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. 22, 1991
Filed:
May. 14, 1990
Applicant:
Inventor:
Steve C Benesi, Novato, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210227 ; 210231 ; 210387 ;
Abstract
In a filtering device used for filtering slurries, or the like, and employing pressed together plate members separated by a filter media, there has been a problem in sealing the mating surfaces of the pressed together plates. In accord with the present invention a groove is provided on each of the plate members at their mating surfaces with the grooves at least partially aligned with each other. A fluid connection is provided to each of the grooves and a fluid at a desired pressure is separately applied to each of the grooves. The fluid pressures in each of the two grooves is different and selected to prevent leakage of slurry or slurry filtrate between the pressed together plates.