Method and apparatus for damping contact oscillations of rotatin

Details Method and apparatus for damping contact oscillations of rotatin Method and apparatus for damping contact oscillations of rotatin

1997-12-15

2000-12-05

Silverman, Stanley S.

Paper making and fiber liberation

Processes and products

With measuring, inspecting and/or testing

162252, 162361, 100162B, 100170, D21F 1100, B30B 304

Patent

active

061561584

ABSTRACT:
In a method and apparatus for damping contact oscillations of rotating rolls in a paper machine, but notably in a coater, the rolls being held endways in bearings and at least two rolls forming with each other a nip, the damping is carried out actively, the active stimulation (phase-shifted counteroscillation) acting from outside directly and/or indirectly on at least one bearing point of one of the rolls.

REFERENCES:
patent: 2364443 (1944-12-01), Hornbostel
patent: 4597326 (1986-07-01), Kultaranta
patent: 4936207 (1990-06-01), Niskanen et al.
patent: 5077997 (1992-01-01), Wolters et al.
patent: 5201586 (1993-04-01), Zimmermann et al.
patent: 5431261 (1995-07-01), Olgac
patent: 5961899 (1999-10-01), Rossetti et al.

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