The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 1984
Filed:
Apr. 11, 1983
Leland C Dickey, Omaha, NE (US);
Maya Tayter, Omaha, NE (US);
InterNorth, Inc., Omaha, NE (US);
Abstract
A method for dewatering an aggregate solid substrate is disclosed which comprises placing the substrate between two moving permeable belts, compressing the substrate between the belts, contacting the substrate with a displacement fluid while it is still compressed between the belts such that the substrate and the fluid remain in plug flow while in contact with each other, removing relatively pure water which is expressed by the displacement fluid, further compressing the substrate between the belts to remove excess displacement fluid, and collecting the dewatered substrate. In a preferred embodiment, both the relatively pure water and the excess displacement fluid are collected for recycling, direct disposal, or other use.