JPS637452A - Mortar filling type reinforcing bar joint sleeve - Google Patents
Mortar filling type reinforcing bar joint sleeveInfo
- Publication number
- JPS637452A JPS637452A JP14825086A JP14825086A JPS637452A JP S637452 A JPS637452 A JP S637452A JP 14825086 A JP14825086 A JP 14825086A JP 14825086 A JP14825086 A JP 14825086A JP S637452 A JPS637452 A JP S637452A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing bar
- main body
- mortar
- joint sleeve
- protrusion
- 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.)
- Granted
Links
- 230000003014 reinforcing effect Effects 0.000 title claims description 53
- 239000004570 mortar (masonry) Substances 0.000 title claims description 24
- 239000004567 concrete Substances 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 17
- 230000037431 insertion Effects 0.000 claims description 17
- 230000002265 prevention Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は鉄筋コンクリートによる構造物を建築する工事
において、コンクリートを補強する鉄筋の継手として使
用されるモルタル充填式鉄筋継手スリーブの改良に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement of a mortar-filled reinforcing bar joint sleeve used as a joint for reinforcing bars for reinforcing concrete in the construction of reinforced concrete structures.
モルタル充填式鉄筋継手スリーブは、鉄筋の位置ずれが
多少あっても接合が可能であり、又継手作業後に継手部
分にコンクリートを充填する必要がないから、特に、柱
や梁又は壁柱を分割設計し、これらの部材をあらかじめ
工場で製造し、建築工事現場で接合しながら組立てて建
築物を造るプレキャスト鉄筋コンクリート工法の継手と
して広く採用されている。Mortar-filled reinforcing bar joint sleeves can be joined even if the reinforcing bars are slightly misaligned, and there is no need to fill the joint with concrete after jointing, so it is especially suitable for split designs for columns, beams, or wall columns. However, it is widely used as a joint in the precast reinforced concrete construction method, in which these parts are manufactured in advance at a factory and then assembled and joined at the construction site to construct a building.
（従来の技術）
モルタル充填式鉄筋継手スリーブは、特公昭５３−１２
７３２号、特開昭６１−５７７３２号に開示されている
が、プレキャスト鉄筋コンクリート部材の製造において
コンクリートを打設したとき、第８図に示すように、ス
リーブの本体１０内に差し込まれた鉄筋２０がコンクリ
ートの重量や振動のために、スリーブの内面に接して排
気口１３を塞いでしまい、接合現場でモルタル注入が不
可能に−なることも少なくなかった。又、鉄筋が排気口
の反対側に寄りすぎてそこにモルタルが回らず継手性能
が低下することもあった。(Prior art) A mortar-filled reinforcing bar joint sleeve was developed in
No. 732 and Japanese Patent Application Laid-Open No. 61-57732, when concrete is poured in the production of precast reinforced concrete members, as shown in FIG. Due to the weight and vibration of the concrete, it comes into contact with the inner surface of the sleeve and blocks the exhaust port 13, often making it impossible to pour mortar at the joint site. In addition, if the reinforcing bars were too close to the opposite side of the exhaust port, the mortar could not circulate there, resulting in poor joint performance.
（発明が解決しようとする問題点）
本発明はプレキャスト鉄筋コンクリート部材において継
手スリーブ内に挿入した鉄筋の過度の偏心に基づくモル
タル注入不能や継手性能低下等の問題を解決するために
なされたものであり、その目的とするところは、継手ス
リーブ内に挿入された鉄筋がコンクリートの重量や振動
によって過度に偏心しない構造のモルタル充填式鉄筋継
手を提供することにある。(Problems to be Solved by the Invention) The present invention has been made in order to solve problems such as inability to pour mortar and deterioration of joint performance due to excessive eccentricity of reinforcing bars inserted into joint sleeves in precast reinforced concrete members. The purpose is to provide a mortar-filled reinforcing bar joint in which the reinforcing bars inserted into the joint sleeve are not excessively eccentric due to the weight of concrete or vibrations.
