Patent · US Expired

Household water filter

US4206055A · kind A · utility

9Cited by

6References

4Claims

0Family size

Assignee

Gelman Instrument Company · US

Inventors

Dale I. Hauk · Pinckney, US
Gerald Tanny · Rehovot, IL
William G. Presswood · Ypsilanti, US

Key dates

Filing date	Dec 4, 1978
Grant date	Jun 3, 1980
Priority date	—
Expiry date	Dec 4, 1998

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D37/02
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention provides a water filter, particularly suited for household use, with valving which enables either a bypass mode or a filtering mode. During the filtering mode the water flows through a number of filtering layers one of which is a microporous membrane and during the bypass mode the water flows parallel to and against the membrane so as to cleanse the membrane of material accumulated thereon during the filtering mode.

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