Paint spraying device
AssigneeEFC Systems, Inc.
InventorGunnar van der Steur
Life of this patent
Estimating the term…
Abstract
A device for spraying paint having a spring activated cartridge in a body. The flow of fan air, atomizing air and paint are controlled by pistons within the cartridge. The fan air and atomizing air exit the body through slots to provide high volume, low pressure. The fan air is distributed uniformly by a baffle flange within a guide ring. The fan air exiting the air cap passes through a conical opening. Compensating air is provided over the surface of the air cap for improved coating. Isolation rings for reduction of electrical leakage are integrally formed in the body.
Claims19
A device for spraying paint comprising:
- a body having a first end and an opposite second end, a nozzle being attached to the first end of the body, a trigger air inlet, a fan air inlet and an atomizing air inlet formed in the body, all of the air inlets being spaced apart from one another,
- means for independently introducing fan air and atomizing air from external sources into the respective fan air inlet and atomizing air inlet, trigger air from an external source being introduced into the trigger air inlet, for controlling the flow of paint, fan air and atomizing air through the device,
- at least one slot for the atomizing air and at least one slot for the fan air formed in the body for exiting of the respective atomizing air and fan air from the first end of the body such that low pressure air is applied to the paint and high volume atomized paint is provided by the device.
A device for spraying paint comprising:
- a body having a first end and an opposite second end, a nozzle being attached to the first end of the body,
- means for introducing fan air and atomizing air into the body,
- means for controlling the flow of paint through the device,
- at least one slot for the atomizing air and at least one slot for the fan air formed in the body for exiting of the respective atomizing air and fan air from the first end of the body such that low pressure air is applied to the paint and high volume atomized paint is provided by the device,
- further comprising a restrictor to generate back pressure to the flow of paint, the restrictor being disposed partially within the body and partially within the nozzle, wherein the restrictor is accessible for ease of removal and replacement.
In a device for spraying paint having a body connected to a nozzle, an air cap covering the nozzle, an air cap nut securing the air cap to the body, means for controlling the flow of paint atomizing air and fan air through the body, an improvement comprising:
- means for directing a portion of the fan air between the air cap and the air cap nut such that fan air passes over an outer surface of the air cap and assists in directing the paint spray.
A device for spraying paint comprising:
- a body having a first end and an opposite second end,
- a single control means for introducing paint, fan air and atomizing air into the body,
- the single control means being a replaceable cartridge being disposed in a center bore in the body, the cartridge having at least one piston, a needle valve, and at least one spring,
- wherein activation of the at least one spring moves the needle valve and the at least one piston simultaneously to introduce paint, atomizing air and fan air into the device.
A device for spraying paint comprising:
- a body having a first end and an opposite second end,
- means for introducing fan air and atomizing air into the body,
- a replaceable cartridge being disposed in a center bore in the body, the cartridge having at least one piston, a needle valve, and at least one spring,
- wherein activation of the at least one spring moves the needle valve and the at least one piston to introduce paint, atomizing air and fan air into the device,
- further comprising an inner piston received within an outer piston, each piston having a respective tapered end, each tapered end being seated against a respective shoulder in the bore in the body, thereby forming a respective seal, and wherein activation of the at least one spring unseats each of the pistons to admit atomizing air and fan air into the device.
Dependencies are inferred from the claim text.