Magnetorheological fluids with stearate and thiophosphate additives
    31.
    发明授权
    Magnetorheological fluids with stearate and thiophosphate additives 失效
    含有硬脂酸盐和硫代磷酸盐添加剂的磁流变液

    公开(公告)号:US06881353B2

    公开(公告)日:2005-04-19

    申请号:US10663050

    申请日:2003-09-15

    IPC分类号: H01F1/44

    CPC分类号: H01F1/447

    摘要: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including a liquid, magnetizable particles, a stearate and a thiophosphate.

    摘要翻译: 本发明的一个实施例包括具有改善的耐久性的MR流体。 MR流体在使流体具有大量离心力的装置中特别有用,例如大型风扇离合器。 一个具体的实施方案包括包括液体,可磁化颗粒,硬脂酸盐和硫代磷酸盐的磁流变流体。

    Releasable fastener system
    32.
    发明授权
    Releasable fastener system 有权
    可拆卸紧固件系统

    公开(公告)号:US06766566B2

    公开(公告)日:2004-07-27

    申请号:US10305384

    申请日:2002-11-26

    IPC分类号: A44B1800

    摘要: A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof. The hook portion includes a support and a plurality of closely spaced upstanding hook elements extending from one side thereof, wherein the plurality of hook elements comprises a fiber and a shape memory alloy coating deposited onto the fiber, and wherein the fiber and the shape memory alloy coating comprises a non-axisymmetric coating or deposition of the shape memory alloy about a portion of the fiber. When the hook portion and loop portion are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. Introducing a thermal activation signal to the plurality of hook elements causes a change in shape orientation, flexural modulus property, or a combination thereof that is effectively reduces the shear and/or pull off forces in the releasable engagement. In this manner, disengagement of the releasable fastener system provides separation of the hook portion from the loop portion under controlled conditions.

    摘要翻译: 可释放的紧固件系统包括环部分和钩部分。 环路部分包括支撑件和设置在其一侧的环形材料。 钩部包括支撑件和从其一侧延伸的多个紧密间隔的直立钩元件,其中多个钩元件包括沉积在纤维上的纤维和形状记忆合金涂层,并且其中纤维和形状记忆合金 涂层包括围绕纤维的一部分的非轴对称涂层或形状记忆合金的沉积。 当钩部和环部被压在一起时,它们互锁以形成可释放的接合。 通过接合产生的所得到的接头相对于剪切力和拉力相对地抵抗并且剥离强度力弱。 向多个钩元件引入热激活信号导致形状取向,挠曲模量特性或其组合的改变,其有效地减少了可释放接合中的剪切力和/或拉拔力。 以这种方式,可释放的紧固件系统的分离在受控条件下提供了钩部分与环部分的分离。

    Apparatus with active material surface in contact with rheological fluid and method of enhancing performance thereof
    36.
    发明授权
    Apparatus with active material surface in contact with rheological fluid and method of enhancing performance thereof 有权
    具有与流变液接触的活性物质表面的装置及其增强性能的方法

    公开(公告)号:US08056687B2

    公开(公告)日:2011-11-15

    申请号:US11833286

    申请日:2007-08-03

    IPC分类号: F16D27/00

    摘要: An apparatus is provided having an active material forming a surface thereof in contact with a rheological fluid. The active material is controllable to vary a surface geometry thereof between a rough or nonsmooth surface geometry to increase drag, and achieve an increase in stress transmitted through the fluid, when a field is applied, while allowing a smooth surface geometry and an associated reduction in stress transmitted through the fluid when the field is removed. A method of enhancing performance of an apparatus that includes a rheological fluid is also provided.

    摘要翻译: 提供一种装置,其具有形成与流变液接触的表面的活性材料。 活性材料可控制以在粗糙或非平滑表面几何形状之间改变其表面几何形状以增加阻力,并且当施加场时实现通过流体传递的应力的增加,同时允许光滑表面几何形状和相关联的减少 当场被去除时通过流体传递的应力。 还提供了一种增强包括流变液的设备性能的方法。

    Magnetorheological fluid compositions
    39.
    发明授权
    Magnetorheological fluid compositions 失效
    磁流变液组成

    公开(公告)号:US07419616B2

    公开(公告)日:2008-09-02

    申请号:US11202414

    申请日:2005-08-11

    IPC分类号: H01F1/44

    CPC分类号: H01F1/44

    摘要: A magnetorheological fluid composition comprising a carrier fluid; and a plurality of high aspect ratio magnetizable particles, wherein the aspect ratio of the high aspect ratio magnetizable particles is greater than 1.5. Optionally, the high aspect ratio magnetizable particles can have interlocking structures comprising male component and a female component. Still further, a magnetorheological fluid composition can comprise low aspect ratio magnetizable particles having the interlocking structures, wherein the aspect ratio of the low aspect ratio magnetizable particles is 1 to 1.5.

    摘要翻译: 一种磁流变流体组合物,其包含载体流体; 以及多个高纵横比可磁化颗粒,其中高纵横比可磁化颗粒的纵横比大于1.5。 可选地,高纵横比可磁化颗粒可以具有包括阳部件和阴部件的互锁结构。 此外,磁流变流体组合物可以包含具有互锁结构的低纵横比可磁化颗粒,其中低纵横比可磁化颗粒的纵横比为1至1.5。