Patent ID: 9388692
Filing Date: 2016-07-12
CPC Classification: E21B,E21D

Claim Text:
1. A dust collection tube arrangement, the tube arrangement comprising: an outer tube having a hollow configuration; and an inner tube having a hollow configuration, the inner tube having a diameter lesser than that of the outer tube, the inner tube configured to move fore and aft with respect to the outer tube; wherein the outer and inner tubes are configured to provide a passage for dust and airflow, such that a length of the tube arrangement is adjustable based on a position of the inner tube with respect to the outer tube; wherein the tube arrangement is associated with a drill mast of a roof bolter, the outer tube being attached to the drill mast and the inner tube being attached to an extendable portion; and wherein the movement of the inner tube within the outer tube is based on a movement of the drill mast.