Tripod constant velocity joint
    2.
    发明授权
    Tripod constant velocity joint 有权
    三脚架等速万向节

    公开(公告)号:US08568244B2

    公开(公告)日:2013-10-29

    申请号:US13023837

    申请日:2011-02-09

    CPC classification number: F16D3/2055

    Abstract: A constant velocity joint for a drive system comprises: a tripod housing coupled to the first rotating shaft and having a plurality of guide grooves therein, each guide groove extending in an axial direction of the tripod housing; a spider coupled to the second rotating shaft and having a plurality of trunnions, each trunnion positioned in a corresponding guide groove of the tripod housing; and a spherical roller disposed between the trunnion and the guide groove of the tripod housing, and a plurality of needle rollers disposed between the trunnion and spherical roller. Each spherical roller is in angular contact with the guide groove of the tripod housing with two contact points displaced relative to a pitch circle diameter line of the tripod housing. The ratio of the length (CL) between two contact points of tripod housing groove to the length (SL) between two edges of spherical roller is between 0.5 and 0.85, and the ratio of the radius (TGR2) of the guide groove of the tripod housing to the radius (SRR) of the spherical roller is between 1.1 and 1.4.

    Abstract translation: 用于驱动系统的恒速接头包括:三脚架壳体,其联接到第一旋转轴并且在其中具有多个引导槽,每个引导槽沿三角架壳体的轴向方向延伸; 一个与所述第二旋转轴相连并且具有多个耳轴的蜘蛛,每个耳轴位于所述三脚架壳体的对应引导槽中; 以及设置在三角架壳体的耳轴和引导槽之间的球面滚子,以及设置在耳轴和球面滚子之间的多个滚针。 每个球面滚子与三脚架壳体的引导槽成角度接触,两个接触点相对于三脚架外壳的节圆直径线移动。 三脚架壳体槽的两个接触点与球面滚子的两个边缘之间的长度(SL)之间的长度(CL)的比率在0.5和0.85之间,并且三脚架的引导槽的半径(TGR2) 外壳到球面滚子的半径(SRR)在1.1和1.4之间。

    Preserving stopband characteristics of electromagnetic bandgap structures in circuit boards
    4.
    发明授权
    Preserving stopband characteristics of electromagnetic bandgap structures in circuit boards 失效
    保持电路板中电磁带隙结构的阻带特性

    公开(公告)号:US08288660B2

    公开(公告)日:2012-10-16

    申请号:US12244854

    申请日:2008-10-03

    Applicant: Tae Hong Kim

    Inventor: Tae Hong Kim

    Abstract: The stopband characteristics of an electromagnetic bandgap structure in a printed circuit board may be preserved by selectively forming slots in an additional conductive layer of the printed circuit board. For example, an electromagnetic bandgap structure may include a layer with a continuous conductive region and another layer with a periodically patterned region having a plurality of spaced-apart patches interconnected by branches. Additional conductive layers may be included within the printed circuit board without neutralizing the bandgap by forming slots in the conductive layers in general alignment with spaces between the patches.

    Abstract translation: 可以通过在印刷电路板的附加导电层中选择性地形成槽来保留印刷电路板中的电磁带隙结构的阻带特性。 例如,电磁带隙结构可以包括具有连续导电区域的层和具有周期性图案化区域的另一层,其具有通过分支互连的多个间隔开的贴片。 附加的导电层可以包括在印刷电路板中,而不会通过在导电层中形成与填隙之间的空间对准的槽而中和带隙。

    Systems and methods for electromagnetic band gap structure synthesis
    6.
    发明授权
    Systems and methods for electromagnetic band gap structure synthesis 有权
    电磁带隙结构合成的系统和方法

    公开(公告)号:US08060457B2

    公开(公告)日:2011-11-15

    申请号:US11854997

    申请日:2007-09-13

    CPC classification number: G06F17/5068

    Abstract: The present invention describes methods and apparatus for electromagnetic band gap structure synthesis. An exemplary embodiment of the present invention provides a method of electromagnetic band gap structure synthesis, which includes the step of providing a set of desired characteristics for an electromagnetic band gap structure. Furthermore, the method includes generating populations of patch shape members with a genetic algorithm routine and solving one or more of patch shape members of the populations with an electrodynamics modeling technique. Thereafter, the method includes the step of converting the output of the electrodynamics modeling technique into a set of response data for one or more of the patch shape members and calculating a fitness level for one or more of the sets of response data in comparison to the set of desired characteristics for the electromagnetic band gap structure. Next, the method includes the step of determining whether the fitness level of one of the patch shape members is within a predetermined tolerance. Subsequently, if none of the patch shape members provides a fitness level within the predetermined tolerance, then the steps of generating, solving, converting, calculating, and determining are repeated.

    Abstract translation: 本发明描述了用于电磁带隙结构合成的方法和装置。 本发明的一个示例性实施例提供了一种电磁带隙结构合成方法,其包括为电磁带隙结构提供一组所需特性的步骤。 此外,该方法包括使用遗传算法程序生成斑块形状成员的群体,并用电动力学建模技术解决群体中的一个或多个斑块形状成员。 此后,该方法包括以下步骤:将电动力学建模技术的输出转换成用于一个或多个补片形状构件的一组响应数据,并计算一组或多组响应数据的适应度水平,与 设置电磁带隙结构的所需特性。 接下来,该方法包括以下步骤:确定一个贴片形状构件的适合度是否在预定的容限内。 随后,如果贴片形状构件中没有一个在预定公差内提供适合度,则重复生成,求解,转换,计算和确定的步骤。

    PRESERVING STOPBAND CHARACTERISTICS OF ELECTROMAGNETIC BANDGAP STRUCTURES IN CIRCUIT BOARDS
    10.
    发明申请
    PRESERVING STOPBAND CHARACTERISTICS OF ELECTROMAGNETIC BANDGAP STRUCTURES IN CIRCUIT BOARDS 失效
    电路板电磁带结构的保护特性

    公开(公告)号:US20100084176A1

    公开(公告)日:2010-04-08

    申请号:US12244854

    申请日:2008-10-03

    Applicant: Tae Hong Kim

    Inventor: Tae Hong Kim

    Abstract: The stopband characteristics of an electromagnetic bandgap structure in a printed circuit board may be preserved by selectively forming slots in an additional conductive layer of the printed circuit board. For example, an electromagnetic bandgap structure may include a layer with a continuous conductive region and another layer with a periodically patterned region having a plurality of spaced-apart patches interconnected by branches. Additional conductive layers may be included within the printed circuit board without neutralizing the bandgap by forming slots in the conductive layers in general alignment with spaces between the patches.

    Abstract translation: 可以通过在印刷电路板的附加导电层中选择性地形成槽来保留印刷电路板中的电磁带隙结构的阻带特性。 例如,电磁带隙结构可以包括具有连续导电区域的层和具有周期性图案化区域的另一层,其具有通过分支互连的多个间隔开的贴片。 附加的导电层可以包括在印刷电路板中,而不会通过在导电层中形成与填隙之间的空间对准的槽而中和带隙。

Patent Agency Ranking