公开(公告)号：US4975674A

公开(公告)日：1990-12-04

申请号：US298746

申请日：1989-01-12

Applicant: Mikio Sumiyoshi ,  Homeru Igarashi ,  Taizou Hashizume

Inventor： Mikio Sumiyoshi ,  Homeru Igarashi ,  Taizou Hashizume

IPC: H01C1/144 ,  H01C7/102

CPC classification number: H01C1/144 ,  H01C7/102

Abstract: In contrast to a conventional surge absorber in which external terminals (4a), (4b) are led from disshaped electrode plates (3a), (3b) soldered to the surfaces of electrodes (2) on a varistor element (1), a surge absorber of the present invention has a varistor element (5), electrodes (6) provided on both sides of the varistor element (5) and electrode plates (7a), (7b) soldered to the surfaces of the electrodes (6), each electrode plates (7a), (7b) having at least one of substantially radial slots and an external terminal (8a), (8b) extended substantially from the center thereof. The surge absorber according to the present invention enables the electrode plates (7a), (7b) to be held in uniform contact with the electrodes (6) during soldering by virtue of the fact that the external terminals (8a), (8b) are led from the central regions thereof, so that the soldering can be conducted effected stably. In addition, since the external terminals (8a), (8b) and led from the central regions of the electrode plates, the electric current in the varistor element is uniformalized to provide a greater surge proof current capacity.

公开(公告)号：US4933659A

公开(公告)日：1990-06-12

申请号：US362282

申请日：1989-06-06

Applicant: Osamu Imai ,  Koichi Umemoto

Inventor： Osamu Imai ,  Koichi Umemoto

IPC: C04B35/453 ,  H01C7/10 ,  H01C7/102 ,  H01C7/112

CPC classification number: H01C7/102 ,  H01C7/112 ,  Y10T29/49099

Abstract: A voltage non-linear resistor having lightning discharge current withstanding capability, switching surge current withstanding capability, and voltage non-linear index .alpha., including a resistor element body consisting essentially of zinc oxide, and a side highly resistive layer composed of a zinc silicate phase consisting essentially of Zn.sub.2 SiO.sub.4 and a spinel phase consisting essentially of Zn.sub.7 Sb.sub.2 O.sub.12 arranged on a side surface of the resistor element body, can be attained, having a porosity of the resistor element body of 2% or less, zinc silicate particles existing continuously in the side highly resistive layer, and a porosity of 10% or less in a region of the side highly resistive layer within 30 .mu.m or less from the resistor element body. A method of producing the voltage non-linear resistor is also provided.

公开(公告)号：US4692735A

公开(公告)日：1987-09-08

申请号：US725584

申请日：1985-04-22

Applicant: Moritaka Shoji ,  Takeo Yamazaki ,  Satoru Ogihara

Inventor： Moritaka Shoji ,  Takeo Yamazaki ,  Satoru Ogihara

IPC: H01C7/10 ,  H01C7/102 ,  H01C7/112

CPC classification number: H01C7/102 ,  H01C7/112 ,  Y10T29/49082

Abstract: A paste composed of Li.sub.2 CO.sub.3, SiO.sub.2, Sb.sub.2 O.sub.3 and Bi.sub.2 O.sub.3 is coated and baked on a side surface of a sintered ZnO based nonlinear voltage dependent resistor body to form a high resistance side surface for improving a impulse current withstand of the resistor.The amount of the paste constituent is 1.about.2.5 mol % for Li.sub.2 CO.sub.3, 72.+-.5 mol % for SiO.sub.2, 20.+-.3 mol % for Sb.sub.2 O.sub.3 and 8.+-.2 mol % for Bi.sub.2 O.sub.3.

