JPS61107676A - Making of electric contactor and contactor obtained thereby - Google Patents

Making of electric contactor and contactor obtained thereby

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Publication number
JPS61107676A
JPS61107676A JP60160023A JP16002385A JPS61107676A JP S61107676 A JPS61107676 A JP S61107676A JP 60160023 A JP60160023 A JP 60160023A JP 16002385 A JP16002385 A JP 16002385A JP S61107676 A JPS61107676 A JP S61107676A
Authority
JP
Japan
Prior art keywords
metal
alloy
carbon
alloys
carbon fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP60160023A
Other languages
Japanese (ja)
Inventor
ポール・レイユ
ドミニク・ベルジエ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mersen SA
Original Assignee
Carbone Lorraine SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Carbone Lorraine SA filed Critical Carbone Lorraine SA
Publication of JPS61107676A publication Critical patent/JPS61107676A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/027—Composite material containing carbon particles or fibres

Abstract

1. A process for the production of an electrical contact formed by a substrate of carbon fibres of small diameter which are aligned in a preferential direction and impregnated with a metal or metal alloy which is a good conductor of electric current, characterized in that the carbon fibres forming the substrate are between 2 and 50 mu m in diameter and that after impregnation under pressure with a metal or alloy which does not react with the carbon, the material produced in that way is subjected to a hot extrusion operation.

Description

【発明の詳細な説明】 本発明は金属又は金属合金と炭素繊維とから成る電気接
触子の製法及び該方法で得られる接触子に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an electrical contact made of a metal or metal alloy and carbon fibers, and a contact obtained by the method.

金属と炭素とをベースとする電気接触子を製造するため
に保護ガス又は還元性雰囲気又は５．１０−’トル未満
の高真空下で導電性の良い液体状金属特に銅及び／又は
銀に炭素繊維を浸漬させる方法はフランス特許出願公開
第２１１５８６５号より公知である。該液体状金属には
金属が炭素に浸透しゃすいように炭化物を形成し得る金
属を０．５〜５％添加しておく。In order to produce electrical contacts based on metals and carbon, liquid metals with good conductivity, especially copper and/or silver, under a protective gas or reducing atmosphere or under a high vacuum of less than 5.10-' Torr. A method for soaking fibers is known from French Patent Application No. 2,115,865. 0.5 to 5% of a metal capable of forming a carbide is added to the liquid metal so that the metal can easily penetrate into carbon.

該方法の主たる欠点は実施が難しいことである。The main drawback of the method is that it is difficult to implement.

特に全部の炭素が炭化物に変換されないように浸漬時間
を厳密に調整する必要がある。また選択された金属と炭
素線とのみから成る接触子を得ることができない。In particular, it is necessary to strictly adjust the soaking time so that all the carbon is not converted to carbide. Furthermore, it is not possible to obtain a contact made of only the selected metal and carbon wire.

更に、スイッチング動作のときに形成されるア一りによ
る摩耗を低減するために炭素線を１つの優先方向即ち一
般には接触面に垂直な方向に沿って配向することがしば
しば望ましい。Additionally, it is often desirable to orient the carbon wires along one preferred direction, generally perpendicular to the contact surfaces, to reduce wear due to flashes formed during switching operations.

上記の先行特許では前記のごとき配向を得るためには、
浸漬以前に適当な炭素質支持体を製造しなければならな
い。In the prior patent mentioned above, in order to obtain the above orientation,
Prior to dipping, a suitable carbonaceous support must be prepared.

また日本国特許出願公開第５７−５４２３６号により、
磁性金属又は合金で予め被覆した炭素繊維と金属粉末と
を混合し磁場の存在下で該混合物を圧縮して電気接触子
を製造する方法も知られている。Also, according to Japanese Patent Application Publication No. 57-54236,
It is also known to make electrical contacts by mixing carbon fibers precoated with a magnetic metal or alloy and metal powder and compressing the mixture in the presence of a magnetic field.

該方法の欠点の１つは、炭素繊維の被覆が必要なことで
ある。この処理は経費が高くしかも難しい処理であり接
触子に磁性物質が混入する。これら磁性物質の混入は接
触子の用途次第では好ましいものではない。One of the drawbacks of the method is the need for coating the carbon fibers. This process is expensive and difficult, and results in the contamination of the contacts with magnetic substances. Contamination of these magnetic substances is not preferable depending on the use of the contact.

