Invention Grant
- Patent Title: Method for controlling an elevator and an elevator
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Application No.: US16457097Application Date: 2019-06-28
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Publication No.: US11325813B2Publication Date: 2022-05-10
- Inventor: Antti Hovi , Ari Kattainen , Juha-Matti Aitamurto
- Applicant: KONE Corporation
- Applicant Address: FI Helsinki
- Assignee: KONE Corporation
- Current Assignee: KONE Corporation
- Current Assignee Address: FI Helsinki
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: EP16207343 20161229
- Main IPC: B66B13/22
- IPC: B66B13/22 ; B66B5/00 ; B66B13/08 ; B66B13/14

Abstract:
An elevator includes a car with at least two car doors, each car door being provided with a door contact, a shaft being provided with corresponding landing doors, each landing door being provided with a door contact, each landing door opening in synchronism with the corresponding car door, the door contacts forming part of a safety circuit of the elevator, a car door contact input being connected to a middle point in the safety circuit between a series connection of the car door contacts and a series connection of the landing door contacts. A status information of the car door contact input is monitored in order to determine whether the door contacts are operational or not when the car doors are opened and/or closed with a predetermined time delay at a landing.
Public/Granted literature
- US20190322490A1 METHOD FOR CONTROLLING AN ELEVATOR AND AN ELEVATOR Public/Granted day:2019-10-24
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