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US 6,199,666 B1Granted
Elevator drive machine
AssigneeKone Corporation
InventorsEsko Aulanko, Harri Hakala, Jorma Mustalahti, Tauno Pajala
Life of this patent
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Abstract
An elevator drive machine includes a traction sheave and an electromechanical apparatus having at least two electric motors for driving the traction sheave. The traction sheave and the weight applied to it via the elevator ropes are supported by bearings between the stators and rotors of the electric motors driving the traction sheave of the drive machine.
Claims14
A gearless elevator drive machine, comprising:
- a traction sheave;
- and
- an electromechanical apparatus including two electric motors, each having a rotor and a stator, for driving rotation of said traction sheave,
- wherein said traction sheave is positioned between the rotors of said two electric motors along an axis of rotation of said traction sheave and said traction sheave and weight applied thereto via elevator ropes attached to an elevator car and a counterweight is, in a radial direction of the drive machine, substantially supported by bearings between stators and rotors of said electric motors driving said traction sheave of the drive machine.
1 more element
Dependencies are inferred from the claim text.