Patent ID: 6902758

Claim:
A method for spraying a coating on a mold, the mold having a first difficult-to-reach undercut surface which is not directly visible from an external view of the mold, the method comprising: providing an applicator having a body section and a spray head, the spray head having an angled body portion and a non-angled portion such that the spray head defines a fixed oblique angle between the angled and non-angled portions, the spray head having threads on the non-angled portion for threadably securing to threads on the body section, the body section and spray head having outer dimensions sufficiently small in combination with the oblique angle to enhance spraying of the coating onto the difficult-to-reach surfaces of the mold, the body section and spray head each including a central passageway for delivering a liquid medium and an outer passageway surrounding the central passageway for delivering a gaseous medium, the spray head further including a spray cap secured to an outlet end of the spray head by a spray cap lock, the spray cap lock having threads for securing to threads on the spray head, the spray cap lock defining an outer boundary of the spray head; atomizing a fluid by providing the gaseous medium to the outer passageway and the liquid medium to the central passageway of the body portion such that the liquid medium collides with the gaseous medium inside the outer boundary defined by the spray cap lock; and positioning the spray head to spray the atomized fluid within the mold in a head-on position sufficient to squarely spray the atomized fluid onto the mold and the first undercut surface.