US PATENT SUBCLASS 418 / 76
.~ Non-working fluid directed to groove


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}
76.~ Non-working fluid directed to groove


DEFINITION

Classification: 418/76

(under subclass 75) Apparatus in which fluid other than working fluid is positively directed to the shallow recess or depression.

(1) Note. Devices having grooves receiving leakage fluid whether working non working or a mixture thereof are not considered proper for classification here. See subclass 75 and subclasses 77 through 82 for similarly grooved devices.