Abstract translation: 将由Li 2 CO 3，SiO 2，Sb 2 O 3和Bi 2 O 3组成的糊剂在ZnO基非线性电压相关电阻体的侧面上进行涂布烧结，形成用于提高电阻器的脉冲电流耐受性的高电阻侧面。 糊剂成分的量对于Li 2 CO 3为1摩尔％，SiO 2为72 +/- 5摩尔％，Sb 2 O 3为20 +/- 3摩尔％，Bi 2 O 3为8 +/- 2摩尔％。

公开(公告)号：US4448806A

公开(公告)日：1984-05-15

申请号：US490611

申请日：1983-05-02

Applicant: Lionel M. Levinson

Inventor： Lionel M. Levinson

IPC: H01C1/144 ,  H01C7/102 ,  B05D5/12 ,  H01C7/12

CPC classification number: H01C1/144 ,  H01C7/102

Abstract: Solderable, largely base metal electrodes for metal oxide varistors are fabricated by screen printing an electrically conductive, air-fireable base metal composition on a varistor material substrate. A distributed fine noble metal array is screen printed over the screened base metal and the varistor heated in air at a temperature of between approximately 500.degree. C. and 800.degree. C. The varistor leads are easily solderable to the noble metal array.

Abstract translation: 用于金属氧化物变阻器的可焊接的大部分基底金属电极通过在非线性电阻材料衬底上丝网印刷导电的，可空气燃烧的贱金属组合物来制造。 分布的细贵金属阵列丝网印刷在屏蔽的母材和压敏电阻之间，其温度在约500℃至800℃之间的空气中加热。变阻器引线易于焊接到贵金属阵列上。

公开(公告)号：US4409728A

公开(公告)日：1983-10-18

申请号：US274030

申请日：1981-06-15

Applicant: Howard F. Ellis ,  James S. Kresge

Inventor： Howard F. Ellis ,  James S. Kresge

IPC: H01C7/102 ,  H01C17/02

CPC classification number: H01C7/102 ,  Y10T29/49087 ,  Y10T29/49101

Abstract: A high voltage varistor for DC operation is manufactured by applying a glass collar to the perimeter of a sintered zinc oxide disc and heat treated between about 750.degree. C. and 400.degree. C. for several cycles in air. After heat treating, an organic resin or ceramic coating is applied to the glass collar to further insulate the varistor for high voltage application.

Abstract translation: 通过将玻璃套环施加到烧结氧化锌圆盘的周边并在大约750℃至400℃之间热处理以在空气中进行几个循环来制造用于直流操作的高压压敏电阻。 在热处理之后，将有机树脂或陶瓷涂层施加到玻璃套环上以进一步绝缘压敏电阻以用于高电压施加。

公开(公告)号：US4317101A

公开(公告)日：1982-02-23

申请号：US201182

申请日：1980-10-27

Applicant: Howard F. Ellis ,  James S. Kresge

Inventor： Howard F. Ellis ,  James S. Kresge

IPC: H01C7/10 ,  H01C7/102

CPC classification number: H01C7/102 ,  Y10T29/49101

Abstract: A high voltage varistor for DC operation is manufactured by applying a glass collar to the perimeter of a sintered zinc oxide disc and heat treated between about 750.degree. C. and 400.degree. C. for several cycles in air. After heat treating, an organic resin or ceramic coating is applied to the glass collar to further insulate the varistor for high voltage application.

Abstract translation: 通过将玻璃套环施加到烧结氧化锌圆盘的周边并在大约750℃至400℃之间热处理以在空气中进行几个循环来制造用于直流操作的高压压敏电阻。 在热处理之后，将有机树脂或陶瓷涂层施加到玻璃套环上以进一步绝缘压敏电阻以用于高电压施加。

公开(公告)号：US4157527A

公开(公告)日：1979-06-05

申请号：US843793

申请日：1977-10-20

Applicant: Herbert R. Philipp

Inventor： Herbert R. Philipp

IPC: H01C7/102 ,  H01C7/10

CPC classification number: H01C7/102

Abstract: A metal oxide varistor structure having a reduced voltage overshoot is disclosed. In accordance with one embodiment of the invention, the varistor disk, for example, is provided with a relatively small region of reduced thickness, the amount of said thickness reduction being dependent upon the original thickness of the varistor substrate. The area of region of reduced thickness is selected to control conduction duration in the region of reduced thickness.

