Coating material supply device

Details Coating material supply device Coating material supply device

1988-10-07

1990-04-10

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

222135, 239305, 239DIG14, F04B 4306, B05B 1502

Patent

active

049155997

ABSTRACT:
A coating material supply device in which coating material is pumped out at a predetermined flow rate and supplied at a constant flow rate to a coating machine. The device includes a plurality of double-acting reciprocal pumps, each having an inlet for the coating material supplied from a coating material supply source and an exit for discharging the coating material by the pressure of hydraulic fluid supplied at a constant flow rate from a hydraulic fluid supply source. The exits are connected to coating material selection valves connected in parallel with each other to the coating machine, and connected to switching valves that selectively switch the flow channel for the hydraulic fluid supplied from the hydraulic fluid supply source in response to the switching operation of the coating material selection valves. A flow rate control mechanism for maintaining the flow rate of the hydraulic fluid constant is disposed in the flow channel for the hydraulic fluid, between the hydraulic fluid supply source and the switching valves.

REFERENCES:
patent: 3857513 (1974-12-01), Wiggins
patent: 4265858 (1981-05-01), Grum et al.
patent: 4375865 (1983-03-01), Springer
patent: 4509684 (1985-04-01), Schowiak

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