JPH0342881Y2 - - Google Patents
Info
- Publication number
- JPH0342881Y2 JPH0342881Y2 JP1982005550U JP555082U JPH0342881Y2 JP H0342881 Y2 JPH0342881 Y2 JP H0342881Y2 JP 1982005550 U JP1982005550 U JP 1982005550U JP 555082 U JP555082 U JP 555082U JP H0342881 Y2 JPH0342881 Y2 JP H0342881Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- section
- distal end
- tubes
- passage
- 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
- 230000037431 insertion Effects 0.000 claims description 32
- 238000003780 insertion Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 description 14
- 238000005452 bending Methods 0.000 description 5
- 239000006059 cover glass Substances 0.000 description 3
- 241000219122 Cucurbita Species 0.000 description 2
- 235000009852 Cucurbita pepo Nutrition 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は挿入部の先端部内において各種チユー
ブが接続される接続管の形状を改良した内視鏡に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope with an improved shape of a connecting tube to which various tubes are connected within the distal end of the insertion section.
一般に、内視鏡の挿入部は可撓管部の先端に湾
曲管部を介して先端構成部が設けられてなる。こ
の挿入部にはチヤンネルチユーブ、送気、送液用
チユーブなど可撓性の各種チユーブが挿通されて
いる。これらチユーブは、挿入部の先端部で一端
側を先端構成部に穿設された通路に嵌着させた接
続管の他端側に接続されている。この接続管の他
端側は逆テーパ部に形成されていて、この逆テー
パ部に上記チユーブを被嵌させたのち、この部分
に糸を巻くことにより、チユーブが接続管から抜
けずらいようにしている。 In general, the insertion section of an endoscope includes a distal end component provided at the distal end of a flexible tube section via a curved tube section. Various flexible tubes such as channel tubes, air supply tubes, and liquid supply tubes are inserted into this insertion portion. These tubes are connected at the distal end of the insertion portion to the other end of a connecting tube whose one end is fitted into a passage bored in the distal end component. The other end of this connecting tube is formed into a reverse tapered part, and after fitting the tube into this reverse tapered part, a thread is wound around this part to prevent the tube from coming off from the connecting pipe. ing.
ところで、近年、内視鏡においては挿入部の細
径化の要望とともに、チヤンネルチユーブや送
気、送液チユーブを大径化させてこれらチユーブ
による機能を向上させるという要望が増大してい
る。しかしながら、挿入部の細径化と各種チユー
ブの大径化とは相反することであるばかりか、と
くに上記接続管の逆テーパ部は他の部分に比べて
大径化しているので、この部分の直径寸法によつ
て挿入部の細径化が大きく制限されてしまうとい
うことがあつた。 Incidentally, in recent years, there has been an increasing demand for endoscopes to have smaller diameter insertion sections, as well as to increase the diameters of channel tubes, air supply tubes, and liquid supply tubes to improve the functions of these tubes. However, not only are decreasing the diameter of the insertion portion and increasing the diameter of various tubes contradictory, but also the reverse taper section of the connecting tube has a larger diameter than other sections, so this section There have been cases where the reduction in diameter of the insertion portion is greatly restricted by the diameter dimension.
本考案は上記事情にもとづきなされたもので、
その目的とするところは、接続管の逆テーパ部の
断面形状をほぼ長円形にすることにより、挿入部
の細径化が上記逆テーパ部によつて大きく制限さ
れることがないようにした内視鏡を提供すること
にある。 This idea was made based on the above circumstances,
The purpose of this is to make the cross-sectional shape of the inversely tapered part of the connecting tube almost oval, so that the diameter reduction of the insertion part is not significantly restricted by the inversely tapered part. The goal is to provide a scope.
