US PATENT SUBCLASS 236 / 12.18
.~.~.~ Tubular valve member

Current as of: June, 1999
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236 /   HD   AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION

12.1  DF  MIXING FLUID OF DISSIMILAR TEMPERATURE {6}
12.16  DF  .~ Having oscillating or reciprocating valve {4}
12.17  DF  .~.~ Valving member moves about an axis {2}
12.18.~.~.~ Tubular valve member

DEFINITION

Classification: 236/12.18

Tubular valve member:

(under subclass 12.17) Apparatus wherein the flow control means comprises a hollow sleeve or cylinder like member or portion.

(1) Note. A cup shape flow control means is proper for classification here if the sleeve or cylinder portion performs a flow control function. Otherwise classification will be based on other features.