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:
Jul. 26, 1988
Filed:
Sep. 20, 1985
Applicant:
Inventor:
Werner Stahl, Landau, DE;
Assignee:
Zuricher Beuteltuchfabrik AG, Ruschlikon, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
210771 ; 210391 ; 210411 ; 210489 ; 210386 ; 2105001 ;
Abstract
The invention relates to an improved process and apparatus to produce a filter cake formed by retained solids collected on a filter cloth during filtering. Accordingly, the filter cake is sub-divided into a plurality of filter cake elements which are kept separate from each other at predetermined distances. Further, impermeable zones on the filter cloth are formed around the filter cake elements. The filter cake elements and the impermeable zones are of a size that the filter cake elements can freely contract in any plane without cracking, while the filter cloth between the filter cake elements is covered by the impermeable zones.