Device for and method of unclogging filters
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United States of America Patent
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Dec 1, 1998
Grant Date -
N/A
app pub date -
Jul 25, 1996
filing date -
Oct 21, 1995
priority date (Note) -
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Abstract
A device for unblocking filters by means of bursts of gas. The gas is kept in a tank (7) and supplied to filter-unclogging lances by lines (8). Each line (8) accommodates several valves (11 & 12) parallel with respect to their intakes and outlets. Controls (14) time all the valves to open simultaneously but for different lengths of time. The flow of gas supplied to the simple or compound filter is accordingly divided into subsidiary streams, one or more of which is discontinued before the other or others.
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