US PATENT SUBCLASS 402 / 67
.~.~ With screw threaded wedge driving means

Current as of: June, 1999
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402 /   HD   BINDER DEVICE RELEASABLY ENGAGING APERTURE OR NOTCH OF SHEET

60  DF  SHEET RETAINER WITH RELEASABLE KEEPER (E.G., HOLD DOWN, ETC.) {3}
64  DF  .~ Keeper including wedge type securing means {2}
67.~.~ With screw threaded wedge driving means

DEFINITION

Classification: 402/67

(under subclass 64) Device in which the wedge-type securing means for the keeper is actuated by the rotation of a helically grooved member associated therewith.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for screw threaded means which secure or drive telescopic retainers relative to each other.

53, for a sheet retainer which includes a screw threaded securing means.