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. 02, 1999
Filed:
Jul. 07, 1997
Applicant:
Inventor:
Graeme Medworth, Salt Lake City, UT (US);
Assignee:
Westech Engineering, Inc., Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210289 ; 210291 ;
Abstract
An underdrain for a media filter used to filter liquids. The media particles rest on a pair of perforated plates having offset perforations. The plates are spaced apart a distance less than the size of the media particles. This allows the filtered liquid to flow through the plates but blocks passage of the media particles through the plates.