JPH03557B2 - - Google Patents
Info
- Publication number
- JPH03557B2 JPH03557B2 JP58069050A JP6905083A JPH03557B2 JP H03557 B2 JPH03557 B2 JP H03557B2 JP 58069050 A JP58069050 A JP 58069050A JP 6905083 A JP6905083 A JP 6905083A JP H03557 B2 JPH03557 B2 JP H03557B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- rubber
- reinforcing
- rubber layer
- rubber tube
- 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 - Lifetime
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 66
- 230000007423 decrease Effects 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims 2
- 239000003921 oil Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000032798 delamination Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
【発明の詳細な説明】
この発明は可撓性ゴム管に関し、さらに詳細に
いえば、各単位鉄管をフロータで浮揚させた浚渫
作業用鉄管パイプラインに可撓性を与えるため、
所定数の単位鉄管毎に単位鉄管間に介在させるゴ
ム製継手管、又は沖合に碇泊するタンカーから陸
上の原油貯蔵施設へ原油を送るために使用される
ゴム製油送管であつて、フロートにより作業時海
面に浮揚され、或は発泡層を内蔵して海面に浮揚
されるゴム製油送管等の可撓性ゴム管に関する。DETAILED DESCRIPTION OF THE INVENTION This invention relates to flexible rubber pipes, and more specifically, in order to provide flexibility to an iron pipe pipeline for dredging work in which each unit iron pipe is levitated by a floater,
Rubber joint pipes that are interposed between unit iron pipes for each predetermined number of unit iron pipes, or rubber oil transmission pipes used to transport crude oil from tankers anchored offshore to onshore crude oil storage facilities, and are operated by floats. The present invention relates to flexible rubber pipes such as rubber oil pipes that are floated on the sea surface or that have a built-in foam layer and are floated on the sea surface.
従来のゴム製継手管は、第６図に示すように、
内層ゴム１１と外層ゴム１２との間に主補強層１
３を介在させ、ゴム製継手管の端部寄りにおい
て、主補強層１３間にエツジ締め付け用ワイヤ１
７を介在させてなる。 The conventional rubber joint pipe is as shown in Fig. 6.
A main reinforcing layer 1 is provided between the inner rubber layer 11 and the outer rubber layer 12.
An edge tightening wire 1 is interposed between the main reinforcing layer 13 near the end of the rubber joint pipe.
7 is interposed.
尚、１６は内層ゴム１１の外周に対して密着状
に嵌合したフランジであり、１８はフランジ１６
の接続用端面に設けたパツキングである。 In addition, 16 is a flange that is tightly fitted to the outer periphery of the inner rubber layer 11, and 18 is a flange that is tightly fitted to the outer periphery of the inner rubber layer 11.
This is the packing provided on the connection end face of the
また、従来のゴム製油送管は、第７図に示すよ
うに、内層ゴム１１と外層ゴム１２との間に主補
強層１３を介在させるとともに、周方向補強ワイ
ヤを有する補強層１４を２層介在させ、ゴム製油
送管の端部寄りにおいて、主補強層１３間にエツ
ジ締め付け用ワイヤ１７を介在させるとともに、
周方向補強ワイヤ層１４と外層ゴム１２との間に
スポンジ層１９を介在させてなる。尚、１６は内
層ゴム１１の内周に対して密着状に嵌合したフラ
ンジである。 Furthermore, as shown in FIG. 7, a conventional rubber oil pipe has a main reinforcing layer 13 interposed between an inner rubber layer 11 and an outer rubber layer 12, and two reinforcing layers 14 having circumferential reinforcing wires. An edge tightening wire 17 is interposed between the main reinforcing layers 13 near the end of the rubber oil pipe, and
A sponge layer 19 is interposed between the circumferential reinforcing wire layer 14 and the outer rubber layer 12. Note that 16 is a flange that is tightly fitted to the inner circumference of the inner rubber layer 11.