別の欠点は、混合物を圧縮するために大型の高　　　　
価な装置が必要なことである。Another disadvantage is the large height required to compress the mixture.
This requires expensive equipment.

本発明の目的の１つは上記のごとき諸方法の欠点を是正
することである。One of the objects of the invention is to correct the drawbacks of the above-mentioned methods.

本発明の別の目的は、直径２〜５０ｆｉのオーダの細い
炭素繊維と金属又は金属合金とから成り、−炭素繊維が
極めて短＜（１５−〜１５０ｇのオーダ）、配向が良く
、分散が良い。Another object of the invention is that the carbon fibers are made of thin carbon fibers on the order of 2 to 50 fi in diameter and a metal or metal alloy, - the carbon fibers are very short < (on the order of 15 to 150 g), have good orientation and good dispersion. .

一炭素の密度が容易に調整されている 電気接触子を提供することである。The density of one carbon is easily adjusted The purpose is to provide electrical contacts.

上記目的は本発明方法によって達成される。本発明方法
は、金属又は金属合金と直径２〜５ｏｌｌＩｌの細い炭
素繊維とから成り炭素繊維が１つの優先方向に沿って配
列された電気接触子を製造するために２つの処理、即ち （ａ）細い炭素繊維支持体に溶融金属又は合金を圧力下
で含浸させる処理と （ｂ）前記で得られた材料を熱間押出する処理とを組合
わせたものである。。The above objects are achieved by the method of the invention. The method of the invention involves two processes to produce an electrical contact consisting of a metal or metal alloy and thin carbon fibers with a diameter of 2 to 5 ollIl, in which the carbon fibers are arranged along one preferential direction, namely (a) It is a combination of a process in which a thin carbon fiber support is impregnated with a molten metal or alloy under pressure and (b) a process in which the material obtained above is hot extruded. .

本発明方法の２つの処理自体は公知である。第１の処理
はフランス特許第１３６８１２９号に記載されており第
２の処理は例えば冶金において常用である。The two treatments of the method of the invention are known per se. The first treatment is described in French Patent No. 1 368 129 and the second treatment is customary, for example in metallurgy.

、然しなから、本出願の目的たる２つの処理の組合わせ
は今日まで知られていない。, however, the combination of the two treatments, which is the object of the present application, is not known to date.

本出願の方法によって 一添加物を全く必要としない含浸モードが選択されるの
で製品が出発構成元素以外の元素を含有せず且つ繊維の
配向が押出によって得られる。By the method of the present application an impregnation mode is selected which does not require any additives, so that the product contains no elements other than the starting constituents and the orientation of the fibers is obtained by extrusion.

−繊維が単一方向に沿ってほぼ配向されており十分に分
散している。- the fibers are substantially oriented along a single direction and are well dispersed;

本発明方法では更に３０〜５０＋ａｍのオーダの比較的
長い炭素繊維を出発物質として使用し得る。In addition, relatively long carbon fibers on the order of 30-50+ am may be used as starting material in the process of the invention.

炭素繊維は押出中に１５〜５００μｍのオーダの断片に
分割される。The carbon fibers are divided into pieces on the order of 15-500 μm during extrusion.

金属又は金属合金は電気伝導性が良く金属の溶融温度で
炭素と反応しないものから選択される。The metal or metal alloy is selected from those that have good electrical conductivity and do not react with carbon at the melting temperature of the metal.

例えば銅とその合金、銀とその合金及びカドミウムから
選択される。For example, it is selected from copper and its alloys, silver and its alloys, and cadmium.

金属又は金属合金の選択には経済性及び／又は金属資源
の量を配慮する。従って銀よりも安価で豊富に存在しし
かも接触性能の良い銅及びその合金が適当である。Economic efficiency and/or amount of metal resources are taken into consideration when selecting a metal or metal alloy. Therefore, copper and its alloys, which are cheaper and more abundant than silver and have better contact performance, are suitable.

炭素繊維支持体はバルク材料から構成されてもよいが好
ましくはフェルトから構成される。The carbon fiber support may be constructed from bulk material, but is preferably constructed from felt.

もち論、炭素繊維なる用語は黒鉛をも包含する。Of course, the term carbon fiber also includes graphite.

