Conveyor having self-propelled carriers with a first motor for high speed driving and a second motor for low speed driving
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United States of America Patent
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-
Dec 29, 1992
Grant Date -
N/A
app pub date -
Jan 18, 1990
filing date -
Jan 19, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A conveyor comprising a plurality of self-propelled carriers adapted to run along a rail, the rail having a first drive wheel bearing surface facing upward and a plurality of downward teeth formed at least at a gradient portion of the rail, each of the carriers having a first drive wheel rollable on the wheel bearing surface of the rail, a first electric motor for driving the first drive wheel, a gear meshable with the teeth of the rail and a second electric motor for driving the gear.
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