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    • 25. 发明申请
    • Apparatus and method for generating calibration gas
    • 用于产生校准气体的装置和方法
    • US20050000981A1
    • 2005-01-06
    • US10610632
    • 2003-07-02
    • Wenfeng PengDavid GreenRobert Stewart
    • Wenfeng PengDavid GreenRobert Stewart
    • G01N21/27G01N33/00B67D5/00
    • G01N33/0006G01N21/278
    • An apparatus and method for generating a low concentration of gas within a carrier gas flow employing one or more miniature one-piece cylinders filled under pressure with a pure gas, or a concentrated gas balanced with an inert gas or gas mixture. Released from the cylinder through a pierced or other controlled opening, the flow of the gas is regulated by a pressure regulator and a micro orifice to be blended into a steady stream of diluent gas, typically ambient air, to form a desired gas concentration. No gas is generated if the pressure of the gas in the cylinder, which is monitored constantly by a pressure transducer, is below a predetermined level. The apparatus can be built into a portable device, or an automated docking station (or calibration station) for testing and calibrating gas detection and monitoring instruments, or into a fixed gas detection system for performing such functions.
    • 一种用于在载气流中产生低浓度气体的装置和方法,该装置和方法使用一种或多种用纯气体在压力下填充的微型一体式气瓶,或与惰性气体或气体混合物平衡的浓缩气体。 通过穿孔或其他控制的开口从气缸释放,气体的流动由压力调节器和微孔调节以混合到稳定的稀释气体流(通常为环境空气)中以形成期望的气体浓度。 如果由压力传感器不断监测的气缸中的气体压力低于预定水平,则不产生气体。 该装置可以内置在用于测试和校准气体检测和监测仪器的便携式设备或自动对接站(或校准站)中,或用于执行这些功能的固定气体检测系统中。
    • 29. 发明授权
    • Load indicating fastener and method of manufacture
    • 负载指示紧固件和制造方法
    • US07635243B2
    • 2009-12-22
    • US11501993
    • 2006-08-10
    • Jonathan M. TurnerNicholas StrumbosRobert Stewart
    • Jonathan M. TurnerNicholas StrumbosRobert Stewart
    • F16B31/02F16B43/00F16B29/34
    • F16B31/028
    • A load indicating fastener comprising a load indicator and a fastener body. The load indicator comprises an annular body defining a through hole having a minimum diameter and a plurality of protuberances integral with a first face of the annular body and a corresponding plurality of indentations in a second face of the annular body opposite from the first face. The fastener body comprises a series of threads, a head defining a contact surface, and a shank depending from the contact surface. The shank includes a first portion having a first outside diameter less than the through hole minimum diameter such that the load indicator is received on the shank first portion and a second portion including at least one radially extending member having a second outside diameter greater than the through hole minimum diameter such that the load indicator is retained on the fastener body thereby.
    • 负载指示紧固件,包括负载指示器和紧固件主体。 负载指示器包括环形体,其限定具有最小直径的通孔和与环形体的第一面成一体的多个突出部,以及与第一面相对的环形体的第二面中的相应的多个凹陷。 紧固件主体包括一系列螺纹,限定接触表面的头部和从接触表面悬垂的柄部。 柄包括具有小于通孔最小直径的第一外径的第一部分,使得负载指示器被容纳在柄第一部分上,第二部分包括至少一个径向延伸部件,该第二部分具有大于通孔的第二外径 孔最小直径,使得负载指示器由此保持在紧固件主体上。