JPS6352138B2 - - Google Patents
Info
- Publication number
- JPS6352138B2 JPS6352138B2 JP60163326A JP16332685A JPS6352138B2 JP S6352138 B2 JPS6352138 B2 JP S6352138B2 JP 60163326 A JP60163326 A JP 60163326A JP 16332685 A JP16332685 A JP 16332685A JP S6352138 B2 JPS6352138 B2 JP S6352138B2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- hardness
- carbide layer
- spinning
- traveler
- 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.)
- Expired
Links
- 238000009987 spinning Methods 0.000 claims description 23
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 7
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- -1 case-hardened steel Chemical compound 0.000 claims 1
- 208000012886 Vertigo Diseases 0.000 description 22
- 238000009792 diffusion process Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 206010040844 Skin exfoliation Diseases 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000012209 synthetic fiber Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/02—Spinning or twisting arrangements for imparting permanent twist
- D01H7/52—Ring-and-traveller arrangements
- D01H7/60—Rings or travellers; Manufacture thereof not otherwise provided for ; Cleaning means for rings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
〔産業上の利用分野〕
本発明は、紡績用リング、特にスピンドルの高
速回転に適する紡績用リングに関する。
〔従来の技術〕
従来、紡績用リングは高硬度と耐摩耗性を付与
するため種々の手段が試みられている。一般的に
は、肌焼鋼を用い旋削形成し、滲炭処理後焼入焼
戻しにより所定硬度を得る方法が採られている。
あるいはリング表面を窒化する方法も採られてい
る。その他の処理としてはトラベラ接触面に20〜
50μの厚さに金属炭化物の拡散層を形成する方法
も試みられている（例えば実公昭59−31715号）。
しかし、いずれの方法によつてもスピンドルの
回転数は15000ないし18000rpmが限度である。そ
れ以上にスピンドル回転数を増すときはリングは
早期に摩耗し、かつ糸切れが多く実用に適さな
い。
〔発明が解決しようとする問題点〕
これは単にリング表面の硬度を高くするのみで
は充分ではない。実験結果によると、高硬度層を
必要以上に厚くするときは、却つて剥離等の問題
がある。その他リング芯部と表面硬化層との硬度
差が大きいときは高硬度層の陥没等の問題もあ
る。
また、合成繊維例えばアクリル系合成繊維に
は、塩化物を含むものがある。この場合、トラベ
ラとの接触により発熱して塩素ガスを発生してリ
ングを腐蝕する等の問題がある。
本発明はこれらの点に鑑み、スピンドルの高速
回転に適するとともに、耐蝕性に優れた紡績用リ
ングを提供することを目的とする。
〔問題点を解決するための手段〕
上記目的を達成するための本発明を実施例に対
応する図面を用いて説明する。本発明の紡績用リ
ング１は、素材として炭素鋼を用い、所定のリン
グ形状に形成する。炭素鋼は少なくとも0.4％以
上の炭素を含有するものを用いる。または肌焼鋼
を用い成型後、予め滲炭処理を行う。このリング
素材をバナジウム粉末を含む塩浴中で所定時間加
熱して上記素材表面に深さ５〜15μで硬度
2000HV以上のバナジウム炭化物層を形成する。
次いで、表面炭化物の密着強度を向上するため
焼入焼戻し処理を行う。これにより上記炭化物層
に接する内部の滲炭部硬度を800〜900Hvとする。
次いで、トラベラ接触面を研摩加工し、表面粗さ
を1.5μ以下とする。
〔作用〕
予め滲炭処理を行つてリング素材表面の炭素濃
度を高めてからバナジウム粉末を含む塩浴中で加
熱して拡散滲透処理を行うので、リング素材の炭
素とバナジウムとが化学反応を起こして生成され
るバナジウム炭化物層は超硬度のものとなる。し
かも、拡散滲透処理には塩浴を使用するので、均
一な厚さのバナジウム炭化物層を形成することが
できる。また、バナジウム炭化物層の厚さは５〜
15μとしているので、該炭化物層の剥離のおそれ
がない。また、炭化物層形成後に、焼入、焼戻し
処理して滲炭部硬度を800〜900Hvとするので、
表面から内部に渡つて炭化物層〜滲炭層〜素地の
３層からなる段階的な硬度差をもつ組織が得られ
るために、バナジウム炭化物層の陥没のおそれも
ない。さらに、バナジウム炭化物層の表面硬度を
2000Hv以上とし、かつ、研磨仕上げにより表面
粗さを1.5μ以下としたので、トラベラとの摩擦抵
抗指数を大幅に減少させることができる。
〔実施例〕
第１図は本発明の紡績用リングの製造要領を示
す工程図である。素材として例えば肌焼鋼を用
い、所定形状に旋削形成する。次いで滲炭処理を
行う。これら旋削及び滲炭処理は周知要領と同じ
である。ただし、肌焼鋼に代えて工具鋼等を使用
してもよい。この場合には後述する処理に適合さ
せるため炭素0.4％以上含有の炭素鋼を用いる。
次いで、上記リング素材をバナジウム粉末を含
む塩浴中で約900℃前後に加熱し、表面にバナジ
ウムを拡散浸透させてバナジウム炭化物層を形成
する。この場合、素材は、予め滲炭処理を行つて
リング素材表面の炭素濃度を高めているので、炭
素とバナジウムとの化学反応により生成されるバ
ナジウム炭化物層は2000Hv以上の超硬度のもの
となる。しかも、拡散浸透処理には塩浴を使用し
ているので、リング素材の形状が比較的複雑なも
のであつても、全表面で均一な厚さのバナジウム
炭化物層を形成することができる。また、バナジ
ウム炭化物層の厚さは処理要領時間によつて適宜
調整できるが、５〜15μとするのが好ましい。そ
