Method and apparatus for supplying white water from a single silo in the formation of a multi-ply web
Patent 4021295 Issued on May 3, 1977. Estimated Expiration Date: 
May 3, 1994. 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 3, 1994. 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 2059184 3165439 3598696 3620914 3839143 InventorAssigneeApplicationNo. 05/574606 filed on 05/05/1975US Classes:162/125, Layers of different properties162/190, White water162/198, With measuring, inspecting and/or testing162/259, Of stock feed to forming device162/263, Measuring, testing, inspecting, indicating or illuminating162/264, White water or broke recovery, recirculation or treatment162/343, With vanes or pulp stream dividing means162/380Slurry supply conditioning or condition maintainingExaminersPrimary: Bashore, S. LeonAssistant: Fisher, Richard V. Attorney, Agent or FirmAbstractThe discharge pipes of a plurality of stock pumps, each supplying a separate concentrated stock slurry, are connected with a pipe containing comparatively dilute stock, commonly called "white water", discharged under pressure from a single fan pump on a single white water silo to supply separate slurries to separate chambers of a multi-ply web forming machine. The stock pumps have smaller capacities and pressure heads compared with a fan pump, thereby providing increased efficiency at required capacity with the minimum of equipment.Field of SearchMulti-layer waterlaid webs or sheetsLayers of different properties Color Organic additive Inorganic additive Fiber Dimension Orientation Separately formed webs subsequently united On common felt or carries (non-mold) White water With measuring, inspecting and/or testing Forming single web between opposed forming surfaces Directing slurry into association with mold Of stock feed to forming device Electric controls or systems Measuring, testing, inspecting, indicating or illuminating White water or broke recovery, recirculation or treatment Plural separate streams of stock applied to mold | |
