US PATENT SUBCLASS 416 / 190
.~.~ Vibration inhibiting or expansion-contraction structure


Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

179  DF  ROTOR HAVING FLOW CONFINING OR DEFLECTING WEB, SHROUD OR CONTINUOUS PASSAGE {4}
189  DF  .~ Axially extending shroud ring or casing {4}
190.~.~ Vibration inhibiting or expansion-contraction structure


DEFINITION

Classification: 416/190

(under subclass 189) Apparatus wherein the flow directing surface includes means for damping impeller vibration or means which facilitate impeller expansion and contraction.