| 发明名称 |
Electromagnetic/ultrasonic roll-calling/answering (EURA) system for elevator positioning |
| 摘要 |
A positioning system for an elevator cab (37) includes transponder modules (10) having a unique ID for receiving a signal (39) and emitting an ultrasonic signal when the signal is equivalent to the unique ID with a determination of position based on the time duration of the signals.
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| 申请公布号 |
US7493991(B2) |
申请公布日期 |
2009.02.24 |
| 申请号 |
US20050557088 |
申请日期 |
2005.11.16 |
| 申请人 |
OTIS ELEVATOR COMPANY |
发明人 |
OH JAE-HYUK;FINN ALAN M.;PENG PEI-YUAN;HOOTSMANS NORBERT A. M. |
| 分类号 |
B66B1/34 |
主分类号 |
B66B1/34 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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