JPH067120Y2 - Lock bolt hook - Google Patents
Lock bolt hookInfo
- Publication number
- JPH067120Y2 JPH067120Y2 JP1989132931U JP13293189U JPH067120Y2 JP H067120 Y2 JPH067120 Y2 JP H067120Y2 JP 1989132931 U JP1989132931 U JP 1989132931U JP 13293189 U JP13293189 U JP 13293189U JP H067120 Y2 JPH067120 Y2 JP H067120Y2
- Authority
- JP
- Japan
- Prior art keywords
- lock bolt
- opening
- main body
- hook
- cylindrical
- 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
- 238000003892 spreading Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
- F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
- Dowels (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、ナトム工法等によりトンネル掘削する際に使
用するロックボルトの掛止具に関するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hook for a lock bolt used when excavating a tunnel by the NATM method or the like.
従来、ナトム工法等によりトンネル掘削を行う場合、掘
削されたトンネル内から地山に向けて放射状に多数の孔
を穿ち、この孔内にロックボルトを挿入し、この挿入し
たロックボルトを、ロックボルトと孔との間の隙間にモ
ルタル等を充填して固定している。Conventionally, when performing tunnel excavation by the NATOM method, etc., a large number of holes are radially drilled from inside the excavated tunnel toward the natural ground, and a lock bolt is inserted into this hole. The gap between the hole and the hole is filled with mortar and fixed.
この工法において、ロックボルトを上向きの孔内に挿入
する際ロックボルトが孔内から落下する問題、および、
ロックボルトが孔内中心部にセット出来ないという問題
から、これらを改善して、ロックボルトの掛止具（以下
掛止具と称す。）が種々提案されている。In this method, when inserting the lock bolt into the upward hole, the problem that the lock bolt falls from the hole, and
Due to the problem that the lock bolt cannot be set at the center of the hole, various lock bolt hooks (hereinafter referred to as hooks) have been proposed to improve these problems.
例えば、実開昭58-134499号公報には、スリットを有す
る円筒状本体と、この円筒状本体の一端に一体的に形成
されその先端が放射状に広がる複数個の掛止片とからな
る掛止具が示されている。For example, Japanese Utility Model Application Laid-Open No. 58-134499 discloses a hook consisting of a cylindrical main body having a slit and a plurality of locking pieces integrally formed at one end of the cylindrical main body, the tip of which extends radially. The ingredients are shown.
また、上記形状とほぼ同形状の第７図に示す掛止具が知
られている。この掛止具21は、円筒状本体22に形成され
たスリット23の左右両端部24,25の中央に、外方に膨出
させた所定長さの膨出部26,27を有し、且つこの膨出部2
6,27の中央、スリット23を形成する左右両辺に跨がって
成形された円孔28,29を有する形状のものである。尚、3
0は、円筒状本体22の一端に一体的に形成されその先端
が放射状に広がる複数個の掛止片である。Further, a hooking tool shown in FIG. 7 which is substantially the same in shape as the above is known. The latch 21 has bulging portions 26, 27 of a predetermined length bulged outward at the center of the left and right ends 24, 25 of the slit 23 formed in the cylindrical body 22, and This bulge 2
It has a shape having circular holes 28, 29 formed over the center of 6, 27 and both left and right sides forming the slit 23. Incidentally, 3
Reference numeral 0 denotes a plurality of hook pieces integrally formed at one end of the cylindrical main body 22 and having a tip end thereof radially spreading.
これら円筒状本体にスリットを有する掛止具は、掛止片
を下にして円筒状本体の内径より大径の外径を有するロ
ックボルトにスリットを押開いて挿入させ、固定位置ま
で移動したところでスリットの押開きを開放することに
より、ロックボルトに嵌合させて使用され、そしてこの
ロックボルトがトンネル内に穿った孔に打設された後、
前記掛止片が孔の内周面に食い込み、ロックボルトが孔
から落下するのを防止すると共に、ロックボルトを孔内
中心部にセットする機能を有する。Hooks having slits in these cylindrical bodies are inserted into a lock bolt having an outer diameter larger than the inner diameter of the cylindrical body by pressing the slits downward and inserting it into the locking position. By opening the opening of the slit, it is used by fitting it to the lock bolt, and after this lock bolt is driven into the hole drilled in the tunnel,
The hook piece has a function of cutting into the inner peripheral surface of the hole, preventing the lock bolt from dropping from the hole, and having a function of setting the lock bolt at the center of the hole.
