F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 1/00 (2006.01) B05B 5/16 (2006.01) B05B 12/14 (2006.01) F04B 19/04 (2006.01) F04B 19/22 (2006.01)
Patent
CA 2044827
APPARATUS FOR ELECTROSTATICALLY ISOLATING AND PUMPING CONDUCTIVE COATING MATERIALS Abstract of the Disclosure An apparatus for transferring electrically conductive coating materials such as water-based paint from a source to an electrostatically charged dispen- ser includes first and second shuttle devices and two large reservoir, piston pumps each having structure for preventing contamination of the coating material and pressure build-up at their piston heads. The first shuttle device is movable between a neutral position wherein it is electrically isolated from a filling station connected to the coating material source, and a transfer position wherein coating material is transmitted 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 a 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 trans- mission to one or more electrostatic coating dispen- sers. Movement of the shuttle is controlled to maintain one of the shuttles in the neutral position while the other is at the transfer position.
Coeling Kenneth J.
Hartle Ronald J.
Konieczynski Ronald D.
Corporation Nordson
Macrae & Co.
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