US PATENT SUBCLASS 137 / 209
.~.~ With gas maintenance or application

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}
209.~.~ With gas maintenance or application {3}
210  DF  .~.~.~> Gas carried by or evolved from liquid {1}
211.5  DF  .~.~.~> Gas injected by liquid pressure or flow
212  DF  .~.~.~> Unitary mounting for gas pressure inlet and liquid outlet

DEFINITION

Classification: 137/209

(under subclass 206) Apparatus wherein means are provided to maintain or apply the gas pressure over or to the liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

145, and 147+, for pressure fluid supply for starting siphons.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

19, for puncturing gas pressure reservoirs for filling dispensers.

222, Dispensing, 209, for resilient wall fluid pressure generating pump or pulsator for dispensers, subclasses 399 for gas pressure supplying reservoirs and 401+ for container mounted fluid pressure generating pump or pulsator.