AIR FLOW GATING DEVICE
Original Publication Date: 1995-Feb-28
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
A device for providing a pulsing vacuum source in synchronism with a mechanical device for use in a sheet feeder of a copier or printer includes a cylindrical chamber connected to a vacuum source with an arcuate opening on one end and a disc with a mating arcuate opening connected to a rotating shaft. The arcuate openings of the end and the disc align once during each rotation of the shaft creating a pulsing vacuum source.