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    • 8. 发明授权
    • Vacuum chamber assembly for supporting a workpiece
    • 用于支撑工件的真空室组件
    • US09341942B2
    • 2016-05-17
    • US13818567
    • 2011-08-23
    • Fardad HashemiDouglas C. WatsonLorri L. Watson
    • Fardad HashemiDouglas C. Watson
    • G03F7/20G03F1/64G03F1/66H01L21/67G03B27/64
    • G03F1/64G03B27/64G03F1/66G03F7/70841G03F7/70908H01L21/6719
    • A chamber assembly (26) for providing a sealed chamber (40) adjacent to a workpiece (28) to counteract the influence of gravity on the workpiece (28) includes a chamber housing (244), and a seal assembly (33) that expands and/or contracts to better seal against the workpiece (28). Further, the chamber assembly (26) can include one or more transducer assemblies (34) that expand or contract to quickly respond to leaks or injections of fluid in chamber assembly (26) to maintain a constant and stable chamber pressure in the chamber assembly (26). Moreover, the chamber assembly (26) can utilize a pressure source (35) that directs a lager amount of fluid (374) through a fluid passageway (368) to accurately maintain the pressure within the chamber assembly (26).
    • 用于提供与工件(28)相邻的密封腔(40)以抵抗重力对工件(28)的影响的室组件(26)包括腔室壳体(244)和膨胀的密封组件(33) 和/或收缩以更好地密封工件(28)。 此外,腔室组件(26)可以包括一个或多个换能器组件(34),其膨胀或收缩以快速响应腔室组件(26)中的流体的泄漏或喷射,以保持腔室组件中恒定且稳定的腔室压力( 26)。 此外,腔室组件(26)可以利用压力源(35),该压力源将较大量的流体(374)引导通过流体通道(368)以精确地保持腔室组件(26)内的压力。