JPH11201371A - Screw protecting protector for pipe joint - Google Patents
Screw protecting protector for pipe jointInfo
- Publication number
- JPH11201371A JPH11201371A JP10004988A JP498898A JPH11201371A JP H11201371 A JPH11201371 A JP H11201371A JP 10004988 A JP10004988 A JP 10004988A JP 498898 A JP498898 A JP 498898A JP H11201371 A JPH11201371 A JP H11201371A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- protector
- cap
- pin
- box
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/005—Protection of pipes or objects of similar shape against external or internal damage or wear specially adapted for the ends of pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Buffer Packaging (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、管を接続する継
手として、管端に形成されるピンの外ネジおよびボック
スの内ネジが、搬送途中に損傷されるのを防止するため
に、管端に装着する管継手のネジ保護用プロテクタに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for connecting a pipe to prevent the external thread of a pin formed at the pipe end and the internal thread of a box from being damaged during transportation. TECHNICAL FIELD The present invention relates to a protector for protecting a thread of a pipe fitting to be mounted on a pipe joint.
【０００２】[0002]
【従来の技術】管を接続する方法としては、継手として
１本１本の管の長さ方向一端部に外ネジを有するピン
を、他端部には内ネジを有するボックスを設け、ピンの
外ネジを他の管のボックスの内ネジに螺合させて接続す
る方法がある。2. Description of the Related Art As a method for connecting pipes, a pin having an external thread is provided at one end in the longitudinal direction of each pipe as a joint, and a box having an internal thread is provided at the other end. There is a method of connecting an external screw by screwing it into an internal screw of a box of another tube.
【０００３】このようにピンとボックスが接合されてい
る状態であれば、管継手のピンの外ネジやボックスの内
ネジは外部からの衝撃によって損傷されることはない。[0003] When the pin and the box are joined in this manner, the external thread of the pin of the pipe joint and the internal thread of the box are not damaged by an external impact.
【０００４】しかしながら、管を搬送するときには、管
は１本１本接続されない状態で搬送されるので、搬送途
中でこれらのネジが損傷される恐れがある。そして、こ
れらのネジが損傷されると、管を接続したときのシ−ル
性が低下するので、このようなネジ部はプロテクタによ
り保護するようにしている。However, when the pipes are transported, since the pipes are transported without being connected one by one, these screws may be damaged during the transport. If these screws are damaged, the sealing performance when connecting the pipes is reduced. Therefore, such a screw portion is protected by a protector.
【０００５】従来のこれらの管継手のネジ部を保護する
プロテクタには、図３に示すように、鋼材、プラスチッ
クまたは鋼材とプラスチックの複合体からなる一端に端
板２１を有する円筒状の材料２２の内周面に、管２３の
ピン２４の外ネジ２５に螺合する内ネジ２６を形成した
プロテクタを使用したり、図４に示すように、円筒状の
材料３１の外周面にカップリング３２のボックス３３の
内ネジ３４に螺合する外ネジ３５を形成したプロテクタ
を使用する。そして、このようなプロテクタをピン２４
またはボックス３３のネジ部２５または３４に螺合させ
て、ネジ部を保護するようにしている。As shown in FIG. 3, a conventional protector for protecting the thread portion of these pipe joints is a cylindrical material 22 having an end plate 21 at one end made of steel, plastic or a composite of steel and plastic. A protector in which an inner thread 26 screwed to an outer thread 25 of a pin 24 of a tube 23 is used on the inner peripheral face of the pipe 23, or a coupling 32 is attached to an outer peripheral face of a cylindrical material 31 as shown in FIG. A protector in which an outer screw 35 formed to be screwed to the inner screw 34 of the box 33 is used. Then, connect such a protector to the pin 24.
Alternatively, the screw portion is screwed to the screw portion 25 or 34 of the box 33 to protect the screw portion.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上述し
た従来の管継手のネジ保護用プロテクタは、ピンやボッ
クスのネジと同じような加工精度をもってネジ切り加工
する必要がある上に、プロテクタ用の素材を特別に製造
しなければならないので、プロテクタの加工費が高くな
るという問題点がある。However, the above-mentioned conventional protector for protecting a screw of a pipe joint needs to be threaded with the same processing accuracy as that of a screw of a pin or a box, and also requires a material for the protector. Has to be manufactured specially, which increases the processing cost of the protector.