ところで、上述した円筒状本体にスリットを有する掛止
具において、この掛止具をロックボルトに挿嵌させる時
の掛止具の移動および挿嵌後の位置調整のための掛止具
の移動を、掛止具のスリットを円筒状本体のバネ力に抗
して押開いて行うが、この移動作業の際、掛止具のスリ
ットの左右両辺がほぼ平行辺で構成されているため、平
行辺を左右方向に押開くのに軸用スナップリングプライ
ヤーを使用するなど、この種の現場では従来あまり使用
されていなかった工具を使用することから、ある程度の
熟練を要し作業製が悪かった。また前記掛止具のロック
ボルトへの挿嵌およびロックボルト上での移動作業をト
ンネル内で行う場合は、長いロックボルトと掛止具を別
々に運び入れることができ運搬し易い利点を有する反
面、暗いために作業がし難いという問題があり、逆に、
トンネル外で行う場合は、作業はし易くなるが、掛止具
がロックボルトへ挿嵌されているため運搬がし難いと言
う問題がある。By the way, in the above-described hook having a slit in the cylindrical body, movement of the hook when inserting the hook into the lock bolt and movement of the hook for position adjustment after the insertion are performed. , The slit of the latch is pushed open against the spring force of the cylindrical body, but at the time of this moving work, the left and right sides of the slit of the latch are almost parallel sides, so the parallel sides Since it uses tools that have not been used so far in this kind of field, such as using a shaft snap ring plier to push open in the left and right directions, it required some skill and was poor at work. In addition, when the fitting of the hooking device to the lock bolt and the moving work on the lock bolt are carried out in the tunnel, the long lock bolt and the hooking device can be carried separately, but they are easy to carry. There is a problem that it is difficult to work because it is dark, and conversely,
When the work is performed outside the tunnel, the work is easy, but there is a problem that it is difficult to carry the work because the hook is inserted into the lock bolt.
本考案は、上記の問題点に鑑み、特別の工具を使用する
ことなく、ロックボルトの所望位置に人力でもって着脱
し得るロックボルトの掛止具を提供することを目的とす
るものである。The present invention has been made in view of the above problems, and an object of the present invention is to provide a lock bolt hooking device that can be manually attached and detached to and from a desired position of the lock bolt without using a special tool.
上記目的を達成するため、本考案のロックボルトの掛止
具は、開口部を有する円筒状本体と、この円筒状本体の
一端に一体的に形成されその先端が放射状に広がる複数
個の掛止片とからなるロックボルトの掛止具であって、
前記円筒状本体の開口部に対向する部位に所定長さの突
出部が周方向に設けられてなるものである。In order to achieve the above object, a locking bolt locking device according to the present invention comprises a cylindrical body having an opening, and a plurality of locking members integrally formed at one end of the cylindrical body and having its tip radially spread. A lock bolt hook consisting of one piece,
A projecting portion having a predetermined length is provided in a circumferential direction at a portion facing the opening of the cylindrical main body.
〔作用〕 上記構成の掛止具は、ロックボルトの掛止具の固定位置
に掛止具の開口部を当てて、側方から手等で押し入れて
装着するものであるから、特別の工具を使用することな
く、長いロックボルトに装着でき、また装着位置が悪い
場合は、円筒状本体の開口部に対向する部位の掛止片側
から引き上げることによりロックボルトから引き離せ、
適切な位置に再装着することができ、従って、薄暗いト
ンネル内でも装着が容易に行えるので、掛止具とロック
ボルトを別々にトンネル内へ運び入れ、トンネル内の現
場で装着作業を行うことができる。しかも、円筒状本体
の開口部に対向する部位には所定長さの突出部が周方向
に設けられてあるので、この突出部によりバネ力が保持
され、ロックボルトへの把持力が増し、ロックボルトの
所定位置からのずれが防止される。[Operation] The hook having the above-described structure is to be attached by pressing the opening of the hook at the fixing position of the lock bolt, and pushing it in from the side with a hand or the like. It can be attached to a long lock bolt without using it, and if the attachment position is poor, pull it from the locking piece side of the part facing the opening of the cylindrical body to separate it from the lock bolt,
Since it can be re-installed in the proper position, and therefore can be easily installed even in a dark tunnel, it is possible to carry the hook and the lock bolt separately into the tunnel and perform the installation work on site in the tunnel. it can. Moreover, since a protrusion of a predetermined length is provided in the circumferential direction at a portion facing the opening of the cylindrical body, the spring force is retained by this protrusion, the gripping force on the lock bolt increases, and the lock The displacement of the bolt from the predetermined position is prevented.
