Patent ID: 8590809

Claim:
A liquid spray head assembly comprising a barrel and an air cap attached to the barrel, wherein the spray head assembly further comprises: a liquid port for attachment of the barrel to a container of liquid to be sprayed; a liquid passageway in the barrel, wherein the liquid passageway extends from an inlet end at the liquid port to a liquid nozzle opening; a center air chamber that extends from a barrel inlet to a center air outlet, wherein the center air outlet is formed between a nozzle aperture in the air cap that surrounds the liquid nozzle opening of the barrel, wherein the center air chamber comprises a nozzle cavity located between the air cap and the barrel, a barrel cavity located within the barrel, and a plurality of openings formed in the barrel through which air passes into the nozzle cavity from the barrel cavity for delivery to the center air outlet during use of the spray head assembly, and wherein the nozzle cavity, the liquid nozzle opening, and the nozzle aperture are shaped to direct air under greater than atmospheric pressure against liquid flowing out of the liquid nozzle opening to propel the liquid away from the liquid nozzle opening while shaping the liquid into a generally conical stream about an axis extending through the liquid nozzle opening; a fan control air chamber that extends from an inlet end of a fan control barrel passage formed in the barrel to apertures located on horns projecting past the liquid nozzle opening, wherein the apertures in the horns are located on opposite sides of the axis such that air flowing through the fan control air chamber under greater than atmospheric pressure flows against opposite sides of a stream of liquid formed by air flowing through the center air chamber; wherein the center air chamber of the spray head assembly comprises a volume that is greater than a volume of the fan control air chamber; wherein the barrel comprises a barrel frame and a seal element; wherein the barrel frame comprises a connection tab that comprises: an aperture formed in a wall of the barrel frame; a lever element located within the aperture, wherein the lever element comprises a first end connected to the barrel frame, a free end, and a pair of side edges extending from the first end towards the free end; wherein the seal element closes the aperture around the side edges and the free end of the lever element of the connection tab.