US PATENT SUBCLASS 137 / 250
.~.~.~ Rotary

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

247  DF  WITH LIQUID VALVES OR LIQUID TRAP SEALS {3}
248  DF  .~ Seal for relatively movable valving parts {1}
249  DF  .~.~ Horizontally moving valve {1}
250.~.~.~ Rotary

DEFINITION

Classification: 137/250

(under subclass 249) Apparatus in which the movement in a horizontal plane is rotary.

SEE OR SEARCH THIS CLASS, SUBCLASS:

311, for rotary reversing valves of the regenerative furnace type which do not have a liquid seat.