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公开(公告)号：US5514930A
公开(公告)日：1996-05-07
申请号：US262698
申请日：1994-06-20
Applicant: Masataka Santoku , Jyoji Karasawa , Daichi Imabayashi
Inventor： Masataka Santoku , Jyoji Karasawa , Daichi Imabayashi
Abstract: An electron gun cathode structure includes a support member made of an insulating material, a first grid fixed to the support member, and a cathode disposed on the side of the support member opposite to the first grid. A thermal expansion .DELTA.L.sub.s /L.sub.s of the insulating material constituting the support member due to heat from the cathode is larger than a thermal expansion .DELTA.L.sub.G /L.sub.G of a material constituting the first grid due to heat from the cathode. A manufacturing method of an electron gun cathode structure includes preparing a member including a first face and a second face having a step therebetween, a height of the step being equal to a predetermined distance d.sub.12, placing a first grid on the first face, placing a spacer on the second face, placing an insulating support member on the first grid and the spacer, and grinding a top surface of the spacer opposite to its surface that is fixed to the support member so that an actual distance d.sub.12 becomes a desired value. Further, a distance d between the top surface of the spacer and a cathode is measured with a non-contact type distance measuring instrument, and a position of the cathode with respect to the first grid is so set that a difference d-d.sub.12 becomes a desired value.
Abstract translation: 电子枪阴极结构包括由绝缘材料制成的支撑构件，固定到支撑构件的第一栅极和设置在与第一栅极相对的支撑构件侧的阴极。 由于来自阴极的热而构成支撑构件的绝缘材料的热膨胀DELTA Ls / Ls大于由于来自阴极的热量而构成第一栅极的材料的热膨胀DELTA LG / LG。 电子枪阴极结构的制造方法包括：准备包括第一面和第二面的构件，其间具有台阶，台阶的高度等于预定距离d12，将第一栅格放置在第一面上， 在第二面上设置隔离物，将绝缘支撑构件放置在第一格栅和间隔件上，并且研磨与其固定到支撑构件的表面相对的间隔件的顶表面，使得实际距离d12变为期望值。 此外，用非接触型距离测量仪测量间隔物的顶表面和阴极之间的距离d，并且阴极相对于第一栅极的位置被设定为使得差d-d12成为 所需值。
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72.发明授权Thermionic cathode with continuous bimetallic wall having varying wall thickness and internal blackening 失效具有连续双金属壁的热阴极具有变化的壁厚和内部变黑
公开(公告)号：US5422536A
公开(公告)日：1995-06-06
申请号：US101157
申请日：1993-08-03
Applicant: John R. Hale , Jeffrey M. Farina
Inventor： John R. Hale , Jeffrey M. Farina
Abstract: A cathode sheath for a thermionic electron-gun cathode. The sheath is substantially in the form of a hollow cylinder and has an outer surface and an inner surface, a central axis, a closed end and an axially-opposite open end, and a side wall extending between the closed end and the open end. The sheath is a continuous bimetallic laminate having a first layer of material forming the inner surface and a second layer of electron-emission (donor) material overlying substantially the entirety of the first layer and forming the outer surface. The laminate has a preselected thickness at the closed end and has a thickness at the side wall which varies along the central axis. The outer surface of the bimetallic laminate is substantially unreactive with oxygen whereas the inner surface is more readily reactive with oxygen. When the cathode sheath is heated and exposed to an atmosphere of wet gas, the inner surface of the sheath becomes blackened (an oxide layer forms thereon) whereas the outer surface remains unaltered and substantially free from irregularities or roughness.
