Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2007-02-23
2011-10-18
Halpern, Mark (Department: 1741)
Paper making and fiber liberation
Processes and products
Non-fiber additive
Reexamination Certificate
active
08038844
ABSTRACT:
A device for feeding cellulose-containing pulp from a dewatering unit, the dewatered pulp being discharged via an outlet included in the dewatering unit to a reception means positioned below the outlet, whereupon the pulp is transported to a stand pipe via an inlet included in the stand pipe, in which stand pipe the pulp falls freely under the influence of gravity, the reception means being positioned at a higher level than the inlet of the stand pipe. At least one feeding down surface is arranged which extends from the reception means to the inlet of the stand pipe, and the transport of the pulp between the reception means and the inlet of the stand pipe is effected by feeding the pulp downwards along this feeding down surface under the influence of gravity, the pulp being diluted during the feeding of the pulp downwards.
REFERENCES:
patent: 3014589 (1961-12-01), Fryhult
patent: 5842242 (1998-12-01), Antkowiak
patent: 2005/0224198 (2005-10-01), Snekkenes et al.
patent: 1 584 743 (2005-10-01), None
patent: 505 539 (1997-09-01), None
patent: 526 292 (2005-08-01), None
Halpern Mark
Lerner David Littenberg Krumholz & Mentlik LLP
Metso Paper Inc.
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