发明名称 |
Válvula de sangria de ar automática para um sistema hidráulico fechado |
摘要 |
<p>An auto bleed valve and method of bleeding a hydraulic system of an aircraft is accomplished by illuminating a plenum of a bleed valve using an LED oriented to illuminate a phototransistor when air is present in the plenum. A comparator circuit is used on an output of the phototransistor such that a predetermined voltage output corresponds to air detected in the plenum. An integrating circuit and a second comparator in series with the first comparator circuit is used to determine when a predetermined time period is met in which air is continuously detected in the plenum. Thereafter an air bleed solenoid can be used to vent the air upon a signal from the aircraft computer logic system.</p> |
申请公布号 |
BRPI0907778(A2) |
申请公布日期 |
2015.07.14 |
申请号 |
BR2009PI07778 |
申请日期 |
2009.03.31 |
申请人 |
PARKER-HANNIFIN CORPORATION |
发明人 |
WILLIANM DIRKIN;FRANKLIN C. LEE;WILLIAM LUI |
分类号 |
F15B21/04;B01D19/00;F16K24/04 |
主分类号 |
F15B21/04 |
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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