Patent Number: 6,332,308

Title: Air filtration device for use with roof drill

Abstract: The air filtration device for use with a roof drill has an air intake blockattached to a vertical support abutting the mine roof lateral to the drillhole. A flexible hose attached to a dust filter and a vacuum source forfiltering and collecting dust from the air before exhausting the air tothe atmosphere is connected to the air intake block. The air intake blockhas a plurality of holes defined in at least one face of the block for theintake of dust laden air and an air passage within the block incommunication with the vacuum source provided by the flexible hose. Theholes defined in the air intake block may be covered by screens to preventthe entrance of large particles into the air intake block. The air intakeblock is disposed to provide sufficient suction lateral to thelongitudinal axis of the drill steel in order to remove fine particles ofquartz and dust from the air adjacent the entrance of the drill hole.

Inventors: Miller; Rodney (Virgie, KY)


International Classification: B23Q 11/00 (20060101); E21B 21/00 (20060101); E21B 21/07 (20060101); E21B 21/015 (20060101); B01D 050/00 ()

Expiration Date: 12/25/2014