以下、本考案の一実施例を第１図乃至第４図を
参照して説明する。第１図中１は内視鏡で、この
内視鏡１は操作部２と挿入部３とからなる。操作
部２は接眼部４、湾曲操作ノブ５、送気、送液用
の操作弁６、鉗子の挿入口体７などが設けられて
いるとともに、図示せぬ光源装置に接続されるユ
ニバーサルコード８が設けられている。また、挿
入部３は可撓管部９の先端に湾曲管部１０を介し
て先端構成部１１が設けられてなる。上記湾曲管
部１０は、第２図に示すように上下左右方向に回
動自在に連結された複数の節輪１２の内周面をゴ
ユなどの弾性材１３で被覆してなる。上記節輪１
２の内周面には周方向に90度間隔でワイヤガイド
１４が設けられ、各ワイヤガイド１４には操作ワ
イヤ１５が挿通されている。これら操作ワイヤ１
５の一端は最先端に位置する節輪１２に連結固定
され、他端は上記湾曲操作ノブ５によつて押し引
き操作されるようになつている。また、先端構成
部１１は、その円柱状をなした本体１６が湾曲管
部１０の最先端に位置する節輪１２に一端部を嵌
合固定して設けられている。この本体１６には、
その中心部に軸方向に貫通した第１の通路１７
と、この第１の通路１７の周囲に第２の通路１
８、第３の通路１９および図示しない第４、第５
の通路が穿設されている。第１乃至第３の通路１
７，１８，１９にはそれぞれ第１乃至第３の接続
管２０，２１，２２が一端側を嵌着させて設けら
れている。第１の接続管２０はストレート状をな
し、第２の接続管２１の他端側は第１の逆テーパ
部２３に形成されているとともにこの第１の逆テ
ーパ部２３はその断面形状が長円形をなしてい
る。そして、この長円形の短軸方向を本体１６の
径方向に沿わせている。また、第３の接続管２２
の他端側は二股に分かれていて、各分岐部分はそ
れぞれ第２、第３の逆テーパ部２４，２５に形成
されているとともに、各逆テーパ部２４，２５は
第１の逆テーパ部２３と同様断面形状がほぼ長円
形状をなし、これらの短軸方向を中体１６の径方
向に沿わせている。 An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Reference numeral 1 in FIG. 1 denotes an endoscope, and this endoscope 1 consists of an operating section 2 and an insertion section 3. The operation section 2 is provided with an eyepiece section 4, a bending operation knob 5, an operation valve 6 for air supply and liquid supply, an insertion port body 7 for forceps, and a universal cord connected to a light source device (not shown). 8 is provided. Further, the insertion section 3 includes a distal end forming section 11 provided at the distal end of the flexible tube section 9 via a curved tube section 10 . As shown in FIG. 2, the curved tube section 10 is formed by covering the inner circumferential surface of a plurality of joint rings 12 rotatably connected in vertical and horizontal directions with an elastic material 13 such as gourd. Above node ring 1
Wire guides 14 are provided on the inner peripheral surface of 2 at intervals of 90 degrees in the circumferential direction, and an operating wire 15 is inserted through each wire guide 14. These operating wires 1
One end of the bending knob 5 is connected and fixed to the node ring 12 located at the most distal end, and the other end can be pushed or pulled by the bending operation knob 5. Further, the distal end component 11 is provided such that its cylindrical main body 16 is fitted and fixed at one end to a node ring 12 located at the most distal end of the curved tube section 10 . This main body 16 includes
A first passage 17 extending axially through the center thereof.
A second passage 1 is formed around this first passage 17.
8, third passage 19 and fourth and fifth passages (not shown)
A passageway has been drilled. First to third passages 1
7, 18, and 19 are respectively provided with first to third connecting pipes 20, 21, 22 with one end fitted thereto. The first connecting pipe 20 has a straight shape, and the other end side of the second connecting pipe 21 is formed into a first inverted tapered part 23, and this first inverted tapered part 23 has a long cross-sectional shape. It is circular. The short axis direction of this oval is aligned in the radial direction of the main body 16. In addition, the third connecting pipe 22
The other end side is bifurcated, and each branched portion is formed into a second and third inverted tapered portion 24 and 25, respectively, and each inverted tapered portion 24 and 25 is formed into a first inverted tapered portion 23. Similarly, the cross-sectional shape is approximately oval, and the short axis direction thereof is along the radial direction of the intermediate body 16.
