E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 12/00 (2006.01) E21B 41/00 (2006.01)
Patent
CA 2395963
A Percussive or Rotary Rock Drill Guard is a guard designed to keep any driller or operator away from the rotating drill rod. The guard is mounted on any rock drill mast and connected to the rotation lever of the drill. Doors that are mounted on the mast will automatically encase the complete drill and drill rod upon activating any rotation lever.
Denis Normand Donald
Techni Drill Inc.
LandOfFree
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