US PATENT SUBCLASS 236 / 12.23
.~.~ Ports closed by valve action

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

Internet Version by PATENTEC © 1999      Terms of Use


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}
12.23.~.~ Ports closed by valve action

DEFINITION

Classification: 236/12.23

Ports closed by valve action:

(under subclass 12.16) Apparatus wherein the movable flow control means moves to and from contiguously along a surface having fluid ports therein for controlling fluid passing therethrough.