US PATENT SUBCLASS 137 / 812
.~.~ By tangential input to axial output (e.g., vortex amplifier)

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.~.~ By tangential input to axial output (e.g., vortex amplifier) {1}
813  DF  .~.~.~> With means to vary input or output of device

DEFINITION

Classification: 137/812

(under subclass 808) Device wherein the flow of fluid into the device is along a straight line that is substantially perpendicular to a radius line from said axis, and the flow of fluid out of the device is along said axis.

(1) Note. The term "input" includes a stream of subatmospheric pressure (i.e., suction) that causes fluid to enter the device tangentially.