繊維支持体の密度を調°整して最終製品での所望の炭素
比率を得る。この密度を０．０５〜１まで変化させるこ
とができ従って金属又は合金の比率が９７゜５〜４５容
量％まで変化する。Adjust the density of the fiber support to obtain the desired carbon proportion in the final product. This density can be varied from 0.05 to 1 and thus the proportion of metal or alloy can be varied from 97.5 to 45% by volume.

非限定実施例に基づいて本発明を以下に説明する。The invention will be explained below on the basis of non-limiting examples.

実施例１ 直径ｌ０１ＩＲ及び長さ５０ｍｍの炭化ビスコース繊維
８０ぴを圧縮して直径８ｈｍ及び厚さ８０ｍ＋ｎのフェ
ルトを１　　　　　形成した。圧力５バール及び温度１
１００℃でフェルトに溶融鋼を含浸させた。Example 1 80 pieces of carbonized viscose fibers each having a diameter of 101 IR and a length of 50 mm were compressed to form one felt having a diameter of 8 hm and a thickness of 80 m+n. Pressure 5 bar and temperature 1
The felt was impregnated with molten steel at 100°C.

得られたビレットは８７容量％の銅を含有しており炭素
繊維は元の長さく約５０−一）を維持しており含浸後の
配向はランダムであった。The resulting billet contained 87% copper by volume, the carbon fibers maintained their original length of about 50 mm, and were randomly oriented after impregnation.

このビレットを直径１２＋ｓｍの円形断面グイから８５
０℃で熱間押出した。This billet is made from a circular cross section gui with a diameter of 12+sm.
Hot extrusion was performed at 0°C.

これにより直径１２ｉｕ＊及び長さ３ｇ＋の丸棒材が得
られた。この棒材では、 一炭素繊維が押出によって長さ１５〜１５０ＩＥＩｔの
断片に分割されており、 一全部の断片が押出軸に沿って配向されている。As a result, a round bar material with a diameter of 12 iu* and a length of 3 g+ was obtained. In this bar, one carbon fiber is divided by extrusion into pieces with a length of 15 to 150 IEIt, and all the pieces are oriented along the extrusion axis.

第１図及び第２図は夫々、棒材の軸に平行な断面及び軸
に垂直な断面の１３０倍の顕微鏡写真である。FIGS. 1 and 2 are micrographs of a cross section parallel to the axis of the bar and a cross section perpendicular to the axis at a magnification of 130 times, respectively.

図中の黒い部分が繊維を示す。The black parts in the figure indicate fibers.

（１）全部の繊維が単一方向即ち押出軸に沿った方向に
配向されている。第１図では黒い部分が十分に平行な短
い細線であり細線の長さが繊維の長さである。第２図で
は黒い部分が点であり点の直径が繊維の直径である。(1) All fibers are oriented in a single direction, ie, along the extrusion axis. In FIG. 1, the black parts are sufficiently parallel short thin lines, and the length of the thin lines is the length of the fiber. In Figure 2, the black parts are dots, and the diameter of the dots is the diameter of the fiber.

（２）繊維は十分に分散している。即ち第１図での細線
のアマルガム及び第２図での点のアマルガムはいずれも
存在しない。(2) The fibers are well dispersed. That is, neither the thin line amalgam in FIG. 1 nor the dot amalgam in FIG. 2 exist.

棒材を押出軸に垂直に輪切りして厚さＩＩＩＩＩｌｌの
円板を得る。The bar is cut into rings perpendicular to the extrusion axis to obtain disks having a thickness of IIIllll.

得られた円板を開閉接触子として使用する。コストの割
に性能が良いので銀−酸化カドミウム接触子の代わりに
有利に使用し得ることが確認された。但し、耐用寿命は
短い。The obtained disc is used as an opening/closing contact. It has been confirmed that it can be advantageously used in place of the silver-cadmium oxide contact because of its good performance relative to cost. However, the service life is short.

実施例２ この実施例は実施例１の変形である。Example 2 This embodiment is a modification of the first embodiment.

銅に代えて以下の重量％の銅とクロムとジルコニウムと
の合金を使用する。Instead of copper, an alloy of copper, chromium and zirconium is used in the following weight percentages:

銅９８．５％、クロム１％、ジルコニウム０．５％実施
例１と同じ繊維支持体を使用する。The same fiber support as in Example 1 is used: 98.5% copper, 1% chromium, 0.5% zirconium.