そして、上記掛止具の、円筒状本体の開口部と所定長さ
の突出部との間の上下方向中間部位に内方向突出部を設
けるとよく、これにより、この内方向突出部がロックボ
ルトの表面の凹部に入るため、ロックボルトの所定位置
からのずれがより確実に防止できる。An inward protruding portion may be provided at an intermediate portion in the up-down direction between the opening of the cylindrical main body and the protruding portion of the predetermined length of the hooking device. Since it enters into the concave portion of the surface of the, it is possible to more reliably prevent the lock bolt from being displaced from the predetermined position.
また、上記掛止具において、円筒状本体の開口部の開口
間隔を、円筒状本体の内径の0,6〜0,85倍にすることが
よく、これにより、掛止具のロックボルトへの装着が効
率的に行える。。もし、開口間隔が円筒状本体の内径の
0,6倍未満であれば、開口間隔が狭いため手で押し込む
ことが難しく、確実にハンマ等で叩き入れなければなら
なくなり、また0,85倍超では、手で押し込み易くなる反
面、円筒状本体がロックボルトを包み込む量が少なくな
りバネ力とも関係して位置ずれし易くなる。Further, in the above-mentioned latch, the opening interval of the openings of the cylindrical main body may be 0,6 to 0,85 times the inner diameter of the cylindrical main body. Can be installed efficiently. . If the opening spacing is
If it is less than 0.6 times, it is difficult to push it in by hand because the opening interval is narrow, and you have to hit it firmly with a hammer, and if it exceeds 085 times, it is easy to push it by hand, but it is cylindrical. The amount that the main body wraps around the lock bolt is reduced, and the position is likely to shift due to the spring force.
以下、本考案に係わる実施例を図面に基づいて説明す
る。An embodiment according to the present invention will be described below with reference to the drawings.
第１図はロックボルトの掛止具の正面図、第２図は、第
１図の矢視Ａからの側面図である。FIG. 1 is a front view of a locking tool for a lock bolt, and FIG. 2 is a side view from the arrow A of FIG.
１は、掛止具であって、薄鋼板を第３図に示す展開形状
に打ち抜き、これを曲げ加工して製造したものである。Reference numeral 1 denotes a hook, which is manufactured by punching a thin steel plate into a developed shape shown in FIG. 3 and bending it.
２は、円筒状本体であって、この円筒状本体２の開口部
３の左右両端部４，５には外側に反転加工された鍔６，
７が、また開口部３に対向する部位８には膨出加工され
た突出部９がそれぞれ形成されている。Reference numeral 2 denotes a cylindrical main body, and the left and right end portions 4, 5 of the opening 3 of the cylindrical main body 2 have collars 6, which are reversely machined outward.
7 and a bulging projection 9 is formed at a portion 8 facing the opening 3.
また、円筒状本体２の下端には、ほぼ等間隔に一体的に
形成された三枚の同形状の掛止片10,11,12を有する。Further, at the lower end of the cylindrical main body 2, there are three hook pieces 10, 11, 12 of the same shape integrally formed at substantially equal intervals.
上記構成の掛止具１をロックボルト1a（第１図に二点鎖
線で示す）に押し嵌めるには、掛止具１の開口部３を第
１図に示すようにロックボルト1aに押し当て、掛止具１
の鍔6,7を案内にして開口部３を円筒状本体２のバネ力
に抗して左右に押し開きながらロックボルト1aに押し嵌
める。また押し嵌めた位置が不適切で位置を変える場合
は、開口部３に対向する部位８側の下端（掛止片11が着
いている）側から人力あるいはドライバ等で引き離し、
上記要領で適切な位置に再装着できる。In order to press-fit the latch 1 having the above-mentioned configuration into the lock bolt 1a (shown by a chain double-dashed line in FIG. 1), press the opening 3 of the latch 1 against the lock bolt 1a as shown in FIG. , Hook 1
Using the collars 6 and 7 as guides, the opening 3 is pushed against the spring force of the cylindrical main body 2 to the left and right, and is pushed and fitted into the lock bolt 1a. In addition, when the position where the push-fit is performed is inappropriate and the position is changed, the position 8 side facing the opening 3 is separated from the lower end (where the hooking piece 11 is attached) by human power or a driver.
It can be reattached to the appropriate position as described above.
