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US 12,612,285 B2Granted
Elevator safety system, elevator system, and method for elevator car collision protection
AssigneeKone Corporation
InventorsJuha-Matti Aitamurto, Ari Kattainen
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Abstract
An elevator safety system includes an elevator car safety unit arranged on or at least in mechanical connection, preferably in fixed manner, with an elevator car; at least one distance measurement target; and a distance measurement device mounted on the elevator car for determining a distance between the distance measurement target and the distance measurement device. The elevator car safety unit is arranged in connection with the distance measurement device and is configured to generate an output signal based on the determined distance.
Claims12
An elevator safety system, comprising:
- an elevator car safety controller arranged on or at least in mechanical connection with an elevator car;
- at least one distance measurement target;
- and
- a distance measurement device mounted on the elevator car for determining a distance between the distance measurement target and the distance measurement device,
- wherein the elevator car safety controller is arranged in connection with the distance measurement device and is configured to generate an output signal based on the determined distance,
- wherein the distance measurement target is a dynamic flag arranged to change a position between an active position and an inactive position,
- wherein in the active position, the distance measurement target is arranged so that the distance can be determined by the distance measurement device, and
- wherein the distance measurement device is one of ultrasonic, infrared proximity, or laser distance measurement device.
5 more elements
Dependencies are inferred from the claim text.