Sheet feeding or delivering – Feeding – Separators
Reexamination Certificate
2007-08-21
2007-08-21
MacKey, Patrick (Department: 3653)
Sheet feeding or delivering
Feeding
Separators
C271S011000, C271S010020, C271S107000, C271S031000, C271S030100
Reexamination Certificate
active
11230961
ABSTRACT:
A sheet feeder assembly for acquiring and conveying a sheet comprises a plenum connectable to a vacuum source and having an opening facing the sheet to be conveyed, and a slide plate covering the opening. The slide plate has an acquisition surface facing the sheet to be conveyed and defining apertures in communication with the plenum. A drive mechanism is connected to the slide plate and supported within the plenum, and is operable to translate the slide plate relative to the plenum to convey the acquired sheet while maintaining the vacuum through the apertures. The drive mechanism includes a motor and eccentrically driven link connected to a carriage supporting the slide plate. The motor is coupled to a cam element that drives a flapper valve disposed between the plenum and a vacuum duct. The cam element also drives a height sensing arm supported to contact the top of the stack.
REFERENCES:
patent: 3334896 (1967-08-01), Mullin
patent: 3659839 (1972-05-01), Baucke
patent: 3684277 (1972-08-01), Buschmann
patent: 4106765 (1978-08-01), Britt et al.
patent: 4236707 (1980-12-01), Fujimoto
patent: 4627606 (1986-12-01), Moore
patent: 5707056 (1998-01-01), Rauen et al.
patent: 6279896 (2001-08-01), Linder et al.
patent: 6609708 (2003-08-01), Moore et al.
Ford Brian R.
Moore Kenneth P.
Shelhart Timothy G.
MacKey Patrick
Maginot Moore & Beck
McClain Gerald W
Xerox Corporation
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