Abstract: A fluid dispensing device comprises a housing body, a fluid container, a reciprocating piston fluid pump, a primary drive element and a spray tip. The housing body is configured to be carried and supported by an operator of the hand held airless fluid dispensing device during operation. The fluid container is supported by the housing body. The reciprocating piston fluid pump is coupled to the housing body and comprises at least two pumping chambers configured to be actuated out of phase by at least one piston. The primary drive element is coupled to the housing body and connected to the reciprocating piston fluid pump to actuate the at least one piston. The spray tip is connected to an outlet of at least one of the pumping chambers.

Abstract: A handheld airless fluid dispensing device comprises a pump, a drive element and an orifice element. The pump directly pressurizes a fluid. The drive element supplies power to the pump. The orifice element is connected to the pump and atomizes un-thinned architectural coating to a particle size of no greater than approximately 150 microns. The pump generates orifice pressures up to approximately 2.48 MPa and the orifice has an area of approximately 18.7 mm2. In one embodiment, the pump, drive element and orifice element are integrated into a handheld housing. In one embodiment, the pump comprises a reciprocating piston fluid pump comprising at least two pumping chambers configured to be actuated out of phase by at least one piston. In another embodiment, the reciprocating piston fluid pump comprises two pistons having different displacements that are linearly actuated by a wobble assembly driven by a gear reducer and an electric motor.

Abstract: A sprayer attachment for a hand-supported power tool comprises a motion converting mechanism, a pumping mechanism, a spray assembly and a housing. The motion converting mechanism has an input shaft. The pumping mechanism is driven by the motion converting mechanism. The spray assembly is fluidly coupled to the pumping mechanism. The housing assembly couples the motion converting mechanism, the pumping mechanism and the spray assembly. The sprayer attachment may further comprise an anti-rotation bracket extending from the housing. The sprayer attachment may further be coupled to a handheld power tool, such as a cordless drill or a reciprocating saw, with the anti-rotation bracket.

Abstract: A control valve for a fluid dispensing device comprises a valve stem, a valve body, a cap and an adjustment mechanism. The elongate valve stem has a flange. The valve body comprises a valve bore in which the elongate valve stem is configured to translate, and a flow path intersecting the valve bore and into which the valve stem penetrates. The cap is joined to the valve body to receive the valve stem such that the flange is positioned between the valve body and the cap. The adjustment mechanism changes a position of the cap with respect to the valve body to vary a distance between the cap and the flange which adjusts the force, and thereby the pressure at which the valve opens.

Abstract: A fluid dispensing device includes an electrostatic discharge protection system. Accumulation and discharge of electrostatic energy created by operation of the device is reduced or prevented by the electrostatic discharge protection system without an earth ground connection. The electrostatic discharge protection system may include a number of features, such as a static wick, non-conductive components that electrically isolate the spray tip of the device, nonconductive isolation barriers, nonconductive fluid reservoir and suction tube components, a nonconductive coating of a control valve component, and a nonconductive spring retainer of the control valve.

Abstract: A fluid dispensing device comprises a housing body, a reciprocating piston fluid pump, a primary drive element, a wobble assembly and a spray tip. The reciprocating piston fluid pump has a piston disposed within a pumping chamber inside the housing body. The primary drive element is coupled to the housing body to provide a rotary input. The wobble assembly connects the primary drive element to the reciprocating piston fluid pump to convert the rotary input into reciprocating input to the piston. The spray tip connects to an outlet of the pumping chamber.

Abstract: A hose reel swivel (10), comprising a shaft (20) having a fluid passage therein, a swivel housing (22) rotatable about said shaft (20) and a plurality of UHMWPE with fluorocarbon o-ring energized seals (24) located between said shaft (20) and said swivel housing (22). The hose reel swivel (10) allows the user to coil a hose (12) with a reel (14) and store on a paint sprayer (16). This eliminates having to coil a hose by hand, which reduces the time to coil the hose, eliminates hose kinks and stores a coiled hose more compactly and securely. The swivel design provides longer life.

Abstract: The main upright (14) on a paint sprayer (10) frame (12) is provided with a hose guide (16) and a swivel (18). Attached to the swivel (18) is a generally rectangular hose reel (20) having a retractable handle (22) and a releasable rotation lock (24). Reel (20) is formed from a generally rectangular (mirroring the sprayer frame) loop (20a) having secondary loops (20b) attached thereto. A swivel plate (20c) bisects loop (20a). The upper end of loop (20a) may be used as a handle for the sprayer (10).

Abstract: A handheld airless fluid dispensing device comprises a pump, a drive element and an orifice element. The pump directly pressurizes a fluid. The drive element supplies power to the pump. The orifice element is connected to the pump and atomizes un-thinned architectural coating to a particle size of no greater than approximately 150 microns. The pump generates orifice pressures up to approximately 2.48 MPa and the orifice has an area of approximately 18.7 mm2. In one embodiment, the pump, drive element and orifice element are integrated into a handheld housing. In one embodiment, the pump comprises a reciprocating piston fluid pump comprising at least two pumping chambers configured to be actuated out of phase by at least one piston. In another embodiment, the reciprocating piston fluid pump comprises two pistons having different displacements that are linearly actuated by a wobble assembly driven by a gear reducer and an electric motor.