Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B66
HOISTING; LIFTING; HAULING
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B66B
ELEVATORS; ESCALATORS OR MOVING WALKWAYS
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1/00
Control systems of elevators in general
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B66B1/24
Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
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B66B1/30
effective on driving gear; , e.g. acting on power electronics, on inverter or rectifier controlled motor
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B66B1/308
with AC powered elevator drive
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