Patent ID: 7150412

Claim:
A method of spraying an aerosol spray, comprising: providing a grounded nozzle and an electrode separated by a predetermined axial distance; providing a grounded conductive cover around said nozzle and said electrode, said cover having an opening that allows a directed spray to exit; placing said electrode at a high electrical potential relative to said nozzle, thereby creating an electric field between said nozzle and said electrode; ejecting a liquid or powder from said nozzle towards said electrode to atomize the ejected liquid or powder into aerosol droplets or particles so that in the applied electric field between said nozzle and said electrode, said aerosol droplets or particles obtain an induced electric charge; after the aerosol droplets or particles pass the vicinity of said electrode, forming a directed spray of aerosol droplets or particles having a desired shape and with sufficient momentum and electric charge so that said directed spray of aerosol droplets or particles is deposited on a target.