The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 1995
Filed:
May. 03, 1994
Stephen B Adkins, Sr, Snellville, GA (US);
Phillip L Myers, Lithonia, GA (US);
Longyear Company, Stone Mountain, GA (US);
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.