US PATENT SUBCLASS 81 / 57.39
.~.~ Step by step

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
54  DF  .~ Machine {10}
57.39.~.~ Step by step

DEFINITION

Classification: 81/57.39

(under subclass 54) Wrench or screwdriver comprising a clutching element so arranged that the movement of the wrench handle in one direction will drive the work engaging means while movement in the opposite direction permits relative movement between the handle and work engaging means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

60, for ratchet wrench or screwdriver.