Drill rig with carrier/mast safety interlock

Details Drill rig with carrier/mast safety interlock Drill rig with carrier/mast safety interlock

E - Fixed Constructions

21

B

E21B 7/02 (2006.01)

Patent

CA 2161573

A drill rig includes a carrier such as a flatbed truck and a drilling unit carried by the carrier. The drilling unit includes a support frame, a mast and feed frame pivotally mounted on the support frame and movable between a lowered position for road travel and an operative position, and a safety interlock for disabling the engine of the carrier after the mast and/or feed frame have been moved to the operative position until the mast and/or feed frame returned to the fully lowered position.

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