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US 2026/0233971 A1Published application
Elevator system having enhanced elevator car deceleration
AssigneeOtis Elevator Company
InventorsRudresha Shivanna, Rahul HR, Anand R
Life of this patent
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Abstract
An elevator system includes a motor configured to drive a traction sheave, the motor including motor windings; a brake configured to slow or stop rotation of the motor, the brake including a brake coil; a reverse bias diode connected in parallel with the brake coil through a latching relay; an external braking circuit connected to the motor windings through a brake contact; a controller configured to control the latching relay and the brake contact to control deceleration of an elevator car.
Claims14
An elevator system comprising:
- a motor configured to drive a traction sheave, the motor including motor windings;
- a brake configured to slow or stop rotation of the motor, the brake including a brake coil;
- a reverse bias diode connected in parallel with the brake coil through a latching relay;
- an external braking circuit connected to the motor windings through a brake contact;
- a controller configured to control the latching relay and the brake contact to control deceleration of an elevator car.
2 more elements
Dependencies are inferred from the claim text.