JP4045565B2 - Cone detachment wrench - Google Patents

Cone detachment wrench Download PDF

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Publication number
JP4045565B2
JP4045565B2 JP2001180862A JP2001180862A JP4045565B2 JP 4045565 B2 JP4045565 B2 JP 4045565B2 JP 2001180862 A JP2001180862 A JP 2001180862A JP 2001180862 A JP2001180862 A JP 2001180862A JP 4045565 B2 JP4045565 B2 JP 4045565B2
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Japan
Prior art keywords
wrench
cone
concrete
blade
nut
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Expired - Fee Related
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JP2001180862A
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Japanese (ja)
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JP2002337057A (en
Inventor
義孝 蛭子谷
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義孝 蛭子谷
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  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、コンクリート型枠間隔保持具用の受け具(通称コーン又はピーコーン)を取外すコーン脱着用レンチに関する。
【0002】
【従来の技術】
従来、コーン脱着用レンチとしては、コーン着脱用のレンチとして出願がなされている、実開平7−15268号が一般市場に提供されている。
【0003】
上記コーン着脱用のレンチでは、特にレンチ及び歯部に於て、レンチ部8を本体1の先端開口周縁よりやや後方の奥まった位置の中心穴4内面に形成し、この本体1先端の中心穴4の開口径よりレンチ部8の内径をやや小さく設定してレンチ部8の先端に段部11を形成し、且つその段面に内側方向に下がり傾斜したレンチ部導入ガイド傾斜面12を形成し、また先端開口周縁にコンクリートノロ除去用歯部10を設けているものなどからなる。
【0005】
そのレンチを使用する時、先ずコーン5のボルト6に本体1の中心穴4を被嵌し、本体1の先端開口周縁に設けたコンクリートノロ除去用歯部を回転させてコンクリートノロ9を除去しながらレンチ部導入ガイド傾斜面12により、ナット部7をレンチ部8に被嵌係合しそのまま回転させてナット部7を取外している。
【0006】
【発明が解決しようとする課題】
従来、コンクリート型枠を取外したあと、回転工具(通常、電動のインパクトドライバを使用する)を使用してコーンを取外すが、上述のような従来のコーン着脱用のレンチでは、レンチ部8の先端の歯部10が薄く、数多く取外す作業では直ぐにその歯部10がすり減って機能しなくなり、また該歯部10の高さの量のコンクリートを削り取った後、レンチ部8に掛り、ナット部7を回転させ取外すことから、必要以上にコンクリートノロを除去しなければナット部7に掛らず、その多く削り取る分時間を要し、また上記と同様該歯部10の摩耗が激しく、作業途中にレンチの取替える手間など作業性が悪く、また経済的でなかった。
【0007】
上記摩耗は、該歯部10が矩形状で、先端部が平らであるため歯部10の先端が摩擦で磨り減りが激しく、またコーン内部のコンクリートノロが、各歯部10の間に一杯詰まった状態では、該ノロの面を歯部10が滑るように回転して削り取る能力が極端に小さくなり、レンチの寿命が短かくなっていた。
【0008】
さらに、従来の先端周囲に小さく数多く設けている山切り状の歯(略正三角形状の歯)は、先端が少し減ると直ぐ切れ味が悪くなり、また上記の歯部10の目詰まり同様に切れ味が悪くなり、取りあえず使用できるがコンクリートノロ除去効率が落ち、作業効率が極端に悪くなることから好ましくなく、また通常、コンクリート壁の外すコーンの量が非常に多いことから、作業する上で素早く外すことが望まれていた。
【0009】
【課題を解決するための手段】
本発明のコーン脱着用レンチは、先端側開口内部に六角のレンチ部を形成し、該レンチ部の先端面から突出させ、且つ削り取る側を略直角に反対側を傾斜させた鋸歯状刃部を形成すると共に該レンチ部の各辺に対して一つの鋸歯状刃部を各形成させている。
【0010】
上述のことから、鋸歯状刃部の先端部までレンチ部を形成しているので、鋸歯状刃部でコンクリートノロを除去して、取り外すナットが露出すると、直ぐ該ナットに掛かりナットを早く回転に導くので、ナットを素早く取り外せる。
【0011】
