Flow control valve for continuous discharge centrifugal concentrators
Patent 6796934 Issued on September 28, 2004. Estimated Expiration Date: 
May 21, 2019. 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.
May 21, 2019. 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 1882389 3047008 3090591 3823869 Centrifugal separating apparatus Method and apparatus for centrifugally separating a heavy fraction from a light weight fraction within a pulp material Centrifuge apparatus Apparatus for the separation of particles from a slurry Rotating centrifugal jig with Pulsator Centrifugal jig pulsing system InventorsAssigneeApplicationNo. 09701090 filed on 05/21/1999US Classes:494/56Including discharge-related structure in nature of (a) outlet having device for controlling quantity of flow, (b) element associated with pickup of material and adjustable for varying quality of flow, or (c) static scraper or the like for engaging material in moving bowlExaminersPrimary: Cooley, Charles E.Attorney, Agent or FirmForeign Patent References
International ClassB04B 1104AbstractPrior continuous discharge centrifugal concentrators for separating higher density particles from a slurry have used pinch valves to control the flow of discharge. Such pinch valves tend to be blocked by coarse particles, requiring shutdown of the machine. The present invention provides a muscle-type valve to provide a circular orifice for the valve bore of continuously variable perimeter.Other References
Field of SearchWITH MEANS FOR FILTERINGROTATABLE BOWL Including flexible, removable lining therein Element associated with pickup of material and adjustable for varying quality of flow Including plurality of shelf-like elements located within vertically oriented bowl and extending generally horizontally inwardly from wall thereof Rotating element construction | |
