Filter assembly for sampling

Details Filter assembly for sampling Filter assembly for sampling

2005-10-26

2010-10-26

Lithgow, Thomas M (Department: 1797)

Liquid purification or separation

Diverse distinct separators

Including a filter

C210S305000, C210S306000, C210S321870, C210S321900

Reexamination Certificate

active

07820046

ABSTRACT:
A filter assembly is provided for obtaining a filtered liquid sample from slurry, such as a liquid process stream that contains liquid, dissolved matter and solids. A housing defines a cavity. A rod is arranged in the cavity and supports a filter. A cartridge comprises the filter, and is arranged between the housing and the rod. Furthermore, there is a helicoidal passage for a slurry defined by the housing and the cartridge. There is also a cavity defined by the rod and the cartridge. The slurry has velocity that generates scouring and cleaning action on the filter media thus preventing cake formation on the filter. The filtering apparatus of the present invention provides reliable and continuous on-line sample delivery for an analyzer.

REFERENCES:
patent: 280828 (1883-07-01), Howes
patent: 2198819 (1940-04-01), Holm
patent: 3754658 (1973-08-01), Messing
patent: 4243536 (1981-01-01), Prolss
patent: 4727758 (1988-03-01), Murdock
patent: 5602348 (1997-02-01), Takakarhu et al.
patent: 5628909 (1997-05-01), Bellhouse
patent: 5871645 (1999-02-01), Reed et al.
patent: 5916443 (1999-06-01), Mueller et al.
patent: 6155430 (2000-12-01), Goodman

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