US PATENT SUBCLASS 81 / 90.5
.~.~.~.~ At least three jaws enclose work

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
90.1  DF  .~ Plural pivoted jaws and handle-lever {6}
90.3  DF  .~.~ Jaws enclose work {2}
90.4  DF  .~.~.~ Including latch to connect jaw to handle-lever {1}
90.5.~.~.~.~ At least three jaws enclose work

DEFINITION

Classification: 81/90.5

At least three jaws enclose work:

(under subclass 90.4) Tool including three or more serially arranged work-gripping elements which form the closed loop.