ELEVATOR SYSTEMS
DE602021042120T2Active Publication Date: 2025-11-12OTIS ELEVATOR CO
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Patent Information
- Application Number
- DE602021042120
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-05-28
- Publication Date
- 2025-11-12
- Estimated Expiration
- 2041-05-28
AI Technical Summary
Technical Problem
Passengers are often trapped in an elevator car due to the prevention of door opening when a safety switch is triggered, even if the car is stopped a short distance from the landing, which is undesirable.
Method used
An elevator system that allows the door to open if the car is within an 'unlocking zone' where the car and landing floors are aligned or misaligned by a defined amount, using safety switches and a position reference system to determine the car's position and safety status, and includes a warning device for misalignment.
Benefits of technology
Minimizes passenger trapping by allowing safe exit even when the car is misaligned with the landing, while ensuring safety by preventing door opening during hazardous conditions.
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