Fresh air intake system for overburden drills
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United States of America Patent
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Sep 26, 2017
Issued Date -
N/A
app pub date -
Jun 16, 2010
filing date -
Jun 24, 2009
priority date (Note) -
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Abstract
A fresh air intake system for overburden drills with an air intake assembly mounted along the drill mast to access air at the greatest practical height above ground, an air filter assembly, and a pressure blower/circulating fan assembly to supply the cleanest air practicable into the operator's cab under positive pressure. The height of the drill mast is utilized to access cleaner air at greater heights, with the air inlet located strategically toward the top of the mast. The intake assembly includes a rain cap, an intake tube mounted along the drill mast, and a flexible section at the drill mast pivot point to accommodate raising and lowering of the mast without interference or obstruction. The air filter assembly is mounted in series with the pressure blower/circulating fan assembly, which operates with negative inlet pressure and supplies filtered air under positive pressure into the enclosed cab.
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