Height sensor for turret stockpicker
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United States of America Patent
Stats
-
Apr 7, 1992
Grant Date -
N/A
app pub date -
Dec 5, 1989
filing date -
Dec 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital height encoder on a turret stockpicker is used to determine platform height. A pair of fixed reference switches are provided, one to reset a digital height memory to a predetermined height value each time the switch transitions either on or off, the other at a predetermined height near the staging point of telescoping masts for initial calibration of the encoder and for verification of proper operation during normal operations. If the height measurement indicated by the encoder upon the transition of the second or verificaiton switch is not within predetermined limits, an error signal is generated and recalibration will be required. Motion of the platform is also required if the control handle is in the upward direction and the platform has not reached its predetermined upper limits.
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Cited Art Landscape
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