发明名称 |
FOERFARANDE OCH ANORDNING FOER ATT GE INFORMATION OM STATUS AV DOERRAR I EN HISSKORG. |
摘要 |
In a multi-deck underground cage (60) each door has a switch (18 to 24) fitted to it to provide a door-open or door-closed signal. The signals identify the respective door and are used to modulate an infrared carrier signal which is transmitted downwardly and reflected to a receiver (3). Information decoded from the carrier signal is displayed to indicate the status of each door at a location remote from the cage. <IMAGE> |
申请公布号 |
FI77209(B) |
申请公布日期 |
1988.10.31 |
申请号 |
FI19830001852 |
申请日期 |
1983.05.24 |
申请人 |
ANGLO AMERICAN CORPORATION OF SOUTH AFRICA LIMITED |
发明人 |
VICKERS, PETER CHARLES;BOUT, BERNARDUS JOHANNES |
分类号 |
B66B19/06 |
主分类号 |
B66B19/06 |
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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