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. 29, 1977
Filed:
Dec. 19, 1975
Applicant:
Inventors:
Eric Paul Austin, Sandbach, EN;
John Trevor Allanson, Alsager, EN;
Assignee:
Simon-Hartley Limited, Stockport, EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210 80 ; 210189 ; 210268 ; 210279 ; 210285 ;
Abstract
A method of filtering a liquid comprising the steps of providing a bed of particulate material, withdrawing material from the base of the bed, supplying replacement particulate material to the bed in such a manner that the bed has a free inclined upper surface, and causing the liquid to be filtered to flow through the bed by entering the same through said inclined upper suface, and apparatus for carrying out such method. Preferably the particulate material is comprised by particles of various sizes whereby a classifying action takes place to give a structured filter bed.