Screen for cleaning a fiber suspension

Classifying – separating – and assorting solids – Sifting – With liquid treatment

Reexamination Certificate

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C209S305000

Reexamination Certificate

active

10807879

ABSTRACT:
A screen, for cleaning a fiber suspension, includes at least one separating unit containing a housing, a parabolic rotor, a screen basket, an accept chamber, and a reject outlet. The reject outlet is located in the vicinity of the maximum rotor diameter. The screen also includes one or several devices for interrupting the axial flow located in the vicinity of the maximum rotor diameter.

REFERENCES:
patent: 4268381 (1981-05-01), Hooper
patent: 5096127 (1992-03-01), Young
patent: 5119953 (1992-06-01), Atkeison et al.
patent: 6170769 (2001-01-01), Bergdahl et al.
patent: 6290067 (2001-09-01), Bergdahl et al.
patent: 6571957 (2003-06-01), Doelle et al.

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