US PATENT SUBCLASS 173 / 164
.~ Means to hold and relatively rotate sections of tool shaft

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

213  DF  MEANS TO DRIVE TOOL ABOUT AN AXIS {7}
164.~ Means to hold and relatively rotate sections of tool shaft

DEFINITION

Classification: 173/164

(under subclass 163) Apparatus comprising a means which is specifically described as performing the dual functions of moving a tool about an axis to cause a tool to perform work, and to prevent movement about an axis of a section of tool shaft while moving another section of tool shaft about an axis.

SEE OR SEARCH CLASS

81, Tools, appropriate subclass for a wrench, and particularly

54+, for a machine wrench.