Material or article handling – Plural – static structures for supporting discrete loads and... – Load-underlying members
Patent
1981-03-03
1983-10-25
Reeves, Robert B.
Material or article handling
Plural, static structures for supporting discrete loads and...
Load-underlying members
340686, 414273, B65G 6502
Patent
active
044115776
ABSTRACT:
In a system for controlling the horizontal and vertical alignment of a materials handling vehicle and for transferring articles to and from storage locations of a warehousing system in which several control sensors are positioned on the materials handling vehicle, a monitoring method and circuit for determing the operational status of the sensors by monitoring their status during a selected portion of a cycle of operation when their output is known. In one embodiment sensor outputs are cross checked against each other during a portion of an operating cycle in which the sensors outputs will be at a predetermined relationship to one another.
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Rapistan Division, Lear Siegler, Inc.
Reeves Robert B.
Wacyra Edward M.
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