Patent · US Active

Systems and methods of eliminating filter air locks

US10099942B2 · kind B2 · utility

2Cited by

6References

16Claims

0Family size

Assignee

Zero E Technologies, LLC · US

Inventors

Doug Kellam · Oak Brook, US
Rajan G. Rajan · Willis, US
Liu Wei · Yantai, CN

Key dates

Filing date	Mar 14, 2014
Grant date	Oct 16, 2018
Priority date	—
Expiry date	Sep 8, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2307/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Systems and methods of eliminate filter air locks by maintaining a constant water table at the water head layer of the filter. The constant water table eliminates air locks in the filter as the filter drains. Water flows from the water head layer through a filtration medium in a filter cartridge, and the filtered water is output from a water outlet at the top of the cartridge. For a water table retention filter, where the water (or other liquid) being filtered, is re-directed to the top of the filter to the water head layer to avoid drawing air into the filter. Unfiltered water drains down the center of the filter to the water head layer and then flows up through the filter and is directed out near or at the top of the filter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.