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:
Oct. 27, 1987
Filed:
Nov. 18, 1986
Applicant:
Inventor:
Wilhelm Leussler, Frankfurt am Main, DE;
Assignee:
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 96 ; 55 98 ; 55291 ; 55302 ; 55474 ; 210276 ;
Abstract
A horizontal-flow granular filter is provided at its bottom part with openings through which pistons are displaceable in an up-and-down movement to loosen the granular bed during back-flushing of the filter. This reduces the energy cost of cleaning and the tendency toward abrasive deterioration of the granule while also ensuring an improved cleaning action.