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    • 7. 发明申请
    • STUD SENSING DEVICE
    • STUD感应装置
    • US20070210785A1
    • 2007-09-13
    • US11692391
    • 2007-03-28
    • Hughes SANONERDesmond TSELawrence CHAN
    • Hughes SANONERDesmond TSELawrence CHAN
    • G01R19/00
    • G01R29/085G01V3/088
    • A multiple sensitivity stud sensing device for determining a location of objects behind a wall lining has a housing with a surface for moving over the wall lining. Within the housing are a capacitive sensor with first and second capacitances provided adjacent the surface and control circuitry. The control circuitry includes a detecting circuit connected to the sensor for providing a detection signal related to an imbalance between the first and second capacitances, a processor for receiving the detection signals signal and providing a display signal. A display is provided on the housing for indicating a location of an object behind the wall lining. The processor compares the detection signal to stored predetermined threshold values of detection signals associated with different wall lining thickness and displays a thickness value to the user.
    • 用于确定墙壁衬里后面的物体的位置的多灵敏度螺柱感测装置具有壳体,其具有用于在壁衬里移动的表面。 在壳体内是电容式传感器,其中第一和第二电容靠近表面和控制电路设置。 所述控制电路包括连接到所述传感器的检测电路,用于提供与所述第一和第二电容之间的不平衡相关的检测信号;处理器,用于接收所述检测信号信号并提供显示信号。 在外壳上提供显示器,用于指示墙壁后面的物体的位置。 处理器将检测信号与存储的与不同壁衬厚度相关联的检测信号的预定阈值进行比较,并向用户显示厚度值。
    • 8. 发明授权
    • Dioxane derivatives
    • 二恶烷衍生物
    • US5683623A
    • 1997-11-04
    • US392903
    • 1995-03-01
    • Lawrence ChanJohn William GoodbyPeter StyringChuan Chu Dong
    • Lawrence ChanJohn William GoodbyPeter StyringChuan Chu Dong
    • G02F1/13C07D319/06C07F5/02C09K19/34C09K19/40C07D407/00
    • C09K19/404C07D319/06C07F5/025C09K19/3402C09K2019/3422
    • Dioxane derivatives for use as components in liquid crystal devices (LCDs) of general formula (A), wherein X is CH or B; R.sup.1, R.sup.2 are each A.sup.1, OA.sup.1, OCOA.sup.2, or COOA.sup.2 ; A.sup.1 is a straight or branched chain alkyl group containing from 1 to 20 carbon atoms and may be substituted with one or more F or CN. A.sup.2 is a straight or branched chain alkyl group containing from 1 to 20 carbon atoms and may be substituted with one or more F or CN and if straight may be unsubstituted. Y.sup.1, Y.sup.2, Y.sup.3 may each be (CH.sub.2).sub.p, (CH.sub.2).sub.p COO or OCO(CH.sub.2).sub.p ; p is from 0 to 10, n is 0 or 1, m is 0 or 1, either or both of Z.sub.1 and Z.sub.2 are F and, when not F, are H; Y.sup.4 is a covalent bond or, when n is 0, may be (a) LCDs, containing the devices exhibit very fast switching speed, bi-stable characteristics, enhanced greyscale and storage capabilities and a wide viewing angle.
    • PCT No.PCT / GB93 / 01929 Sec。 371 1995年3月1日 102(e)1995年3月1日PCT PCT 1993年9月13日PCT公布。 公开号WO94 / 06885 (a)用作通式(A)的液晶装置(LCD)中的组分的二恶烷衍生物,其中X是CH或B;(A) R1,R2分别为A1,OA1,OCOA2或COOA2; A1是含有1至20个碳原子的直链或支链烷基,并且可被一个或多个F或CN取代。 A2是含有1至20个碳原子的直链或支链烷基,并且可以被一个或多个F或CN取代,如果直链可以是未取代的。 Y1,Y2,Y3各自为(CH 2)p,(CH 2)p COO或OCO(CH 2)p; p为0至10,n为0或1,m为0或1,Z1和Z2中的任一个或两个为F,当不为F时,为H; Y4是共价键,或者当n为0时,可以是(a)含有这些器件的LCD显示出非常快的开关速度,双稳态特性,增强的灰度和存储能力以及广视角。