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:
Dec. 17, 1991
Filed:
Feb. 14, 1990
Applicant:
Inventors:
Walter F Ahlberg, Houston, TX (US);
Joseph F Long, Austin, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21032168 ; 21033301 ; 210456 ;
Abstract
A Multi-Purpose Rotating filter comprising a multiplicity of controlled pore sized membrane covered hollow double cone shaped filter discs mounted on a rotatable hollow shaft with provisions for feed between the rotating discs and disc speed sufficient to create a boundary layer to keep the disc surfaces essentially clean as disclosed.