【０００７】この発明は、従来技術の上述したような問
題点を解消するためになされたものであり、ネジ切り加
工を必要とせず、材料費も安くてすむ管継手のネジ保護
用プロテクタを提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and provides a thread protector for a pipe joint which does not require a thread cutting process and has a low material cost. It is intended to be.
【０００８】[0008]
【課題を解決するための手段】この発明に係る管継手の
ネジ保護用プロテクタは、管の一端にピンを、他端にボ
ックスを設け、前記ピンの外ネジを他の管に設けたボッ
クスの内ネジに螺合させ、前記ボックスの内ネジを他の
管に設けたピンの外ネジに螺合させてなる管継手の外ネ
ジ保護用プロテクタであって、外ネジとほぼ同じテ−パ
を有し、管長手方向の各位置における内径が外ネジの管
長手方向各位置における外径よりも小さい円筒状の発泡
樹脂の内側キャップと、この発泡樹脂の内側キャップの
外側に密着させた円筒状の樹脂不織布の外側キャップ
と、内側キャップおよび外側キャップが外ネジから抜け
出さないようにこの樹脂不織布の外側キャップの外側に
巻き付ける複数本の収縮バンドとから構成されるもので
ある。According to the present invention, there is provided a thread protector for a pipe joint according to the present invention, wherein a pin is provided at one end of a pipe, a box is provided at the other end, and an external thread of the pin is provided at another pipe. An outer thread protection protector for a pipe joint, which is screwed to an inner screw, and an inner screw of the box is screwed to an outer screw of a pin provided in another pipe. A cylindrical inner cap made of a foamed resin having an inner diameter smaller at each position in the pipe longitudinal direction than the outer diameter of the outer thread at each position in the pipe longitudinal direction, and a cylindrical shape in close contact with the outer cap of the foamed resin inner cap. And a plurality of shrink bands wrapped around the outer cap of the resin nonwoven fabric so that the inner cap and the outer cap do not come off from the outer screw.
【０００９】ピンの外ネジにこの管継手のネジ保護用プ
ロテクタを装着するときには、管の軸線方向に向けてこ
のネジ保護用プロテクタを押し込む。ネジ保護用プロテ
クタのピンの外ネジに接触する内側キャップは、発泡樹
脂であり、かつ内径がピンの外ネジの外径よりも小さい
ので、内側キャップは圧縮変形あるいは一部破損される
状態で押し込まれ、ピンの外ネジの外周面と内側キャッ
プの内周面との間には、強い圧縮力が作用し、ネジ保護
用プロテクタが管から容易に外れることはない。そし
て、内側キャップがピンの外ネジの外周面に密着してい
るので、外ネジに塗布したグリ−スが洩れ出ることもな
く、外ネジが錆びることはない。When the thread protector of the pipe joint is mounted on the external thread of the pin, the thread protector is pushed in the axial direction of the pipe. The inner cap that comes into contact with the outer thread of the pin of the screw protection protector is made of foam resin, and the inner diameter is smaller than the outer diameter of the outer thread of the pin. A strong compressive force acts between the outer peripheral surface of the outer screw of the pin and the inner peripheral surface of the inner cap, so that the screw protector does not easily come off the tube. Since the inner cap is in close contact with the outer peripheral surface of the outer screw of the pin, the grease applied to the outer screw does not leak out and the outer screw does not rust.
【００１０】また、外側キャップは樹脂不織布でできて
いるので、外側からの衝撃を吸収することができ、ピン
の外ネジが破損されることはない。さらには、収縮バン
ドにより内側キャップおよび外側キャップを締めつけて
いるので、ネジ保護用プロテクタの装着時に、装着を容
易に行うことができる。[0010] Further, since the outer cap is made of a resin nonwoven fabric, it can absorb an impact from the outside, and the outer screw of the pin is not damaged. Further, since the inner cap and the outer cap are tightened by the shrink band, the mounting can be easily performed when the screw protector is mounted.
