Reception head for a filter unit

Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition

Reexamination Certificate

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Details

C422S105000, C210S232000, C210S406000, C210S433100, C210S445000, C210S451000

Reexamination Certificate

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07468163

ABSTRACT:
The invention relates to a mechanical support for a drainage device of a filter unit for microbiological testing of liquid substances. Said filter unit is provided with a membrane and adapted to be mounted on said mechanical support so that said membrane faces a reception surface of said mechanical support. The mechanical support comprises: a passage one end of which discharges externally of said reception surface and the other end of which discharges internally said reception surface; and selectively operable means for closing said passage, movable between a first position in which they close said passage and a second position in which they open said passage.

REFERENCES:
patent: 4678576 (1987-07-01), Leoncavallo
patent: 5092988 (1992-03-01), Womack et al.
patent: 5096588 (1992-03-01), Alberson
patent: 5172332 (1992-12-01), Hungerford et al.
patent: 5234585 (1993-08-01), Zuk, Jr.
patent: 5306420 (1994-04-01), Bisconte
patent: 6027638 (2000-02-01), Johnson
patent: 6133045 (2000-10-01), Chen et al.
patent: 6171480 (2001-01-01), Lee et al.
patent: 6358730 (2002-03-01), Kane
patent: 6884341 (2005-04-01), Ferguson
patent: 6905594 (2005-06-01), Ferguson
patent: 7067055 (2006-06-01), Ruppel
patent: 2004/0000518 (2004-01-01), Haley, III
patent: WO 01/48141 (2001-07-01), None
patent: WO 02/068580 (2002-09-01), None
International Search Report dated Feb. 27, 2004.

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