れ以上の厚さとするときには、素材芯部との密着
性が劣つて剥離するおそれがある。また、それ以
下の厚さでは耐久性に劣る。
次に、上記のリング素材を焼入、焼戻しを行い
滲炭部硬度を800〜900Hvとする。これにより、
表面から内部に渡つて炭化物層〜滲炭層〜素地の
３層に渡つて段階的な硬度差をもつ組織が得られ
るために、バナジウム炭化物層の陥没発生が防止
できる。しかも、炭化物層の密着性がさらに良好
となる。
しかる後、研磨仕上げにより表面粗さを1.5μ以
下とする。特には、トラベラとの接触摩耗を考慮
した場合には、0.5μ以下の鏡面仕上げとすること
が望ましい。このようにすれば、最終的には、表
面硬度は2000Hv以上で、かつ、表面粗さの細か
いリングが得られるために、トラベラとの摩擦抵
抗指数を大幅に減少させることができる。
第２図は上記要領にて形成された紡績用リング
１の拡大縦断面図である。ただし、２は芯部、３
は滲炭層、４はバナジウム炭化物層を示す。また
第３図は断面の顕微鏡組成写真（400倍）である。
滲炭層３は焼入処理により微細針状マルテンサイ
トを形成している。
第４図は断面の硬さ分布を示す。ただし、縦軸
はビツカース硬度（HV）、横軸は表面からの深
さ（mm）を示す。図中、Ａは本発明に係る紡績用
リングであり、Ｂは従来の紡績用リングである。
本発明の紡績用リングＡの表面硬度は約
3000HV、その下層の焼入部は約850HVである。
第５図以下は実験結果を示す。第５図は紡出初
期のリングートラベラ摩擦抵抗指数を示す。ただ
し紡出条件は下記表１の通りである。
[Industrial Application Field] The present invention relates to a spinning ring, and particularly to a spinning ring suitable for high-speed rotation of a spindle. [Prior Art] Conventionally, various methods have been tried to impart high hardness and wear resistance to spinning rings. Generally, a method is adopted in which case-hardened steel is used to form the steel by turning, and a predetermined hardness is obtained by quenching and tempering after decarburizing.
Alternatively, a method of nitriding the ring surface has also been adopted. Other treatments include 20 ~
A method of forming a metal carbide diffusion layer with a thickness of 50 μm has also been attempted (for example, Utility Model Publication No. 59-31715). However, in either method, the rotation speed of the spindle is limited to 15,000 to 18,000 rpm. When the spindle rotational speed is increased beyond that, the ring wears out prematurely and the thread is often broken, making it unsuitable for practical use. [Problems to be Solved by the Invention] It is not sufficient to simply increase the hardness of the ring surface. According to experimental results, when the high hardness layer is made thicker than necessary, problems such as peeling occur. In addition, when there is a large difference in hardness between the ring core and the surface hardened layer, there may be problems such as depression of the high hardness layer. Furthermore, some synthetic fibers, such as acrylic synthetic fibers, contain chlorides. In this case, there are problems such as heat generation due to contact with the traveler and generation of chlorine gas, which corrodes the ring. In view of these points, an object of the present invention is to provide a spinning ring that is suitable for high-speed rotation of a spindle and has excellent corrosion resistance. [Means for Solving the Problems] The present invention for achieving the above object will be explained using drawings corresponding to embodiments. The spinning ring 1 of the present invention is formed into a predetermined ring shape using carbon steel as a material. Carbon steel containing at least 0.4% carbon is used. Alternatively, after molding using case-hardened steel, decarburization treatment is performed in advance. This ring material is heated in a salt bath containing vanadium powder for a predetermined period of time to harden the surface of the material at a depth of 5 to 15 μm.