【００１１】すなわち、収縮バンドに水に浸すことによ
り収縮するタイプの収縮バンドを用いると、内側キャッ
プおよび外側キャップをピンの外ネジに装着した後、収
縮バンドを外側キャップに巻付け、収縮バンドに水をか
けるだけで収縮バンドが収縮し、大きな締付力が発生す
るので、ネジ保護用プロテクタがピンから外れることは
ない。That is, if a shrink band of a type that shrinks by immersing it in water is used, the inner cap and the outer cap are attached to the outer screw of the pin, and then the shrink band is wound around the outer cap, and The shrinking band shrinks only by applying water, and a large tightening force is generated, so that the screw protector does not come off from the pin.
【００１２】なお、収縮バンドは通常市販されているも
のでよい。また、管の一端にピンを、他端にボックスを
設け、前記ピンの外ネジを他の管に設けたボックスの内
ネジに螺合させ、前記ボックスの内ネジを他の管に設け
たピンの外ネジに螺合させてなる管継手の内ネジ保護用
プロテクタであって、内ネジとほぼ同じテ−パを有し、
管長手方向の各位置における外径が内ネジの管長手方向
各位置における内径よりも大きい円筒部と、この円筒部
の最大外径部に接続され、管端面に接触するつば部を有
する発泡樹脂のキャップから構成されるものである。The shrinkable band may be a commercially available one. In addition, a pin is provided at one end of the tube, a box is provided at the other end, an external screw of the pin is screwed into an internal screw of a box provided on another tube, and a pin provided with the internal screw of the box on another tube. An inner screw protection protector for a pipe fitting screwed to the outer screw of the above, having substantially the same taper as the inner screw,
A foamed resin having a cylindrical portion whose outer diameter at each position in the pipe longitudinal direction is larger than the inner diameter at each position in the pipe longitudinal direction of the internal thread, and a flange portion connected to the largest outer diameter portion of the cylindrical portion and in contact with the pipe end face It is composed of a cap.
【００１３】この内ネジ保護用プロテクタも、ボックス
の内ネジに接触する円筒部が、発泡樹脂であり、かつ外
径がボックスの内ネジの内径よりも大きいので、円筒部
は圧縮変形あるいは一部破損される状態で押し込まれ、
ボックスの内ネジの内周面と円筒部外周面との間には、
強い圧縮力が作用し、ネジ保護用プロテクタがボックス
から外れることはない。また、つば部により管端面を保
護することもできるので、搬送中に管のシ−ル性や曲げ
剛性が損なわれるような損傷は発生しない。[0013] In this protector for protecting the inner screw, the cylindrical portion which contacts the inner screw of the box is made of foamed resin and the outer diameter is larger than the inner diameter of the inner screw of the box. Pushed in the state of being damaged,
Between the inner peripheral surface of the inner screw of the box and the outer peripheral surface of the cylindrical part,
A strong compressive force acts so that the screw protector does not come off the box. Further, since the end face of the pipe can be protected by the collar portion, damage such as deterioration in the sealing property and bending rigidity of the pipe during transportation does not occur.
【００１４】なお、内ネジ保護用プロテクタの場合に
は、外部からの衝撃が加えられることは少ないので、外
ネジ保護用プロテクタの場合のように、衝撃防止用の樹
脂不織布は必要ない。In the case of the protector for protecting the inner screw, the impact from the outside is rarely applied. Therefore, unlike the protector for protecting the outer screw, a resin nonwoven fabric for preventing the shock is not required.
【００１５】また、内ネジ保護用プロテクタの適用は、
ボックスが管端に直接設けられたものであってもよい
し、管端に設けたピンに接続された短管継手のボックス
でもよい。[0015] The application of the protector for protecting the inner screw is as follows.
The box may be provided directly at the pipe end, or may be a short pipe joint box connected to a pin provided at the pipe end.
