The subject invention relates to a power
sprayer that can be conveniently used by both professionals and amateurs. This power
sprayer offers flexibility of movement because it can be battery operated. It also is designed to eliminate the need for cleaning its
spray nozzle after being used. The media being sprayed can also be easily changed quickly. For instance, paint colors can be changed quickly and repeatedly by simply changing the media cartridges that are adapted for simple attachment to the
sprayer. The media cartridges used in conjunction with the sprayers of this invention can also eliminate the inconvenience associated with refilling conventional power sprayers with a desired media. The present invention more specifically discloses a media
cartridge system for a sprayer comprising: (a) a media container, (b) a self-cleaning
nozzle, (c) a media shut-off means, (d) a primary media atomizing aperture in a configuration relative to the self-cleaning
nozzle, (e) a movable media containment member within the media container, (f) a
gas transfer interface, and (g) a
power unit engagement means. The subject invention further discloses a sprayer which is comprised of (1) an electrical power source, (2) an
electric motor, (3) a pump which is driven by the motor, (4) an output, (5) an
electrical control switch, (6) a media
cartridge air transfer interface, (7) a media
cartridge engagement means, and (8) a media cartridge
system which is comprised of (a) a media container, (b) a self-cleaning
nozzle, (c) a media shut-off means, (d) a primary media atomizing aperture in a configuration relative to the self-cleaning nozzle, (e) a movable media containment member within the media container, (f) a
gas transfer interface, and (g) a
power unit engagement means. The present invention also reveals a sprayer which is comprised of (1) a
power unit which includes (a) an electrical power source, (b) an
electric motor, (c) a pump which is driven by the motor, (d) an output control, and (e) an
electrical control switch, (2) a nozzle unit which includes (a) a media cartridge air transfer interface, (b) a power unit engagement means, (c) a
gas transfer interface, and (3) a media container wherein the media container includes (a) a media cartridge engagement means, (b) a movable media containment member within the media container, (c) a media container air transfer interface and (d) a media supply line interface.