（問題点を解決するための手段）
前記目的を達成するため、本発明の特徴とする手段は、
第１図の実施例に示すように、両端に鉄筋挿入口１１．
１２を設けた継手スリーブの本体１０の内部中央の少し
片側寄りに中央突起１５を形成し、プレキャスト鉄筋コ
ンクリート部材の製造中、中央突起により鉄筋挿入口１
１から挿入した鉄筋２０の先端部が過度に偏心すること
を防止したことにある。(Means for solving the problems) In order to achieve the above object, the features of the present invention include:
As shown in the embodiment of FIG. 1, reinforcing bar insertion holes 11 are provided at both ends.
A central protrusion 15 is formed slightly on one side of the interior center of the main body 10 of the joint sleeve provided with the joint sleeve 12, and during the manufacture of the precast reinforced concrete member, the central protrusion 15 serves as a reinforcing bar insertion opening 1.
The purpose is to prevent the tip of the reinforcing bar 20 inserted from 1 from being excessively eccentric.
中央突起１５は、第２図及び第３図の実施例に示すよう
に、切れ目のない中空リング状又は切れ目のある中空リ
ング状で本体ｌＯと一体に形成される。中央突起が形成
する中空部分の内径は挿入された鉄筋の過度の偏心を防
止する程度であればよい。As shown in the embodiments of FIGS. 2 and 3, the central protrusion 15 is integrally formed with the main body 1O in the shape of a continuous hollow ring or a hollow ring with cuts. The inner diameter of the hollow portion formed by the central protrusion may be as long as it prevents excessive eccentricity of the inserted reinforcing bar.
継手スリーブ内に注入充填するモルタルとスリーブとの
密着性を向上するため、第４図に示すように、切れ目の
ない又は切れ目のあるらせん状又はリング状の内部突起
を設けることが望ましいが、特に直管形のスリーブの場
合は、密着性を紡錘形のものと同程度にするため、中央
突起の半径方向高さよりも低い二種類以上の内部突起を
設ける。In order to improve the adhesion between the mortar injected into the joint sleeve and the sleeve, it is desirable to provide a spiral or ring-shaped internal protrusion with no cuts or cuts, as shown in Fig. 4. In the case of a straight tube-shaped sleeve, two or more types of internal protrusions whose height in the radial direction is lower than the central protrusion are provided in order to make the adhesion comparable to that of a spindle-shaped sleeve.
（作用）
本発明のスリーブは１本体１０の内部中央の片側寄りに
挿入される鉄筋よりも少し大きな内径の中空部を軸心に
形成する中央突起１５が設けられるから、プレキャスト
鉄筋コンクリート部材の製造時に鉄筋挿入口１１から挿
入された鉄筋２０がコンクリートの重量や振動によって
偏心しても、鉄筋２０の先端部は中央突起１５により軸
心近くに保持されるから、鉄筋２０が排気口１３を塞ぐ
程偏心したり、又はモルタルが回らない程排気口１３の
反対側に寄ったりすることはない。(Function) Since the sleeve of the present invention is provided with a central protrusion 15 that forms a hollow portion with an inner diameter slightly larger than the reinforcing bar inserted toward one side of the center of the main body 10, it is possible to manufacture a precast reinforced concrete member. Even if the reinforcing bar 20 inserted through the reinforcing bar insertion port 11 becomes eccentric due to the weight or vibration of the concrete, the tip of the reinforcing bar 20 is held near the axis by the central protrusion 15, so that the reinforcing bar 20 will not be eccentric enough to block the exhaust port 13. Or, the mortar will not be so close to the opposite side of the exhaust port 13 that it will not rotate.
スリーブの中央突起１５と両端の鉄筋挿入口１１．１２
の間には複数の中央突起１５よりも半径方向高さの低い
らせん状又はリング状の切れ目のない又は切れ目のある
内部突起１６が形成されるので、内部に挿入充填したモ
ルタルとスリーブの密着性な良好である。特に、スリー
ブの外側の補助鉄筋を巻きやすくするために本体を直管
形にした場合、半径方向高さの異なる二種類以上の内部
突起１６．１７を設け、両端の鉄筋挿入口１１．１２、
各内部突起１６．１７、中央突起１５の内縁の包絡面が
多数の連続紡錘体を形成するようにすると、モルタルと
スリーブの密着性は紡錘形本体のスリーブに劣らない。Center protrusion 15 of the sleeve and reinforcing bar insertion holes 11 and 12 at both ends
Since a spiral or ring-shaped internal protrusion 16 with a radial height lower than that of the plurality of central protrusions 15 is formed between them, the adhesion between the mortar inserted and filled inside the sleeve is improved. It is in good condition. In particular, when the main body is made into a straight tube shape to make it easier to wind the auxiliary reinforcing bars on the outside of the sleeve, two or more types of internal protrusions 16.17 with different radial heights are provided, and reinforcing bar insertion holes 11.12 at both ends,
If the envelope surface of the inner edge of each internal protrusion 16, 17, central protrusion 15 forms a number of continuous spindles, the adhesion between the mortar and the sleeve is not inferior to that of the sleeve with a spindle-shaped body.
