Patent ID: 8690077

Claim:
A spray apparatus, comprising: a spray nozzle in fluid communication with a pressurized air source, the spray nozzle comprising: a stationary tube in fluid communication with the pressurized air source; a rotor coupled to the stationary tube; a conduit in fluid communication with passages of the stationary tube and the rotor, wherein the conduit is rigid and substantially arched or angled such that an outlet of the conduit is offset a radial distance in a radial direction from the rotor axis, wherein pressurized air ejected from the outlet, during use, rotates the conduit, and wherein the conduit that is substantially arched or angled remains substantially unflexed during rotation, wherein pressurized air ejected from the outlet produces directional components of pressurized air to rotate the rotor; a second tube disposed in the passages of the stationary tube and the rotor; and a hand-held actuator coupled to the stationary tube, wherein the hand-held actuator is in fluid communication with the pressurized air source, the hand-held actuator being configured to allow a user to actuate the hand-held actuator and thereby allow air from the pressurized air source to flow into the conduit and be ejected from the outlet; and a sub-medium supply source coupled to the spray nozzle, the sub-medium supply source in fluid communication with the second tube, and wherein, during use, sub-medium is drawn from the sub-medium supply source through the second tube; wherein the spray nozzle is configured to provide pressurized air and/or sub-medium to a surface to at least partially clean the surface.