Piezo valve
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United States of America Patent
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-
Sep 6, 1994
Grant Date -
N/A
app pub date -
Sep 29, 1992
filing date -
Sep 30, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For a piezo valve (1) the sealable surface of the seat (13) of the controllable medium connection is so large that the pressure-induced closing force of the sealing region (14) of the bending element (4) that is generated in accordance with the medium pressure acting in the second switch position is greater than the elastically induced counterforce and smaller than the total of this counterforce and the piezo reset force acting upon application of a corresponding control voltage. Thus, both switch positions of the valve can also be held for a long period of time following pulsed voltage operation without any additional voltage application.
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