そして、浚渫用パイプラインに用いるゴム製継
手管のうち、作業船上のポンプの吸引口又は排砂
口パイプに直接接続されるもの、或はゴム製油送
管のうち、第２図に示すように、一点係留ブイに
直接接続されるものにおいては、作業船又は一点
係留ブイに接続される端部が比較的急角度に湾曲
され、該湾曲部分に応力集中が発生するので、フ
ランジ１６と内層ゴム１１との間、主補強層１
３、周方向補強ワイヤを有する補強層１４と内層
ゴム１１、外層ゴム１２との間で剥離、損傷等が
起り易い。 Among the rubber joint pipes used for dredging pipelines, those that are directly connected to the suction port or sand discharge port pipe of the pump on the work boat, or the rubber oil transmission pipes as shown in Figure 2. In the case of a type that is directly connected to a single-point mooring buoy, the end connected to the work boat or single-point mooring buoy is curved at a relatively steep angle, and stress concentration occurs in the curved part, so the flange 16 and the inner rubber layer 11, main reinforcing layer 1
3. Peeling, damage, etc. are likely to occur between the reinforcing layer 14 having circumferential reinforcing wires, the inner rubber layer 11, and the outer rubber layer 12.
応力集中の発生に伴なうこれら欠点を解消する
ために、第８図に示すように、ゴム製継手管又は
ゴム製油送管の端部において、外層ゴム１２に内
接させて補強ワイヤ層２０および補強層２１を追
加することが行なわれている。 In order to eliminate these drawbacks associated with the occurrence of stress concentration, as shown in FIG. Additionally, a reinforcing layer 21 is added.
このように構成することにより、端部での応力
集中に起因する剥離、損傷等を有効に防止し得る
のであるが、金属性のフランジ１６、エツジ締め
付け用ワイヤ１７等が設けられて剛直となつてい
る端部は、剛直さを増して屈曲性をより一層減退
させ、端部とゴム管本体中央部との間において著
しい剛性の差を生じさせることとなる。したがつ
て、使用時に比較的急角度に湾曲されるゴム製継
手管又はゴム製油送管は、剛性の段差部（剛性が
急変する部分）においてキンク（くびれ折れ）を
生じて、内層ゴム１１、外層ゴム１２に摩耗、亀
裂を生じさせ、或は上記したような層間剥離を生
ずることになる。 With this configuration, peeling, damage, etc. caused by stress concentration at the end can be effectively prevented, but the metal flange 16, edge tightening wire 17, etc. are provided to make it rigid The bent end portion increases in rigidity and further reduces flexibility, resulting in a significant difference in rigidity between the end portion and the central portion of the rubber tube main body. Therefore, when a rubber joint pipe or a rubber oil pipe is bent at a relatively steep angle during use, a kink (constriction) occurs at the stepped part of the rigidity (a part where the rigidity suddenly changes), and the inner layer rubber 11, This may cause wear and tear on the outer rubber layer 12, or may cause delamination as described above.
また、最近は、キンクが発生しても、外力を除
去することにより自動的に復元させることを目的
として、補強ワイヤを全く用いない可撓性ゴム管
が開発されるに至つているが、この場合には、主
補強層１３、周方向補強ワイヤを有する補強層１
４と同等の強度を有する補強層を介在させること
によつて可撓性ゴム管を強化しなければならな
い。したがつて、このような補強層を介在させた
可撓性ゴム管自体の成形時間が長くかかるのみな
らず、この補強層が補強ワイヤを有する補強層１
３，１４より高価であるから、可撓性ゴム管が高
価なものとなる欠点を有していた。 In addition, recently, flexible rubber tubes that do not use any reinforcing wires have been developed, with the aim of automatically restoring the tube by removing external force even if a kink occurs. In this case, the main reinforcing layer 13, the reinforcing layer 1 with circumferential reinforcing wires
The flexible rubber tube must be strengthened by intervening a reinforcing layer with a strength equivalent to that of 4. Therefore, not only does it take a long time to mold the flexible rubber tube itself with such a reinforcing layer interposed therebetween, but also the reinforcing layer 1 having reinforcing wires takes a long time.