Forms a vanadium carbide layer of 2000HV or more. Next, quenching and tempering treatment is performed to improve the adhesion strength of the surface carbides. As a result, the hardness of the internal decarburized portion in contact with the carbide layer is set to 800 to 900 Hv.
Next, the contact surface of the traveler is polished to a surface roughness of 1.5μ or less. [Operation] Carbon concentration on the surface of the ring material is increased by precarburization treatment, and then diffusion permeation treatment is performed by heating in a salt bath containing vanadium powder, so that a chemical reaction occurs between the carbon and vanadium in the ring material. The vanadium carbide layer produced is extremely hard. Moreover, since a salt bath is used for the diffusion permeation treatment, a vanadium carbide layer of uniform thickness can be formed. In addition, the thickness of the vanadium carbide layer is 5~
Since the thickness is 15μ, there is no risk of peeling off of the carbide layer. In addition, after the carbide layer is formed, the hardness of the decarburized part is made 800 to 900 Hv by quenching and tempering.
Since a structure with a stepwise difference in hardness consisting of three layers from the surface to the inside, ie, a carbide layer, a charcoal layer, and a matrix, is obtained, there is no fear of the vanadium carbide layer sinking. Furthermore, the surface hardness of the vanadium carbide layer was
Since the surface roughness is set to 2000Hv or more and the surface roughness is reduced to 1.5μ or less by polishing, the frictional resistance index with the traveler can be significantly reduced. [Example] FIG. 1 is a process diagram showing the procedure for manufacturing a spinning ring of the present invention. For example, case hardened steel is used as the material, and it is turned into a predetermined shape. Next, a decharring treatment is performed. These turning and decharring processes are the same as well-known procedures. However, tool steel or the like may be used instead of case hardening steel. In this case, carbon steel containing 0.4% or more of carbon is used in order to be compatible with the treatment described later. Next, the ring material is heated to about 900° C. in a salt bath containing vanadium powder, and vanadium is diffused into the surface to form a vanadium carbide layer. In this case, the material has been previously decarburized to increase the carbon concentration on the surface of the ring material, so the vanadium carbide layer produced by the chemical reaction between carbon and vanadium has a super hardness of 2000 Hv or more. Moreover, since a salt bath is used for the diffusion and infiltration treatment, even if the shape of the ring material is relatively complex, a vanadium carbide layer with a uniform thickness can be formed on the entire surface. Further, the thickness of the vanadium carbide layer can be adjusted as appropriate depending on the processing time, but it is preferably 5 to 15 microns. If the thickness is greater than that, there is a risk that the adhesion to the material core will be poor and the material will peel off. Furthermore, if the thickness is less than that, the durability will be poor. Next, the above ring material is quenched and tempered to have a hardness of 800 to 900 Hv at the decharred part. This results in
Since a structure with a stepwise hardness difference is obtained from the surface to the inside of the three layers: the carbide layer, the charcoal layer, and the base material, it is possible to prevent the vanadium carbide layer from collapsing. Moreover, the adhesion of the carbide layer becomes even better. After that, the surface roughness is made 1.5μ or less by polishing. In particular, when considering contact wear with the traveler, it is desirable to have a mirror finish of 0.5μ or less. In this way, a ring with a surface hardness of 2000 Hv or more and a fine surface roughness is finally obtained, so that the index of frictional resistance with the traveler can be significantly reduced. FIG. 2 is an enlarged longitudinal sectional view of the spinning ring 1 formed in the above manner. However, 2 is the core, 3
4 indicates a carbonized layer, and 4 indicates a vanadium carbide layer. Furthermore, Fig. 3 is a cross-sectional microscopic composition photograph (400x magnification).