一方、上記挿入部３内にはイメージガイド２
６、チヤンネルチユーブ２７、送気チユーブ２
８、送液チユーブ２９および一対のライトガイド
３４が挿通されている。上記イメージガイド２６
の先端は上記第１の接続管２０に接続され、後端
は上記操作部２に設けられた接眼部４に光学的に
接続されている。上記第１の接続管２０が取着さ
れた第１の通路１７には対物レンズ３０およびカ
バーガラス３１が順次保持されていて、上記対物
レンズ３０で結像される観察像を上記接眼部４で
観察できるようになつている。上記チヤンネルチ
ユーブ２７の先端部は上記第２の接続管２１の第
１の逆テもに、図示せぬ光源装置に接続されるユ
ニバーサルコード８が設けられている。また、挿
入部３は可撓管部９の先端に湾曲管部１０を介し
て先端構成部１１が設けられてなる。上記湾曲管
部１０は、第２図に示すように上下左右方向に回
動自在に連結された複数の節輪１２の内周面をゴ
ユなどの弾性材１３で被覆してなる。上記節輪１
２の内周面には周方向に90度間隔でワイヤガイド
１４が設けられ、各ワイヤガイド１４には操作ワ
イヤ１５が挿通されている。これら操作ワイヤ１
５の一端は最先端に位置する節輪１２に連結固定
され、他端は上記湾曲操作ノブ５によつて押し引
き操作されるようになつている。また、先端構成
部１１は、その円柱状をなした本体１６が湾曲管
部１０の最先端に位置する節輪１２に一端部を嵌
合固定して設けられている。この本体１６には、
その中心部に軸方向に貫通した第１の通路１７
と、この第１の通路１７の周囲に第２の通路１
８、第３の通路１９および図示しない第４、第５
の通路が穿設されている。第１乃至第３の通路１
７，１８，１９にはそれぞれ第１乃至第３の接続
管２０，２１，２２が一端側を嵌着させて設けら
れている。第１の接続管２０はストレート状をな
し、第２の接続管２１の他端側は第１の逆テーパ
部２３に形成されているとともにこの第１の逆テ
ーパ部２３はその断面形状が長円形をなしてい
る。そして、この長円形の短軸方向を本体１６の
径方向に沿わせている。また、第３の接続管２２
の他端側は二股に分かれていて、各分岐部分はそ
れぞれ第２、第３の逆テーパ部２４，２５に形成
されているとともに、各逆テーパ部２４，２５は
第１の逆テーパ部２３と同様断面形状がほぼ長円
形状をなし、これらの短軸方向を中体１６の径方
向に沿わせている。 On the other hand, there is an image guide 2 inside the insertion section 3.
6, Channel tube 27, Air supply tube 2
8, a liquid feeding tube 29 and a pair of light guides 34 are inserted. Image guide 26 above
The distal end thereof is connected to the first connecting tube 20, and the rear end thereof is optically connected to the eyepiece section 4 provided in the operating section 2. An objective lens 30 and a cover glass 31 are sequentially held in the first passage 17 to which the first connecting tube 20 is attached, and an observation image formed by the objective lens 30 is transmitted to the eyepiece section 4. It is now possible to observe it. A universal cord 8 is provided at the distal end of the channel tube 27 on the first opposite side of the second connecting tube 21 to be connected to a light source device (not shown). Further, the insertion section 3 includes a distal end forming section 11 provided at the distal end of the flexible tube section 9 via a curved tube section 10 . As shown in FIG. 2, the curved tube section 10 is formed by covering the inner circumferential surface of a plurality of joint rings 12 rotatably connected in vertical and horizontal directions with an elastic material 13 such as gourd. Above node ring 1
Wire guides 14 are provided on the inner peripheral surface of 2 at intervals of 90 degrees in the circumferential direction, and an operating wire 15 is inserted through each wire guide 14. These operating wires 1
One end of the bending knob 5 is connected and fixed to the node ring 12 located at the most distal end, and the other end can be pushed or pulled by the bending operation knob 5. Further, the distal end component 11 is provided such that its cylindrical main body 16 is fitted and fixed at one end to a node ring 12 located at the most distal end of the curved tube section 10 . This main body 16 includes
A first passage 17 extending axially through the center thereof.
