Drill rig safety shutdown device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 11, 1995
Grant Date -
N/A
app pub date -
May 3, 1994
filing date -
May 3, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A safety shutdown system for a rotary drill rig with a power supply, a support frame and a rotary drill spindle and drill tool connected to the support frame. The drill spindle and tool are driven by a drive train that is connected by a clutch with a declutch mechanism to an internal combustion engine and an engine solenoid with a shut-off switch. A brake with a brake solenoid is also provided on the drive train. An infrared beam transmitter is positioned adjacent to the drill tool and an infrared beam receiver is positioned adjacent to the drill tool and on the opposite side of the drill from the transmitter so that the receiver can receive infrared beams emitted from the transmitter. A controller is connected between the clutch solenoid and the engine solenoid. The controller is activated when the infrared beam between the transmitter and the receiver is interrupted. The controller activates at least one of the clutch engaging solenoid and the engine solenoid to stop the drill spindle and drill tool.
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