The decarburized layer 3 forms fine acicular martensite by quenching treatment. FIG. 4 shows the hardness distribution in the cross section. However, the vertical axis shows the Vickers hardness (HV), and the horizontal axis shows the depth (mm) from the surface. In the figure, A is a spinning ring according to the present invention, and B is a conventional spinning ring.
The surface hardness of the spinning ring A of the present invention is approximately
3000HV, and the quenched part below it is about 850HV. Figure 5 and the following show the experimental results. FIG. 5 shows the ring-traveler frictional resistance index at the initial stage of spinning. However, the spinning conditions are as shown in Table 1 below.
【表】
なお、従来品Ｂはトラベラ接触面を粗面処理し
た通常のリングである。
図から明らかなように、本発明の紡績用リング
Ａは従来品Ｂに比し摩擦抵抗指数が小さく、かつ
早期に摩擦抵抗は安定する。
第６図はスピンドル回転数と糸切れ数との関係
を示す測定結果のグラフである。ただし紡出条件
は下記表２の通りである。[Table] Conventional product B is a normal ring with a roughened traveler contact surface. As is clear from the figure, the spinning ring A of the present invention has a lower frictional resistance index than the conventional product B, and the frictional resistance stabilizes at an early stage. FIG. 6 is a graph of measurement results showing the relationship between the spindle rotation speed and the number of yarn breaks. However, the spinning conditions are as shown in Table 2 below.
【表】
従来品Ｂはスピンドル回転数18000rpmを越え
ると糸切れ数は急増する。従つて、それ以上の回
転は使用不可能である。
これに対し本発明の紡績用リングＡは、
26000rpm付近までは糸切れ数は、ほとんど増加
しない。かつ糸切れ数も少ない。
次に下記表３は耐蝕試験の比較表である。[Table] For conventional product B, the number of thread breaks increases rapidly when the spindle rotation speed exceeds 18,000 rpm. Therefore, further rotation is not possible. On the other hand, the spinning ring A of the present invention is
The number of thread breaks hardly increases until around 26000 rpm. Also, the number of thread breaks is small. Next, Table 3 below is a comparison table of corrosion resistance tests.
本発明によるときは、外表面にバナジウム炭化
物を形成し、トラベラの接触面を研摩して表面粗
さ1.5μ以下としたから、トラベラとの接触抵抗が
小さく、なじみ性が良好となり、超高速回転でト
ラベラとの摩擦テンシヨンが変動せず、糸切れ糸
班が減少し、かつ耐摩耗性を有する。また、バナ
ジウム炭化物層は５〜15μの厚さとし、焼入焼戻
し処理を施したから層の密着性が良好に維持さ
れ、剥離するおそれがないとともに、素材自体に
所要硬度を有せしめたから、バナジウム炭化物層
との密着は良好でかつ炭化物層直下のリング母材
の硬度を高めたから、バナジウム炭化物層は陥没
することがない。従つて、トラベラ接触面に異常
摩耗を発生することがない。このため、スピンド
ルの回転数を従来限界とされている18000rpmを
越えてそれ以上の回転数にても安定して紡出作業
を行うことができる。
更に、本発明の紡績用リングは耐蝕性に優れ、
アクリル系合成繊維の紡出に際しても発錆するこ
とがない等の効果を有する。
According to the present invention, since vanadium carbide is formed on the outer surface and the contact surface of the traveler is polished to a surface roughness of 1.5μ or less, the contact resistance with the traveler is small, the compatibility is good, and ultra-high speed rotation is achieved. The friction tension with the traveler does not change, the number of yarn breakage is reduced, and it has wear resistance. In addition, the vanadium carbide layer has a thickness of 5 to 15 μm and has been quenched and tempered, so the adhesion of the layer is maintained well and there is no risk of peeling. Since the adhesion with the layer is good and the hardness of the ring base material directly under the carbide layer is increased, the vanadium carbide layer will not cave in. Therefore, abnormal wear does not occur on the contact surface of the traveler. Therefore, the spinning operation can be performed stably even when the spindle rotation speed exceeds the conventional limit of 18,000 rpm. Furthermore, the spinning ring of the present invention has excellent corrosion resistance,
It has the effect of not causing rust even when spinning acrylic synthetic fibers.