（実施例）
本発明を図面に示す実施例に基づいて説明するが、本発
明は実施例により限定されるものではない。(Example) Although the present invention will be described based on an example shown in the drawings, the present invention is not limited to the example.
第１図に示す第一実施例の本体ｌＯはダクタイル鋳鉄か
ら鋳造されたものであり、外形は上半部が下半部よりや
や細目の紡錘形である。上面と下面に鉄筋挿入口１１．
１２が設けられるが、上面の鉄筋挿入口１１は下面の鉄
筋挿入口よりは内径が小さい０本体１０の上端部側面に
は排気口１３が、下端部側面にはモルタル流入口１４が
設けられている０本体１０の中空部には浅い溝のらせん
が設けられ、中央部の上側寄りに中央突起１５が形成さ
れる。中央突起１５は第２図に示すように、切れ目のな
いリング状であり、その中空部分の内径は鉄筋２０の外
径よりも少し太き目である。中央突起１５は、第３図に
示すように、切れ目のあるリング状に形成してもよい。The main body 1O of the first embodiment shown in FIG. 1 is cast from ductile cast iron, and has a spindle-shaped outer shape in which the upper half is slightly narrower than the lower half. Reinforcement insertion holes on the top and bottom surfaces 11.
12 is provided, but the reinforcing bar insertion port 11 on the top surface has a smaller inner diameter than the reinforcing bar insertion port on the bottom surface. An exhaust port 13 is provided on the side surface of the upper end of the main body 10, and a mortar inlet port 14 is provided on the side surface of the lower end. A shallow spiral spiral groove is provided in the hollow part of the main body 10, and a central protrusion 15 is formed near the upper side of the central part. As shown in FIG. 2, the central protrusion 15 has a continuous ring shape, and the inner diameter of its hollow portion is slightly thicker than the outer diameter of the reinforcing bar 20. The central protrusion 15 may be formed in the shape of a ring with cuts, as shown in FIG.
プレキャスト鉄筋コンクリート部材の鉄筋２０は上面の
鉄筋挿入口１１から本体ｌＯ内に差し込まれ、その先端
部は中央突起１５の中空部分にはまる。したがって、コ
ンクリートの重量やコンクリートを打つ振動によって鉄
筋２０の位置がずれても、先端部を中央突起１５が保持
するから、鉄筋２０が過度に偏心して排気口１３を塞い
だり、又はその反対側にモルタルが回らない程寄ったり
することはない。The reinforcing bars 20 of the precast reinforced concrete member are inserted into the main body 10 from the reinforcing bar insertion opening 11 on the top surface, and their tips fit into the hollow part of the central projection 15. Therefore, even if the position of the reinforcing bar 20 shifts due to the weight of the concrete or the vibration of hitting the concrete, the central protrusion 15 holds the tip of the reinforcing bar 20, so that the reinforcing bar 20 may become excessively eccentric and block the exhaust port 13, or move to the opposite side. It doesn't get close enough that the mortar won't turn.
第４図に示す第二実施例の本体ｌＯは直管形である。直
管形のスリーブは補強鉄筋の巻付は作業が容易であるが
、そのままでは注入したモルタルとスリーブの間の密着
性は紡錘形のものよりも劣る。しかし、本発明のものは
、中央突起１５と上下の鉄筋挿入口１１．１２の間に切
れ目なしの又は切れ目のあるリング状の二種類の内部突
起１６．１７が設けられ、内部突起１６の半径方向高さ
は中央突起１５の半径方向高さよりは低いが他方の内部
突起１７よりは高いので、注入されたモルタル３０の破
断面は図において一点鎖線で示す鋸歯状になり、紡錘形
のスリーブに劣らない性能を示す。The main body 1O of the second embodiment shown in FIG. 4 has a straight pipe shape. Although it is easy to wrap reinforcing reinforcing bars around a straight pipe-shaped sleeve, the adhesion between the injected mortar and the sleeve is inferior to that of a spindle-shaped sleeve. However, in the present invention, two types of ring-shaped internal projections 16 and 17 are provided between the central projection 15 and the upper and lower reinforcing bar insertion holes 11.12, and the radius of the internal projection 16 is Since the directional height is lower than the radial height of the central protrusion 15 but higher than the other internal protrusion 17, the fracture surface of the injected mortar 30 has a sawtooth shape, shown by the dashed line in the figure, and is inferior to the spindle-shaped sleeve. Shows no performance.
