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    HIGH POWER ULTRASONIC MOTOR
    1.
    发明公开
    HIGH POWER ULTRASONIC MOTOR 失效
    高性能超声波电机

    公开(公告)号：EP1029392A2

    公开(公告)日：2000-08-23

    申请号：EP98922284.9

    申请日：1998-05-11

    申请人： Etrema Products, Inc.

    发明人： HANSEN, Thomas, T.

    IPC分类号： H02N2/04

    CPC分类号： H01L41/12

    摘要： A high power ultrasonic motor (21). The motor includes a housing (23) having a predetermined geometry and a transducer (41). The transducer has an active element (42) made from a magnetostrictive material and a coil (51) for producing an electromagnetic filed which extends through at least a portion of the active element. The active element is changeable between a first shape when in the absence of the electromagnetic field and a second shape when in the presence of the electromagnetic field. An electrical signal is provided to the coil for producing the electromagnetic field. An acoustic element (96) is connected to the transducer for providing ultrasonic energy to perform work.

    COMPACT ACTUATOR AND CONTROLLER AND PUMPING APPARATUS FOR SAME
    3.
    发明公开
    COMPACT ACTUATOR AND CONTROLLER AND PUMPING APPARATUS FOR SAME 失效
    紧凑型致动器和控制器及泵送装置

    公开(公告)号：EP0925457A1

    公开(公告)日：1999-06-30

    申请号：EP97940828.0

    申请日：1997-09-05

    申请人： Etrema Products, Inc.

    发明人： HANSEN, Thomas, T. ,  CLIFFORD, Robert, R. ,  PIERCE, Thomas, D. ,  CARTWRIGHT, Carter, B. ,  JOHNSON, Bruce, G. ,  ZUNKEL, Gary, D.

    IPC分类号： F15B9 ,  F15B15 ,  F15B19 ,  G01V1

    CPC分类号： G01V1/147 ,  F15B9/09 ,  F15B15/18 ,  F15B19/005 ,  G01V1/52

    摘要： A compact actuator (21) for use with a fluid and including a housing (31) having a predetermined geometry. An actuation member (41) is mounted in the housing for movement between first and second positions for performing work. The actuation member has first and second faces (46, 47). The housing has an assembly (61) for providing fluid to the first face for moving the actuation member to the first position and to the second face for moving the actuation member to the second position. The assembly includes at least one transducer (69, 83 and/or 84) having an active element (71, 86 and/or 87) which is changeable between a first shape when in the absence of an electromagnetic field and a second shape when in the presence of an electromagnetic field. A controller (146) and pumping apparatus (301) for use with the actuator are provided.

    摘要翻译： 一种与流体一起使用并包括具有预定几何形状的壳体（31）的紧凑型致动器（21）。 致动构件（41）安装在壳体中用于在第一位置和第二位置之间移动以进行工作。 致动构件具有第一和第二面（46,47）。 壳体具有用于向第一面提供流体的组件（61），用于将致动构件移动到第一位置和第二面以将致动构件移动到第二位置。 所述组件包括具有有源元件（71,86和/或87）的至少一个换能器（69,83和/或84），所述有源元件在没有电磁场时处于第一形状和处于第二形状时处于第二形状 电磁场的存在。 提供了与致动器一起使用的控制器（146）和泵送设备（301）。