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    • 62. 发明申请
    • Reusable Inversion Sleeve Assembly for Inversion of Cured in Place Liners
    • 可重复使用的反向套管组件,用于在内衬固化的反转
    • US20080072982A1
    • 2008-03-27
    • US11847018
    • 2007-08-29
    • Franklin DriverNeil BirchlerKyle CostaRichard PolivkaWeiping Wang
    • Franklin DriverNeil BirchlerKyle CostaRichard PolivkaWeiping Wang
    • F16L55/18F16L55/163
    • F16L55/1651B29C63/36F16L55/1654
    • Installation of a flexible cured in place liner by inverting the liner utilizing an inversion sleeve assembly with an installation apparatus having at least one selectively operable rigid gland. The sleeve assembly includes a sleeve portion of an absorbable material secured in an apparatus with an inversion boot fitted at the distal end with an inlet port for inversion and/or curing fluid. The sleeve assembly and apparatus are particularly well suited for inverting with air and curing the liner with steam introduced through a perforated lay flat hose using an apparatus with two glands. The installation sleeve is the same dimension as the liner to be installed and is reusable thereby substantially reducing the set up time to install using the dual gland apparatus. Preferably, the flexible sleeve is a length of dry cured in place liner inverted on to itself to expose two impregnable surfaces. The sleeve may have a built in fluid inlet port for use with a dual gland apparatus.
    • 通过使用具有至少一个选择性操作的刚性压盖的安装装置的倒置套筒组件来翻转衬套来安装柔性固化的衬里。 套筒组件包括固定在装置中的可吸收材料的套筒部分,该装置具有安装在远端的反转靴,其具有用于反转和/或固化流体的入口。 套筒组件和装置特别适用于使用具有两个压盖的装置通过空气翻转和固化通过穿孔平铺软管引入的蒸汽的衬套。 安装套筒的尺寸与待安装的衬垫相同,可重复使用,从而大大减少了使用双压盖装置进行安装的安装时间。 优选地,柔性套筒是一定长度的干燥固化衬垫,其倒置在其自身上以暴露两个浸渍表面。 套筒可以具有用于双压盖装置的内置流体入口。
    • 68. 发明授权
    • Temperature-compensated power sensing circuit for power amplifiers
    • 用于功率放大器的温度补偿功率检测电路
    • US07071783B2
    • 2006-07-04
    • US10938779
    • 2004-09-10
    • Ikuroh IchitsuboWeiping Wang
    • Ikuroh IchitsuboWeiping Wang
    • H03G3/30
    • H03G3/3042
    • An amplifier circuit for amplifying radio frequency signals having temperature compensation and bias compensation includes a radio frequency power amplifier that receives an input radio frequency signal and outputs an amplified radio frequency signal, and a first transistor performing as a detector diode with its collector and base connected. The base of the first transistor receives the amplified radio frequency signal from the power amplifier, a second DC bias input signal from a regulated DC source, and a third power-sensing signal. The amplifier circuit further includes a second transistor to amplify the DC component of the RF signal from the base of the first transistor. The base of the second transistor is coupled to the base of the first transistor. The collector of the second transistor outputs the power-sensing signal, which is coupled to the regulated DC source through a resistor.
    • 用于放大具有温度补偿和偏置补偿的射频信号的放大器电路包括射频功率放大器,其接收输入射频信号并输出​​放大的射频信号;以及第一晶体管,其作为检测器二极管,其集电极和基极连接 。 第一晶体管的基极接收来自功率放大器的放大射频信号,来自稳压DC源的第二DC偏置输入信号和第三功率感测信号。 放大器电路还包括第二晶体管,用于放大来自第一晶体管的基极的RF信号的DC分量。 第二晶体管的基极耦合到第一晶体管的基极。 第二晶体管的集电极输出功率感测信号,该功率感测信号通过电阻耦合到调节的直流电源。