pulley is equipped with a brake for regulating rotation thereof.
The elevator system according to claim 9, wherein, when the speed sensor provided on the first turnaround pulley has detected a speed greater than a predetermined speed, the brake provided in the first turnaround pulley is activated, thereby regulating rotation of the first turnaround pulley.
Dependencies are inferred from the claim text.