第５図及び第６図に示す第三実施例の本体１０は紡錘形
であり、前記実施例と同様に鉄筋２０の偏心を規制する
中央突起１５を備えている。又、鉄筋挿入口１１の上に
コンクリート流入防止板４０が取付けられる。スリーブ
１０の上端周壁４１は上方に延長し、その−部はさらに
内半径方向に折れて取付座４２を形成する。コンクリー
ト流入防止板４０は発泡スチロール等の可撓性に富む材
料から形成されるから、従来のゴムキャップに比べると
、取付座４２に至極容易にはめ込むことができる。この
コンクリート流入防止板４０はプレキャスト鉄筋コンク
リート部材の製造時にコンクリートの本体１０内への侵
入を防止する。The main body 10 of the third embodiment shown in FIGS. 5 and 6 is spindle-shaped, and is provided with a central protrusion 15 for regulating the eccentricity of the reinforcing bar 20 as in the previous embodiment. Further, a concrete inflow prevention plate 40 is attached above the reinforcing bar insertion opening 11. The upper peripheral wall 41 of the sleeve 10 extends upward, and its negative portion is further bent in the inner radial direction to form a mounting seat 42. Since the concrete inflow prevention plate 40 is made of a highly flexible material such as expanded polystyrene, it can be fitted into the mounting seat 42 much more easily than a conventional rubber cap. This concrete inflow prevention plate 40 prevents concrete from entering into the main body 10 during manufacturing of the precast reinforced concrete member.
第７図に示す第四実施例の本体１０は直管形であり、第
二実施例と同様に中央突起１５と内部突起１６．１７を
備えている。又、取付座４２．４３は第三実施例とは異
なり、上下に設けられている。上方の取付座４２にはめ
たコンクリート流入防止板４０は、第三実施例と同様に
、プレキャスト鉄筋コンクリート部材製造中のコンクリ
ートのスリーブの本体ｌＯ内への流入を阻止するが、下
方の取付座４３にはめたコンクリート流入防止板４０は
プレキャスト鉄筋コンクリート部材の接合組立時に目地
モルタルがスリーブの本体ｌＯ内への侵入することを防
止する。The main body 10 of the fourth embodiment shown in FIG. 7 is in the form of a straight tube and, like the second embodiment, is provided with a central projection 15 and internal projections 16,17. Further, unlike the third embodiment, the mounting seats 42 and 43 are provided at the top and bottom. The concrete inflow prevention plate 40 fitted to the upper mounting seat 42 prevents the concrete sleeve from flowing into the main body IO during the manufacture of the precast reinforced concrete member, as in the third embodiment, but the concrete inflow prevention plate 40 fitted to the lower mounting seat 43 The fitted concrete inflow prevention plate 40 prevents joint mortar from entering into the main body 10 of the sleeve during the joining and assembly of precast reinforced concrete members.
（発明の効果）
上記の通り、本発明の本体１０は、プレキャスト鉄筋コ
ンクリート部材の製造時に挿入した鉄筋の先端部分を中
央突起１５が保持してコンクリート打設による鉄筋の過
度の偏心を防止するから、従来のスリーブのように鉄筋
が過度に偏心して排気口を塞いだり、組立時にモルタル
が鉄筋の周囲に十分に回らない等の事故は起きないとい
う優れた効果を有する。(Effects of the Invention) As described above, in the main body 10 of the present invention, the central protrusion 15 holds the tip of the reinforcing bar inserted during manufacturing of the precast reinforced concrete member, and prevents excessive eccentricity of the reinforcing bar due to concrete pouring. It has an excellent effect in that accidents such as the reinforcing bar being excessively eccentric and blocking the exhaust port, or the mortar not being able to sufficiently circulate around the reinforcing bar during assembly, do not occur as with conventional sleeves.
