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. 04, 2018
Filed:
May. 04, 2016
Applicant:
Ovivo Inc., Montreal, CA;
Inventors:
Gary D. Haggard, Sr., Lakeway, TX (US);
Brendan Kelly, Austin, TX (US);
Assignee:
Ovivo Inc., Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 24/46 (2006.01); B01D 24/22 (2006.01); B01D 24/24 (2006.01);
U.S. Cl.
CPC ...
B01D 24/4631 (2013.01); B01D 24/22 (2013.01); B01D 24/24 (2013.01);
Abstract
Underdrain units in a sand medium or dual medium filtration system include efficient air, water and combined air/water cleaning. Air, water or both are delivered in backflow direction from a very low position on the underdrain unit, as well as water from a higher position, so as to effectively remove blocking contaminants on the outside the underdrain unit and in the surrounding filter media.