US PATENT SUBCLASS 402 / 41
.~.~.~.~ With actuator to open or close retainers

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

26  DF  SHEET RETAINER TRAVELS ARCUATE PATH {2}
29  DF  .~ Travel in plane perpendicular to axis of rotation {3}
31  DF  .~.~ Opposed sheet retainers (e.g., ring binders, etc.) {5}
36  DF  .~.~.~ Hinged on spaced axes {2}
41.~.~.~.~ With actuator to open or close retainers

DEFINITION

Classification: 402/41

(under subclass 36) Device including separate means operable to force the oppositely disposed sheet retainers toward or away from one another.