US PATENT SUBCLASS 451 / 86
.~.~.~ And centrifugal particle propulsion means

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
75  DF  .~ Sandblast {13}
85  DF  .~.~ Having tumbling barrel {1}
86.~.~.~ And centrifugal particle propulsion means

DEFINITION

Classification: 451/86

And centrifugal particle propulsion means:

(under subclass 85) Abrading machine wherein the means to propel the stream of abrasive material is a revolving body from which the bits of abrasive material are propelled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

94+, for a mechanical centrifugal propelling means for a sandblast machine, without a tumbling barrel.