Fluid sprinkling – spraying – and diffusing – With cleaning means – drip collecting – waste disposal or soil... – Nozzle cleaner – flusher or drainer
Patent
1977-03-03
1978-04-11
Love, John J.
Fluid sprinkling, spraying, and diffusing
With cleaning means, drip collecting, waste disposal or soil...
Nozzle cleaner, flusher or drainer
B05B 1502
Patent
active
040834930
ABSTRACT:
A positive check valve control unit is disclosed for use in the color change system of an industrial paint spray installation to insure the proper functioning of the system. The control unit of the invention comprises a plurality of check valves connected to a valve body provided with a common outlet duct. Each check valve includes a passage with a discharge opening for communication with the common outlet duct. A ball check is movably positioned in the passage and is urged by biasing means against the opening to protrude into the common outlet duct and close the passage.
A unique feature of the present invention is the provision of a cam plunger in the common outlet duct, positioned to engage and displace the protruding ball checks against the biasing means, to positively open the passages thereby allowing paint or other process fluids to flow through the check valve and out the outlet duct. Actuating means connected to the cam plunger selectively advances the cam into the ball check displacing position when it is desired to open all the check valves as during a color change cycle.
REFERENCES:
patent: 2679865 (1954-06-01), Griffith
patent: 3348774 (1967-10-01), Wiggins
patent: 3537479 (1970-11-01), Nelson
Love John J.
The Gyromat Corporation
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