US PATENT SUBCLASS 81 / 340
.~.~.~ Serrated surfaces

Current as of: June, 1999
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81 /   HD   TOOLS

300  DF  TOOL JAW(S) POSITIONED BY RELATIVELY MOVABLE PLURAL HANDLES (E.G., PLIERS) {15}
329  DF  .~ With means (nontoggle) to hold jaws against only retrograde movement {4}
339  DF  .~.~ Coacting friction means {1}
340.~.~.~ Serrated surfaces

DEFINITION

Classification: 81/340

(under subclass 339) Tools including roughened contacting faces.

(1) Note. Tools in this subclass rely on the increased frictional characteristics inherent in the roughened mating surfaces for locking the jaws on the work.For tools in which a cog fits into the indentations of a rack member to hold the jaws on the work, see this class, subclass 338.

SEE OR SEARCH THIS CLASS, SUBCLASS:

338, and see (1) Note above.