US PATENT SUBCLASS 402 / 52
.~.~ Notched or grooved means

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

46  DF  OPPOSED SHEET RETAINERS INVOLVING RELATIVE RECTILINEAR TRAVEL {4}
48  DF  .~ Telescopic retainers with means to telescopically drive and/or secure {4}
52.~.~ Notched or grooved means {1}
53  DF  .~.~.~> Screw threaded

DEFINITION

Classification: 402/52

(under subclass 48) Device wherein the means to drive or secure the opposing telescopic first and second sheet retainers includes at least one recess or aperture in a surface of one of the sheet retainers and means associated with the other sheet retainer for engaging said recess or aperture.

SEE OR SEARCH THIS CLASS, SUBCLASS:

50+, for a device including notched or grooved means to drive or secure the telescoped sheet retainers which means is located remotely from the retainers.

61+, for a device including a keeper* cooperating with a series of notches in a sheet retainer to secure a sheet thereon where motion of the sheet retainer is not intended in the removal of sheet therefrom.

63, for a device including a sheet retainer with a keeper secured thereto by means selectively engaging one or a series of notches in the sheet retainer.