US PATENT SUBCLASS 418 / 166
.~.~.~ Intermeshing peripheral surfaces

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

160  DF  MOVING CYLINDER {1}
161  DF  .~ Rotating {5}
164  DF  .~.~ Rotary internal reacting member {3}
166.~.~.~ Intermeshing peripheral surfaces {4}
167  DF  .~.~.~.~> With intake or exhaust passage in internal member
168  DF  .~.~.~.~> Cylinder periphery comprises alternate tooth and passage portions (e.g., cage type) {1}
170  DF  .~.~.~.~> With filler element (e.g., crescent)
171  DF  .~.~.~.~> Inner member has five or more teeth

DEFINITION

Classification: 418/166

(under subclass 164) Apparatus wherein the rotating outer and inner members have matched projecting and recessed surface portions of substantially like dimension which interfit during at least a portion of their rotative movement.