Classifying – separating – and assorting solids – Sifting – With liquid treatment
Reexamination Certificate
2007-11-20
2007-11-20
Rodriguez, Joseph (Department: 3653)
Classifying, separating, and assorting solids
Sifting
With liquid treatment
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.
Alix Yale & Ristas, LLP
Andritz AG
Rodriguez Joseph
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