发明名称 |
LATCHABLE ELECTROHYDRAULIC SERVOVALVE |
摘要 |
<p>An electro-hydraulic servovalve (EHSV) ( 10 ) that includes a nozzle ( 16 ), a motor ( 12 ) operably connected to the nozzle ( 16 ) for controlling the position of the nozzle ( 16 ) based on current provided to the motor ( 12 ), a spool ( 18 ) having first and second ends ( 22,26 ) slidably mounted in a sleeve ( 34 ) having first and second ends ( 31,33 ) and a first land ( 21 ) near the first end ( 22 ), a first passage ( 40 ) extending from near the nozzle ( 16 ) to the first end ( 31 ) of the sleeve ( 34 ), a second passage ( 42 ) extending from near the nozzle ( 16 ) to the second end ( 33 ) of the sleeve ( 34 ), the spool ( 18 ) shifting to a first fail-safe position when the current is below a first predetermined level and latching in a second fail-safe position different than the first fail-safe position when the current exceeds a second predetermined level greater than the first predetermined level.</p> |
申请公布号 |
EP1907707(B1) |
申请公布日期 |
2009.07.08 |
申请号 |
EP20060788894 |
申请日期 |
2006.07.27 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
SHELBY, JEFFREY, DUGAN;AREND, MATTHEW, A.;FUTA, PAUL, W., JR. |
分类号 |
F15B13/043;F15B20/00 |
主分类号 |
F15B13/043 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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