A new method for generating and substantially uniformly electrostatically dispersing very fine spheroidally shaped lubricating particles onto the moving surface of a metal or other electrically conductive substrate. A lubricant material in its liquid state is drawn by airflow through a small venturi...http://www.google.ca/patents/US4073966?utm_source=gb-gplus-sharePatent US4073966 - Method for applying lubricating materials to metallic substrates
