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    Method of joining refractory metal members
    1.
    发明授权
    Method of joining refractory metal members 失效
    焊接金属成员的方法

    公开(公告)号：US3584372A

    公开(公告)日：1971-06-15

    申请号：US3584372D

    申请日：1968-05-14

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： LARSON DANIEL A

    IPC: B23K28/02 ,  H01J5/32 ,  B23K31/02 ,  B23K35/38

    CPC classification number: H01J5/32 ,  B23K28/02

    Abstract: A METHOD FOR SEALING THE NIOBIUM END CAP OF A CERAMIC ARC TUBE TO THE TANTALUM EXHAUST AND FILL TUBULATION COMPRISING THE STEPS OF: PLACING THE TUBULATION THROUGH A CLOSE FIT APERTURE IN THE END CAP, POSITIONING A NIOBIUM OR TITANIUM RING OVER THE TUBULATION IN A POSITION CONTACTING BOTH THE END CAP AND THE TUBULATION AT THEIR JUNCTURE, AND PASSING SUFFICIENT ELECTRIC CURRENT THROUGH THE TUBULA-

    TION TO CAUSE THE RING TO MELT AND SEAL THE END CAP TO THE TUBULATION.

    Method of operating a high-pressure gaseous discharge lamp with improved efficiency
    6.
    发明授权
    Method of operating a high-pressure gaseous discharge lamp with improved efficiency 失效
    具有改进效率的高压气体放电灯操作方法

    公开(公告)号：US3624447A

    公开(公告)日：1971-11-30

    申请号：US3624447D

    申请日：1969-06-25

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： YOUNG ROBERT G ,  LARSON DANIEL A ,  MARKS LESLIE M JR

    IPC: H05B41/38 ,  H05B37/00 ,  H05B41/16

    CPC classification number: H05B41/38

    Abstract: The efficiency of a conventional high-pressure gaseous discharge lamp, such as a 400 watt mercury-vapor lamp, is increased by pulse-operating the lamp at power loadings which are higher than the average rated power input of the lamp. The highpower pulses are of such magnitude and duration that the resultant average power input does not exceed the power loading for which the lamp is designed and rated. This is achieved by generating a series of high-voltage pulses with a suitable circuit and applying the pulses to the lamp electrodes. Optimum results in the case of conventional high-pressure mercury-vapor discharge lamps having ratings of from 100 to 1,000 watts are obtained with pulses that have a magnitude of from 60 to 600 volts, are 0.2 to 5 milliseconds in duration and have a repetition rate of from 50 to 500 pulses per second. In order to prevent arc extinction between pulses, the latter are preferably superimposed on a ''''keep-alive'''' DC potential that constitutes from three to 20 percent of the rated average power input of the lamp.

    High-pressure gaseous discharge lamp including a starting electrode
    9.
    发明授权
    High-pressure gaseous discharge lamp including a starting electrode 失效
    高压气体放电灯，包括起动电极

    公开(公告)号：US3634718A

    公开(公告)日：1972-01-11

    申请号：US3634718D

    申请日：1970-02-06

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： LARSON DANIEL A

    IPC: H01J61/98 ,  H01J61/54

    CPC classification number: H01J61/98

    Abstract: Ignition of the arc between the main electrodes of a highpressure gaseous discharge lamp is achieved by placing an integral thermionic starting electrode adjacent one of the main electrodes and then concurrently heating the starting electrode and applying a low-voltage starting voltage to the starting electrode and the adjacent main electrode. After the resulting auxiliary arc has heated the adjacent main electrode, the operating voltage is applied across the main electrodes and the starting voltage is terminated, thus causing the arc to shift from the thermionic electrode to the other main electrode. The starting electrode is heated electrically by connecting it to an external power source through a pair of leads sealed through the lamp envelope.

    Abstract translation: 高压气体放电灯的主电极之间的电弧点火是通过将一体的热离子起始电极放置在一个主电极附近，然后同时加热起始电极并向起始电极施加低电压启动电压 和相邻的主电极。 在所产生的辅助电弧加热了相邻的主电极之后，在主电极上施加工作电压，并且起始电压终止，从而使电弧从热离子电极移动到另一个主电极。 通过通过灯泡密封的一对引线将起动电极连接到外部电源上来进行电加热。

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