第１図は本発明の紡績用リングの製造要領を示
す工程図、第２図は拡大縦断面図、第３図は断面
の金属組織を表す顕微鏡写真、第４図は断面の硬
さ分布を示すグラフ、第５図はリングートラベラ
摩擦抵抗指数測定グラフ、第６図はスピンドル回
転数と糸切れ数との関係を示す測定グラフであ
る。
１は紡績用リング、２は芯部、３は滲炭層、４
はバナジウム炭化物層、Ａは本発明の紡績用リン
グ、Ｂは従来の紡績用リングである。
Fig. 1 is a process diagram showing the manufacturing procedure of the spinning ring of the present invention, Fig. 2 is an enlarged longitudinal sectional view, Fig. 3 is a micrograph showing the metal structure of the cross section, and Fig. 4 shows the hardness distribution of the cross section. The graphs shown in FIG. 5 are a ring-traveler friction resistance index measurement graph, and FIG. 6 is a measurement graph showing the relationship between the spindle rotation speed and the number of thread breaks. 1 is a spinning ring, 2 is a core, 3 is a charcoal layer, 4
is a vanadium carbide layer, A is a spinning ring of the present invention, and B is a conventional spinning ring.
Claims (1)
する炭素鋼により形成されたリング素材表面に予
め滲炭処理を行い、次に、バナジウム粉末を含む
塩浴中で前記リング素材を所定時間加熱してその
表面に深さ５〜15μで硬度2000Hv以上のバナジウ
ム炭化物層を形成し、次いで焼入、焼戻し処理を
施して滲炭部硬度を800〜900Hvとし、引き続い
て、トラベラ接触面の表面粗さを1.5μ以下に研磨
加工を施すことを特徴とする紡績用リングの製造
方法。1. The surface of a ring material made of carbon steel containing at least 0.4% carbon, such as case-hardened steel, is subjected to decarburizing treatment in advance, and then the ring material is heated for a predetermined period of time in a salt bath containing vanadium powder. A vanadium carbide layer with a hardness of 2000Hv or more is formed on the surface to a depth of 5 to 15μ, and then quenched and tempered to make the hardness of the decarburized part 800 to 900Hv.Subsequently, the surface roughness of the contact surface of the traveler is A method for manufacturing a spinning ring, characterized by polishing it to 1.5μ or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16332685A JPS6228418A (en) | 1985-07-23 | 1985-07-23 | Spinning ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16332685A JPS6228418A (en) | 1985-07-23 | 1985-07-23 | Spinning ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6228418A JPS6228418A (en) | 1987-02-06 |
| JPS6352138B2 true JPS6352138B2 (en) | 1988-10-18 |
Family
ID=15771720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16332685A Granted JPS6228418A (en) | 1985-07-23 | 1985-07-23 | Spinning ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6228418A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025130U (en) * | 1988-06-18 | 1990-01-12 | ||
| JPH02126457A (en) * | 1988-11-04 | 1990-05-15 | Teac Corp | Rotary head type tape recording and reproducing device |
| JP2005330642A (en) * | 2004-05-17 | 2005-12-02 | Braecker Ag | Ring traveler and method for producing the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2646141B2 (en) * | 1989-11-24 | 1997-08-25 | 佐藤 進 | Anomaly detection device |
| JPH04109151A (en) * | 1990-08-29 | 1992-04-10 | Susumu Sato | Sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5064541A (en) * | 1973-10-12 | 1975-05-31 | ||
| JPS57117631A (en) * | 1981-01-16 | 1982-07-22 | Kanai Hiroyuki | Spinning ring |
| JPS5931715U (en) * | 1982-08-24 | 1984-02-28 | 住友電気工業株式会社 | Laminate seat cable |
-
1985
- 1985-07-23 JP JP16332685A patent/JPS6228418A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5064541A (en) * | 1973-10-12 | 1975-05-31 | ||
| JPS57117631A (en) * | 1981-01-16 | 1982-07-22 | Kanai Hiroyuki | Spinning ring |
| JPS5931715U (en) * | 1982-08-24 | 1984-02-28 | 住友電気工業株式会社 | Laminate seat cable |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025130U (en) * | 1988-06-18 | 1990-01-12 | ||
| JPH02126457A (en) * | 1988-11-04 | 1990-05-15 | Teac Corp | Rotary head type tape recording and reproducing device |
| JP2005330642A (en) * | 2004-05-17 | 2005-12-02 | Braecker Ag | Ring traveler and method for producing the same |
| JP4587104B2 (en) * | 2004-05-17 | 2010-11-24 | ブレッカー アクチェンゲゼルシャフト | Ring traveler and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6228418A (en) | 1987-02-06 |
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