Abstract translation: 用于热电子枪阴极的阴极护套。 护套基本上是中空圆柱体的形式，并且具有外表面和内表面，中心轴线，封闭端和轴向相对的开口端，以及在封闭端和开口端之间延伸的侧壁。 鞘是具有形成内表面的第一材料层和覆盖基本上整个第一层并形成外表面的第二层电子发射（供体）材料的连续双金属层压体。 层压板在封闭端具有预选的厚度，并且在侧壁处具有沿中心轴线变化的厚度。 双金属层压体的外表面与氧基本上不反应，而内表面更容易与氧反应。 当阴极鞘被加热并暴露于湿气氛中时，护套的内表面变黑（在其上形成氧化物层），而外表面保持不变，基本上没有凹凸或粗糙。
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公开(公告)号：US5132081A
公开(公告)日：1992-07-21
申请号：US813671
申请日：1991-12-27
Applicant: Kyung S. Lee
Inventor： Kyung S. Lee
Abstract: A method for manufacturing an impregnated cathode comprising the steps of forming a porous pallet having a plurality of pores by sintering metal powder at a high temperature in a reducing atmosphere and fitting the porous pallet tightly in a cathode ring made of a metal containing an oxidizable material such as silicon, nickel or chromium. In the porous pallet, an electron radiating material is impregnated which is able to react with the oxidizable material of the cathode ring, so that an fixing between the pallet and the cathode ring is achieved by the reaction between the electron radiating material and the oxidizable material. In accordance with the method, the thickness of the cathode body can be greatly reduced, thereby enabling the performance of the impregnated cathode to be improved. Also, the manufacturing process can be simplified, thereby improving the productivity.
Abstract translation: 一种浸渍阴极的制造方法，其特征在于，包括以下步骤：通过在还原气氛中高温烧结金属粉末，形成具有多个孔的多孔托盘，并将所述多孔托盘紧紧地装配在由含有可氧化材料的金属制成的阴极环中 例如硅，镍或铬。 在多孔托盘中，浸渍能够与阴极环的可氧化材料反应的电子辐射材料，从而通过电子辐射材料和可氧化材料之间的反应来实现托盘和阴极环之间的固定 。 根据该方法，阴极体的厚度可以大大降低，从而能够提高浸渍阴极的性能。 此外，可以简化制造过程，从而提高生产率。
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公开(公告)号：US5113110A
公开(公告)日：1992-05-12
申请号：US633529
申请日：1990-12-31
Applicant: Dong-Gil Jang
Inventor： Dong-Gil Jang
Abstract: A dispenser cathode for an electron gun comprises a reservoir for holding thermoelectron emissive material. A sleeve having an outward flange at a top portion thereof and receives the reservoir at the upper portion thereof and receives a heating element at the other end. A heat shielding tube is provided with an inward flange at the top thereof that overlaps and is welded to the outward flange of the sleeve. A holder for supporting the heat shielding tube is secured thereto.
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公开(公告)号：US5030879A
公开(公告)日：1991-07-09
申请号：US503333
申请日：1990-03-30
Applicant: Petrus J. A. M. Derks
Inventor： Petrus J. A. M. Derks
Abstract: Cathode for an electric discharge tube having a short warm-up time and a long lifetime. The cathode comprises a metal (particularly nickel) support base coated with a layer of potentially electron-emissive material, which support base has a thickness ranging between 20 and 150 .mu.m, and metal crystallites having a size which does not permit of any further crystallite growth or recrystallization. Preferably, the crystallites of the support base have a size which corresponds to the thickness of the support base.
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Patent Agency Ranking
公开(公告)号：US5013965A
公开(公告)日：1991-05-07
申请号：US430645
申请日：1989-10-31
Applicant: Suk-bong Shon , Woo-young Na
Inventor： Suk-bong Shon , Woo-young Na
Abstract: An electron gun cathode and a manufacturing method therefor includes a unitary cylindrical sleeve having a bottom with through-holes for the passage of the terminals of a heater. The heater is disposed in a closed space formed by the sleeve and a base joined to the sleeve opposite its bottom. The heater is sealed in the closed space of the sleeve and base to promote thermal efficiency, reduce heat loss between the base and the sleeve, and reduce power consumption of the cathode.
