US PATENT SUBCLASS 81 / 432
.~.~.~ Including vibratory work supporting member

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
54  DF  .~ Machine {10}
57.37  DF  .~.~ With feed or magazine means {6}
432.~.~.~ Including vibratory work supporting member

DEFINITION

Classification: 81/432

Including vibratory work supporting member:

(under subclass 57.37) Feed means including a work-supporting member which is vibrated (i.e., rapidly moved insignificant, minute distances) during a segment of the feeding operation to convey pieces of work to the work-engaging and strain-exerting portion of the wrench or screwdriver.