Since it is more expensive than 3 and 14, it has the disadvantage that the flexible rubber tube is expensive.
この発明は、浚渫用パイプラインに用いるゴム
製継手管、ゴム製油送管等、可撓性ゴム管の端部
での応力集中に起因する剥離、損傷等を有効に防
止するとともに、可撓性ゴム管の端部から中央部
にかけて剛性が急変する部分を皆無としてキンク
の発生を有効に防止し、以て上記の欠点を解消す
ることを目的とする。 This invention effectively prevents peeling, damage, etc. caused by stress concentration at the ends of flexible rubber pipes used in dredging pipelines, such as rubber joint pipes and rubber oil pipes. It is an object of the present invention to eliminate the above-mentioned drawbacks by effectively preventing the occurrence of kinks by eliminating any part where the rigidity suddenly changes from the end to the center of the rubber tube.
かかる目的を達成するためのこの発明の可撓性
ゴム管の構成としては、内層ゴムおよび外層ゴム
にて補強層を埋設してなる可撓性ゴム管におい
て、可撓性ゴム管の端部の外層ゴム又は／および
補強層間に、短小繊維又は短小ワイヤを混入した
補強用ゴム層を埋設し、該補強用ゴム層の厚みを
ゴム管本体の中央に向かつて漸減させたことを特
徴としている。 The flexible rubber tube of the present invention has a structure in which a reinforcing layer is embedded in an inner rubber layer and an outer rubber layer, and the end portion of the flexible rubber tube is A reinforcing rubber layer containing short fibers or short wires is embedded between the outer rubber layer and/or the reinforcing layer, and the thickness of the reinforcing rubber layer gradually decreases toward the center of the rubber tube body.
以下、この発明の可撓性ゴム管について実施例
を示す添付図面によつて詳細に説明する。 EMBODIMENT OF THE INVENTION Hereinafter, the flexible rubber tube of this invention will be described in detail with reference to the accompanying drawings showing embodiments.
第１図は可撓性ゴム管を示す縦断側面図であ
り、内層ゴム１と外層ゴム２との間に主補強層３
を少なくとも１層介在させるとともに、周方向補
強ワイヤを有する補強層４を少なくとも１層介在
させ、可撓性ゴム管の端部寄りにおいて、外層ゴ
ム２と周方向補強ワイヤ層４との間に、短小繊維
又は短小ワイヤを混入した補強用ゴム層５を１層
埋設し、該補強用ゴム層５の厚みを、可撓性ゴム
管の中央に向かつて漸減するよう選定している。
尚、６は内層ゴム１の内周に対して密着状に嵌合
したフランジであり、７は主補強層３間に設けた
エツジ締め付け用ワイヤであり、内層ゴム１とフ
ランジ６とを抜け止め状に連結するものである。 FIG. 1 is a longitudinal sectional side view showing a flexible rubber tube, with a main reinforcing layer 3 between an inner rubber layer 1 and an outer rubber layer 2.
At least one reinforcing layer 4 having a circumferential reinforcing wire is interposed between the outer rubber layer 2 and the circumferential reinforcing wire layer 4 near the end of the flexible rubber tube. One layer of reinforcing rubber layer 5 mixed with short small fibers or short short wires is embedded, and the thickness of the reinforcing rubber layer 5 is selected so as to gradually decrease toward the center of the flexible rubber tube.
In addition, 6 is a flange that is tightly fitted to the inner periphery of the inner layer rubber 1, and 7 is an edge tightening wire provided between the main reinforcing layer 3 to prevent the inner layer rubber 1 and the flange 6 from coming off. It is connected in a shape.
以上の構成の可撓性ゴム管の作用は次のとおり
である。 The operation of the flexible rubber tube having the above structure is as follows.
