Medium consistency flat disk pressure screen
Patent 4543181 Issued on September 24, 1985. Estimated Expiration Date: 
December 16, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 16, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 06/450434 filed on 12/16/1982US Classes:209/273, Stationary sifters209/358, Rotating209/379, Clearers209/389RotatingExaminersPrimary: Lutter, Frank W.Assistant: Bond, Wm. Attorney, Agent or FirmInternational ClassesB01D 29/03 (20060101)B01D 29/01 (20060101) D21D 5/04 (20060101) D21D 5/00 (20060101) AbstractA method and apparatus for screening pulp, or like suspensions, having a consistency of about 6-15 percent. The pulp is passed into a chamber having a flat plate screen, and the pulp is fluidized by rotation of a disk, with vanes, mounted adjacent the screen. The disk may be constructed to allow circulation of rejects within the chamber. The chamber may be in communication with a second chamber having a similar screen and disk arrangement, with the rejects outlet from the second chamber in communication with the suspension inlet to the first chamber. | |
