Back to results
US 2026/0201778 A1Published application
Apparatus for drilling and positioning a collar support sleeve into a blast hole
OwnerGregory Patchinginventor
Life of this patent
Estimating the term…
Abstract
The invention provides an apparatus for preventing surrounding loose rock fragments from falling or collapsing into a bore hole during drilling and immediately after removal of a drill string from the bore hole. The apparatus includes bore hole sleeve for a bore hole drill, the sleeve including a tube member adapted to be coupled to a mast of a mobile bore hole drill and to be positioned within the collar region of a bore hole, the tube member including a longitudinal internal passage for receiving a drill string therethrough and an external surface for facing outwardly against a wall of the bore hole.
Claims19
A percussive drilling apparatus, including
- a mobile platform;
- a drill string;
- a mast disposed on the platform for supporting the drill string;
- a drill string rotation and driving mechanism for driving the drill string to bore a hole into rock;
- a bore hole sleeve apparatus including a tube member coupled to the mast for positioning within the collar region of a bore hole, the tube member including a longitudinal internal passage that receives the drill string therethrough and an external surface for facing outwardly against a wall of the bore hole wherein the tube member moves axially while remaining coupled to the mast to lower the tube member into the bore hole and to raise the tube member out of the bore hole.
2 more elements
Dependencies are inferred from the claim text.