US PATENT SUBCLASS 137 / 207
.~.~ Surge suppression


Current as of: June, 1999
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137 /   HD   FLUID HANDLING

154  DF  DIVERSE FLUID CONTAINING PRESSURE SYSTEMS {7}
206  DF  .~ Gas pressure storage over or displacement of liquid {5}
207.~.~ Surge suppression


DEFINITION

Classification: 137/207

(under subclass 206) Apparatus wherein the gas is trapped in a dome over a liquid from a liquid distribution system to suppress or absorb pressure surges in the liquid system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

568, and 593, for surge chambers for distribution systems in which a head of liquid supplies the cushion or bias in the system. The chamber may be closed, but air pressure is not relied on for surge suppression.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

26+, for pressure compensators for pipes and tubular conduits. 417, Pumps,

543+, for expansible chamber type pumps having a pulsation damping means of the direct contact compressible fluid type.