Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Reexamination Certificate
2011-08-23
2011-08-23
Cecil, Terry (Department: 1778)
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
C210S335000, C137S843000
Reexamination Certificate
active
08002975
ABSTRACT:
A serial-flow filtration device is provided with pressure-activated pressure-breachable seal or a pressure-activated gate for by-passing at least one of its constituent layer (or layers) of filtration material. The filtration device comprises a housing, a fluid inlet, a fluid outlet, and at least an upper and a rearmost filter layer. The upper filter layer divides the interior of the housing into an upstream zone and a downstream zone, with the rearmost filter layer residing in the downstream zone. The fluid inlet enables the introduction of fluid into said upstream zone. The fluid outlet enables releases of the fluid from said downstream zone. The upper filter layer, but not the rearmost filter layer, has integrated thereinto a pressure-activated pressure-breachable seal or a pressure-activated gate capable of allowing substantially non-selective passage of fluid from the upstream zone into the downstream zone upon the attainment of a predetermined pressure differential across said upper filter layer.
REFERENCES:
patent: 2098102 (1937-11-01), McLean
patent: 2151538 (1939-03-01), Swanson
patent: 3317046 (1967-05-01), Raupp et al.
patent: 4555342 (1985-11-01), Grant
patent: 4629569 (1986-12-01), Gimbel
patent: 4799944 (1989-01-01), Dixon et al.
patent: 4820409 (1989-04-01), Lowsky et al.
patent: 4863602 (1989-09-01), Johnson
patent: 6638423 (2003-10-01), Dockery
patent: 6800194 (2004-10-01), Stamey et al.
patent: 6841065 (2005-01-01), Smith et al.
patent: 6881330 (2005-04-01), Doyle et al.
patent: 6911148 (2005-06-01), Demmer et al.
patent: WO01/19483 (2001-03-01), None
Backes Kari A.
Dzengeleski Stephen J.
Straeffer Gregory S.
Cecil Terry
Millipore Corporation
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