【００１６】[0016]
【発明の実施の形態】以下、添付図面を参照して本発明
の実施の形態について説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１７】図１はこの発明の第一の実施の形態の管継
手のネジ保護用プロテクタの断面図である。この管継手
のネジ保護用プロテクタは、油井管２３の一端に設けた
ピン２４の外ネジ２５保護用プロテクタであり、外ネジ
２５とほぼ同じテ−パを有し、油井管長手方向の各位置
における内径が外ネジ２５の油井管長手方向各位置にお
ける外径よりも小さい円筒状の発泡ポリエチレンの内側
キャップ１と、この発泡ポリエチレンの内側キャップ１
の外側に密着させた円筒状の不織布ポリエチレンの外側
キャップ２と、内側キャップ１および外側キャップ２が
外ネジ２５から抜け出さないようにこの不織布ポリエチ
レンの外側キャップ２の外側に巻き付ける複数本の収縮
バンド３とから構成されるものである。FIG. 1 is a sectional view of a thread protector of a pipe joint according to a first embodiment of the present invention. The thread protector of this pipe joint is a protector for protecting the external thread 25 of the pin 24 provided at one end of the oil country tubular good 23. Inner cap 1 of cylindrical foamed polyethylene, the inner diameter of which is smaller than the outer diameter of the external screw 25 at each position in the longitudinal direction of the oil country tubular goods, and the inner cap 1 of this foamed polyethylene.
And a plurality of shrink bands 3 wrapped around the outside of the non-woven polyethylene outer cap 2 so that the inner cap 1 and the outer cap 2 do not come off the outer screw 25. It is composed of
【００１８】ピン２４の外ネジ２５にこのネジ保護用プ
ロテクタを装着するときには、油井管の軸線方向に向け
てこのネジ保護用プロテクタを押し込む。ネジ保護用プ
ロテクタのピン２４の外ネジ２５に接触する内側キャッ
プ１は、発泡ポリエチレン製であり、かつ内径がピン２
４の外ネジ２５の外径よりも小さいので、内側キャップ
１は圧縮変形あるいは一部破損される状態で押し込ま
れ、ピン２４の外ネジ２５の外周面と内側キャップ１の
内周面との間には、強い圧縮力が作用し、ネジ保護用プ
ロテクタが油井管から外れることはない。また、外側キ
ャップ２は不織布ポリエチレンでできているので、外側
からの衝撃を吸収することができ、ピン２４の外ネジ２
５が破損されることはない。When the screw protector is mounted on the external thread 25 of the pin 24, the screw protector is pushed in the axial direction of the oil country tubular good. The inner cap 1 which is in contact with the outer thread 25 of the pin 24 of the screw protection protector is made of foamed polyethylene and has an inner diameter of the pin 2.
4 is smaller than the outer diameter of the outer screw 25, so that the inner cap 1 is pushed in in a state of being compressed or partially damaged, and between the outer peripheral surface of the outer screw 25 of the pin 24 and the inner peripheral surface of the inner cap 1. , A strong compressive force acts, and the screw protector does not come off the oil country tubular good. Further, since the outer cap 2 is made of non-woven polyethylene, the outer cap 2 can absorb an impact from the outside, and the outer screw 2 of the pin 24 can be absorbed.
5 is not damaged.
【００１９】さらには、水に浸すことにより収縮するタ
イプの収縮バンド３により、内側キャップ１および外側
キャップ２を締めつけているので、ネジ保護用プロテク
タの装着時に、装着を容易に行うことができる。なお、
図１において、符号４はピン２４の端面を保護するため
のつば付きのキャップである。Furthermore, since the inner cap 1 and the outer cap 2 are tightened by the shrink band 3 of a type that shrinks when immersed in water, the mounting can be easily performed when the screw protector is mounted. In addition,
In FIG. 1, reference numeral 4 denotes a cap with a flange for protecting the end face of the pin 24.
