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    • 8. 发明授权
    • Servo valve
    • 伺服阀
    • US5938098A
    • 1999-08-17
    • US193568
    • 1998-11-17
    • Robert L. Fife
    • Robert L. Fife
    • B65H23/02B65H23/032F15B9/10F15B13/04B65H43/00F17D31/128
    • B65H23/0326B65H23/0212F15B13/0402F15B9/10B65H2406/414B65H2555/11Y10T137/86558Y10T137/87161
    • A positive pressure operated servo apparatus for lateral alignment of a continuous web of paper, plastic, textiles and other materials which are being processed at windup, unwind, printing, coating, folding and slitting stations, or other intermediate points in the machine process. The apparatus includes an air source communicating with a sensor and servo valve which regulates a double-acting air actuator having an output member to move a web positioning assembly. The servo valve is regulated by a diaphragm that is controlled by a pneumatic correction signal force from a low pressure sensor circuit and is arranged under the influence of such signal force to selectively position a valve element relative to two orifice openings to provide differential air pressure proportional to error to operate the actuator to produce actuator movement proportional to the error to correct and maintain the position of the web.
    • 用于横向对准连续的纸,塑料,纺织品和其他材料的正压力伺服设备,这些材料在卷绕,退卷,印刷,涂布,折叠和切割台或机器过程中的其它中间点处理。 该装置包括与传感器连通的空气源和伺服阀,其调节具有输出构件的双作用空气致动器以移动腹板定位组件。 伺服阀由隔膜调节,该隔膜由来自低压传感器电路的气动校正信号力控制,并且在这种信号力的影响下被布置以选择性地相对于两个孔口开口定位阀元件以提供比例的差分空气压力 以误操作致动器以产生与误差成比例的致动器运动,以校正和保持幅材的位置。
    • 10. 发明授权
    • Fast variable flow microelectromechanical valves
    • 快速变流微机电阀门
    • US6089534A
    • 2000-07-18
    • US4520
    • 1998-01-08
    • David K. BiegelsenWarren B. JacksonPatrick C. P. CheungEric Peeters
    • David K. BiegelsenWarren B. JacksonPatrick C. P. CheungEric Peeters
    • B65H5/22F16K7/00F16K31/06
    • B65H5/228F16K99/0015B65H2406/11B65H2406/414
    • A variable fluid flow valve is disclosed. The valve can be batch fabricated in two dimensional valve arrays, with all valves in the array being controlled in parallel to achieve high flow rates without increasing response time. Typically, each valve includes a valve housing having an aperture plate defining an elongated aperture therethrough, and an opposing plate positioned in spaced apart relationship to the aperture plate. In one embodiment a flexible film or strip is attached at its first end to the aperture plate and at its second end to the opposing plate. In another embodiment of the invention, the flexible film is attached at only one end and is free to move at the other end. In both types of valves, valve action is provided by using electrodes to variably move the flexible film from an aperture blocking to an aperture non-blocking position. The flexible film may be moved in a continuously variable manner or a discretely variable manner, depending upon the electrode configuration. Binary valves in matrixes may also be used with the elongated opening.
    • 公开了一种可变流体流量阀。 该阀可以批量制造在二维阀阵列中,阵列中的所有阀并联控制以实现高流速而不增加响应时间。 通常,每个阀包括具有限定穿过其中的细长孔的孔板的阀壳体和与孔板间隔开的关系。 在一个实施例中,柔性膜或带在其第一端附接到孔板并且在其第二端处连接到相对的板。 在本发明的另一个实施例中,柔性膜仅在一端附接并在另一端自由移动。 在两种类型的阀中,通过使用电极来将柔性膜从孔径阻挡可变地移动到孔阻塞位置来提供阀动作。 取决于电极配置,柔性膜可以以连续可变的方式或离散地变化的方式移动。 基体中的二元阀也可以与细长的开口一起使用。