第２図に示すように可撓性ゴム管としてのゴム
製油送管Ａを一点係留ブイ９と接続し、図示しな
いタンカーから地上の原油貯蔵基地に原油を送る
ことができる。 As shown in FIG. 2, a rubber oil transmission pipe A as a flexible rubber pipe is connected to a single point mooring buoy 9, and crude oil can be sent from a tanker (not shown) to an above-ground crude oil storage base.
この場合において、ゴム製油送管Ａのうち、一
点係留ブイ９に接続される端部は比較的急角度に
湾曲され、湾曲部分に応力集中が発生するのであ
るが、湾曲部分に補強用ゴム層５を埋設している
ので、層間剥離を確実に防止することができ、さ
らには、補強用ゴム層５の厚みを徐々に減少させ
るようにしているので、補強用ゴム層５を埋設し
た部分と他の部分における剛性も徐々に減少し、
剛性が急変する部分を皆無にして、可撓性ゴム管
にキンクが発生することを効果的に防止すること
ができる。 In this case, the end of the rubber oil transmission pipe A that is connected to the one-point mooring buoy 9 is curved at a relatively steep angle, and stress concentration occurs in the curved part, but there is a reinforcing rubber layer on the curved part. Since the reinforcing rubber layer 5 is buried, it is possible to reliably prevent delamination between the layers.Furthermore, since the thickness of the reinforcing rubber layer 5 is gradually reduced, the part where the reinforcing rubber layer 5 is buried is Stiffness in other parts also gradually decreases,
Since there are no parts where the rigidity suddenly changes, it is possible to effectively prevent kinks from occurring in the flexible rubber tube.
したがつて、内層ゴム１、外層ゴム２における
摩耗、亀裂或は層間剥離等を生じさせることなく
油送作業を行なわせることができる。 Therefore, the oil feeding work can be carried out without causing wear, cracking, delamination, etc. in the inner rubber layer 1 and the outer rubber layer 2.
以上はゴム製油送管の場合についてのみ説明し
たが、浚渫用パイプラインに用いるゴム製継手管
の場合にも同様の作用を奏することは明らかであ
る。また、補強用ゴム層５の埋設位置も適宜選定
できる。 Although the above description has been made only regarding the case of a rubber oil transmission pipe, it is clear that the same effect can be achieved also in the case of a rubber joint pipe used in a dredging pipeline. Moreover, the embedding position of the reinforcing rubber layer 5 can also be selected as appropriate.
第３図は可撓性ゴム管の他の実施例を示す縦断
側面図であり、第１図に示す実施例と異なる点
は、補強用ゴム層５を補強層３，４間に埋設した
点のみである。 FIG. 3 is a longitudinal sectional side view showing another embodiment of the flexible rubber tube, which differs from the embodiment shown in FIG. 1 in that a reinforcing rubber layer 5 is buried between reinforcing layers 3 and 4. Only.
したがつて、第１図に示す実施例と同様に、内
層ゴム１、外層ゴム２における摩耗、亀裂、或は
層間剥離等を生じさせることなく、油送作業、浚
渫作業等の作業を行なうことができる。 Therefore, similar to the embodiment shown in FIG. 1, oil pumping work, dredging work, etc. can be performed without causing abrasion, cracking, or delamination in the inner rubber layer 1 and the outer rubber layer 2. Can be done.
第４図は可撓性ゴム管のさらに他の実施例を示
す縦断側面図であり、第１図に示す実施例と異る
点は、補強ゴム層５′を複数層とした点のみであ
る。 FIG. 4 is a longitudinal sectional side view showing still another embodiment of the flexible rubber tube, and the only difference from the embodiment shown in FIG. 1 is that the reinforcing rubber layer 5' is made of multiple layers. .
したがつて、第１図に示す実施例と同様に、摩
耗、亀裂、層間剥離等を生じさせることなく作業
を行なうことができる。 Therefore, similar to the embodiment shown in FIG. 1, the work can be carried out without causing wear, cracking, delamination, etc.
