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. 27, 1990
Filed:
Sep. 05, 1989
Applicant:
Inventors:
Roland E Weber, Indian Orchard, MA (US);
John J Pavlovich, West Springfield, MA (US);
Lawrence K Wang, Latham, NY (US);
Assignee:
Aurian Corporation, Newton Lower Falls, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210193 ; 210393 ; 210411 ; 210425 ; 210427 ; 210437 ; 210446 ; 210455 ; 210457 ;
Abstract
A filtration apparatus characterized by efficiency of the precoating step and maintenance of filtration performance over a long period of time after precoating has been completed. The filter promotes parallel flow of porous precoat material along a porous septum, thereby achieving efficient stacking of this material against the septum. A dual-speed pumping system transmits the precoat material to the septum at high velocity, thereby further encouraging efficient stacking, but pumps the fluid to be filtered at a lower velocity to minimize energy consumption.