CRANE SYSTEM
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United States of America Patent
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Issued Date -
Dec 31, 2015
app pub date -
Jun 19, 2015
filing date -
Jun 30, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A crane system for transporting and optionally lifting and lowering a load has an elongated beam, a carriage that can move along the beam, a grab on the carriage for picking up and carrying a load, and an electrical drive for displacing the carriage along the beam. A sensor can detect a force applied to the load to move the load relative to the beam. An electronic controller connected between the sensor and the drive can shift the carriage on the beam by the drive in a direction and at a rate comparable to a direction and magnitude of the force applied to the load carried by the pickup means relative to the carriage and/or beam and detected by the sensor means.
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