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:
Jun. 05, 2001
Filed:
Feb. 18, 1998
Toray Industries, Inc., , JP;
Abstract
A filter cloth comprising at least a base layer and a filtering layer, characterized in that the ratio T/L of the thickness (T) of the filtering layer to the length (L) of fibers of fiber bundles constituting the filtering layer is 0.02 to 0.7 and the sum of a projected area of the fibers onto the base layer surface is 8 to 350 times the area of the base layer surface and, a filter cloth characterized in being constituted with at least a base layer and a filtering layer mainly composed of fiber bundles of crimped fiber ratio over 5%. Again, a belt type solid-liquid separating machine characterized in being constituted with at least a mechanism in which the filter cloth of this invention is provided on a plurality of rollers and is moved therearound, a mechanism for supplying unfiltered water onto an inclined belt, a mechanism for sucking supplied unfiltered water from the rear surface of the belt, a mechanism for dewatering a cake formed on the belt by pressurizing the same, a mechanism for peeling off the dewatered cake and a mechanism for washing the belt. In addition, a filtering machine characterized in being constituted with at least a mechanism for partitioning inside and outside portions by providing the filter cloth of this invention around a drum or a disc-like structural member, a mechanism for passing water through the filter cloth by supplying unfiltered water to the partitioned outside or inside portion, a mechanism for washing the filter cloth from the unfiltered water supply side and/or the other side and a mechanism for discharging concentrated water produced by the washing.