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:
Nov. 09, 1999
Filed:
Mar. 30, 1995
Applicant:
Inventor:
Marcel Norais, Savenay, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B30B / ;
U.S. Cl.
CPC ...
100 37 ; 100112 ; 100116 ; 100125 ; 100207 ; 100218 ; 100244 ; 100251 ;
Abstract
An apparatus and a method using the apparatus are described for the separation by filtration of a solid phase and a liquid phase from a sludge. A pressure is exerted on the sludge with the aid of a piston in a filtration chamber having a filter. The filter is extracted from the chamber and the surface of the filter is swept using a scraper device. The invention can be used for the treatment of liquid manure.