Manual sensing of wire guidance signal
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United States of America Patent
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-
Jul 16, 1991
Grant Date -
N/A
app pub date -
Dec 6, 1989
filing date -
Dec 6, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wire guidance system for a materials handling vehicle, such as a turret stockpicker, detects an alternating signal carried by a buried wire by means of two sets of four sensors each carried at either end of the vehicle. An alarm, including both audio and visual means, having a first characteristic is generated if the vehicle is equipped with a functioning wire guidance system; an alarm having a second characteristic is generated when an active wire is detected and wire guidance has not been activated.
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