US PATENT SUBCLASS 416 / 124
.~ Coaxial rotation


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

120  DF  PLURAL IMPELLERS HAVING RELATIVE MOVEMENT OR INDEPENDENT SUPPORTS {5}
124.~ Coaxial rotation {4}
125  DF  .~.~> Individual prime mover
126  DF  .~.~> Concentric working members
127  DF  .~.~> Concurrent adjustment
128  DF  .~.~> Oppositely rotating impellers {1}


DEFINITION

Classification: 416/124

(under subclass 120) Apparatus wherein the plural impellers are supported for rotation about a common axis.