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发明授权
US5004215A Resilient return strut of the elastic-hydraulic type with incorporated linear damping by throttling a high-viscosity fluid 失效
通过节流高粘度流体，弹性液压型回弹支撑弹性回弹支撑结合线性阻尼

Resilient return strut of the elastic-hydraulic type with incorporated linear damping by throttling a high-viscosity fluid
摘要：
The resilient return strut is of the elastic-hydraulic type with incorporated linear damping by throttling a high-viscosity fluid, and comprises a damper (1) mounted between two return springs (2, 3) in elastomer-based sleeves (17, 18), undergoing a shearing action and sealing the chambers (34, 35) set off within the body of the damper (12) by a transverse wall (10) which marks off a permanent throttling passage around a central brace (23). Limiting valves equipped with spring-leaves (45) sealing the holes (40) bored in the wall (10) increase the throttling section. A compressed-air system (52), mounted in a spring (2), compensates for thermal expansion of the fluid. The device is used with helicopter rotors.
摘要（中）：

弹性回流支架是弹性液压型，通过节流高粘度流体而结合了线性阻尼，并包括安装在基于弹性体的套筒（17,18）中的两个复位弹簧（2,3）之间的阻尼器（1） 经过剪切动作并且通过围绕中心支架（23）标记永久性节流通道的横向壁（10）来密封在阻尼器（12）的主体内放置的室（34,35）。 配备有密封在壁（10）中钻孔的孔（40）的弹簧叶片（45）的限制阀增加了节流部分。 安装在弹簧（2）中的压缩空气系统（52）补偿流体的热膨胀。 该装置与直升机转子一起使用。

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