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    • 8. 发明申请
    • PISTON ACTUATOR CONTROLLING A VALVE AND METHOD FOR OPERATING THE SAME
    • 活塞致动器控制阀和操作其的方法
    • US20140197345A1
    • 2014-07-17
    • US14154268
    • 2014-01-14
    • Brian M. GraichenDave FletcherMatt GilmerJames H. MillerKeith Hampton
    • Brian M. GraichenDave FletcherMatt GilmerJames H. MillerKeith Hampton
    • F16K3/24
    • F16K31/084F16K3/0254F16K31/1221
    • Piston actuators and methods of its operation are described. The piston actuators include a housing defining a chamber having a piston therein and a spring seated against the piston to bias it into a starting position. The piston includes a ferromagnetic material, a magnet or both and a secondary magnet or ferromagnetic material, forming a first magnetic/ferromagnetic pair with the piston, is positioned to maintain the piston in a secondary position. A tertiary magnet or ferromagnetic material, forming a second magnetic/ferromagnetic pair with the piston, may assist the spring in maintaining the piston in the starting position. During operation, introduction into or removal from the chamber of an amount of fluid sufficient to overcome the force of the spring (and the tertiary magnet or ferromagnetic material) enables the attraction between the members of the first magnetic/ferromagnetic pair to move the piston to the secondary position as a snap movement.
    • 描述了活塞致动器及其操作方法。 活塞致动器包括限定其中具有活塞的室的壳体和抵靠活塞抵靠的弹簧以将其偏压到起始位置。 活塞包括与活塞形成第一磁/铁磁对的铁磁材料,磁体或二者以及次磁体或铁磁材料,以将活塞保持在第二位置。 与活塞形成第二磁/铁磁对的三级磁体或铁磁材料可以有助于弹簧将活塞保持在起始位置。 在操作期间,将足够克服弹簧(和第三磁体或铁磁材料)的力的流体的量引入腔室或从腔室排出使得能够使第一磁/铁磁体对的构件之间的吸引力将活塞移动到 次要位置作为快速移动。