US PATENT SUBCLASS 271 / 105
.~.~.~ Means effecting preliminary operation on sheets in pack


Current as of: June, 1999
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271 /   HD   SHEET FEEDING OR DELIVERING

8.1  DF  FEEDING {8}
18  DF  .~ Separators {8}
90  DF  .~.~ Pneumatic {10}
105.~.~.~ Means effecting preliminary operation on sheets in pack {1}
106  DF  .~.~.~.~> Suction member flexing sheet or portion


DEFINITION

Classification: 271/105

(under subclass 90) Device including a means using a gaseous fluid medium under subatmospheric or above-atmospheric pressure, which means acts on any of the sheets of a stack to separate at least a portion of a sheet from a corresponding portion of an adjacent sheet, but without removing any of the sheets from the stack.

(1) Note. This subclass provides for a device which is a subcombination of a sheet-feeding machine, the device performing an operation that prepares the stack for feeding or removal of sheets therefrom. Examples of such device include, a nozzle issuing a blast of steam or heated air or ionized air, a suction device for removing dust from the sheets of a stack, and means to bend, flex or riffle the margins of the sheets prior to removal.