US PATENT SUBCLASS 137 / 813
.~.~.~ With means to vary input or output of device

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}
808  DF  .~ Means to cause rotational flow of fluid (e.g., vortex generator) {4}
812  DF  .~.~ By tangential input to axial output (e.g., vortex amplifier) {1}
813.~.~.~ With means to vary input or output of device

DEFINITION

Classification: 137/813

(under subclass 812) Device provided with means to alter the flow of any of the streams of fluid into or out of the device.

(1) Note. The alteration is usually of the amount of fluid flow, but may also be an alteration of path or direction or other condition of flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

825+, for a fluidic device having means to vary the operation of the device.