又、中央突起１５と上下の鉄筋挿入口１１．１２の間に
は複数の内部突起１６．１７を備えたものは、モルタル
との気密性が良好であるから、外形が補強鉄筋の巻付は
作業の容易な直管型であっても、外形が紡錘型のものに
劣らない性能を有する。In addition, those with a plurality of internal protrusions 16.17 between the central protrusion 15 and the upper and lower reinforcing bar insertion openings 11.12 have good airtightness with mortar, so the outer shape makes it easier to wrap reinforcing reinforcing bars. Even if it is a straight pipe type that is easy to work with, it has performance comparable to that of a spindle-shaped type.
さらに、上下の鉄筋挿入口１１．１２の一方又は双方の
外側にコンクリート流入防止板４０の取付座４２を設け
たものは、取付けに手間のかかるゴムキャップの代りに
、容易に取付は可能なコンクリート流入防止板４０を使
用することができる。Furthermore, the mounting seat 42 of the concrete inflow prevention plate 40 is provided on the outside of one or both of the upper and lower reinforcing bar insertion holes 11, 12, instead of the rubber cap that takes time and effort to install. An inflow prevention plate 40 can be used.
第１図は本発明の第一実施例のスリーブの排気口とモル
タル流入口に沿う縦断面図、
第２図は第１図のＩＩ −ＩＩ線に沿う断面図、８３図
は別の態様の第２図に相当する図、第４図は第二実施例
のスリーブの縦断面図、第５図は第三実施例のスリーブ
の縦断面図、第６図は第５図のスリーブの上面図、
第７図は第四実施例のスリーブの縦断面図であり、
第８図は従来のスリーブの縦断面図である。
図において、符号１０は本体、１１．１２は鉄筋挿入口
、１５は中央突起、１６．１７は内部突起、２０は鉄筋
をそれぞれ示す。FIG. 1 is a longitudinal cross-sectional view along the exhaust port and mortar inlet of the sleeve of the first embodiment of the present invention, FIG. 2 is a cross-sectional view along the line II-II of FIG. 1, and FIG. A diagram corresponding to FIG. 2, FIG. 4 is a vertical sectional view of the sleeve of the second embodiment, FIG. 5 is a vertical sectional view of the sleeve of the third embodiment, and FIG. 6 is a top view of the sleeve of FIG. 5. , FIG. 7 is a longitudinal sectional view of the sleeve of the fourth embodiment, and FIG. 8 is a longitudinal sectional view of the conventional sleeve. In the figure, reference numeral 10 indicates the main body, 11.12 indicates a reinforcing bar insertion port, 15 indicates a central projection, 16.17 indicates an internal protrusion, and 20 indicates a reinforcing bar.
Claims (1)
の管状の本体と、前記両端部の端面に設けられた鉄筋挿
入口とを備えたスリーブであって、前記本体の内部中央
の少し片側に寄った位置に挿入される鉄筋の外径よりも
大きい内径の中空部分を形成するリング状の中央突起が
前記本体と一体に設けられたことを特徴とするモルタル
充填式鉄筋継手スリーブ。 ２）本体は直管型であり、前記本体の内部の中央突起と
鉄筋挿入口の間に前記中央突起の形成する中空部分より
も内径の大きな中空部分を形成する複数のらせん状ない
しリング状の内部突起が前記本体と一体に設けられたこ
とを特徴とする特許請求の範囲第１項記載のモルタル充
填式鉄筋継手スリーブ。 ３）内部突起は半径方向長さの異なる複数の種類からな
り、中央突起と鉄筋挿入口の間の各内部突起の山の先端
を結んでなる空間部は複数の谷を形成することを特徴と
する特許請求の範囲第２項記載のモルタル充填式鉄筋継
手スリーブ。 ４）両端部の一方又は双方の周壁を本体の長手方向に延
長しついで部分的に内半径方向に曲げて円板状のコンク
リート流入防止板の取付座を形成したことを特徴とする
特許請求の範囲第１項ないし第３項のいずれか一つに記
載のモルタル充填式鉄筋継手スリーブ。[Scope of Claims] 1) A sleeve comprising a tubular main body in which both ends have an outer diameter that is the same as or smaller than that of the central part, and reinforcing bar insertion ports provided on the end faces of the both ends, A mortar characterized in that a ring-shaped central protrusion is provided integrally with the main body, forming a hollow portion with an inner diameter larger than the outer diameter of the reinforcing bar inserted at a position slightly to one side of the interior center of the main body. Filled rebar joint sleeve. 