Fluid handling – Systems – Closed circulating system
Patent
1985-11-18
1987-03-31
Cohan, Alan
Fluid handling
Systems
Closed circulating system
137566, 137567, 239124, B05B 1504
Patent
active
046535322
ABSTRACT:
A circulating system for dispensing fluid, such as paint, is provided with a circulating loop having a first pump. There is no substantial restriction in the circulating loop and a second pump injects additional fluid into the loop as needed to maintain pressure and make up for fluid which is dispensed by drops off of the circulating loop. Valving may be provided such that, either of the two pumps may function by itself in the event of a failure of one of the pumps.
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Cohan Alan
Graco Inc.
Rivell John A.
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