US PATENT SUBCLASS 137 / 831
.~.~.~ Electrically-actuated element (e.g., electro-mechanical transducer)

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}
825  DF  .~ Means to regulate or vary operation of device {3}
829  DF  .~.~ By movable element {3}
831.~.~.~ Electrically-actuated element (e.g., electro-mechanical transducer)

DEFINITION

Classification: 137/831

(under subclass 829) Device wherein the movement of the member is caused by electrical energy.

(1) Note. The distinction between the patents of this subclass (831) and those of subclass 827 above is that in subclass 827 energy is directly applied to the fluid with no intervening structure, and in this subclass (831) the electrical energy causes the movement of a member which affects the fluid.