圧力５バ一ル温度１０５０℃でフェルトに溶融合金Ｃｕ
−Ｃｒ−Ｚｒを含浸させる。Melted alloy Cu on felt at pressure 5 bar temperature 1050℃
- Impregnating with Cr-Zr.

得られたビレットはこの合金Ｃｕ−Ｃｒ−Ｚｒを８４．
５容量％含有している。The obtained billet contained this alloy Cu-Cr-Zr at 84%.
It contains 5% by volume.

１２Ｘ　１２ｍｏ＋の方形断面ダイを用い８２０℃でビ
レットを熱間押出する。Hot extrude the billet at 820°C using a 12X 12mo+ square cross-section die.

断面１２Ｘ　１２ｍｍ長さ２．８ｍの角材が得られる。A square timber with a cross section of 12 x 12 mm and a length of 2.8 m is obtained.

これを厚さ１ＩＩ１１に薄切りして開閉接触子として使
用する。This is sliced to a thickness of 1II11 and used as an opening/closing contact.

実施例１と全く等しい結集が得られるー。A concentration exactly the same as in Example 1 is obtained.

実施例３ この実施例は実施例２の変形である。Example 3 This embodiment is a modification of the second embodiment.

焼入れ一焼戻しすると合金Ｃｕ−Ｃｒ−Ｚｒの機械的特
性が顕著に向上する。After quenching and tempering, the mechanical properties of the Cu-Cr-Zr alloy are significantly improved.

従って押出後に得られた棒材を１０００℃に加熱し水に
焼入れして４７５℃で焼鈍する。Therefore, the bar obtained after extrusion is heated to 1000°C, quenched in water and annealed at 475°C.

この棒材を薄切りして得られた接触子の耐用寿命は実施
例２の接触子より顕著に延長している。The service life of the contact obtained by slicing this bar material is significantly longer than that of the contact of Example 2.

実施例４ この実施例は実施例１の変形である。銅に代えて銀を用
いる。Example 4 This example is a modification of Example 1. Use silver instead of copper.

実施例１と同じ繊維支持体を使用する。The same fiber support as in Example 1 is used.

圧力５バ一ル温度１０００’ｃでフェルトに溶融銀を含
浸させる。The felt is impregnated with molten silver at a pressure of 5 bars and a temperature of 1000'C.

得られたビレットは８３容量％の銀を含有している。The resulting billet contains 83% silver by volume.

このビレットを同じダイで７８０　℃で熱間押出する。This billet is hot extruded in the same die at 780°C.

これにより直径１２ｍｍ長さ３ｍの丸棒材が得られる。As a result, a round bar material with a diameter of 12 mm and a length of 3 m is obtained.

これを厚さ１ｍｍの円板に輪切りして接触子として使用
する。This is cut into disks with a thickness of 1 mm and used as contacts.

本発明の接触子は従来の銀−炭素接触子よりも性能が顕
著に向上していることが確認された。It has been confirmed that the contact of the present invention has significantly improved performance over conventional silver-carbon contacts.

