| 摘要 |
<p>An electromechanical, remotely operated auxiliary hoist control and precision load positioner device (111) utilizing a Radio frequency hand controller transceiver unit (206) distal to a radio frequency hoist controller transceiver unit in the device (111) for use with a crane (302) to raise and lower large, heavy, bulky, fragile, or expensive equipment by very gradual means to avoid hang-ups that might otherwise destroy or seriously damage the equipment.</p> |