第５図は可撓性ゴム管のさらに他の実施例を示
す縦断側面図であり、第４図に示す実施例と異な
る点は、１枚１枚の補強ゴム層５′の厚みを一定
とし、各補強ゴム層５′の長さを異ならしめ、外
層ゴム２に近い位置ほど短かい補強ゴム層５′を
埋設した点のみである。 FIG. 5 is a longitudinal sectional side view showing still another embodiment of the flexible rubber tube. The difference from the embodiment shown in FIG. 4 is that the thickness of each reinforcing rubber layer 5' is constant. The only difference is that the lengths of the reinforcing rubber layers 5' are made different, and the shorter reinforcing rubber layers 5' are buried closer to the outer rubber layer 2.
この場合には、補強ゴム層５′全体としての厚
みが、可撓性ゴム管の中央に向かつて漸減するこ
ととなり、第４図に示す実施例と同様に、摩耗、
亀裂、層間剥離等を生じさせることなく作業を行
なうことができる。 In this case, the overall thickness of the reinforcing rubber layer 5' gradually decreases toward the center of the flexible rubber tube, and as in the embodiment shown in FIG.
Work can be carried out without causing cracks, delamination, etc.
尚、複数設けた補強ゴム層５′を埋設する位置
については、補強層３，４間，主補強層３間等適
宜選定することができる他、各補強ゴム層５′を
外層ゴム２と補強層４との間、補強層４間、補強
層３，４間、主補強層３間等それぞれ異なる位置
に埋設することもできる。また、補強ゴム層５′
の長さについても、内層ゴム１に近い位置ほど短
かくすることも可能である。 The position where the plurality of reinforcing rubber layers 5' are buried can be selected as appropriate, such as between the reinforcing layers 3 and 4, between the main reinforcing layers 3, etc. It can also be buried in different positions, such as between the layer 4, between the reinforcing layers 4, between the reinforcing layers 3 and 4, and between the main reinforcing layers 3. In addition, the reinforcing rubber layer 5'
It is also possible to make the length shorter as the position is closer to the inner layer rubber 1.
以上のようにこの発明の可撓性ゴム管は、内層
ゴムおよび外層ゴムにて補強層を埋設してなる可
撓性ゴム管において、可撓性ゴム管の端部の外層
ゴム又は／および補強層間に、短小繊維又は短小
ワイヤを混入した補強用ゴム層を埋設し、該補強
用ゴム層の厚みをゴム管本体の中央に向かつて漸
減させているので、比較的急角度に湾曲される端
部において応力集中が発生しても、補強用ゴム層
にて層間剥離を確実に防止することができ、さら
には補強用ゴム層を埋設した部分と他の部分にお
ける剛性が徐々に変化するので、剛性が急変する
部分を皆無にしてキンクの発生を効果的に防止
し、キンクに起因する摩耗、亀裂等の発生をも防
止することができるという特有の効果を奏する。 As described above, the flexible rubber tube of the present invention is a flexible rubber tube in which a reinforcing layer is embedded with an inner layer rubber and an outer layer rubber. A reinforcing rubber layer containing short small fibers or short wires is embedded between the layers, and the thickness of the reinforcing rubber layer gradually decreases toward the center of the rubber tube body, so that the end is curved at a relatively steep angle. Even if stress concentration occurs in a part, the reinforcing rubber layer can reliably prevent delamination, and furthermore, the rigidity of the part where the reinforcing rubber layer is embedded and the other parts gradually change, so It has the unique effect of effectively preventing the occurrence of kinks by eliminating any parts where the rigidity suddenly changes, and also preventing the occurrence of wear, cracks, etc. caused by kinks.
第１図はこの発明の可撓性ゴム管を示す縦断側
面図、第２図は同上使用状態を示す概略図、第３
図乃至第５図はそれぞれ可撓性ゴム管の他の実施
例を示す縦断側面図、第６図乃至第８図はそれぞ
れ従来の可撓性ゴム管を示す縦断側面図。
１……内層ゴム、２……外層ゴム、３……主補
強層、４……補強層、５，５′……補強用ゴム層。
Fig. 1 is a longitudinal cross-sectional side view showing the flexible rubber tube of the present invention, Fig. 2 is a schematic view showing the same state of use, and Fig. 3
5 to 5 are vertical side views showing other embodiments of the flexible rubber tube, and FIGS. 6 to 8 are vertical side views showing conventional flexible rubber tubes. 1... Inner layer rubber, 2... Outer layer rubber, 3... Main reinforcing layer, 4... Reinforcing layer, 5, 5'... Reinforcing rubber layer.
