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US 4,798,341 AGranted
Spray gun for robot mounting
AssigneeThe DeVilbiss Company
InventorJames J. Gimple
Life of this patent
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AssigneeThe DeVilbiss Company
InventorJames J. Gimple
Estimating the term…
An improved spray gun for mounting on a programmable industrial robot. A housing and manifold are attached to the robot and a spray head is removably attached to the manifold. The manifold includes fluid passages for supplying liquid, atomization air, fan air and pilot air to the spray head and for returning fluid from the spray head. A remotely controlled regulator is located in the manifold liquid passage and a remotely controlled valve is located in the manifold fluid return passage. One or two electrically actuated pilot valves supply pilot air to simultaneously operate atomization air and pattern shaping air control valves in the manifold passages and to operate a trigger valve in the spray head. A power supply module may be located in the housing for applying an electrostatic voltage through the manifold to the spray head for charging the coating liquid.
A spray gun for mounting on a robot, said spray gun comprising a housing having first and second ends, means for attaching said first housing end to such robot, a valve manifold attached to said second housing end, said housing defining a passage for fluid conduits between said first and second housing ends, said valve manifold having a first surface outside said housing and a second surface opening into said housing, a spray head including a trigger valve and means for discharging on atomized liquid in response to the application of pilot air to said trigger valve, said spray head having a body removably attached to said first manifold surface, said manifold defining separate passage means between said first and second manifold surfaces for supplying liquid, atomization air, pattern shaping air and pilot air to said spray gun, normally closed first valve means located in said atomization air passage means responsive to pilot air for supplying atomization air to said spray head, normally closed second valve means located in said pattern shaping air passage means responsive to pilot air for supplying pattern shaping air to said spray head, and normally closed actuating valve means in said spray gun responsive to an electric signal for supplying pilot air simultaneously to said first and second valve means and for supplying pilot air to said trigger valve.
Dependencies are inferred from the claim text.