Gas separation – With nonliquid cleaning means for separating media – With automatic control of cleaning means
Reexamination Certificate
2006-12-12
2006-12-12
Smith, Duane (Department: 1724)
Gas separation
With nonliquid cleaning means for separating media
With automatic control of cleaning means
C055S284000, C055S287000, C055S288000, C055S302000, C055S385100, C055S484000, C055SDIG030, C095S279000, C096S425000, C096S426000, C096S427000, C096S428000, C015S352000, C137S251100
Reexamination Certificate
active
07147683
ABSTRACT:
A valve and trigger cyclically connect a vacuum and a blower to a filter. The valve box has three openings, the first connectable to the vacuum, the second connectable to the blower and the third connectable to the filter. A gate inside the box, biased by the blower and the vacuum toward closing the first opening, is held against the bias by a trigger outside the box to close the second opening. The external trigger intervally operates to release the interior gate to close the first opening and open the second opening. The blower operates only if the trigger is operating. The gate is released once for approximately 1/12 of a cycle interval during each trigger operating interval. A plurality of valves can be combined in a system with one trigger for cyclically sequentially connecting a plurality of filters to the vacuum and the blower.
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Catalano Frank J.
Christy, Inc.
Pham Minh-Chau T.
Smith Duane
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