Fluid handling – Systems – Multi-way valve unit
Reexamination Certificate
2008-01-29
2008-01-29
Keasel, Eric (Department: 3753)
Fluid handling
Systems
Multi-way valve unit
C137S625500, C251S129060
Reexamination Certificate
active
07322376
ABSTRACT:
A piezoelectric valve has a flexural transducer accommodated in a valve housing and having a free ending cantilever operational section able to be deflected by electrical control. The operational section extends over two controlled valve openings lying on the same side and possesses two control section associated with such valve openings. One of the control section serves for control of a supply opening and is urged into its closed by actuating means provided in addition to the flexural transducer. The actuating force is powerful enough to reach the closed position, when the other control section clears the associated valve opening.
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Festo AG & Co.
Hoffman & Baron LLP
Keasel Eric
Price Craig
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