A second passage 1 is formed around this first passage 17.
8, third passage 19 and fourth and fifth passages (not shown)
A passageway has been drilled. First to third passages 1
7, 18, and 19 are respectively provided with first to third connecting pipes 20, 21, 22 with one end fitted thereto. The first connecting pipe 20 has a straight shape, and the other end side of the second connecting pipe 21 is formed into a first inverted tapered part 23, and this first inverted tapered part 23 has a long cross-sectional shape. It is circular. The short axis direction of this oval is aligned in the radial direction of the main body 16. In addition, the third connecting pipe 22
The other end side is bifurcated, and each branched portion is formed into a second and third inverted tapered portion 24 and 25, respectively, and each inverted tapered portion 24 and 25 is formed into a first inverted tapered portion 23. Similarly, the cross-sectional shape is approximately oval, and the short axis direction thereof is along the radial direction of the intermediate body 16.
一方、上記挿入部３内にはイメージガイド２
６、チヤンネルチユーブ２７、送気チユーブ２
８、送液チユーブ２９および一対のライトガイド
３４が挿通されている。上記イメージガイド２６
の先端は上記第１の接続管２０に接続され、後端
は上記操作部２に設けられた接眼部４に光学的に
接続されている。上記第１の接続管２０が取着さ
れた第１の通路１７には対物レンズ３０およびカ
バーガラス３１が順次保持されていて、上記対物
レンズ３０で結像される観察像を上記接眼部４で
観察できるようになつている。上記チヤンネルチ
ユーブ２７の先端部は上記第２の接続管２１の第
１の逆テーパ部２３に被嵌させられ、後端は上記
操作部２に設けられた挿入口体７に接続されてい
る。また、上記送気チユーブ２８の先端部は第３
の接続管２２の第２の逆テーパ部２４に被嵌さ
れ、さらに上記送液チユーブ２９の先端部は第３
の逆テーパ部２５に被嵌されている。これら送気
チユーブ２８と送液チユーブ２９の後端は上記操
作部２に設けられた操作弁６に接続されていて、
この操作弁６の操作により送気と送液を切換え操
作できるようになつている。なお、第３の接続管
２２が接続された第３の通路１９には先端を上記
カバーガラス３１に向けたノズル３２が嵌着され
ている。また、上記イメージガイド２６、チヤン
ネルチユーブ２７、送液チユーブ２８および送液
チユーブ２９の先端部と第１乃至第３の接続管２
０，２１，２２との接続部分の外周には糸３３が
巻回され、これらの接続が外れずらいようにして
いる。さらに、図示しない第４、第５の通路には
上記一対のライトガイド３４の先端部がそれぞれ
接続されている。これらライトガイド３４の後端
部は操作部２を介してユニバーサルコード８に通
され、光源装置で出力される照明光を導くように
なつている。 On the other hand, there is an image guide 2 inside the insertion section 3.
6, Channel tube 27, Air supply tube 2
8, a liquid feeding tube 29 and a pair of light guides 34 are inserted. Image guide 26 above
The distal end thereof is connected to the first connecting tube 20, and the rear end thereof is optically connected to the eyepiece section 4 provided in the operating section 2. An objective lens 30 and a cover glass 31 are sequentially held in the first passage 17 to which the first connecting tube 20 is attached, and an observation image formed by the objective lens 30 is transmitted to the eyepiece section 4. It is now possible to observe it. The distal end of the channel tube 27 is fitted into the first reverse tapered section 23 of the second connecting tube 21, and the rear end is connected to the insertion port body 7 provided in the operating section 2. Further, the tip of the air supply tube 28 is connected to the third
The liquid feeding tube 29 is fitted into the second reverse tapered portion 24 of the connecting tube 22, and the distal end portion of the liquid feeding tube 29 is fitted into the third inversely tapered portion 24 of the connecting tube 22.