上記実施例は金属又は合金の幾つかの使用例に過ぎない
。本発明の範囲内で別の金属又は合金の使用が可能なこ
とは明らかである。含浸条件と押出条件とを各材料の物
性に適応させるだけでよい。The above embodiments are just some examples of the use of metals or alloys. It is clear that other metals or alloys can be used within the scope of the invention. It is only necessary to adapt the impregnation and extrusion conditions to the physical properties of each material.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の棒材の軸方向断面の顕微鏡写真、第２
図は本発明の棒材の軸に垂直な断面の顕代理人　弁理士
月ｌ　　口　　戎　　姫特許庁長官　宇　買　道　部　
殿 １．事件の表丞　　　昭和６０年特許願第１６００２３
号２、発明の名称　　　電気接触子の製法及び該方法で
得られる接触子 ３、補正をする者 事件との間係　　特許出願人 名　称　　　　ル・カルボンヌ・ロレーヌ４、代　理　
人　　　東京都所宿区新宿１丁目１番１４号　山田ビル
５、補正指令の日付　昭和６０年１０月９日６、補正に
より増加する発明の数 ８、補正の内容 本願明細書中、４、図面の簡単な説明の欄に［第１図は
本発明の棒材の軸方向断面の顕微鏡写真、第２図は本発
明の棒材の軸に垂直な断面の顕微鏡写真である。Ｊとあ
るを、 「第１図は、金属組織を含浸させた繊維の形状である本
発明の棒材の軸方向断面の顕微鏡写真、第２図は同じく
金属組織を含浸させた繊維の形状である本発明の棒材の
軸に垂直な断面の顕微鏡写真である。」に補正する。Figure 1 is a micrograph of the axial cross section of the bar of the present invention, Figure 2 is
The figure shows a cross section perpendicular to the axis of the bar of the present invention.
Hall 1. Case Summary: 1985 Patent Application No. 160023
No. 2, Title of the invention: Process for manufacturing electrical contacts and contacts obtained by the method 3, Interaction with the case of the person making the amendment Name of patent applicant: Le Carbonne Lorraine 4, Agent
Person: Yamada Building 5, 1-1-14 Shinjuku, Shorjuku-ku, Tokyo Date of amendment order October 9, 1985 6. Number of inventions increased by amendment 8. Contents of amendment In the specification of the present application 4. Drawings [FIG. 1 is a micrograph of an axial cross section of the bar of the present invention, and FIG. 2 is a micrograph of a cross section perpendicular to the axis of the bar of the present invention. ``Figure 1 is a micrograph of an axial cross section of the bar of the present invention, which is in the form of a fiber impregnated with a metallographic structure, and Figure 2 is a photomicrograph of a fiber in the same shape impregnated with a metallographic structure. This is a micrograph of a cross section perpendicular to the axis of a bar of the present invention.''

Claims (7)

【特許請求の範囲】[Claims] （１）金属又は金属合金と直径２〜５０μｍのオーダの
細い炭素繊維とから成り炭素繊維が１つの優先方向に沿
って配列された電気接触子を製造するために２つの連続
処理として、 （ａ）細い炭素繊維支持体に溶融金属又は合金を圧力下
で含浸させる処理と （ｂ）前記で得られた材料を熱間押出する処理とを含む
ことを特徴とする電気接触子の製法。(1) In order to produce an electrical contact consisting of a metal or metal alloy and thin carbon fibers on the order of 2 to 50 μm in diameter, in which the carbon fibers are arranged along one preferential direction, two successive processes (a 1. A method for producing an electrical contact, comprising: a) impregnating a thin carbon fiber support with a molten metal or alloy under pressure; and b) hot extruding the material obtained. （２）金属又は金属合金が、銅とその合金、銀とその合
金及びカドミウムから選択されることを特徴とする特許
請求の範囲第１項に記載の方法。(2) A method according to claim 1, characterized in that the metal or metal alloy is selected from copper and its alloys, silver and its alloys and cadmium. （３）炭素繊維支持体がバルク繊維またはフェルトから
なることを特徴とする特許請求の範囲第１項又は第２項
に記載の方法。(3) The method according to claim 1 or 2, wherein the carbon fiber support is made of bulk fiber or felt. （４）支持体の炭素繊維の初期長さが数ｍｍ〜数１０ｍ
ｍであり押出によって長さ１５〜５００μｍの断片に分
割されることを特徴とする特許請求の範囲第１項から第
３項のいずれかに記載の方法。(4) The initial length of the carbon fiber of the support is several mm to several tens of meters.
4. A method according to any one of claims 1 to 3, characterized in that the material is divided into pieces having a length of 15 to 500 μm by extrusion. （５）特許請求の範囲第１項から第４項のいずれかに記
載の方法で得られることを特徴とする電気接触子。(5) An electric contact obtained by the method according to any one of claims 1 to 4. （６）金属又は金属合金と太さ２〜５０μｍのオーダで
長さ１５〜１５０μｍの炭素繊維とのみから構成された
複合材料から成ること、及び、材料中の炭素繊維が単一
方向に沿って十分に配向されており且つ十分に分散して
いることを特徴とする特許請求の範囲第５項に記載の電
気接触子。(6) It is made of a composite material consisting only of a metal or metal alloy and carbon fibers with a thickness on the order of 2-50 μm and a length of 15-150 μm, and the carbon fibers in the material are arranged in a single direction. 6. An electrical contact according to claim 5, characterized in that it is well oriented and well distributed. （７）金属又は金属合金が、銅とその合金、銀とその合
金及びカドミウムから選択されていることを特徴とする
特許請求の範囲第６項に記載の電気接触子。(7) The electric contact according to claim 6, wherein the metal or metal alloy is selected from copper and its alloys, silver and its alloys, and cadmium.
JP60160023A 1984-07-25 1985-07-19 Making of electric contactor and contactor obtained thereby Pending JPS61107676A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8412036 1984-07-25
FR8412036A FR2568417B1 (en) 1984-07-25 1984-07-25 METHOD FOR MANUFACTURING ELECTRICAL CONTACTS AND CONTACTS OBTAINED.

