(under the class definition) Apparatus comprising impeller* having (1) support* structure, (2) securing means not provided for above, (3) carrier* structure or (4) drag or head resistance reducing means such as a smooth outline member or covering supported on the impeller carrier.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85+, for a float supported impeller.
93+, for hub, fairing or housing structure including means whereby ambient fluid or exhaust gas is caused to flow therethrough.
234, for impeller blading integral with and smoothly blended into the carrier or which comprises, in effect, a shaped hub.
239, for impeller blading having fairing structure supported at the inner end thereof or wherein the blade shank itself is so shaped.
SEE OR SEARCH CLASS 415, Rotary Kinetic Fluid Motors or Pumps,
216.1, for a device comprising a runner* supported on a shaft of specific shape or material and further comprising working fluid* passage or distributing means for the runner, subclass 218.1 for a device including a runner comprising a conical hub having its small diameter portion facing upstream and further including working fluid passage or distributing means for the runner.
