Patent ID: 6435766
Filing Date: 2002-08-20
Classification: B62D,E01C,E01H,E02F

Abstract:
An apparatus for ground working, comprising:a chassis; three telescopically extendible wheel supports secured to the chassis; the chassis includes telescopically adjustable members extending between at least two of the wheel supports, whereby the distance between the support wheels is adjustable, the telescopically adjustable members providing at least one operative position with the three support wheels in spaced apart relation and a transport position in which at least two of the three support wheels are more closely spaced; a support wheel rotatably mounted to a remote end of each of the telescopically extendible wheel supports, each support wheel having a drive motor to rotate the support wheel and a steering motor to independently steer the support wheel; the telescopically extendible wheel supports providing a means whereby the height and angular orientation of the chassis is adjustable to suit a contour of a ditch; a rotatably mounted drum secured to and underlying the chassis, the drum having radially projecting teeth and being angularly adjustable; and a shield overlying the drum, the shield being angularly adjustable, thereby adjusting the distance that gravel and debris is broadcast by the rotating drum.