US PATENT SUBCLASS 137 / 329.05
.~.~.~ Different portions of continuous surfaces

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

315  DF  WITH REPAIR, TAPPING OR ASSEMBLY MEANS {6}
329  DF  .~ With provision of alternate wear parts {1}
329.01  DF  .~.~ Valve heads and/or seats {3}
329.05.~.~.~ Different portions of continuous surfaces

DEFINITION

Classification: 137/329.05

(under subclass 329.01) Devices in which different portions of the same surface are adjusted to a certain position to form a valve interface.