Variable frequency dewatering assembly

Details Variable frequency dewatering assembly Variable frequency dewatering assembly

2005-03-22

2005-03-22

Griffin, Steven P. (Department: 1731)

Paper making and fiber liberation

Apparatus

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

C162S354000, C162S374000, C162S208000, C162S211000

Reexamination Certificate

active

06869507

ABSTRACT:
A variable frequency foil (VFF) box assembly and mechanisms for moving individual foils/foil beams and individual foil beam sets relative to each other to adjust the frequency of a paper making machine, and method of use are provided. The VFF box assembly allows for continuously and uniformly adjusting the pitch distances of individual foils within foil sets over a finite range, and also adjusting the distance between foil sets during the continuous operation of a paper making machine. Also provided is a variable frequency assembly comprising a combination of dewatering elements such as one or more foil elements and table rolls, a multi-surfaced foil element, and/or an adjustable angle foil element.

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