【００２０】図２はこの発明の第二の実施の形態の管継
手のネジ保護用プロテクタの断面図である。この管継手
のネジ保護用プロテクタは、油井管の一端に接続したカ
ップリング３２の一端部のボックス３３の内ネジ３４保
護用プロテクタであり、内ネジ３４とほぼ同じテ−パを
有し、カップリング３２の長手方向各位置における外径
が内ネジ３４のカップリング３２の長手方向各位置にお
ける内径よりも大きい円筒部１１と、この円筒部１１の
最大外径部に接続され、カップリング３２の端面３２ａ
に接触するつば部１２を有する発泡ポリエチレンのキャ
ップから構成されるものである。FIG. 2 is a sectional view of a thread protector of a pipe joint according to a second embodiment of the present invention. The protector for protecting the screw of this pipe joint is a protector for protecting the inner screw 34 of the box 33 at one end of the coupling 32 connected to one end of the oil country tubular good. The outer diameter at each position in the longitudinal direction of the ring 32 is larger than the inner diameter of the inner screw 34 at each position in the longitudinal direction of the coupling 32, and the cylindrical portion 11 is connected to the largest outer diameter portion of the cylindrical portion 11. End face 32a
Is formed of a foamed polyethylene cap having a flange portion 12 that comes into contact with the cap.
【００２１】この内ネジ保護用プロテクタも、ボックス
３３の内ネジ３４に接触する円筒部１１が、発泡ポリエ
チレン製であり、かつ外径がボックス３３の内ネジ３４
の内径よりも大きいので、円筒部１１は圧縮変形あるい
は一部破損される状態で押し込まれ、ボックス３３の内
ネジ３４の内周面と円筒部１１の外周面との間には、強
い圧縮力が作用し、ネジ保護用プロテクタが油井管から
外れることはない。In this protector for protecting the inner screw, the cylindrical portion 11 which comes into contact with the inner screw 34 of the box 33 is made of foamed polyethylene and has an outer diameter of the inner screw 34 of the box 33.
Is larger than the inner diameter of the cylindrical portion 11, the cylindrical portion 11 is pushed in a state of being compressed and deformed or partially damaged, and a strong compressive force is applied between the inner peripheral surface of the inner screw 34 of the box 33 and the outer peripheral surface of the cylindrical portion 11. The screw protector does not come off the OCTG.
【００２２】また、つば部１２によりカップリング３２
の端面３２ａを保護することもできるので、搬送中に油
井管のシ−ル性が損なわれるような損傷は発生しない。
なお、本発明の外ネジ保護用プロテクタは、管継手が管
の両端に設けた外ネジを有するピンの場合にも適用され
ることは当然である。Further, the coupling 32 is formed by the collar 12.
Since the end face 32a of the oil well pipe can be protected, no damage such as deterioration of the sealing property of the oil country tubular goods occurs during transportation.
It should be noted that the protector for protecting the external thread of the present invention is naturally applied to the case where the pipe joint is a pin having an external thread provided at both ends of the pipe.
【００２３】[0023]
【発明の効果】この発明により、ネジ切り加工を必要と
せず、材料費も安くてすむ管継手のネジ保護用プロテク
タを提供することができる。According to the present invention, it is possible to provide a thread protector for a pipe joint which does not require a thread cutting process and has a low material cost.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の第一の実施の形態の管継手のネジ保
護用プロテクタの断面図である。FIG. 1 is a sectional view of a thread protector of a pipe joint according to a first embodiment of the present invention.
【図２】この発明の第二の実施の形態の管継手のネジ保
護用プロテクタの断面図である。FIG. 2 is a sectional view of a thread protector of a pipe joint according to a second embodiment of the present invention;
【図３】従来の管継手の外ネジ保護用プロテクタの断面
図である。FIG. 3 is a sectional view of a conventional protector for protecting an external thread of a pipe joint.
【図４】従来の管継手の内ネジ保護用プロテクタの断面
図である。FIG. 4 is a cross-sectional view of a protector for protecting an internal thread of a conventional pipe joint.
１ 内側キャップ ２ 外側キャップ ３ 収縮バンド １１ 円筒部 １２ つば部 DESCRIPTION OF SYMBOLS 1 Inner cap 2 Outer cap 3 Shrink band 11 Cylindrical part 12 Collar part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉田 恒夫 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tsuneo Yoshida 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Inside Nihon Kokan Co., Ltd.
