Patent ID: 8506674
Filing Date: 2013-08-13
Classification: B03C

Abstract:
1. A method of cleaning a dust filter, comprising: (a) applying a negative electrical potential to a first electrode disposed in a first area of a dust filter and applying a positive electrical potential to a second electrode disposed in a second area of the dust filter, wherein a voltage differential between the first electrode and the second electrode is sufficient to cause electrostatic movement of dust from the first area of the dust filter to the second area of the dust filter; and then (b) applying a negative electrical potential to the second electrode and applying a positive electrical potential to a third electrode disposed in a third area of the dust filter, wherein a voltage differential between the second electrode and the third electrode is sufficient to cause electrostatic movement of dust from the second area of the dust filter to the third area of the dust filter, and wherein the first, second and third areas are generally linearly arranged with the second area between the first and third areas.