US PATENT SUBCLASS 137 / 571
.~ Plural tanks or compartments connected for serial flow

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
571.~ Plural tanks or compartments connected for serial flow {5}
572  DF  .~.~> Separable with valved-connecting passage
573  DF  .~.~> Fluid progresses by zigzag flow
574  DF  .~.~> Plural compartments formed by baffles
575  DF  .~.~> Plural top-to-bottom connected tanks
576  DF  .~.~> With communicating opening in common walls of tanks or compartments

DEFINITION

Classification: 137/571

(under subclass 561) Systems in which two or more tanks or compartments are connected in such manner that all tanks

except the last in the flow sequence deliver fluid only to one other tank and to no other type of receiver.

(1) Note. The containers other than the last in the series may have plural outlets but all the outflow of one must be to one other container, and all may have additional inflow from sources other than a tank.

SEE OR SEARCH THIS CLASS, SUBCLASS:

130+, for siphons with discharge controlling receivers.

255+, for plural tanks of which two or more have outflows to receivers other than to successive tanks, and see subclasses 263 and 265 for plural tanks connected for series-parallel flow.

406+, for communicating measuring vessels for sensing weight of accumulated fluid. 428, for float valves in separate communicating float chambers.

453+, for series flow by barometric feed between a supply tank and a receiver.

SEE OR SEARCH CLASS

222, Dispensing,

133, for dispensers having a separate inflow line connected to a tank and measuring trap system, and subclasses 424.5+ for dispensers having plural series connected compartments where the second one is a trap, i.e., a measuring or separating means receiving or segregating material from the first.