US PATENT SUBCLASS 451 / 27
.~.~ Tool interior of workpiece

Current as of: June, 1999
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451 /   HD   ABRADING

1  DF  PRECISION DEVICE OR PROCESS - OR WITH CONDITION RESPONSIVE CONTROL {7}
11  DF  .~ With feeding of tool or work holder {6}
27.~.~ Tool interior of workpiece

DEFINITION

Classification: 451/27

Tool interior of workpiece:

(under subclass 11) Subject matter in which the tool moves internal of a workpiece.

(1) Note. The apparatus is commonly referred to as a honing device.