US PATENT SUBCLASS 416 / 197 A
.~ Air and water motors (natural fluid current)

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

197 R  DF  CUPPED REACTION SURFACE NORMAL TO ROTATION PLANE {3}
197 A.~ Air and water motors (natural fluid current)

Unofficial Alpha Subclasses: R A B C

DEFINITION

Classification: 416/197

(under the class definition) Apparatus wherein the blade* comprises a dished working fluid* impact surface which is arranged normal to the plane of rotation and to the fluid force direction.