Abstract translation: 公开了一种具有降低的电压过冲的金属氧化物变阻器结构。 根据本发明的一个实施例，例如，压敏电阻盘设置有相对较小的厚度减小的区域，所述厚度减小量取决于压敏电阻衬底的原始厚度。 选择厚度减小的区域来控制厚度减小的区域中的导电持续时间。

公开(公告)号：US4100588A

公开(公告)日：1978-07-11

申请号：US778007

申请日：1977-03-16

Applicant: James S. Kresge

Inventor： James S. Kresge

IPC: H01C7/102 ,  H01C7/12 ,  H01T1/15 ,  H01T1/16 ,  H02H3/22

CPC classification number: H01C7/102 ,  H01C7/12

Abstract: The arrester comprises an insulating housing with end terminals and a plurality of varistors inside the housing electrically connected between the terminals. The varistors are provided individually or in groups with a heat transfer and sinking collar which is electrically insulating and thermally conducting. The collar may be in thermally conducting contact with the inside wall of the housing to improve heat dissipation to the housing. The configuration of the collar is such that when it is installed in the housing, there is a passageway through it to provide a longitudinal space in the arrester for accommodating arcing and for the venting of gas in the event of an arrester failure.

Abstract translation: 避雷器包括具有端子端子的绝缘壳体和壳体内的多个可变电阻器，其电连接在端子之间。 压敏电阻单独地或分组地设置有传导和下沉的环，其电绝缘和导热。 套环可以与壳体的内壁热导电接触以改善对壳体的散热。 轴环的构造使得当其安装在壳体中时，存在通过其的通道，以在避雷器中提供纵向空间，用于容纳电弧并且在避雷器故障的情况下排出气体。

公开(公告)号：US4092694A

公开(公告)日：1978-05-30

申请号：US778006

申请日：1977-03-16

Applicant: Earl W. Stetson

Inventor： Earl W. Stetson

IPC: H01C7/102 ,  H01C7/12 ,  H02H9/06

CPC classification number: H01C7/12 ,  H01C7/102

Abstract: Flat internal components of an arrester are stacked longitudinally inside the insulating housing cylinder with a perimeter portion contacting the inside wall of the housing. Each component has a guide channel extending longitudinally on its perimeter portion opposite the portion in contact with the wall. A resilient rolling bias member is disposed in the channel of each component in a deformed stressed state and forces the components laterally against the wall.

公开(公告)号：US3872582A

公开(公告)日：1975-03-25

申请号：US42873773

申请日：1973-12-27

Applicant: MATSUSHITA ELECTRIC IND CO LTD

Inventor： MATSUOKA MICHIO ,  ITAKURA GEN ,  IGA ATSUSHI ,  MASUYAMA TAKESHI

IPC: H01B1/08 ,  H01C7/102 ,  H01C17/02 ,  H01C1/14 ,  H01C17/00

CPC classification number: H01C7/102 ,  H01B1/08 ,  H01C17/02 ,  Y10T29/49082 ,  Y10T29/49101

Abstract: A process for making a voltage dependent resistor which has a zinc oxide sintered body which itself has voltage dependent properties. The process is made up of the steps of: (1) providing a formed body of a powder mixture having as a major part zinc oxide and additive; (2) coating on the side surfaces of the formed body a paste having as the solid ingredient composition at least one member selected from the group of a) more than 50 mole % of silicon dioxide (SiO2), and less than 50 mole % of bismuth oxide (Bi2O3), b) the same composition as that of said additive, c) more than 30 mole percent of antimony oxide (Sb2O3) and less than 70 mole percent of bismuth oxide (Bi2O3), and d) more than 50 mole percent of indium oxide (In2O3) and less than 50 mole percent of bismuth oxide (Bi2O3); (3) sintering the coated body; and (4) applying electrodes to opposite surfaces of the sintered body.

Abstract translation: 制造具有本身具有电压依赖性的氧化锌烧结体的电压依赖电阻器的方法。 该方法由以下步骤组成：（1）提供具有主要部分氧化锌和添加剂的粉末混合物的成形体; （2）在成形体的侧面上涂覆具有固体成分组合物的糊剂，所述糊剂选自a）超过50摩尔％的二氧化硅（SiO 2）和小于50摩尔％的二氧化硅（SiO 2）中的至少一种， 氧化铋（Bi 2 O 3），b）与所述添加剂相同的组成，c）大于30摩尔％的氧化锑（Sb 2 O 3）和小于70摩尔％的氧化铋（Bi 2 O 3），和d）大于50摩尔 氧化铟（In 2 O 3）的百分比和小于50摩尔％的氧化铋（Bi 2 O 3）; （3）烧结涂层体; 和（4）将电极施加到烧结体的相对表面。