US PATENT SUBCLASS 222 / 264
.~.~ Rotors with concentrically arranged sets of axial trap chambers

Current as of: June, 1999
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222 /   HD   DISPENSING

251  DF  WITH DISCHARGE ASSISTANT (E.G., IMPELLER, PUMP, CONVEYER, MOVABLE TRAP CHAMBER, ETC.) {30}
252  DF  .~ Plural {9}
264.~.~ Rotors with concentrically arranged sets of axial trap chambers

DEFINITION

Classification: 222/264

(under subclass 252) Dispensers having two or more co-axial rotors with axially opening trap chambers or a single rotor with two or more concentric rows of such trap chambers, so that two or more discharge paths for material are provided.

(1) Note. Where there are co-axial rotors they may lie in the same plane, as one being an annulus surrounding the other.