Claims (2)
け、前記ピンの外ネジを他の管に設けたボックスの内ネ
ジに螺合させ、前記ボックスの内ネジを他の管に設けた
ピンの外ネジに螺合させてなる管継手の外ネジ保護用プ
ロテクタであって、外ネジとほぼ同じテ−パを有し、管
長手方向の各位置における内径が外ネジの管長手方向各
位置における外径よりも小さい円筒状の発泡樹脂の内側
キャップと、この発泡樹脂の内側キャップの外側に密着
させた円筒状の樹脂不織布の外側キャップと、内側キャ
ップおよび外側キャップが外ネジから抜け出さないよう
にこの樹脂不織布の外側キャップの外側に巻き付ける複
数本の収縮バンドとから構成されることを特徴とする管
継手の外ネジ保護用プロテクタ。1. A pin is provided at one end of a tube and a box is provided at the other end. An external screw of the pin is screwed into an internal screw of a box provided in another tube, and the internal screw of the box is connected to another tube. A protector for protecting an external thread of a pipe joint, which is screwed to an external thread of a provided pin, has substantially the same taper as the external thread, and has an inner diameter at each position in the longitudinal direction of the external thread of the external thread. The inner cap of the cylindrical foam resin smaller than the outer diameter at each position in the direction, the outer cap of the cylindrical resin non-woven fabric adhered to the outer side of the inner cap of the foam resin, the inner cap and the outer cap from the outer screw A protector for protecting an external thread of a pipe joint, comprising: a plurality of shrink bands which are wound around an outer cap of the resin nonwoven fabric so as not to come off.
け、前記ピンの外ネジを他の管に設けたボックスの内ネ
ジに螺合させ、前記ボックスの内ネジを他の管に設けた
ピンの外ネジに螺合させてなる管継手の内ネジ保護用プ
ロテクタであって、内ネジとほぼ同じテ−パを有し、管
長手方向の各位置における外径が内ネジの管長手方向各
位置における内径よりも大きい円筒部と、この円筒部の
最大外径部に接続され、管端面に接触するつば部を有す
る発泡樹脂のキャップから構成されることを特徴とする
管継手の内ネジ保護用プロテクタ。2. A pin is provided at one end of a tube, and a box is provided at the other end. An external screw of the pin is screwed into an internal screw of a box provided in another tube, and the internal screw of the box is connected to another tube. An inner screw protection protector for a pipe joint which is screwed to an outer screw of a provided pin, the protector having substantially the same taper as the inner screw, and having an outer diameter at each position in the pipe longitudinal direction having a pipe length of the inner screw. A pipe joint characterized by comprising a cylindrical portion larger than the inner diameter at each position in the hand direction, and a foamed resin cap having a flange portion connected to the maximum outer diameter portion of the cylindrical portion and in contact with the pipe end face. Protector for internal screw protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00498898A JP3303759B2 (en) | 1998-01-13 | 1998-01-13 | External thread protection protector for fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00498898A JP3303759B2 (en) | 1998-01-13 | 1998-01-13 | External thread protection protector for fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11201371A true JPH11201371A (en) | 1999-07-30 |
| JP3303759B2 JP3303759B2 (en) | 2002-07-22 |
Family
ID=11599001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00498898A Expired - Fee Related JP3303759B2 (en) | 1998-01-13 | 1998-01-13 | External thread protection protector for fittings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3303759B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7469721B2 (en) | 2004-08-25 | 2008-12-30 | Sumitomo Metal Industries, Ltd. | Thread protector for a pipe |
| JP2009073551A (en) * | 2007-09-25 | 2009-04-09 | Japan Crown Cork Co Ltd | Cap for joint protection |
| WO2011078658A1 (en) * | 2009-12-21 | 2011-06-30 | Pipe-Proteq B.V. | Wellbore pipe protection device |
-
1998
- 1998-01-13 JP JP00498898A patent/JP3303759B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7469721B2 (en) | 2004-08-25 | 2008-12-30 | Sumitomo Metal Industries, Ltd. | Thread protector for a pipe |
| JP2009073551A (en) * | 2007-09-25 | 2009-04-09 | Japan Crown Cork Co Ltd | Cap for joint protection |
| WO2011078658A1 (en) * | 2009-12-21 | 2011-06-30 | Pipe-Proteq B.V. | Wellbore pipe protection device |
| US8881772B2 (en) | 2009-12-21 | 2014-11-11 | Pipe-Proteq B.V. | Wellbore pipe protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3303759B2 (en) | 2002-07-22 |
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