Patent ID: 9267245
Filing Date: 2016-02-23
CPC Classification: B62D,E01C,E02D

Claim Text:
1. An articulated roller machine comprising: a chassis comprising a front subframe and a rear subframe coupled together at a pivot connection; a front drum assembly rotatably mounted to the front subframe and a rear drum assembly rotatably mounted to the rear subframe, each of the front and rear drum assemblies comprising respective left and right drums, wherein the drums are configured to compact the ground over which the roller machine travels; a position sensor for detecting a relative position difference between the front subframe and the rear subframe and generating a relative position value; and a controller configured to receive the relative position value for adjusting at least one of a speed and a direction of rotation of the drums of each of the drum assemblies relative to one another and independently of the drums of the other drum assembly to provide movement and steering for the roller machine.