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    • 3. 发明申请
    • Display system and method
    • US20060274031A1
    • 2006-12-07
    • US11144525
    • 2005-06-02
    • Lau YuenChi Chung
    • Lau YuenChi Chung
    • G09G5/00
    • H04N7/144
    • A display system is disclosed as including first and second visual display units (VDU's), each for displaying visual images for viewing; a first digital video camera for capturing images of a first individual viewing images displayed by the first VDU; at least second and third digital video cameras for capturing, each from a different angle, images of a second individual viewing the second VDU; in which the first digital video camera is connectable with the second VDU for transmitting the captured images to the second VDU for display; and the first VDU is connectable with either of the second and third digital video cameras for display of images captured by either of the second and third digital video cameras; means for identifying the position of the centre point between the eyes of the captured images of the first individual against a capture window of the first digital video camera; and means for selectively connecting the first VDU with the second digital video camera or the third digital video camera in accordance with the identified position of the centre point between the eyes of the first individual. A visual display apparatus is also disclosed as including a visual display unit supported by a table, the table including a closable opening; a reflector movable relative to the table between a first position in which the reflector closes the opening and a second position in which the opening is open and images displayed by the visual display unit are reflectable by the reflector for viewing; and an end of the reflector is slidably and swivellably movable relative to the table for movement between the first and second positions.
    • 4. 发明申请
    • SHAPE MEMORY MATERIAL AND METHOD OF MAKING THE SAME
    • 形状记忆材料及其制备方法
    • US20080053575A1
    • 2008-03-06
    • US11927816
    • 2007-10-30
    • Kenneth Man Chee CheungKelvin YeungWilliam LuChi Chung
    • Kenneth Man Chee CheungKelvin YeungWilliam LuChi Chung
    • C22C30/00
    • A61B17/866A61B17/72A61B17/80A61B17/842A61B2017/00867C22C19/03C22C30/00C22F1/006Y10T428/12
    • The present invention relates generally to a shape memory and/or super-elastic material, such as a nickel titanium alloy. Additionally or alternatively, the present invention relates to a super-elastic or pseudo-elastic material that has an initial transition temperature Af above a body temperature. The shape memory material can have a super-elasticity or pseudo-elasticity property at a temperature below the initial transition temperature Af of the material. For example, the shape memory material can have its workable temperature for producing super-elasticity or pseudo-elasticity of about 0° C. to 15° C. below the initial transition temperature Af. The shape memory material can be malleable at a room temperature, and become super-elastic or pseudo-elastic at a body temperature. In addition, the present invention relates to a method of making a shape memory or a super-elastic material. The treatment protocols can include but not limited to thermo-mechanical, thermo-mechanical, radiation, and ternary alloying treatments.
    • 本发明一般涉及形状记忆和/或超弹性材料,例如镍钛合金。 另外或替代地,本发明涉及超弹性或假弹性材料,其具有高于体温的初始转变温度A 。 形状记忆材料可以在低于材料的初始转变温度A 的温度下具有超弹性或假弹性性质。 例如,形状记忆材料可具有用于产生低于初始转变温度A 的约0℃至15℃的超弹性或假弹性的可工作温度。 形状记忆材料可以在室温下延展,并且在体温下变得超弹性或假弹性。 此外,本发明涉及一种制作形状记忆或超弹性材料的方法。 处理方案可以包括但不限于热机械,热机械,辐射和三元合金化处理。
    • 5. 发明申请
    • PSEUDOELASTIC POROUS SHAPE MEMORY MATERIALS FOR BIOMEDICAL AND ENGINEERING APPLICATIONS
    • 用于生物医学和工程应用的PSEUDOELASTIC POROUS SHAPE MEMORY材料
    • US20070123976A1
    • 2007-05-31
    • US11534275
    • 2006-09-22
    • Bin YuanChi ChungJoan Yee HoMin ZhuKelvin YeungKenneth Cheung
    • Bin YuanChi ChungJoan Yee HoMin ZhuKelvin YeungKenneth Cheung
    • A61F2/06
    • A61L27/50A61L27/06A61L27/56A61L2400/16
    • New porous shape memory materials with the use of different fabrication methods such as hot isostatic pressing technique are provided for biomedical and engineering applications. These new materials have a pseudoelasticity ranging from 0.1% to 50%. The mechanical properties of those materials can be adjusted from 1% to 10%. The pore distribution of these said materials is isotropic and homogenous, and their pore shapes can be tailor-made to be spherical or polygonal as avoiding stress concentration around the pores. The porosity and pore size can be controlled by fabrication process. These materials can exhibit superior pseudoelasticity and mechanical properties during testing than the other porous shape memory alloys fabricated by Self-propagating High-temperature Synthesis (SHS). These advance properties may apply to but not only limited to orthopaedic implants such as artificial bone graft, hip prosthesis and interverbal disc prosthesis; and also for engineering purpose such as damping devices.
    • 为生物医学和工程应用提供了使用不同制造方法如热等静压技术的新型多孔形状记忆材料。 这些新材料的假弹性范围为0.1%至50%。 这些材料的机械性能可以从1%调整到10%。 这些所述材料的孔分布是各向同性的并且均匀,并且它们的孔形状可以被定制为球形或多边形,以避免孔周围的应力集中。 可以通过制造工艺来控制孔隙率和孔径。 与通过自传播高温合成(SHS)制造的其它多孔形状记忆合金相比,这些材料在试验过程中可表现出优异的假弹性和机械性能。 这些先进特性可能适用于但不限于矫形植入物,例如人造骨移植物,髋关节假体和椎间盘假体; 并且还用于工程目的,例如阻尼装置。