Claims (1)
てなる可撓性ゴム管において、可撓性ゴム管の端
部の外層ゴム又は／および補強層間に、短小繊維
又は短小ワイヤを混入した補強用ゴム層を埋設
し、該補強用ゴム層の厚みをゴム管本体の長手方
向の中央に向かつて漸減させたことを特徴とする
可撓性ゴム管。 ２ 補強用ゴム層を１層とした上記特許請求の範
囲第１項記載の可撓性ゴム管。 ３ 補強用ゴム層を複数層とした上記特許請求の
範囲第１項記載の可撓性ゴム管。 ４ 各補強用ゴム層の厚みをゴム管本体の中央に
向かつて漸減させた上記特許請求の範囲第３項記
載の可撓性ゴム管。 ５ 各補強用ゴム層の厚みを所定厚みに保持し、
ゴム管の内層寄り又は外層寄りの補強用ゴム層の
埋設長さが最も短くなるように各ゴム層の埋設長
さを漸減させた上記特許請求の範囲第３項記載の
可撓性ゴム管。[Scope of Claims] 1. In a flexible rubber tube in which a reinforcing layer is embedded between an inner rubber layer and an outer rubber layer, short fibers or short fibers are provided between the outer rubber layer and/or the reinforcing layer at the end of the flexible rubber tube. 1. A flexible rubber tube, characterized in that a reinforcing rubber layer mixed with wire is buried therein, and the thickness of the reinforcing rubber layer gradually decreases toward the longitudinal center of the rubber tube body. 2. The flexible rubber tube according to claim 1, which includes a single reinforcing rubber layer. 3. The flexible rubber tube according to claim 1, which includes a plurality of reinforcing rubber layers. 4. The flexible rubber tube according to claim 3, wherein the thickness of each reinforcing rubber layer is gradually decreased toward the center of the rubber tube body. 5 Maintaining the thickness of each reinforcing rubber layer at a predetermined thickness,
The flexible rubber tube according to claim 3, wherein the buried length of each rubber layer is gradually decreased so that the buried length of the reinforcing rubber layer near the inner layer or the outer layer of the rubber tube is the shortest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6905083A JPS59194186A (en) | 1983-04-18 | 1983-04-18 | Flexible rubber pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6905083A JPS59194186A (en) | 1983-04-18 | 1983-04-18 | Flexible rubber pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59194186A JPS59194186A (en) | 1984-11-02 |
| JPH03557B2 true JPH03557B2 (en) | 1991-01-08 |
Family
ID=13391354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6905083A Granted JPS59194186A (en) | 1983-04-18 | 1983-04-18 | Flexible rubber pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59194186A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5505600B2 (en) * | 2009-05-18 | 2014-05-28 | 横浜ゴム株式会社 | Marine hose |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5138088U (en) * | 1974-09-13 | 1976-03-22 | ||
| JPS5327219B2 (en) * | 1975-05-19 | 1978-08-07 | ||
| JPS5540312A (en) * | 1978-09-12 | 1980-03-21 | Bridgestone Tire Co Ltd | Reinforced hose |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5327219U (en) * | 1976-08-17 | 1978-03-08 |
-
1983
- 1983-04-18 JP JP6905083A patent/JPS59194186A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5138088U (en) * | 1974-09-13 | 1976-03-22 | ||
| JPS5327219B2 (en) * | 1975-05-19 | 1978-08-07 | ||
| JPS5540312A (en) * | 1978-09-12 | 1980-03-21 | Bridgestone Tire Co Ltd | Reinforced hose |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59194186A (en) | 1984-11-02 |
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