Roll with vibration damper

Details Roll with vibration damper Roll with vibration damper

1994-05-24

1996-01-30

Eley, Timothy V.

Roll or roller

Rotatable relative to supporting shaft

492 7, 1623581, F16C 1300

Patent

active

054877156

ABSTRACT:
A roll for the preparation or treatment of fiber webs includes a fixed central axis, a roll shell adapted to rotate around the fixed axis and a first chamber disposed between the central axis and the rotatable roll shell. The first chamber is filled with liquid which can transfer a hydraulic supporting force from the central axis to the roll shell. The roll includes a second chamber that is partially filled with air and partially filled with a liquid. Several narrow capillary lines connect the first and second chambers. The capillary characteristic (K) of the capillary lines ranges between about 2.5.times.10.sup.7 m.sup.-2 and about 2.5.times.10.sup.8 m.sup.2.

REFERENCES:
patent: 3196520 (1965-07-01), Appenzeller
patent: 3512475 (1970-05-01), Justus et al.
patent: 4091517 (1978-05-01), Lehmann et al.
patent: 4328744 (1982-05-01), Pav et al.
patent: 4514887 (1985-05-01), Rauf et al.
patent: 4553296 (1985-11-01), Eibe
patent: 4598448 (1986-07-01), Schiel et al.
patent: 4805279 (1989-02-01), Pav
patent: 4848119 (1989-07-01), Pav et al.
patent: 5081759 (1992-01-01), Schiel
patent: 5338279 (1994-08-01), Schiel

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