Variable displacement fluid pump with improved wideband neutral
    5.
    发明授权
    Variable displacement fluid pump with improved wideband neutral 失效
    可变排量流体泵具有改进的宽带中性

    公开(公告)号:US4968227A

    公开(公告)日:1990-11-06

    申请号:US448403

    申请日:1989-12-11

    摘要: A variable displacement, rotary fluid pressure pump (11) is disclosed of the type having a cam ring member (25) which is movable, in response to rotation of a control shaft (35), between a neutral position (FIG. 5) and a displaced position (FIG. 4). The pump housing (13, 15) includes a support member (25), and they cooperate to define a high-pressure fluid passage (51). In communication with the passage (51) is a recess (71), in which is disposed a dampening shoe (73). The dampening shoe is biased by high-pressure fluid in the passage (51) into engagement with an adjacent surface (77) of the cam ring (25). The surface (77) defines a neutral fluid passage (79), and the dampening shoe (73) defines a restricted opening (85). When the cam ring (25) is in the displaced position, the restricted opening (85) is blocked from communication with the neutral passage (79), but as the cam ring is returned to its neutral position, the opening (85) begins to communicate with the neutral passage (79), thus providing the pump with an increased neutral band overlap.

    摘要翻译: 公开了一种具有凸轮环构件(25)的类型的可变排量的旋转流体压力泵(11),该凸轮环构件可响应于控制轴(35)在中间位置(图5)和 位移位置(图4)。 泵壳体(13,15)包括支撑构件(25),并且它们配合以限定高压流体通道(51)。 与通道(51)连通的是凹槽(71),其中设置有阻尼鞋(73)。 阻尼鞋被通道(51)中的高压流体偏压成与凸轮环(25)的相邻表面(77)接合。 所述表面(77)限定中性流体通道(79),所述阻尼滑板(73)限定限制开口(85)。 当凸轮环(25)处于位移位置时,限制开口(85)被阻止与中性通路(79)的连通,但是当凸轮环返回其中立位置时,开口(85)开始 与中性通道(79)连通,从而为泵提供增加的中性带重叠。

    Speed equalizing linkage design for dual hydrostatic transmissions
    6.
    发明授权
    Speed equalizing linkage design for dual hydrostatic transmissions 有权
    双液压传动的速度均衡联动设计

    公开(公告)号:US07255193B2

    公开(公告)日:2007-08-14

    申请号:US11093467

    申请日:2005-03-30

    IPC分类号: A01D34/68

    摘要: An HST propel system includes first and second pumps having displacements variable in response to movement of first (31) and second (33) control shafts, respectively; and a linkage arrangement for moving the control shafts in unison in response to movement of an operator input (37). The linkage arrangement comprises a crank arm (35) rotatable about its axis in response to movement of the input device, first (41) and second (51) input arms fixed relative to the crank arm, and first (45) and second (55) elongated control rods pivotally connected to the input arms. The system includes a swivel connector (43) cooperating with its input arm to define a swivel axis (S.A.1), fixed relative to the axis of the crank arm, and a swivel connector (53) cooperating with its input arm to define a swivel axis (S.A.2), moveable relative to the axis of the crank arm for straight tracking adjustment.

    摘要翻译: HST推进系统包括分别响应于第一(31)和第二(33)控制轴的移动而具有可变位移的第一和第二泵; 以及用于响应于操作者输入(37)的移动而一致地移动控制轴的联动装置。 连杆装置包括响应于输入装置的移动而围绕其轴线旋转的曲柄臂(35),相对于曲柄臂固定的第一(41)和第二(51)输入臂,以及第一(45)和第二(55) )细长的控制杆,可枢转地连接到输入臂。 该系统包括与其输入臂协作以限定相对于曲柄臂的轴线固定的旋转轴线(SA1)的旋转连接器(43)和与该曲柄臂的轴线配合的旋转连接器(53) 其输入臂以限定可相对于曲柄臂的轴线移动的用于直线跟踪调节的旋转轴线(SA 2 2)。

    Synthetic HIV-2 envelope genes containing modifications that lead to optimized expression in bacteria
    7.
    发明授权
    Synthetic HIV-2 envelope genes containing modifications that lead to optimized expression in bacteria 失效
    含有导致细菌表达最佳化的修饰的合成的HIV-2包膜基因

    公开(公告)号:US06538127B1

    公开(公告)日:2003-03-25

    申请号:US08443530

    申请日:1995-05-18

    IPC分类号: C07H2104

    摘要: The present invention provides a method of synthesizing genes encoding unique HIV-1 and HIV-2 envelope proteins and their fragments, thereby allowing overexpression of these proteins in E. coli. The HIV envelope proteins and their fragments have been expressed at high levels as individual proteins or in fusion with other proteins. The HIV envelope proteins thus expressed in E. coli can be effectively used for the detection of exposure to HIV as well as the discrimination of HIV-1 and HIV-2.

    摘要翻译: 本发明提供了合成编码唯一HIV-1和HIV-2包膜蛋白及其片段的基因的方法,由此允许这些蛋白质在大肠杆菌中的过表达。 HIV包膜蛋白及其片段已被高度表达为单个蛋白质或与其他蛋白质融合。 因此在大肠杆菌中表达的HIV包膜蛋白可以有效地用于检测HIV的暴露以及HIV-1和HIV-2的区别。