Screen cylinder
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United States of America Patent
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Sep 19, 2000
Grant Date -
N/A
app pub date -
May 28, 1998
filing date -
Nov 28, 1995
priority date (Note) -
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Abstract
The present invention relates to a screen cylinder for screening fiber suspensions of the wood processing industry. The screen cylinder comprises a rotationally symmetric screen surface located on the side of the pulp to be screened, and support rings supporting the screen surface on the opposite side; the screen surface mainly comprising grooves and screen apertures in connection with the grooves, the grooves being comprised of a side surface on the upstream side, a bottom surface, and a side surface on the downstream side, characterized in that the bottom surface of the groove rises towards the side surface of the upstream side.
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