US PATENT SUBCLASS 137 / 505.16
.~.~.~.~ Liquid transfer

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


137 /   HD   FLUID HANDLING

455  DF  LINE CONDITION CHANGE RESPONSIVE VALVES {11}
494  DF  .~ With separate connected fluid reactor surface {8}
505  DF  .~.~ With opening bias (e.g., pressure regulator) {13}
505.14  DF  .~.~.~ Bias variable during operation {3}
505.16.~.~.~.~ Liquid transfer

DEFINITION

Classification: 137/505.16

(under subclass 505.14) Devices in which the pressure of the

fluid is exerted upon the surface of a liquid free to move in such manner that fluctuations in the pressure of the fluid will transfer the liquid from one receptacle to another or from one portion of a receptacle to another portion thereof, and thereby operate the regulating valve.