Vented main roll for press assembly in a paper machine

Details Vented main roll for press assembly in a paper machine Vented main roll for press assembly in a paper machine

2005-04-26

2005-04-26

Griffin, Steven P. (Department: 1731)

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

C162S367000, C162S368000, C162S374000, C492S020000, C100S121000

Reexamination Certificate

active

06884323

ABSTRACT:
A roll for use in a paper machine includes a roll shell having an inner periphery. A roll cover is positioned around the roll shell and has an outer surface. The roll cover and/or the roll shell include at least one main flow channel positioned radially inward from the outer surface and radially outward from the inner periphery. The roll cover includes at least one secondary flow channel in communication with each of the outer surface and at least one main flow channel.

REFERENCES:
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patent: 1596775 (1926-08-01), Stephansen
patent: 1742991 (1930-01-01), Heys
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patent: 3562883 (1971-02-01), Kobayashi
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patent: 5135614 (1992-08-01), Aula et al.
patent: 6029570 (2000-02-01), Matuschczyk
patent: 6616810 (2003-09-01), Brogyanyi et al.

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