1971-02-01

Electronic Load and Angle Measuring System for Tower Cranes 710706

While using a typical tower crane, it is frequently impossible for the machine's operator to determine visually the position or movement of the crane's boom or hook. Electronic monitors have been developed to measure and display continuously to the operator the boom angle and the load weight. Included in the monitors are operator-controlled alarm systems to provide visual and audible alarms at any desired boom angle or load magnitude. Although application is described on tower cranes, the system can be applied to most types of cable or hydraulic cranes.

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