Nozzle for electrostatic dusting devices

Claim 1

A NOZZLE USED IN CONJUNCTION WITH AN ELECTROSTATIC DUSTING DEVICE COMPRISING A HOSE, A DUST RESERVOIR, A BLOWER AND A FRUSTRO-CONICAL ELECTRODE, SAID HOSE BEING CONNECTED AT ONE END TO SAID DUST RESERVOIR AND BLOWER AND AT THE OTHER END TO SAID FRUSTO-CONICAL ELECTRODE, A POWER SUPPLY HAVING A REFERENCE GROUND, AN ELECTRODE CENTRALLY DISPOSED AND ADJUSTABLY MOUNTED WITHIN SAID FRUSTRO-CONICAL ELECTRODE AND CONNECTED TO SAID POWER SUPPLY, A GROUNDING MEANS CONNECTING SAID FRUSTRO-CONICAL ELECTRODE TO SAID REFERENCE GROUND OF SAID POWER SUPPLY, A PROPELLER CENTRALLY MOUNTED WITHIN AND IN AXIAL ALIGNMENT WITH THE LONGITUDINAL AXIS OF THE HOSE, AND A BRUSH MEANS SECURED TO SAID PROPELLER AT ONE END AND BEARING AGAINST THE INTERIOR OF THE FRUSTRO-CONICAL ELECTRODE AT THE OTHER END WHEREBY WHEN DUST LADEN AIR IS FORCED THROUGH THE HOSE BY THE BLOWER, THE PROPELLER WILL BECOME ACTIVATED CAUSING THE BRUSH TO ROTATE ABOUT THE INTERIOR OF THE FRUSTRO-CONICAL ELECTRODE THEREBY MAINTAINING SAID ELECTRODE IN A CLEAN CONDITION.