Screening system for fractionating and sizing woodchips
Patent 5503712 Issued on April 2, 1996. Estimated Expiration Date: 
September 16, 2013. 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.
September 16, 2013. 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 References 2966267 3337139 3819050 Wood chip screens Selective delamination of wood chips Method and apparatus for preparing and cleaning fibrous material Feed stream splitter for multiple deck screening machine Vibrating screen apparatus Chip sizing process Screen InventorAssigneeApplicationNo. 121547 filed on 09/16/1993US Classes:162/55, With classifying, separating or screening of pulp (solids from solids)209/672, Spindle or roller having axially spaced, flat-sided circumferential elements (e.g., flanges, disks, wheels, etc.) projecting therefrom209/673, Cylindrical rollers209/678With means moving, or regulating movement of, items along elementsExaminersPrimary: Alvo, SteveAttorney, Agent or FirmInternational ClassesD21D 005/02D21D 005/20 D21D 005/22 AbstractA flow management system and process for providing controlled separation and sizing of an incoming flow of wood chips. A flow management screen is provided in the form of a horizontal disk screen having a variable speed drive, with the drive controlled based upon the flow rate of wood chips to the screen. By controlling the rotational speed of the disks of the horizontal disk screen, the flow separation and sizing to subsequent screening stations can be predicted and controlled. As a result, more consistent output is provided, as well as improved system efficiency and ability to accommodate for varying operational conditions and wear.Other References
Field of SearchWith classifying, separating or screening of pulp (solids from solids)Cylindrical rollers With means moving, or regulating movement of, items along elements Spindle or roller having axially spaced, flat-sided circumferential elements (e.g., flanges, disks, wheels, etc.) projecting therefrom | |