尚、円筒状本体１の開口部３の開口間隔Ｌが16mm、円筒
状本体１の内径Ｄが25mm（Ｌ／Ｄ＝0,64）からなる掛止
具１を用い、外径30mmのロックボルト1aに押し嵌めたと
ころ、着脱が上記の如く行え、しかもバネ力によってロ
ックボルト1aを把持し簡単に位置ずれすることも無かっ
た。A lock bolt having an outer diameter of 30 mm is used by using the hook 1 having an opening interval L of the openings 3 of the cylindrical main body 1 of 16 mm and an inner diameter D of the cylindrical main body 1 of 25 mm (L / D = 0,64). When it was pressed into the 1a, it could be attached and detached as described above, and the spring force did not cause the lock bolt 1a to be easily gripped and displaced.
第４図に示す素板は、特に大径のロックボルト1aに使用
して好適な掛止具１のためのもので、掛止具１の開口部
３が大きく開いても、掛止片10,11,12の先端がほぼ等間
隔になるように工夫したものである。The base plate shown in FIG. 4 is for a hook 1 suitable for use especially in a large-diameter lock bolt 1a. Even if the opening 3 of the hook 1 is wide open, the hook piece 10 It was devised so that the tips of 11, 11 and 12 would be approximately evenly spaced.
第５図に示す別態様のロックボルトの掛止具１は、円筒
状本体２の開口部３と突出部９との間の上下方向中間部
位に内方向突出部13を設けたもので、その他の構成は、
第１図に示すものと同じである。そしてこの掛止具１に
よれば、ロックボルト1aに装着した時、内方向突出部13
がロックボルト1aの表面の凹部に入るため、ロックボル
ト1aの軸方向へのずれが確実に防止でき、トンネル内で
の孔内へのロックボルト1aの挿入作業が、よりし易くな
る。A lock bolt hooking device 1 according to another embodiment shown in FIG. 5 is one in which an inward protruding portion 13 is provided at an intermediate portion in the up-down direction between an opening 3 and a protruding portion 9 of a cylindrical body 2. The configuration of
It is the same as that shown in FIG. And according to this latch 1, when the lock bolt 1a is mounted, the inward protrusion 13
Since it enters the concave portion on the surface of the lock bolt 1a, the axial displacement of the lock bolt 1a can be reliably prevented, and the work of inserting the lock bolt 1a into the hole in the tunnel becomes easier.
また、第６図に示す別態様のロックボルトの掛止具１
は、円筒状本体２の下端に一体的に形成された掛止片1
0,11,12の、円筒状本体２との付根部に突出部14を膨出
加工して設けたもので、その他の構成は、第１図に示す
ものと同じである。そしてこの掛止具１によれば、掛止
片10,11,12のバネ力が確実に得られ、運搬等の取扱中の
掛止片10,11,12の変形が防止できる。また、この第６図
に示す掛止具１の円筒状本体２に、上記第５図に示した
内方向突出部13を設けてもよい。Further, another example of a lock bolt hooking device 1 shown in FIG.
Is a hooking piece 1 formed integrally with the lower end of the cylindrical body 2.
The projections 14 are provided at the roots of the cylindrical body 2 of 0, 11, and 12 by swelling, and the other configurations are the same as those shown in FIG. Further, according to the hooking tool 1, the spring force of the hooking pieces 10, 11, 12 is surely obtained, and the deformation of the hooking pieces 10, 11, 12 during handling such as transportation can be prevented. Further, the cylindrical main body 2 of the latch 1 shown in FIG. 6 may be provided with the inward protruding portion 13 shown in FIG.
尚、上記実施例において、掛止片10,11,12が三枚の場合
を例に説明したが、二枚以上で、コスト上からは六枚以
下が好ましい。In the above embodiment, the case where the number of the hooking pieces 10, 11, 12 is three has been described as an example, but it is preferable that the number is two or more and six or less in terms of cost.
また、上記実施例において、円筒状本体２の突出部９が
一本の場合を例に説明したが二乃至三本でもよく、また
突出部９および突出部14は、共に外方に膨出加工された
例を説明したが、内方に膨出加工されていてもよい。Further, in the above embodiment, the case where the number of the protruding portion 9 of the cylindrical main body 2 is one has been described as an example, but it may be two or three, and the protruding portion 9 and the protruding portion 14 are both bulged outward. However, it may be bulged inward.
上述したように、本考案に係わるロックボルトの掛止具
によれば、この掛止具をロックボルトに装着するのに、
特別の工具を使用することなく、ロックボルトの所望位
置に人力でもって着脱し得る。またこのように作業性よ
く着脱し得ることから、薄暗いトンネル内でも装着が容
易に行え、しかも掛止具とロックボルトを別々にトンネ
ル内へ運び入れ、トンネル内の現場で装着作業を行うこ
とができる。As described above, according to the lock bolt hooking device of the present invention, the lock bolt hooking device can be attached to the lock bolt by
The lock bolt can be manually attached / detached to / from a desired position without using a special tool. In addition, since it can be easily attached and detached in this way, it can be easily installed even in a dark tunnel, and the hook and the lock bolt can be carried into the tunnel separately and the installation work can be performed in the tunnel. it can.