2) The main body is a straight pipe type, and a plurality of spiral or ring-shaped hollow parts are formed between the central protrusion inside the main body and the reinforcing bar insertion hole, the inner diameter of which is larger than that of the hollow part formed by the central protrusion. The mortar-filled reinforcing bar joint sleeve according to claim 1, wherein an internal protrusion is provided integrally with the main body. 3) The internal protrusions are of multiple types with different radial lengths, and the space formed by connecting the tips of the ridges of each internal protrusion between the central protrusion and the reinforcing bar insertion hole forms a plurality of valleys. A mortar-filled reinforcing joint sleeve according to claim 2. 4) A patent claim characterized in that one or both peripheral walls of both ends are extended in the longitudinal direction of the main body and partially bent in the inner radial direction to form a mounting seat for a disc-shaped concrete inflow prevention plate. Mortar-filled reinforcing bar joint sleeve according to any one of items 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61148250A JPH0784778B2 (en) | 1986-06-26 | 1986-06-26 | Mortar filling type rebar joint sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61148250A JPH0784778B2 (en) | 1986-06-26 | 1986-06-26 | Mortar filling type rebar joint sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS637452A true JPS637452A (en) | 1988-01-13 |
| JPH0784778B2 JPH0784778B2 (en) | 1995-09-13 |
Family
ID=15448586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61148250A Expired - Lifetime JPH0784778B2 (en) | 1986-06-26 | 1986-06-26 | Mortar filling type rebar joint sleeve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0784778B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0361024U (en) * | 1989-10-20 | 1991-06-14 | ||
| JPH0421626U (en) * | 1990-06-13 | 1992-02-24 | ||
| EP0547319A1 (en) * | 1991-12-19 | 1993-06-23 | Splice Sleeve Japan, Ltd. | Mortar grouting type connector for reinforcing bars |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5082819U (en) * | 1973-12-01 | 1975-07-16 | ||
| JPS5083123U (en) * | 1973-12-05 | 1975-07-16 | ||
| JPS521616U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS527854A (en) * | 1975-07-09 | 1977-01-21 | Nippon Steel Corp | Plug for drawing metal pipe |
| JPS5226728U (en) * | 1975-08-15 | 1977-02-24 | ||
| JPS5312732A (en) * | 1976-07-23 | 1978-02-04 | Eutectic Corp | Safety doubleeinjector spray device |
| JPS5475126A (en) * | 1977-11-25 | 1979-06-15 | Hasegawa Chiyuukoushiyo Kk | Method of joining bar steel for deformed bar concrete |
-
1986
- 1986-06-26 JP JP61148250A patent/JPH0784778B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5082819U (en) * | 1973-12-01 | 1975-07-16 | ||
| JPS5083123U (en) * | 1973-12-05 | 1975-07-16 | ||
| JPS521616U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS527854A (en) * | 1975-07-09 | 1977-01-21 | Nippon Steel Corp | Plug for drawing metal pipe |
| JPS5226728U (en) * | 1975-08-15 | 1977-02-24 | ||
| JPS5312732A (en) * | 1976-07-23 | 1978-02-04 | Eutectic Corp | Safety doubleeinjector spray device |
| JPS5475126A (en) * | 1977-11-25 | 1979-06-15 | Hasegawa Chiyuukoushiyo Kk | Method of joining bar steel for deformed bar concrete |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0361024U (en) * | 1989-10-20 | 1991-06-14 | ||
| JPH0421626U (en) * | 1990-06-13 | 1992-02-24 | ||
| EP0547319A1 (en) * | 1991-12-19 | 1993-06-23 | Splice Sleeve Japan, Ltd. | Mortar grouting type connector for reinforcing bars |
| US5392582A (en) * | 1991-12-19 | 1995-02-28 | Splice Sleeve Japan, Ltd. | Mortar grouting type connector for reinforcing bars |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0784778B2 (en) | 1995-09-13 |
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