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    Indicator tube with leads extending through mesa to support cathodes
    1.
    发明授权
    Indicator tube with leads extending through mesa to support cathodes 失效
    带有引导线的指示器通过MESA延伸以支持阴极

    公开(公告)号：US3629637A

    公开(公告)日：1971-12-21

    申请号：US3629637D

    申请日：1970-04-01

    Applicant: BURROUGHS CORP

    Inventor： BOYER JAMES THOMAS

    IPC: H01J17/49 ,  H01J61/66 ,  H01J17/48

    CPC classification number: H01J17/49 ,  H01J2893/0069

    Abstract: This application discloses an indicator tube which includes, in a gas-filled envelope, a stack of cathodes having upper and lower leads which are sealed in unitary bodies of insulating material, and an anode assembly which includes a back plate behind the cathodes and an optical screen in front of the cathodes. The upper body of insulating material which secures the upper cathode leads is rigidly secured between the anode back plate and screen. Also disclosed is a method of making an indicator tube electrode assembly which comprises stacking cathode electrodes in a mold upside down, the cathodes having upper and lower leads. The upper leads, which face down, are positioned in a container filled with powdered glass and placed at the bottom of the mold. The lower leads, which face up, are threaded on a preformed glass disk which ultimately forms the base of the tube envelope. The entire assembly is heated to cause the glass powder and the glass disk to melt and form a strong, rigid mount for the cathodes through their upper and lower leads, when the assembly is allowed to cool. In a modification of the tube structure, which is particularly adapted for use with the above-described assembly method, the lower glass disk is replaced by powdered glass held in a suitable container in which it is melted and then solidified to form the stem of the tube.

    Gas discharge tube with cold cathode suitable for the simultaneous reproduction of two legible characters
    2.
    发明授权
    Gas discharge tube with cold cathode suitable for the simultaneous reproduction of two legible characters 失效
    具有冷阴极管的气体放电管适用于同时生成两个超大字符

    公开(公告)号：US3581138A

    公开(公告)日：1971-05-25

    申请号：US3581138D

    申请日：1969-01-08

    Applicant: PHILIPS CORP

    Inventor： HENDRIKS ADRIANUS ANTHONIUS MA

    IPC: H01J17/49 ,  H01J61/66

    CPC classification number: H01J17/49 ,  H01J2893/0069

    Abstract: A gas discharge tube for reproducing two independently switchable legible characters which adjoin each other and constitute two groups, the characters being secured to annular frames of equal dimensions but having dimensions which are smaller than the frame and the groups being surrounded by a partially perforated anode. The two groups of characters are associated with a single electrode set. Since the characters are smaller than the associated frame, two characters associated with different groups can be reproduced.

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