Sheet feeding or delivering – Feeding – Separators
Patent
1998-12-16
2000-08-01
Bollinger, David H.
Sheet feeding or delivering
Feeding
Separators
271 99, 271104, 271108, 271161, B65H 312
Patent
active
060955139
ABSTRACT:
A sheet feeder for feeding sheets from a sheet stack, having a feed deck for supporting the sheet stack and a pair of spaced apart parallel guide rails on the feed deck for receiving the sheet stack between the guide rails. A sheet feeding assembly is mounted in proximity to a sheet feeding end of the feed deck and is operative to feed individual lowermost sheets from the sheet stack, the sheet feeding assembly including a continuously rotating feed drum having an inner and outer circumference and a plurality of suction openings and a vacuum assembly received in the inner circumference of the feed drum and having at least one rotating cylinder coupled to a vacuum source and movable between an actuated position for drawing air downward through the portion of the feed drum extending above the planar surface of the feed deck and a default position preventing the drawing of air through the feed drum when a vacuum is applied to the at least one rotating cylinder.
REFERENCES:
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patent: 2862709 (1958-12-01), Labombarde
patent: 4269405 (1981-05-01), Mitzel
patent: 4320893 (1982-03-01), Blumle
patent: 4579330 (1986-04-01), Lehmann
patent: 4787619 (1988-11-01), Fuss et al.
patent: 5072922 (1991-12-01), Paulson
patent: 5088717 (1992-02-01), Hamanaka et al.
patent: 5642878 (1997-07-01), Smithe et al.
Allen Robert J.
Janatka Karel
Wright William J
Bollinger David H.
Capelli Christopher J.
Melton Michael E.
Pitney Bowes Inc.
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