It is fitted into the reverse tapered portion 25 of. The rear ends of these air supply tubes 28 and liquid supply tubes 29 are connected to the operation valve 6 provided in the operation section 2,
By operating this operation valve 6, it is possible to switch between air supply and liquid supply. Note that a nozzle 32 whose tip is directed toward the cover glass 31 is fitted into the third passage 19 to which the third connecting pipe 22 is connected. Furthermore, the distal ends of the image guide 26, channel tube 27, liquid feeding tube 28, and liquid feeding tube 29 and the first to third connecting tubes 2
A thread 33 is wound around the outer periphery of the connection portions 0, 21, and 22 to prevent these connections from coming off. Furthermore, the tips of the pair of light guides 34 are connected to fourth and fifth passages (not shown), respectively. The rear ends of these light guides 34 are passed through the universal cord 8 via the operating section 2 to guide illumination light output from the light source device.
このような構成の内視鏡１によれば、先端構成
部１１の本体１６に形成された第２、第３の通路
１８，１９にチヤンネルチユーブ２７と送気チユ
ーブ２８および送液チユーブ２９をそれぞれ接続
するための第２、第３の接続管２１，２２の第１
乃至第３の逆テーパ部２３，２４，２５の断面形
状を長円形状にし、その短軸方向を上記本体１６
の径方向に沿わせたから、上記各逆テーパ部２
３，２４，２５の断面形状が円形の場合に比べて
その断面積（通路面積）を減少させることなく、
挿入部３の径方向に占める寸法を少なくすること
ができる。すなわち、各逆テーパ部２３，２４，
２５の断面形状を第４図に鎖線で示す円形の状態
から実線で示す長円形にすることにより、上記各
逆テーパ部２３，２４，２５が挿入部３の径方向
に占める寸法がそれぞれ2h1づつ減少するから、
その寸法差の分だけ挿入部３を細径化することが
できる。言い換えれば、挿入部３を大径化させず
にチヤンネルチユーブ２７、送気チユーブ２８お
よび送液チユーブ２９の断面積を増大させること
ができる。 According to the endoscope 1 having such a configuration, the channel tube 27, the air supply tube 28, and the liquid supply tube 29 are provided in the second and third passages 18 and 19 formed in the main body 16 of the distal end component 11, respectively. The first of the second and third connecting pipes 21 and 22 for connecting
The cross-sectional shape of the third reverse tapered portions 23, 24, 25 is oval, and the short axis direction thereof is aligned with the main body 16.
Since each of the above-mentioned reverse tapered portions 2
3, 24, and 25 without reducing the cross-sectional area (passage area) compared to the case where the cross-sectional shape is circular.
The dimension occupied by the insertion portion 3 in the radial direction can be reduced. That is, each reverse tapered portion 23, 24,
By changing the cross-sectional shape of the insertion portion 25 from a circular shape shown by a chain line in FIG . Because it gradually decreases,
The diameter of the insertion portion 3 can be reduced by the size difference. In other words, the cross-sectional areas of the channel tube 27, the air tube 28, and the liquid tube 29 can be increased without increasing the diameter of the insertion portion 3.
なお、本考案は上記一実施例に限定されず、た
とえば各逆テーパ部２３，２４，２５は第５図に
示すようにその径方向の一端側だけを押し潰した
ほぼ長円形であつても、各逆テーパ部２３，２
４，２５が挿入部３の径方向において占めるスペ
ースを減少させることができる。 Note that the present invention is not limited to the above-mentioned embodiment; for example, each of the inverted tapered portions 23, 24, and 25 may be substantially oval with only one radial end crushed as shown in FIG. , each reverse tapered portion 23,2
4 and 25 in the radial direction of the insertion portion 3 can be reduced.
