Rubber Crawler Having Metal Core for Improvement of Wheel Separation and Durability
    2.
    发明申请
    Rubber Crawler Having Metal Core for Improvement of Wheel Separation and Durability 有权
    具有金属芯的橡胶履带,用于改善车轮分离和耐用性

    公开(公告)号:US20120286566A1

    公开(公告)日:2012-11-15

    申请号:US13574733

    申请日:2010-12-13

    IPC分类号: B62D55/24

    CPC分类号: B62D55/244 E02F9/02

    摘要: The present invention relates to a rubber crawler having a metal core for improvement of wheel separation and durability, and comprises metal core extensions formed at predetermined intervals along the lengthwise direction of the metal core of the rubber crawler, thereby avoiding the phenomenon of wheel separation which occurs during crawler operation, and minimizing lug breakage due to foreign objects, bend fatigue of a metal core, metal core exposure and breakage of a tread portion, so that the durability performance is enhanced. According to an embodiment of the present invention, the rubber crawler having a metal core for improvement of wheel separation and durability comprises a lug formed to protrude on an external side surface and grounded on the ground; a steel cord disposed internally for enduring compressive load and the driving load of a tracked vehicle; a metal core which is embedded within the steel cord, and transfers the driving force of the engine; and metal core extensions which are embedded along both lengths on the basis of the center portion of the metal core, and prevents wheel separation of the metal core, wherein the metal core extensions are assembled on the mutually opposite surfaces of which are inclined at a predetermined angle, and the overlapped portion (center portion) surfaces of the metal core extensions are formed to have an angle of inclination to each other, thereby supporting the X axis, Y axis, and Z axis displacements.

    摘要翻译: 橡胶履带技术领域本发明涉及具有用于提高车轮分离和耐久性的金属芯的橡胶履带,并且包括沿着橡胶履带的金属芯的长度方向以预定间隔形成的金属芯延伸部,从而避免了车轮分离现象 在履带操作期间发生,并且使由于异物引起的凸耳断裂最小化,金属芯的弯曲疲劳,金属芯暴露和胎面部分的破损最小化,从而提高了耐久性能。 根据本发明的实施例,具有用于改善车轮分离和耐久性的金属芯的橡胶履带包括形成为在外侧表面突出并在地面上接地的凸耳; 在内部设置的钢帘线用于承受压缩载荷和履带车辆的驱动载荷; 嵌入钢帘线内的金属芯,并传递发动机的驱动力; 以及金属芯延伸部,其基于金属芯的中心部分沿着两个长度嵌入,并且防止金属芯的车轮分离,其中金属芯延伸部组装在相互相对的表面上倾斜预定的 角度,并且金属芯延伸部的重叠部分(中心部分)表面形成为具有彼此倾斜的角度,从而支撑X轴,Y轴和Z轴位移。

    Semiconductor chip package using flexible circuit board with central opening
    3.
    发明授权
    Semiconductor chip package using flexible circuit board with central opening 失效
    半导体芯片封装采用柔性电路板与中心开口

    公开(公告)号:US06252298B1

    公开(公告)日:2001-06-26

    申请号:US09081564

    申请日:1998-05-19

    IPC分类号: H01L23495

    摘要: An active surface of a semiconductor chip is attached to the bottom surface of a flexible circuit board having a central opening. Input/output pads on the active surface of the chip are electrically connected to a circuit layer on the top surface of the flexible circuit board through the opening. The semiconductor chip package can thus be of a size on the order of that of the chip. The circuit layer on the circuit board includes bonding pads for receipt of metal wires, land pads for receipt of terminals, and circuit traces connecting the pairs of the bonding and land pads, respectively. The input/output pads, the bonding pads, and the wires are encapsulated in an encapsulant formed by dispensing a liquid resin having a certain viscosity into the opening in the flexible circuit board. A dam around the opening prevents the liquid resin from overflowing. The flexible circuit board may further include a protective layer for protecting the circuit traces, a stiffener, or an adhesive layer thereunder. The protective layer may have a groove in which the dam is formed.

    摘要翻译: 半导体芯片的有源表面附接到具有中心开口的柔性电路板的底表面。 芯片的有源表面上的输入/输出焊盘通过开口电连接到柔性电路板的顶表面上的电路层。 因此,半导体芯片封装可以具有与芯片的尺寸相同的尺寸。 电路板上的电路层包括用于接收金属线的接合焊盘,用于接收端子的接地焊盘和连接接合焊盘和焊盘对的电路迹线。 输入/输出焊盘,接合焊盘和电线被封装在通过将具有一定粘度的液体树脂分配到柔性电路板中的开口中形成的密封剂中。 开口周围的水坝防止液体树脂溢出。 柔性电路板还可以包括用于保护电路迹线的保护层,加强件或其下的粘合剂层。 保护层可以具有形成坝的槽。

    Wire bond packages for semiconductor chips and related methods and
assemblies
    4.
    发明授权
    Wire bond packages for semiconductor chips and related methods and assemblies 失效
    用于半导体芯片和相关组件的引线键合封装

