US PATENT SUBCLASS 137 / 840
.~.~ And vent passage(s)

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}
834  DF  .~ Device including passages having V over T configuration {5}
840.~.~ And vent passage(s)

DEFINITION

Classification: 137/840

(under subclass 834) Device further provided with a sixth passage joining any of said other passages or said common zone to ambient surroundings for the purpose of "bleeding" excess pressure within the device.