公开(公告)号：US3704927A

公开(公告)日：1972-12-05

申请号：US3704927D

申请日：1968-05-27

Applicant: CHARLES L TOOMEY ,  GERALD D BUTLER ,  SYLVANIA ELECTRIC PROD

Inventor： TOOMEY CHARLES L ,  BUTLER GERALD D

IPC: H01J9/04 ,  H01J7/20

CPC classification number: H01J9/042

Abstract: A chamber for processing fluorescent lamp cathodes has a dividing wall with openings receiving the unsealed exhaust tube of the glass stem on which the cathode is supported. Adjacent each opening are conductors connecting the cathode leads to an adjustable source of heating current. While heating the cathodes at scheduled currents, a controlled flow of inert gas, e.g. nitrogen, enters the inlet portion of the chamber on one side of the wall thence through the exhaust tube of each stem past the cathode on the stem in the outlet portion of the chamber on the other side of the wall. The controlled flow of gas allows a carbon dioxide atmosphere at the cathode during reduction of alkaline earth metal carbonate on the cathode to its oxide, while the gas flow provides an otherwise inert environment.

Abstract translation: 用于处理荧光灯阴极的室具有分隔壁，开口接收玻璃杆的未密封的排气管，阴极被支撑在其上。 相邻的每个开口是将阴极引线连接到可调节的加热电流源的导体。 在以预定电流加热阴极的同时，控制惰性气体的流动，例如， 氮气通过每个杆的排气管通过壁的另一侧上的室的出口部分中的杆上的阴极进入室的一侧的入口部分。 气体的受控流动允许在阴极将碱土金属碳酸盐还原为其氧化物时在阴极处形成二氧化碳气体，而气流提供其它惰性环境。

公开(公告)号：US3576671A

公开(公告)日：1971-04-27

申请号：US3576671D

申请日：1968-05-27

Applicant: SYLVANIA ELECTRIC PROD

Inventor： TOOMEY CHARLES L ,  BUTLER GERALD D

IPC: H01J9/04 ,  H01J9/12

CPC classification number: H01J9/042

Abstract: SO AS TO PRODUCE A BARRIER LAYER OF TUNGSTEN COMPOUND BETWEEN THE TUNGSTEN WIRE AND BARIUM OXIDE AND INHIBITING THE RELEASE OF FREE BARIUM.

DURING THE PROCESS OF HEATING A FLUORESCENT LAMP TUNGSTEN WIRE CATHODE AND REDUCING ITS ALKALINE EARTH CARBONATE TO THE CORRESPONDING OXIDE, A FLOW OF NITROGEN OR OTHER INERT GAS IS MAINTAINED PAST THE CATHODE, THE FLOW OF INERT GAS BEING CONTROLLED AT A SLOW RATE WHICH MAINTAINS AN ATMOSPHERE OF CARBON DIOXIDE ADJACENT THE CATHODE