Sheet feeding or delivering – Feeding – Separators
Patent
1995-09-28
1998-01-13
Bollinger, David H.
Sheet feeding or delivering
Feeding
Separators
271 98, 271108, B65H 312
Patent
active
057070563
ABSTRACT:
A vacuum corrugation feeder used to feed a wide variety of sheet sizes and stocks includes a variable ratio feedhead plenum. Included within vacuum plenum is an adjustable shutter apparatus that includes a foam roller mounted for rotation on shaft. A shutter member in the form of a plastic sheet is connected to the foam roller and can be wrapped and unwrapped around the foam roller by rotation of knob that is connected to the shaft depending on whether the vacuum pressure is to be high or low. The foam roller is mounted above a plenum plate of the vacuum plenum such that rotation of the knob in a clockwise direction causes the shutter to unwrap from the foam roller and partially cover vacuum holes in the plenum plate and thereby decrease the amount of negative pressure from the vacuum plenum that reaches sheets being fed. Manipulation of the knob in a counterclockwise direction removes the shutter from covering the holes in the plenum plate and thereby increasing the negative pressure to the sheet while simultaneously wrapping the shutter around the foam roller.
REFERENCES:
patent: 4712784 (1987-12-01), Carrell
patent: 4887805 (1989-12-01), Herbert et al.
patent: 5037079 (1991-08-01), Siegel et al.
patent: 5344133 (1994-09-01), Jantsch et al.
patent: 5429348 (1995-07-01), Martin
Rauen David F.
Stevens Mark
Bollinger David H.
Henry II William A.
Xerox Corporation
LandOfFree
Variable ratio feedhead plenum does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable ratio feedhead plenum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable ratio feedhead plenum will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-320234