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:
Sep. 09, 1980
Filed:
Oct. 06, 1978
Applicant:
Inventor:
Frank Little, Au Gres, MI (US);
Assignee:
The Harshaw Chemical Company, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
210193 ; 210238 ; 2102 / ; 210344 ; 210345 ; 210347 ; 210486 ;
Abstract
A multiple-plate filter apparatus characterized by a plurality of individual filter units, each having dual filtering surfaces. The filtering surfaces are defined in part by bags made of plastic cloth. During the cleaning cycle, a flotation collar raises the filter unit assembly to the top of the tank so that the individual units can be retrieved without reaching into the solution.