US PATENT SUBCLASS 137 / 821
.~.~.~.~ With pulsed control-input signal

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

803  DF  FLOW AFFECTED BY FLUID CONTACT, ENERGY FIELD OR COANDA EFFECT (E.G., PURE FLUID DEVICE OR SYSTEM) {11}
814  DF  .~ System comprising plural fluidic devices or stages {1}
815  DF  .~.~ Plural power inputs (e.g., parallel inputs) {3}
819  DF  .~.~.~ To cascaded plural devices {2}
821.~.~.~.~ With pulsed control-input signal

DEFINITION

Classification: 137/821

(under subclass 819) System wherein at least one of the fluidic devices has control input that is in the form of a series of short bursts of fluid timed in a predetermined sequence or duration.

(1) Note. Many of the devices of this subclass are known as "fluidic oscillator" devices or systems.