发明名称 ATTUATORE PIEZOELETTRICO AUTOCOMPENSATO PER UNA VALVOLA DI CONTROLLO.
摘要 <p>An actuator device for a control valve is described and comprises a piezoelectric actuating member (12) for bringing about the movement of a closure member (30) of the valve between an open position and a closure position; the member (12) has a reference portion (20) for connection to a fixed portion (26) of the device and a free portion (24) for connection to the closure member (30), the free portion (24) being movable relative to the reference portion (20) as a result of mechanical deformations produced in the actuating member (12) by the piezoelectric effect. <??>The reference portion (20) of the actuating member (12) is controllable selectively between a condition in which it is locked in a reference position and is fixed firmly to the fixed portion (26) of the device, and a free condition in which it is movable relative to the fixed portion (26). <IMAGE></p>
申请公布号 ITTO20000653(D0) 申请公布日期 2000.06.30
申请号 IT2000TO00653 申请日期 2000.06.30
申请人 C.R.F. SOCIETA' CONSORTILE PER AZIO NI 发明人 MONTUSCHI MARIO;FAGGIOLI EUGENIO
分类号 F02D41/20;F02M47/02;F02M51/06;F02M59/46;F02M61/16;F02M63/00;F16K31/00;H01L41/053 主分类号 F02D41/20
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