Passive vacuum transport

Details Passive vacuum transport Passive vacuum transport

2005-11-29

2005-11-29

Bollinger, David H. (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

C271S272000, C271S183000, C271S276000, C271S194000

Reexamination Certificate

active

06969066

ABSTRACT:
An apparatus for improving sheet feeding in a direction of movement to a process station, including: a contact surface having ribs spaced along contact surface in the direction of movement, apertures being defined in the space between each rib; a blower; and an air plenum for supplying a vacuum generated by the blower to the contact surface so that when an leading edge of the sheet passes by the contact surface the vacuum pulls the leading edge of the sheet towards contact surface.

REFERENCES:
patent: 3879123 (1975-04-01), Fisher
patent: 4058037 (1977-11-01), Tashiro et al.
patent: 4493548 (1985-01-01), Ateya
patent: 5118589 (1992-06-01), Aslam et al.
patent: 5228391 (1993-07-01), DeMoore et al.
patent: 6169875 (2001-01-01), Tidrick
patent: 6270075 (2001-08-01), Korhonen et al.
patent: 6272311 (2001-08-01), Baughman et al.
patent: 2004/0175214 (2004-09-01), Chung

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