Composite material jib
    2.
    发明授权
    Composite material jib 失效
    复合材料吊臂

    公开(公告)号:US06586084B1

    公开(公告)日:2003-07-01

    申请号:US09347509

    申请日:1999-07-02

    Abstract: At least one section of a jib of a crane, such as a mobile crane, includes a composite cross-section incorporating a layer of steel covered by one or more fiber composite layers. In a preferred embodiment, more than one fiber composite layer is included and the respective fiber layers are disposed in a criss-cross manner with respect to each other to enhance the overall strength of the telescopic part. Also, in a preferred embodiment the steel layer of the composite is on the interior of the telescopic part for minimizing thermal stresses due to temperature changes caused by sun loads. In another preferred embodiment, the composite fiber layers are disposed only in the zone of the cross-section of the telescopic part, which is subjected to tensile forces during use.

    Abstract translation: 诸如移动式起重机的起重机的起重臂的至少一个部分包括复合横截面,其包括被一个或多个纤维复合层覆盖的钢层。 在优选实施例中,包括多于一个的纤维复合层,并且相应的纤维层相对于彼此以十字交叉的方式设置,以增强伸缩部件的整体强度。 而且,在优选实施例中,复合材料的钢层位于伸缩部件的内部,用于最小化由于太阳载荷导致的温度变化引起的热应力。 在另一个优选实施例中,复合纤维层仅设置在伸缩部分的横截面的区域中,该伸缩部分在使用过程中受到张力的影响。

    Method to reduce partial discharge in high voltage stator coil's roebel filler
    5.
    发明授权
    Method to reduce partial discharge in high voltage stator coil's roebel filler 有权
    降低高压定子线圈罗宾填料中局部放电的方法

    公开(公告)号:US06228494B1

    公开(公告)日:2001-05-08

    申请号:US09203732

    申请日:1998-12-02

    Abstract: A filler material for the exterior surface of a high voltage coil having Roebeled strands is described. The filler material comprises an epoxy resin impregnated felt which is wrapped in a low resistance conductive tape. The conductive tape reduces potential gradients across the filler material, thereby reducing the occurrence of unwanted electrical discharges in the filler voids.

    Abstract translation: 描述了具有Roebeled绞线的高压线圈的外表面的填充材料。 填充材料包括环氧树脂浸渍的毡,其被包裹在低电阻导电带中。 导电胶带减少填充材料的潜在梯度,从而减少填料空隙中不需要的放电的发生。

    Composite flywheel rim with co-mingled fiber layers and methods for manufacturing same
    10.
    发明授权
    Composite flywheel rim with co-mingled fiber layers and methods for manufacturing same 有权
    具有共混纤维层的复合飞轮轮辋及其制造方法

    公开(公告)号:US06824861B2

    公开(公告)日:2004-11-30

    申请号:US09952283

    申请日:2001-09-13

    Applicant: Ward R. Spears

    Inventor: Ward R. Spears

    Abstract: A composite-based rim and methods for manufacturing such a rim are provided. The rim includes multiple fiber-based, co-mingled layers, wherein the strength and/or stiffness of the layers increases from the innermost layer of the rim to the outermost layer of the rim, but where the radial stress and strain generated in the rim decreases from the innermost layer to the outermost layer. Incorporation of this rim into a high stress and strain usage environment, such as a flywheel system, allows the rim to be spun at high speeds in order to generate high levels of kinetic energy while beneficially managing the amount of strain and radial stresses generated within the rim, and, in turn, minimizing or at least controlling the formation and propagation of cracks within the rim.

    Abstract translation: 提供了一种基于复合材料的边缘和用于制造这种边缘的方法。 边缘包括多个基于纤维的共混层,其中层的强度和/或刚度从边缘的最内层增加到边缘的最外层,但是在边缘中产生的径向应力和应变 从最内层减少到最外层。 将该轮辋结合到高应力和应变使用环境(例如飞轮系统)中允许轮辋以高速旋转以产生高水平的动能,同时有利地管理在内部产生的应变和径向应力的量 边缘,并且又使最小化或至少控制边缘内的裂缝的形成和扩展。

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