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    BI-FOLD VALVE-TYPE MAGNETORHEOLOGICAL FLUID ENERGY ABSORBING DEVICE
    82.
    发明申请
    BI-FOLD VALVE-TYPE MAGNETORHEOLOGICAL FLUID ENERGY ABSORBING DEVICE 有权
    双折阀式磁流变流体能量吸收装置

    公开(公告)号：US20090084646A1

    公开(公告)日：2009-04-02

    申请号：US11864107

    申请日：2007-09-28

    申请人： Alan L. Browne ,  John C. Ulicny ,  Chandra S. Namuduri ,  Nancy L. Johnson ,  Norman M. Wereley ,  Young Tai Choi ,  Wei Hu ,  Min Mao

    发明人： Alan L. Browne ,  John C. Ulicny ,  Chandra S. Namuduri ,  Nancy L. Johnson ,  Norman M. Wereley ,  Young Tai Choi ,  Wei Hu ,  Min Mao

    IPC分类号： F16F9/53

    CPC分类号： F16F9/537

    摘要： An energy absorbing device is provided that includes a damper assembly having inner and outer concentric tubes and a piston movable within the inner tube. The damper assembly is configured to form bi-fold valve-type cavities to operatively connect an inner chamber of the inner tube with an outer chamber formed between the inner and outer tubes. A magnetorheological fluid fills the chambers and the bi-fold valve-type cavities. The magnetorheological fluid preferably contains coated magnetic particles at about 10 to 60 percent by volume. Electrical coils adjacent the bi-fold valves are selectively energizable to such that the energy absorbing device provides a tunable damping force, preferably over the entire range of velocities of the piston, especially in automotive applications.

    摘要翻译： 提供了一种能量吸收装置，其包括具有内部和外部同心管的阻尼器组件和可在内部管内移动的活塞。 阻尼器组件被构造成形成双重阀型腔，以将内管的内腔与形成在内管和外管之间的外室可操作地连接。 磁流变流体填充腔室和双折阀型空腔。 磁流变液优选含有约10至60体积％的涂覆磁性颗粒。 邻近双重阀的电气线圈选择性地被激励，使得能量吸收装置优选地在活塞的整个速度范围内提供可调谐阻尼力，特别是在汽车应用中。

    FORCE AND DECELERATION DELIMITING DEVICES AND METHODS FOR OPERATING THE SAME
    87.
    发明申请
    FORCE AND DECELERATION DELIMITING DEVICES AND METHODS FOR OPERATING THE SAME 有权
    强制和减速装置及其操作方法

    公开(公告)号：US20080190684A1

    公开(公告)日：2008-08-14

    申请号：US12102874

    申请日：2008-04-15

    申请人： Jan H. Aase ,  Alan L. Browne ,  Nancy L. Johnson

    发明人： Jan H. Aase ,  Alan L. Browne ,  Nancy L. Johnson

    IPC分类号： B60R21/00

    CPC分类号： B60R21/04 ,  B60R21/045 ,  B60R2021/0421

    摘要： Force and deceleration delimiting methods for operating the same in a vehicle generally include an open celled material expandable from a non-expanded to an expanded state, wherein the material is sandwiched between first and second end cap members; an optional support surface cooperatively positioned with the material to cover a surface of the material in the expanded and non-expanded states; an optional shield cooperatively positioned with the material to cover a surface of the material in the expanded and non-expanded states; and an activation mechanism adapted to regulate selective expansion of the material from the non-expanded to the expanded state in response to a triggering event, wherein the support surface and/or shield have a compact shape when the material is in the non-expanded state and an expanded state when the material is in the expanded state.

    摘要翻译： 用于在车辆中操作它的力和减速分界方法通常包括可从未膨胀到膨胀状态膨胀的开孔，其中材料夹在第一和第二端盖构件之间; 可选的支撑表面与材料协作地定位以覆盖在膨胀和非膨胀状态下的材料的表面; 与该材料配合定位以覆盖在膨胀状态和非膨胀状态的材料表面的可选屏蔽件; 以及激活机构，其适于响应于触发事件来调节材料从未膨胀状态到膨胀状态的选择性膨胀，其中当所述材料处于非膨胀状态时，所述支撑表面和/或屏蔽具有紧凑的形状 以及当材料处于膨胀状态时的膨胀状态。

    Hood assembly utilizing active materials based mechanisms
    88.
    发明授权
    Hood assembly utilizing active materials based mechanisms 有权
    使用基于活性材料的机构的罩组件

    公开(公告)号：US07392876B2

    公开(公告)日：2008-07-01

    申请号：US10864724

    申请日：2004-06-09

    申请人： Alan L. Browne ,  Nancy L. Johnson

    发明人： Alan L. Browne ,  Nancy L. Johnson

    IPC分类号： B60R21/34

    CPC分类号： B60R21/38 ,  B60R2019/007 ,  B60R2021/343

    摘要： An active material hood impact mitigation mechanism is activated in response to a signal generated from an impact sensor or pre-impact sensor or manually. The mitigation mechanism is capable of changing either reversibly or irreversibly the stiffness, shape, location, orientation, or displacement force of the hood either globally or locally, before an impact against the hood. The active material mitigation mechanism is held in a device designed to be installed in operative communication with the hood surface. The active material is characterized by a first shape or stiffness and is operative to change to a second shape or stiffness in response to the activation signal. Such active materials include shape memory alloys, electroactive polymers, shape memory polymers, magnetic shape memory alloys, magnetorheological fluids, magnetorheological elastomers, electrorheological fluids, and piezoelectric materials.

    摘要翻译： 响应于从冲击传感器或预冲击传感器产生的信号或手动地激活活性材料罩冲击减轻机构。 缓解机制能够在对机罩的撞击之前全面地或局部地改变发动机罩的刚度，形状，位置，取向或位移力。 活性物质缓释机构保持在被设计成与罩表面操作性连通的装置中。 活性材料的特征在于第一形状或刚度，并且可操作地响应于激活信号而改变为第二形状或刚度。 这种活性材料包括形状记忆合金，电活性聚合物，形状记忆聚合物，磁性形状记忆合金，磁流变流体，磁流变弹性体，电流变流体和压电材料。