Patent ID: 9120651
Filing Date: 2015-09-01
Classification: B60P,B66C,B66F

Abstract:
1. A crane having progressive function control comprising: a crane including a lengthwise structural member, a pair of front wheels, at least one rear wheel and a crane boom, the front wheels are retained on a front of the lengthwise structural member, the at least one rear wheel is retained at a rear of the lengthwise structural member; an electronic control device including a drive reduction algorithm; a load sensor, a boom angle sensor, a boom length sensor, and a steering angle sensor are connected to said electronic control device, said steering angle sensor determines an angle of the at least one rear wheel; and a drive joy stick is connected to said electronic control device, said drive reduction algorithm receives input from said load sensor, said boom angle sensor, said boom length sensor and said steering angle sensor, said drive reduction algorithm provides a speed reduction factor, said speed reduction factor reduces a maximum travel of the crane, wherein a drive speed, acceleration or deceleration requested by said drive joy stick is retarded by said drive reduction algorithm, if the motion requested by said drive joy stick is greater than a maximum travel value.