    公开(公告)号:US6013946A

    公开(公告)日:2000-01-11

    申请号:US831465

    申请日:1997-03-31

    摘要: A package for a semiconductor chip including a plurality of input/output pads includes an insulating layer and a plurality of conductive traces. The insulating layer has a first surface for bonding with the surface of the semiconductor chip so that the input/output pads are exposed adjacent the insulating layer. The conductive traces are provided on a second surface of the insulating layer opposite the first surface wherein each of the conductive traces corresponds to a respective one of the input/output pads. In particular, the conductive traces are adapted to receive a plurality of bonding wires each of which corresponds to a respective one of the input/output pads. Accordingly, each of the bonding wires can be bonded at a first end to the respective input/output pad and at a second end to the respective conductive trace. Furthermore, the input/output pads can be on an interior portion of the surface of the semiconductor chip, and the insulating layer can have an opening therein for exposing the input/output pads. Accordingly, a dam on the second surface of the insulating layer can be provided around the opening wherein each of the conductive traces extends from adjacent the opening under the dam to a portion of the insulating layer outside the dam. Related methods and assemblies are also discussed.

    摘要翻译: 包括多个输入/输出焊盘的半导体芯片的封装包括绝缘层和多个导电迹线。 绝缘层具有用于与半导体芯片的表面接合的第一表面,使得输入/输出焊盘在绝缘层附近露出。 导电迹线设置在与第一表面相对的绝缘层的第二表面上,其中每个导电迹线对应于输入/输出焊盘中的相应一个。 特别地,导电迹线适于接收多个接合线,每个接合线对应于相应的一个输入/输出焊盘。 因此,每个接合线可以在第一端处接合到相应的输入/输出焊盘,并且在第二端可以接合到相应的导电迹线。 此外,输入/输出焊盘可以在半导体芯片的表面的内部,并且绝缘层可以具有用于暴露输入/输出焊盘的开口。 因此,可以在开口周围设置绝缘层的第二表面上的堤坝,其中每个导电迹线从坝的下方的开口附近延伸到坝外部的绝缘层的一部分。 还讨论了相关方法和装配。

    Polarization Independent Wideband Reflectors and Methods for Their Manufacture

    公开(公告)号:US20170082786A1

    公开(公告)日:2017-03-23

    申请号:US15267830

    申请日:2016-09-16

    IPC分类号: G02B5/18 G02B27/42

    摘要: There is immense scientific interest in the properties of resonant thin films embroidered with periodic nanoscale features. This device class possesses considerable innovation potential. Accordingly, we report unpolarized broadband reflectors enabled by a serial arrangement of a pair of polarized subwavelength gratings. Optimized with numerical methods, the elemental gratings can be fabricated in various materials systems. Illustrative examples provided consist of a partially-etched crystalline-silicon films on a quartz substrate and amorphous silicon films on glass. The resulting reflectors exhibit extremely wide spectral reflection bands in one polarization. By arranging two such reflectors sequentially with orthogonal there results an unpolarized spectral band that exceeds those of the individual polarized bands. In the prototypes disclosed herein, there results zero-order reflectance exceeding 97% under unpolarized light incidence over a 500-nm-wide wavelength band. This wideband represents a ˜44% fractional band in the near infrared spectral band. The elemental polarization-sensitive reflectors based on one-dimensional resonant gratings have simple design, robust performance, and are straightforward to fabricate. Hence, this technology is a promising alternative to traditional multilayer thin-film reflectors especially at longer wavelengths of light where multilayer deposition may be infeasible or impractical

    Rubber crawler having metal core for improvement of wheel separation and durability
    8.
    发明授权
    Rubber crawler having metal core for improvement of wheel separation and durability 有权
    具有用于改善车轮分离和耐久性的金属芯的橡胶履带

    公开(公告)号:US09381959B2

    公开(公告)日:2016-07-05

    申请号:US13574733

    申请日:2010-12-13

    IPC分类号: B62D55/24 E02F9/02

    CPC分类号: B62D55/244 E02F9/02

    摘要: A rubber crawler having a metal core which comprises metal core extensions formed at predetermined intervals along the lengthwise direction of the metal core of the rubber crawler, thereby avoiding the phenomenon of wheel separation which occurs during crawler operation Wherein the metal core extensions are assembled on the mutually opposite surfaces of which are inclined at a predetermined angle, and the overlapped portion (center portion) surfaces of the metal core extensions are formed to have an angle of inclination to each other, thereby supporting the X axis, Y axis, and Z axis displacements.

    摘要翻译: 一种具有金属芯的橡胶履带,其包括沿着橡胶履带的金属芯的长度方向以预定间隔形成的金属芯延伸部,从而避免了在履带式作业期间发生的车轮分离现象,其中金属芯延伸部组装在 相互相对的表面以预定角度倾斜,并且金属芯延伸部的重叠部分(中心部分)表面形成为具有彼此的倾斜角度,从而支撑X轴,Y轴和Z轴 位移。