Filter apparatus and method with media edge sealing
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United States of America Patent
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Feb 11, 1997
Issued Date -
N/A
app pub date -
Dec 6, 1995
filing date -
Dec 24, 1991
priority date (Note) -
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Abstract
A filter apparatus and method use a permanent filter media belt to support a disposable filter media strip which are indexed over a vacuum chamber perforate cover plate at the bottom of a tank containing liquid to be filtered. A flight conveyor frictionally engages the disposable media strip to index both the disposable media strip and the permanent media belt. The side edges are each extended out into a seal enclosure containing an inflatable tube seal, each pressurized to seal the side edges during filtration, the tubes depressurized when the media are indexed.
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