US PATENT SUBCLASS 416 / 77
.~.~ Intermeshing or interdigitated working members

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

69  DF  OPERATOR SUPPORTED MANUALLY ACTUATED TYPE {4}
76  DF  .~ Rotary hand crank (e.g., egg beater, etc.) {1}
77.~.~ Intermeshing or interdigitated working members

DEFINITION

Classification: 416/77

(under subclass 76) Apparatus wherein at least two working members are so supported that during operation of the apparatus the moving members describe intersecting or overlapping paths.