Apparatus for determining the position of an elevator car
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United States of America Patent
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Jan 17, 2006
Grant Date -
May 20, 2004
app pub date -
Jan 21, 2003
filing date -
Feb 2, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for determining the position of an elevator car in an elevator shaft includes a resistance wire installed vertically in the elevator shaft, the wire having a first end supplied with an operating voltage and a second end supplied with a reference voltage; a voltage tap installed on the elevator car, the voltage tap having a contact which rides on the resistance wire between the ends; and a position sensing unit connected to the voltage tap by a measuring line.
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