Portable airless fluid dispensing apparatus and valves

A handheld fluid dispensing apparatus, the handheld fluid dispensing apparatus comprising:

• a housing, the housing including a handle;
• an electric motor positioned within the housing, the electrical motor operable to output a rotational motion;
• a drive, positioned within the housing, operably coupled to the electric motor, the drive operable to convert the rotational motion to a reciprocating linear motion;
• an actuator disposed on the housing adjacent the handle, the actuator operable to actuate the electric motor;
• a fluid container mounted to the housing, the fluid container operable to receive and retain a fluid;
• a pump, positioned within the housing, operably coupled to drive, the pump operable draw the fluid from the fluid container, pressurize the fluid, and drive the fluid through a stem-less valve to a spray orifice, positioned downstream from the stem-less valve;
• the stem-less valve comprising:
• a valve body, the valve body being generally cylindrical;
• a fluid conduit, operable to allow a flow of the fluid from the pump, at least partially through the valve body, to the spray orifice;
• a movable plug disposed at least partially within the valve body;
• a seat, shaped to conform to a shape of the movable plug;
• a spring disposed within the valve body, wherein:
• the spring biases the movable plug against the seat to prevent the fluid from flowing through the fluid conduit to the spray orifice when a fluid pressure is below a spray pressure threshold;
• and
• the spring compresses when the fluid pressure reaches or exceeds the spray pressure threshold, at least partially retracting the movable plug away from the seat, and allowing the fluid to flow through the fluid conduit to the spray orifice.

A handheld fluid dispensing apparatus, the handheld fluid dispensing apparatus comprising:

• a housing, the housing including a handle;
• an electric motor positioned within the housing, the electrical motor operable to output a rotational motion;
• a drive, positioned within the housing, operably coupled to the electric motor, the drive operable to convert the rotational motion to a reciprocating linear motion;
• an actuator disposed on the housing adjacent the handle, the actuator operable to actuate the electric motor;
• a fluid container mounted to the housing, the fluid container operable to receive and retain a fluid;
• a pump, positioned within the housing, operably coupled to drive, the pump operable draw the fluid from the fluid container, pressurize the fluid, and drive the fluid downstream of the pump atomize the fluid;
• a relief valve connected to and positioned downstream of the pump, the relief valve operable to prime the pump and redirect the fluid back into the fluid container when a fluid pressure output by the pump exceeds a relief pressure threshold;
• a spray valve, connected to and positioned downstream of the relief valve;
• a spray tip assembly, connected to and positioned downstream of the spray valve, the spray tip assembly included a spray orifice operable to atomize the fluid,
• wherein the spray valve comprises:
• a valve body, the valve body being generally cylindrical;
• a fluid conduit, operable to allow a flow of the fluid from the relief valve, at least partially through the valve body, to the spray orifice of the spray tip assembly;
• a frustoconical plug disposed at an end of a stem, wherein the frustoconical plug and the stem are positioned entirely within the valve body;
• a seat, shaped to conform to a shape of the frustoconical plug;
• a spring disposed around the stem and positioned within the valve body, wherein:
• the spring biases the frustoconial plug against the seat to prevent the fluid from flowing through the fluid conduit to the spray orifice when a fluid pressure is below a spray pressure threshold;
• and
• the spring compresses when the fluid pressure reaches or exceeds the spray pressure threshold, at least partially retracting the frustoconical plug and stem away from the seat, and allowing the fluid to flow through the fluid conduit to the spray orifice.