Classifying – separating – and assorting solids – Sifting – With liquid treatment
Reexamination Certificate
2005-08-02
2005-08-02
Walsh, Donald P. (Department: 3653)
Classifying, separating, and assorting solids
Sifting
With liquid treatment
C209S305000, C209S306000
Reexamination Certificate
active
06923329
ABSTRACT:
A screen apparatus includes a tank, a first cylidrical screen disposed inside the tank to form a first chamber, and a second cylidrical screen disposed outside the first cylindrical screen. The second cylindrical screen defines a second′ chamber facing the first cylindrical screen and having upper and lower portions communicating with an inlet portion, and second″ chamber. A connection member has a groove facing the second′ chamber at an intermediate portion of the second cylindrical screen, and a passage communicating with the groove for discharging a paper stock. The paper stock flows to the second′ chamber through the upper and lower portions. A part of the paper stock passing through the first and second cylindrical screens is discharged through first and second selection outlet portions, and a part of the paper stock not passing throught the first and second cylindrical screens is discharged through the passage.
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Aikawa Iron Works Co., Ltd.
Kanesaka Manabu
Rodriguez Joseph C
Walsh Donald P.
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