US PATENT SUBCLASS 418 / 82
.~ Groove communicates with vane slot

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

75  DF  GROOVED ABUTTING CYLINDER-ROTATING MEMBER END SURFACES {7}
82.~ Groove communicates with vane slot

DEFINITION

Classification: 418/82

(under subclass 75) Apparatus in which the elongated recess or depression lies in a path traversed by the vane slot of a rotating working member for fluid communication therebetween.