Abstract translation: 一种电子枪阴极及其制造方法，包括具有底部的单体圆柱形套筒，底部具有用于加热器端子通过的通孔。 加热器设置在由套筒形成的封闭空间和与套筒相对的底部连接的基座上。 加热器密封在套筒和底座的封闭空间中，以提高热效率，减少基座与套筒之间的热损失，并降低阴极的功耗。
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公开(公告)号：US4904897A
公开(公告)日：1990-02-27
申请号：US677948
申请日：1984-12-04
Applicant: Johannes Van Esdonk , Jan Hasker , Jacobus Stoffels
Inventor： Johannes Van Esdonk , Jan Hasker , Jacobus Stoffels
CPC classification number: H01J1/26
Abstract: An oxide cathode comprising a base 1 which consists substantially of titanium and a heater element 5 coated with aluminium oxide 6 to heat the base 1, which bears a porous alkaline earth metal oxide emissive layer 4. When the surface of the titanium base 1 which is opposed to the heater element 5 bears a metal layer 7 consisting at least of one of the metals Pt, Mo, Ta and W, a solution is obtained to the problem occurring in titanium cathodes in that titanium in contact with aluminium oxide is not chemically stable. The metal layer preferably consisits of pure tungsten and is formed by chemical vapour desposition (CVD). The metal layer is preferably from 1 to 10 .mu.m thick.
Abstract translation: 一种氧化物阴极，其包括基本上由钛组成的基体1和涂覆有氧化铝6的加热元件5，以加热承载多孔碱土金属氧化物发射层4的基体1.当钛基1的表面 与加热器元件5相对的是具有至少由金属Pt，Mo，Ta和W中的至少一种构成的金属层7，获得了在钛阴极中发生的问题的解决方案是，与氧化铝接触的钛不是化学稳定的 。 金属层优选地是纯钨，并且通过化学气相沉积（CVD）形成。 金属层的厚度优选为1〜10μm。
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公开(公告)号：US4471260A
公开(公告)日：1984-09-11
申请号：US340553
申请日：1982-01-18
Applicant: Jan Hasker , Jacobus H. Jacobs , Peter Opmeer , Johannes A. T. Verhoeven
Inventor： Jan Hasker , Jacobus H. Jacobs , Peter Opmeer , Johannes A. T. Verhoeven
IPC: H01J1/26 , H01J1/14 , H01J1/15 , H01J1/20 , H01J1/22 , H01J1/24 , H01J29/04 , H01J19/06 , H01K1/04
Abstract: An oxide cathode comprising a metal base substantially consisting of titanium and a heating element for heating said base, on which base a porous layer comprising an alkaline earth metal oxide is provided. The cathode has a comparatively low operating temperature, a short warm up time and a low power requirement.
Abstract translation: 一种氧化物阴极，其包含基本由钛构成的金属基体和用于加热所述基底的加热元件，在该基底上设置包含碱土金属氧化物的多孔层。 阴极的工作温度较低，预热时间短，功率要求低。
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公开(公告)号：US4000435A
公开(公告)日：1976-12-28
申请号：US588926
申请日：1975-06-20
Applicant: Praveen K. Jariwala
Inventor： Praveen K. Jariwala
CPC classification number: H01J29/04
Abstract: An electron gun cathode for a cathode ray tube in which the cathode has a fast warm-up characteristic to produce a visible raster within about 6 seconds. The emissively-coated cathode cap is of reduced mass, with the cathode heater coil disposed within the cathode cap having a high weight to length ratio, and with a darkened coating thereon to increase the emissivity therefrom.
Abstract translation: 一种用于阴极射线管的电子枪阴极，其中阴极具有快速预热特性以在约6秒内产生可见光栅。 发射涂覆的阴极帽具有减小的质量，阴极加热器线圈设置在阴极盖内具有高的重量/长度比，并且其上具有变暗的涂层以增加其发射率。
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公开(公告)号：US3535757A
公开(公告)日：1970-10-27
申请号：US3535757D
申请日：1968-03-22
Applicant: RCA CORP
Inventor： NESTLEROTH PAUL L , SILVERS WILLIAM H
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