US PATENT SUBCLASS 92 / 122
.~.~ Plural angularly related vanes

Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

120  DF  OSCILLATING WORKING MEMBER OR CYLINDER THEREFOR {1}
121  DF  .~ Oscillatory shaft with radially extending vane {4}
122.~.~ Plural angularly related vanes

DEFINITION

Classification: 92/122

(under subclass 121) Apparatus comprising a second blade-like member having one edge thereof secured to the rotary shaft and extending outwardly therefrom in spaced angular relation with the other blade-like member.