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19 条记录 (耗时 0.01 秒)

    Systems and methods for wirelessly transmitting data from a utility meter
    8.
    发明授权
    Systems and methods for wirelessly transmitting data from a utility meter 失效
    从公用事业仪表无线传输数据的系统和方法

    公开(公告)号：US06946972B2

    公开(公告)日：2005-09-20

    申请号：US10056970

    申请日：2002-01-25

    申请人： Wilfred Mueller ,  Roderick Michael Johnson ,  Dane Blackwell ,  Patrick C. Hamilton ,  Dennis M. Needham ,  Allan L. Scribner

    发明人： Wilfred Mueller ,  Roderick Michael Johnson ,  Dane Blackwell ,  Patrick C. Hamilton ,  Dennis M. Needham ,  Allan L. Scribner

    IPC分类号： G08C17/02 ,  C08B23/00

    CPC分类号： H04Q9/00 ,  H04Q2209/60

    摘要： A method for wirelessly transmitting data from an utility meter, such as an electric meter, is disclosed. A microprocessor housed inside an energy meter obtains readings of various power indicia, stores the readings, processes the buffer to determine an efficient means of formatting the data for transmission using a radio frequency communications link. The method examines the plurality of readings and determines if values can be communicated by transmitting an initial reading and followed by the difference of the next reading from the previous reading. A special indication is transmitted to turn ‘on’ compression and allow the receiver to propertly interpret received data. Other indicators are transmitted to turn ‘off’ compression, turn on compression for a pre-defined limited duration, or vary the range of the difference between readings.

    摘要翻译： 公开了一种从诸如电表之类的公用事业仪表无线传输数据的方法。 容纳在能量计内的微处理器获得各种功率标记的读数，存储读数，处理缓冲器以确定用于使用射频通信链路进行传输的数据格式化的有效手段。 该方法检查多个读数并且确定是否可以通过发送初始读数并且跟随下一个读数与先前读数的差异来传达值。 发送特殊指示以打开“打开”压缩，并允许接收器适当地解释接收的数据。 传输其他指示灯以“关闭”压缩，打开预定义有限持续时间的压缩，或改变读数差值的范围。

    Lignocellulosic molding method and product
    9.
    发明授权
    Lignocellulosic molding method and product 失效
    LIGNOCELLULOSIC模制方法和产品

    公开(公告)号：US3900334A

    公开(公告)日：1975-08-19

    申请号：US40144473

    申请日：1973-09-27

    申请人： UNIV CALIFORNIA

    发明人： BRINK DAVID L

    IPC分类号： C08H8/00 ,  C08B23/00 ,  C08B27/24 ,  C08B27/52

    CPC分类号： C08H8/00 ,  C08K5/09 ,  C08K5/17 ,  C08L97/02

    摘要： Particulate lignocellulosic materials containing water are subjected to oxidation with nitric acid, oxygen or with a mixture of oxygen and nitric acid under conditions adapted to form carboxylic groups, along with some carbonyl groups. As a result of this treatment the oxidized material becomes activated so as to undergo self-bonding when it is later molded under elevated conditions of temperature and pressure. This oxidation reaction proceeds at elevated temperatures until there has been a net consumption by the lignocellulose of about 1.25 to 25 weight percent of oxygen as supplied either as such and/or by way of nitric acid. These percentages are calculated on a dry lignocellulosic material basis. The oxidized product can then be pressed into the desired shape under elevated pressures and temperatures effective to induce esterification or other molecular cross-linking reactions between functional groups present in the lignocellulosic molecule or between such groups and those of other chemicals which are added, thus providing a molded structure. Board-shaped as well as other molded products of high strength and excellent resistance to moisture absorption can thus be obtained from a variety of lignocellulosic raw materials.