US PATENT SUBCLASS 72 / 481.9
.~.~.~.~ To hold by binding tool face

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

462  DF  TOOL AND/OR TOOL HOLDER {7}
476  DF  .~ Having unitary tool-face {4}
481.1  DF  .~.~ With support or holder for adjustable or removable tool face {10}
481.3  DF  .~.~.~ Threaded means to move or hold tool face {4}
481.9.~.~.~.~ To hold by binding tool face

DEFINITION

Classification: 72/481.9

To hold by binding tool face:

(under subclass 481.3) Apparatus wherein the end of the helically ridged member directly engages tool face to urge the tool face to forcibly interfit with the support or

holder, thereby to retain the tool face in position with respect thereto.