In-situ overheat alert for equipment
    33.
    发明授权
    In-situ overheat alert for equipment 有权
    设备原位过热警报

    公开(公告)号:US09058729B2

    公开(公告)日:2015-06-16

    申请号:US13613032

    申请日:2012-09-13

    摘要: Malfunction or failure of mechanical, electrical and electro-mechanical equipment, for example equipment used in manufacturing operations, is often preceded by an increase in the operating temperature of at least some portion of the equipment. A temperature-sensitive, active material-containing actuator is pre-selected to operate at a pre-determined temperature indicative of impending equipment failure and placed in thermal contact with the equipment. If the equipment achieves the pre-selected temperature the actuator signals this by displaying a flag or providing some other passive visual indication. Alternatively, or additionally, the actuator may issue an electrically-powered alert including visual or audible alerts or a wireless communication. Selected actuators are based on smart materials including shape memory alloys (SMA), shape memory polymers (SMP) and paraffin wax, all of which may be adapted to operate over a temperature range sufficient to encompass the expected range of pre-determined temperatures.

    摘要翻译: 机械,电气和机电设备(例如制造操作中使用的设备)的故障或故障通常在设备的至少一部分的操作温度升高之前。 预先选择含温度敏感的含活性材料的致动器以在指示即将到来的设备故障并且与设备热接触的预定温度下操作。 如果设备达到预先选定的温度,则执行器通过显示标志或提供一些其他被动视觉指示信号。 或者或另外,致动器可以发出包括视觉或听觉警报或无线通信的电动警报。 选择的执行器基于智能材料,包括形状记忆合金(SMA),形状记忆聚合物(SMP)和石蜡,所有这些都可以适于在足以包含预定温度的预期范围的温度范围内操作。

    Cable protection system and method of reducing an initial stress on a cable
    35.
    发明授权
    Cable protection system and method of reducing an initial stress on a cable 有权
    电缆保护系统和减少电缆初始应力的方法

    公开(公告)号:US08881521B2

    公开(公告)日:2014-11-11

    申请号:US13587383

    申请日:2012-08-16

    摘要: A method of reducing an initial stress on a cable includes stretching the cable to a first length to thereby define the initial stress. The cable has a central longitudinal axis, and includes a plurality of wires each twisted around the axis and formed from a shape memory alloy transitionable in response to a signal between a first state wherein each of the wires has a first temperature-dependent length, and a second state wherein each of the wires has a second temperature-dependent length that is less than the first. After stretching, the method includes activating the alloy by exposing the alloy to the signal such that the alloy transitions from the first to the second temperature-dependent state. Concurrent to activating, the method includes elongating the cable to a second length that is greater than the first to define a second stress on the cable that is less than the first.

    摘要翻译: 减少电缆上的初始应力的方法包括将电缆拉伸到第一长度,从而限定初始应力。 所述电缆具有中心纵向轴线,并且包括多个电线,每个电线绕所述轴线扭转并且由形状记忆合金形成,所述形状记忆合金可响应于第一状态而可转换,所述信号处于第一状态,其中每条电线具有第一温度依赖性长度,以及 第二状态,其中每条线具有小于第一温度的第二温度依赖长度。 拉伸后,该方法包括通过将合金暴露于信号来激活合金,使得合金从第一温度依赖于第二温度依赖状态转变。 与激活同时,该方法包括将电缆延伸到大于第一长度的第二长度,以限定小于第一应力的电缆上的第二应力。

    Active material-based impulse actuators
    38.
    发明授权
    Active material-based impulse actuators 有权
    基于活性物质的脉冲执行器

    公开(公告)号:US08656713B2

    公开(公告)日:2014-02-25

    申请号:US12607989

    申请日:2009-10-28

    IPC分类号: F01B29/10 F02G1/04 F41B7/00

    CPC分类号: F03G7/005

    摘要: An apparatus for and method of displacing a body, such as a projectile, piston, or the distal edge of a sunshade cover or energy absorbing honeycomb matrix, utilizing momentum generated by the rapid actuation of an active material element, such as a Martensitic shape memory alloy wire.

    摘要翻译: 利用由诸如马氏体形状记忆体的活性物质元素的快速致动产生的动量,使诸如抛射体,活塞或遮阳罩或能量吸收蜂窝状基体的远端边缘的身体移位的装置和方法 合金线。

    Heat engine system
    39.
    发明授权
    Heat engine system 有权
    热机系统

    公开(公告)号:US08631652B2

    公开(公告)日:2014-01-21

    申请号:US12947917

    申请日:2010-11-17

    IPC分类号: F01B29/10

    CPC分类号: F03G7/065

    摘要: A heat engine system configured for converting thermal energy to mechanical energy includes a source of thermal energy provided by a temperature difference between a heat source having a first temperature and a heat sink having a second temperature that is lower than the first temperature. The heat engine is configured for converting thermal energy to mechanical energy and includes an element formed from a first shape memory alloy having a crystallographic phase changeable between austenite and martensite at a first transformation temperature in response to the temperature difference between the heat source and the heat sink. The heat engine system also includes a start-up mechanism configured for inducing initial movement of the element in a desired operational direction to thereby start the heat engine.

    摘要翻译: 构造成将热能转换为机械能的热引擎系统包括由具有第一温度的热源和具有低于第一温度的第二温度的散热器之间的温度差提供的热能源。 热机被配置为将热能转换为机械能,并且包括由第一形状记忆合金形成的元件,该第一形状记忆合金具有响应于热源和热源之间的温度差在第一相变温度下在奥氏体和马氏体之间变化的结晶相 水槽。 热机系统还包括启动机构,其被构造成用于引导元件在期望的操作方向上的初始移动,从而起动热机。