Fluid sprinkling – spraying – and diffusing – With system fluid relief or return to supply – By pressure responsive means
Patent
1993-04-28
1994-06-14
Merritt, Karen B.
Fluid sprinkling, spraying, and diffusing
With system fluid relief or return to supply
By pressure responsive means
239127, 251 63, 137885, 200 819R, B05B 1200
Patent
active
053202805
ABSTRACT:
A control system for a mechanically-driven liquid pump coupled to an air spray gun wherein the control system includes an air pressure monitor to detect air flow to the spray gun and an electrically-operated solenoid valve to relieve liquid pressure in the spray gun liquid delivery line when the spray gun is inoperable, and to control a clutch mechanism to drive the pump when the spray gun is operable or when the pump is being primed; the air pressure monitor including a diaphragm-operated switch connected to permit the diaphragm to detect air flow to the spray gun.
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Gray Tommy L.
Murphy Edward P.
Graco Inc.
Merritt Karen B.
LandOfFree
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