公开(公告)号：US20110272537A1

公开(公告)日：2011-11-10

申请号：US12736317

申请日：2009-04-02

Applicant: Nabil Gindy ,  Amir Fahmi ,  Yan Wang ,  Venkata S. Kancharla ,  Kevin Walker

Inventor： Nabil Gindy ,  Amir Fahmi ,  Yan Wang ,  Venkata S. Kancharla ,  Kevin Walker

IPC: H01F7/02 ,  F16M13/00 ,  H01F7/00 ,  H01F1/28

CPC classification number: B25B1/2421 ,  B25B1/2457 ,  B25B11/002

Abstract: Retention of position and clamping of components is ideally performed with an engagement arrangement which is reconfigurable. Magnetorheological (MR) fluids have been utilised for reconfigurable engagement arrangements but typically require powerful electromagnets to activate the MR fluid. By providing enclosed chambers with a constriction in the form of a passage between a reservoir portion of the chamber and an engagement portion of the chamber it is possible to utilise smaller permanent magnets acting upon a smaller volume of MR fluid in the passage. In such circumstances initial positioning of engagement elements is provided through forced displacement in the form of a plunger or pin and then retention of the engagement element position achieved through positioning a magnetic field across and about a passage to create an effective block retaining MR fluid volume and therefore presentation of the engagement element. In order to achieve such performance MR fluids which have an appropriate performance and durability are necessary. In such circumstances in accordance with other aspects of the present invention particular magnetorheological fluids are also described.

Abstract translation: 理想情况下，使用可重新配置的接合装置来实现部件保持位置和夹紧。 磁流变（MR）流体已被用于可重构接合装置，但通常需要强大的电磁铁来激活MR流体。 通过提供具有在腔室的储存部分和腔室的接合部分之间的通道形式的收缩的封闭腔室，可以利用作用在通道中较小体积的MR流体的较小永久磁铁。 在这种情况下，接合元件的初始定位通过柱塞或销的形式的强制位移来提供，然后通过在通道上和周围定位磁场来实现接合元件位置的保持，以产生保持MR流体体积的有效块， 因此呈现接合元件。 为了实现这种性能，需要具有适当性能和耐久性的MR流体。 在这种情况下，根据本发明的其它方面，还描述了特定的磁流变流体。

公开(公告)号：US20100137523A1

公开(公告)日：2010-06-03

申请号：US12598655

申请日：2008-05-06

Applicant: Cesar E. Mendoza ,  Amir Fahmi ,  Nabil N. Z. Gindy

Inventor： Cesar E. Mendoza ,  Amir Fahmi ,  Nabil N. Z. Gindy

IPC: C08F226/08 ,  C08F120/06 ,  C08F120/04 ,  C08F36/06 ,  C08F8/00

CPC classification number: C08J3/203 ,  B82Y30/00 ,  C08G2261/126 ,  C08J3/215 ,  C08J5/005 ,  C08J2353/00 ,  C08J2353/02 ,  C08J2387/00

Abstract: Creation of nanoparticle structures in two and three dimensions is advantageous in providing a number of functions such as in relation to catalytic, optical, electronic and magnetic propertied and other actions. Fabrication of such structures poses a considerable technical challenge. A block copolymer pair is used as a matrix to spatially organizes and aligns loaded inorganic materials in the form of nanoparticles. The inorganic precursors are selectively incorporated to a specific block of a di or tri block copolymer so that through solvent evaporation, reduction and mechanical working such as LAOS the orientation and positioning of the block copolymers nanoparticles are obtained into a desired structure.

Abstract translation: 在二维和三维中形成纳米颗粒结构有利于提供诸如关于催化，光学，电子和磁性以及其它作用的许多功能。 制造这种结构构成了相当大的技术挑战。 使用嵌段共聚物对作为基质以空间组织和对齐纳米颗粒形式的负载的无机材料。 无机前体选择性地掺入到二嵌段共聚物或三嵌段共聚物的特定嵌段中，使得通过溶剂蒸发，还原和机械加工如LAOS，获得嵌段共聚物纳米颗粒的取向和定位成所需的结构。