US PATENT SUBCLASS 236 / 12.21
.~.~ Axially spaced flow control faces

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}
12.21.~.~ Axially spaced flow control faces {1}
12.22  DF  .~.~.~> Seats face outwardly

DEFINITION

Classification: 236/12.21

Axially spaced flow control faces:

(under subclass 12.16) Apparatus wherein the flow control means comprises a movable valving member having a seating face at each end for coacting with seats on oppositely disposed fluid inlets.