Publications (1)

Publication Number Publication Date
JPS61107676A true JPS61107676A (en) 1986-05-26

Family

ID=9306600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60160023A Pending JPS61107676A (en) 1984-07-25 1985-07-19 Making of electric contactor and contactor obtained thereby

Country Status (5)

Country Link
EP (1) EP0171339B1 (en)
JP (1) JPS61107676A (en)
AT (1) ATE38738T1 (en)
DE (1) DE3566323D1 (en)
FR (1) FR2568417B1 (en)

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Publication number Priority date Publication date Assignee Title
JPS6354582U (en) * 1986-09-30 1988-04-12
JP2010257793A (en) * 2009-04-24 2010-11-11 Panasonic Electric Works Co Ltd Electric connection terminal device for signal and method of manufacturing the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615046B1 (en) * 1987-05-04 1992-12-31 Merlin Gerin SINTERED COMPOSITE MATERIAL FOR ELECTRICAL CONTACT AND CONTACT PAD USING SAID MATERIAL
DE3806573A1 (en) * 1988-03-01 1989-09-14 Siemens Ag Pair of contacts
FR2731106A1 (en) * 1995-02-27 1996-08-30 Schneider Electric Sa METHOD FOR MANUFACTURING COMPOSITE ELECTRIC CONTACT MATERIAL
EP2179976A1 (en) 2003-05-16 2010-04-28 Hitachi Metals, Ltd. Composite material having high thermal conductivity and low thermal expansion coefficient
FR2877763B1 (en) 2004-11-08 2007-03-16 Schneider Electric Ind Sas CONTACT BAG FOR A MOBILE ELECTRIC CONTACT OF A CIRCUIT BREAKER, MOBILE ELECTRICAL CONTACT HAVING SUCH A PASTILLE AND CIRCUIT BREAKER COMPRISING SUCH A CONTACT
US7851055B2 (en) * 2005-03-29 2010-12-14 Hitachi Metals, Ltd. High-thermal-conductivity graphite-particles-dispersed-composite and its production method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127432A (en) * 1976-04-19 1977-10-26 Tanaka Precious Metal Ind Method of making silver based composite electric contact materials

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Publication number Priority date Publication date Assignee Title
US3254189A (en) * 1961-05-15 1966-05-31 Westinghouse Electric Corp Electrical contact members having a plurality of refractory metal fibers embedded therein
DE2057618A1 (en) * 1970-11-24 1972-06-15 Duerrwaechter E Dr Doduco Metal-carbon composite and process for its manufacture
DE2250810B2 (en) * 1972-10-17 1976-04-08 Fa. G. Rau, 7530 Pforzheim CONTACT PIECE, IN PARTICULAR CONTACT RIVET, AND MANUFACTURING PROCESS FOR IT
US4127700A (en) * 1973-10-12 1978-11-28 G. Rau Metallic material with additives embedded therein and method for producing the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127432A (en) * 1976-04-19 1977-10-26 Tanaka Precious Metal Ind Method of making silver based composite electric contact materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6354582U (en) * 1986-09-30 1988-04-12
JP2010257793A (en) * 2009-04-24 2010-11-11 Panasonic Electric Works Co Ltd Electric connection terminal device for signal and method of manufacturing the same

Also Published As

Publication number Publication date
FR2568417A1 (en) 1986-01-31
ATE38738T1 (en) 1988-12-15
FR2568417B1 (en) 1986-11-28
DE3566323D1 (en) 1988-12-22
EP0171339B1 (en) 1988-11-17
EP0171339A1 (en) 1986-02-12

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