以上述べたように本考案は、挿入部の先端部内
においてこの挿入部に挿通された各種チユーブが
接続される接続管の逆テーパ部の断面形状をほぼ
長円形にするとともに、その短軸方向を挿入部の
径方向に沿わせたから、上記逆テーパ部が挿入部
の径方向に占めるスペースを減少させることがで
きる。したがつて、その分だけ挿入部を細径化す
ることができる。とくに、内視鏡の挿入部の太さ
はその先端部の太さによつて決定されると言つて
も過言でないから、その先端部を細径化させるこ
とができたという実用上の効果は多大である。換
言すれば、挿入部を大径化させずに上記各種チユ
ーブの断面積を増大させ、これらチユーブによる
機能の向上を計ることができる。 As described above, in the present invention, the cross-sectional shape of the reverse tapered part of the connecting tube to which various tubes inserted into the insertion section are connected is made approximately oval within the distal end of the insertion section, and the short axis direction thereof is Since the tapered portion is arranged along the radial direction of the insertion portion, the space occupied by the reverse tapered portion in the radial direction of the insertion portion can be reduced. Therefore, the insertion portion can be made smaller in diameter by that amount. In particular, it is no exaggeration to say that the thickness of the insertion section of an endoscope is determined by the thickness of its tip, so the practical effect of reducing the diameter of the tip is It's a huge amount. In other words, it is possible to increase the cross-sectional area of the various tubes described above without increasing the diameter of the insertion portion, and to improve the functions of these tubes.
第１図乃至第４図は本考案の一実施例を示し、
第１図は内視鏡の構成図、第２図は挿入部先端部
の断面図、第３図は第２図−線に沿う断面
図、第４図は接続管の逆テーパ部の側面図、第５
図は本考案の他の実施例を示す接続管の逆テーパ
部の側面図である。
３……挿入部、２１，２２……接続管、２３，
２４，２５……逆テーパ部、２７……チヤンネル
チユーブ、２８……送液チユーブ、２９……送気
チユーブ。
1 to 4 show an embodiment of the present invention,
Figure 1 is a configuration diagram of the endoscope, Figure 2 is a sectional view of the distal end of the insertion section, Figure 3 is a sectional view taken along the line shown in Figure 2, and Figure 4 is a side view of the reverse tapered part of the connecting tube. , 5th
The figure is a side view of a reverse tapered portion of a connecting pipe showing another embodiment of the present invention. 3... Insertion section, 21, 22... Connection tube, 23,
24, 25... Reverse taper portion, 27... Channel tube, 28... Liquid feeding tube, 29... Air feeding tube.
Claims (1)
れた各種チユーブを逆テーパ部を有する接続管に
接続する内視鏡において、この接続管の逆テーパ
部の断面形状をほぼ長円形にするとともに、その
短軸方向を挿入部の径方向に沿わせたことを特徴
とする内視鏡。 In an endoscope in which various tubes inserted through the insertion section are connected to a connecting tube having a reverse tapered section within the distal end of the insertion section, the cross-sectional shape of the reverse tapered section of the connecting tube is approximately oval, and the An endoscope characterized in that the short axis direction is along the radial direction of the insertion section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP555082U JPS58108802U (en) | 1982-01-19 | 1982-01-19 | Endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP555082U JPS58108802U (en) | 1982-01-19 | 1982-01-19 | Endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58108802U JPS58108802U (en) | 1983-07-25 |
| JPH0342881Y2 true JPH0342881Y2 (en) | 1991-09-09 |
Family
ID=30018350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP555082U Granted JPS58108802U (en) | 1982-01-19 | 1982-01-19 | Endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58108802U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6157827A (en) * | 1984-08-30 | 1986-03-24 | Seiko Electronic Components Ltd | Lithium niobate resonator |
| JP5073627B2 (en) * | 2008-09-25 | 2012-11-14 | 富士フイルム株式会社 | Endoscope |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559230B2 (en) * | 1975-01-18 | 1980-03-08 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722984Y2 (en) * | 1978-06-30 | 1982-05-19 |
-
1982
- 1982-01-19 JP JP555082U patent/JPS58108802U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559230B2 (en) * | 1975-01-18 | 1980-03-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58108802U (en) | 1983-07-25 |
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