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    • 84. 发明授权
    • Enhanced compound pendulums and systems
    • 增强复合摆和系统
    • US08475034B2
    • 2013-07-02
    • US12695926
    • 2010-01-28
    • W. Daniel Hillis
    • W. Daniel Hillis
    • G04B17/22
    • G04B17/02G04B17/225
    • Enhanced compound pendulums provide thermal compensation and/or barometric compensation, such as for a mechanical clock system. The enhanced compound pendulums are simple to construct, and can be more easily compensated than conventional, single-bob pendulums. The enhanced compound pendulums typically comprise material that is added above the point of rotation. Thermal expansion factors for components of the enhanced compound pendulums may preferably be chosen to provide thermal compensation to the first order. In some embodiments of enhanced compound pendulums, volume is added above the pivot to provide barometric compensation, such as by equalizing the moments above and below the pivot, or by providing geometric symmetry above and below the pivot, with a lower density above the pivot.
    • 增强的复合摆锤提供热补偿和/或气压补偿,例如用于机械时钟系统。 增强型复合摆动构造简单,可以比传统的单摆锤更容易补偿。 增强的复合摆锤通常包括在旋转点之上添加的材料。 可以优选选择增强复合摆的部件的热膨胀因子以提供对第一级的热补偿。 在增强复合摆的一些实施例中,在枢轴上方增加体积以提供气压补偿,例如通过平衡枢轴上方和下方的力矩,或者通过在枢轴上方和下方提供几何对称,在枢轴上方具有较低的密度。
    • 85. 发明申请
    • Low-Displacement Pendulum
    • 低位摆
    • US20070283586A1
    • 2007-12-13
    • US11734751
    • 2007-04-12
    • W. Hillis
    • W. Hillis
    • G01C9/12G04B17/02
    • G04B17/02
    • A gravity pendulum, referred to as a low-displacement pendulum because it does not displace air as it rotates, is disclosed. The low-displacement pendulum uses an unbalanced wheel instead of the more conventional suspended bob. Because the pendulum does not displace air as it rotates, it eliminates an important component of air drag that causes energy loss in a normal pendulum. The low-displacement pendulum also eliminates errors caused by variations in barometric pressure. In addition, it can be easily thermally compensated without the use of special materials, such as Invar.
    • 公开了一种重力摆,称之为低排量摆,因为它不会随着其旋转而移动空气。 低排量摆锤使用不平衡轮,而不是更常规的悬挂锤。 因为钟摆旋转时不会使空气移位,所以它消除了在正常摆锤中造成能量损失的空气阻力的重要组成部分。 低排量摆也消除了由大气压力变化引起的误差。 此外,它可以容易地热补偿,而不使用特殊材料,如Invar。