US PATENT SUBCLASS 446 / 217
.~ Having fluid-driven rotatable radial blade (e.g., pinwheel)

Current as of: June, 1999
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446 /   HD   AMUSEMENT DEVICES: TOYS

176  DF  OPERATED BY RELATIVELY MOVING FLUID OR PRESSURE DIFFERENTIAL {9}
217.~ Having fluid-driven rotatable radial blade (e.g., pinwheel) {1}
218  DF  .~.~> Rollable or having plural rotating bladed members

DEFINITION

Classification: 446/217

Having fluid-driven rotating radial blades (e.g., pinwheel):

(under subclass 176) Device including a plurality of fluid reaction surfaces extending radially from an axis about which they are caused to revolve by the energy of the fluid.

SEE OR SEARCH CLASS

416, Fluid Reaction Surfaces (i.e., Impellers), appropriate subclasses for a patent directed to the fluid reaction surfaces (blades), per se, and see

69, for an operator supported manually actuated bladed member (e.g., fan).