Screen apparatus
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United States of America Patent
Stats
-
Aug 2, 2005
Grant Date -
Apr 29, 2004
app pub date -
Feb 20, 2003
filing date -
Oct 23, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
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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