Filter jug with replaceable cartridge and method of...

Details Filter jug with replaceable cartridge and method of... Filter jug with replaceable cartridge and method of...

2004-09-16

2009-08-04

Cecil, Terry K (Department: 1797)

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

C210S138000, C210S282000, C210S482000

Reexamination Certificate

active

07569138

ABSTRACT:
A replaceable cartridge filtering jug includes a device for counting and displaying the filtering cycles performed by the cartridge to indicate that the cartridge is exhausted at the end of a period corresponding to its efficient useful life. An auxiliary counting and display device is also included which is capable of counting the filtering cycles performed in a subsidiary period of the period to indicate an item of data representing the temporary efficiency of the cartridge in the subsidiary period.

REFERENCES:
patent: 5900138 (1999-05-01), Moretto
patent: 6074550 (2000-06-01), Hofmann et al.
patent: 6224751 (2001-05-01), Hofmann et al.
patent: 2250281 (1992-06-01), None
patent: WO 00/66245 (2000-11-01), None
International Search Report for Int'l Application No. PCT/EP2004/010366 dated Dec. 8, 2004.

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