Fluid handling – Systems – With pump
Patent
1990-07-18
1992-01-07
Fox, John C.
Fluid handling
Systems
With pump
137614, 239691, B05B 502
Patent
active
050781685
ABSTRACT:
An apparatus for transferring electrically conductive coating materials such as water-based paint from a source to an electrostatically charged dispenser includes first and second shuttle devices and two large reservoir, piston pumps. The first shuttle device is movable between a neutral position wherein the first shuttle is electrically isolated from the filling station, and a transfer position wherein coating material is transmitted from the source to one of the piston pumps through a coupling device which connects the filling station and first shuttle. The second shuttle device is movable with respect to a discharge station between an neutral position wherein the second shuttle is spaced from the discharge station, and a transfer position wherein coating material is transmitted from the filled piston pump, through another coupling device which connects the second shuttle and discharge station and then to the second piston pump for transmission to one or more electrostatic coating dispensers. Movement of the shuttle is controlled to maintain one of the shuttles in the neutral position while the other is at the transfer position.
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Fox John C.
Nordson Corporation
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