Patent ID: 7715749
Filing Date: 2010-05-11
Classification: G03G

Abstract:
1. A corona grid-cleaning assembly which comprises, in an operative relationship: at least one brush cleaner, at least one cleaner pad, a corona grid, a corona wire, an automatic hands-free transport system comprising a lead shaft attached to a source of power, said lead shaft having windings there around which contact a holder and move said holder along a length of said corona grid-cleaning assembly, said holder having at its lower portion a tubular section and configured to support said brush cleaner and said cleaner pad, said lead shaft having terminal portions and windings which do not extend along an entire length of the lead shaft, and having springs at each of its terminal portions through which said lead shaft extends, said springs when in use are in operative contact with a terminal portion of said holder, said springs configured to prevent said holder from contacting an end portion of said assembly, and wherein said windings extend along all but 2-10% of a length of said lead shaft.