第１図は、本考案に係わるロックボルトの掛止具の正面
図、第２図は、第１図の矢視Ａからの側面図、第３図
は、第１図に示す掛止具の素板の展開図、第４図は、本
考案に係わる別態様のロックボルトの掛止具用素板の展
開図、第５図は、本考案に係わる別態様のロックボルト
の掛止具の正面図、第６図は、本考案に係わる別態様の
ロックボルトの掛止具の側面図、第７図は、従来のロッ
クボルトの掛止具の側面図である。 １……掛止具、1a……ロックボルト ２……円筒状本体、３……開口部 ４，５……開口部の左右両端部 ６，７……鍔、９，14……突出部 10,11,12……掛止片、13……内方向突出部FIG. 1 is a front view of a lock bolt hooking device according to the present invention, FIG. 2 is a side view taken along the arrow A in FIG. 1, and FIG. 3 is a hooking device shown in FIG. FIG. 4 is a development view of the base plate, FIG. 4 is a development view of a base plate for locking bolts of another aspect of the present invention, and FIG. 5 is a development view of a locking bolt of lock bolts of another aspect of the present invention. FIG. 6 is a side view of a lock bolt latch of another embodiment according to the present invention, and FIG. 7 is a side view of a conventional lock bolt latch. 1 ... Latch, 1a ... Lock bolt 2 ... Cylindrical main body, 3 ... Opening 4,5 ... Left and right ends of the opening 6,7 ... Brim, 9,14 ... Projection 10 , 11,12 …… Latch, 13 …… Inward projection
Claims (3)
本体の一端に一体的に形成されその先端が放射状に広が
る複数個の掛止片とからなるロックボルトの掛止具であ
って、前記円筒状本体の開口部に対向する部位に所定長
さの突出部が周方向に設けられてなることを特徴とする
ロックボルトの掛止具。1. A locking bolt locking device comprising a cylindrical main body having an opening, and a plurality of locking pieces integrally formed at one end of the cylindrical main body and having a tip thereof radially spreading. A lock bolt hooking device, characterized in that a protrusion having a predetermined length is provided in a circumferential direction at a portion facing the opening of the cylindrical main body.
の間の上下方向中間部位に内方向突出部が設けられてな
ることを特徴とする第１請求項に記載のロックボルトの
掛止具。2. The lock bolt according to claim 1, wherein an inward protrusion is provided at a vertical intermediate portion between the opening of the cylindrical body and the protrusion having a predetermined length. Hooks.
本体の内径の0.6〜0,85倍であることを特徴とする第１
請求項又は第２請求項に記載のロックボルトの掛止具。3. An opening interval of the openings of the cylindrical body is 0.6 to 0.85 times the inner diameter of the cylindrical body.
The locking tool for a lock bolt according to claim 1 or 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989132931U JPH067120Y2 (en) | 1989-11-14 | 1989-11-14 | Lock bolt hook |
| KR2019900017098U KR940002717Y1 (en) | 1989-11-14 | 1990-11-09 | Anchoring bolt spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989132931U JPH067120Y2 (en) | 1989-11-14 | 1989-11-14 | Lock bolt hook |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0372999U JPH0372999U (en) | 1991-07-23 |
| JPH067120Y2 true JPH067120Y2 (en) | 1994-02-23 |
Family
ID=15092847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989132931U Expired - Lifetime JPH067120Y2 (en) | 1989-11-14 | 1989-11-14 | Lock bolt hook |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH067120Y2 (en) |
| KR (1) | KR940002717Y1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4864991B2 (en) * | 2009-02-02 | 2012-02-01 | 政和 山本 | Rust hump remover |
| MX338231B (en) * | 2012-04-19 | 2016-04-08 | Ian A Nazzari | Lock bolt. |
-
1989
- 1989-11-14 JP JP1989132931U patent/JPH067120Y2/en not_active Expired - Lifetime
-
1990
- 1990-11-09 KR KR2019900017098U patent/KR940002717Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0372999U (en) | 1991-07-23 |
| KR940002717Y1 (en) | 1994-04-23 |
| KR920009697U (en) | 1992-06-16 |
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