また、鋸歯状刃部の外周と六角のレンチ部の六角面の中央部が厚く、各面が接する角部が薄く、削り取る鋸歯状刃部の前側が薄く角度が付いて形成されていることから、削り取りやすくコンクリートノロを除去する効率がよい。
【0012】
さらに、レンチ部の各辺に対して一つの鋸歯状刃部が各形成されており、各鋸歯状刃部の間が大きくコンクリートノロを除去された削りカスの排出が良いことからコンクリートノロを除去する効率がよい。
【0013】
【発明の実施の形態】
本発明のコーン脱着用レンチは、筒状レンチ本体の基端側に電動インパクトドライバなどの回転工具を連結する連結部を設けている。
【0014】
該筒状レンチ本体の先端側開口内部に六角のレンチ部を形成し、該レンチ部の先端面から突出させ、且つ削り取る側を略直角に反対側を傾斜させた鋸歯状刃部を形成すると共に該レンチ部の各辺に対して一つの鋸歯状刃部を各形成している。
【0015】
つまり、筒状レンチ本体の外周面と開口内部の該レンチ部の各辺とで鋸歯状刃部を形成しているので、削り取る鋸歯状刃部の前側が薄く角度が付いて形成されている。
【0016】
なお、上記コーンは、コンクリートを打設時にコンクリート型枠を保持固定する部品の一部で、コンクリートを打設時にコーン内部に入り込んで固まった状態のものがコンクリートノロで、該ノロを除去した後、内部のナットを取り外すことで該コーンが取り外せる。
【0017】
また、回転工具の電動インパクトドライバは、回転が止まると前後に間歇振動することで、コンクリート壁にドリルで容易に穴を開ける力を有しており、また本願のようにコンクリートノロが付着するコーンを取り除くときなどにも使用されるもので、建築現場などで一般的に多く使用されている。
【0018】
【実施例】
本発明の実施例を図面に基づいて説明すると、図1において、1はコーン脱着用レンチで、該コーン脱着用レンチ1は、外見が市販のソケットレンチと略同様で、有底の筒状レンチ本体2と基端側端面中央に電動のインパクトドライバ3に連結する棒状(図示では六角棒)の連結部4を設けている。
【0019】
そこで、該筒状レンチ本体2は、図2に示すように該内面側に内辺六角のレンチ部5を形成すると共に該筒状レンチ本体2の先端端面に突出形成した鋸歯状刃部6を設けている。
【0020】
該鋸歯状刃部6は、削り取る前側を略直角にした切削歯7と反対の後ろ側を傾斜させた逃げ角8の形状をした鋸歯状で、上記内辺六角の各辺に対して一つの鋸歯状刃部6を各形成している。
【0021】
そして、筒状レンチ本体2の外周と該レンチ部5の六角面の周方向の中央部が厚く、六角各面が接する角部が薄く、つまり鋸歯状刃部6の逃げ角8中央で板厚が厚く、また削り取る鋸歯状刃部6の前側の切削歯7が薄く角度が付いて形成されている。
【0022】
しかして、図3に示すように、コンクリート壁9に埋没状態に露出するコーン10を取り外すときに於いて、いま、セパレータボルト部11のナット12によりコーン10が固定され、且つ該コーン10内部にコンクリートノロ13が付着している状態にあるものを取り外す。
【0023】
そこで先ず、筒状レンチ本体2の連結部4を電動のインパクトドライバ3に連結固定し、その状態で、コーン10の内部より突出しているセパレータボルト部11の先端に筒状レンチ本体2を被嵌すると共に電動のインパクトドライバ3により筒状レンチ本体2を回転させ、その回転により鋸歯状刃部6でコンクリートノロ13を掻き取るように削り取る。
【0024】
その時、取り外すナット12が該コンクリートノロ13から露出すると直ぐ、該鋸歯状刃部6の先部近傍のレンチ部5が該ナット12に掛かり始め、その時の状態において、インパクトドライバ3の前後の振動によって、ナット12の先端部より徐々にコンクリートノロ13が取り除かれ、鋸歯状刃部6の内辺六角のレンチ部5に掛かりやすくなり、よってコンクリートノロ13が取り除かれながらナット12の回転が始まり、ナット12の取り除きが素早く行われる。
【0025】
また、そのコンクリートノロ13の取り除きに於いて、インパクトドライバ3の回転で削り取るとき、鋸歯状刃部6の略直角の切削歯7で、先ず掻き取るように削り、また強く押しつけると該インパクトドライバ3の回転が停止し、前後の振動により該鋸歯状刃部6の先端で突く作用で素早くコンクリートノロ13を取り除ける。
【0026】
そして、鋸歯状刃部6の外周と六角のレンチ部5の六角面の中央部が厚く、各面が接する角部が薄く、よって鋸歯状刃部6の削り取る切削歯7の前側が薄く角度が付いて形成されていることから、コンクリートノロ13を早く削り取る。
【0027】
さらに、各鋸歯状刃部6の間が大きく開いているので、掻き取られた削りカスのコンクリートノロ13が各鋸歯状刃部6の間から排出されるので、目詰まりを起こすことなくコンクリートノロ13を早く削り取る。
【0028】
このように、コンクリートノロ13が取り除かれながらナット12にレンチ部5が早く掛かり、素早くナット12が外されることで、コンクリート壁9からコーン10を早く取り外すことができる。
【0029】
つまり、コンクリート壁9に埋没状態に露出するコーン10を取り外すとき、コーン10内部にコンクリートノロ13の付着の有無にかかわらずナット12がコーン脱着用レンチ1で次々と素早く取外す作業が出来る。
【0030】
【発明の効果】
本発明は、以上説明したような形態で実施され、特に、筒状レンチ本体の基端側に回転工具を連結する連結部を設け、先端側開口内部に六角のレンチ部を形成し、該レンチ部の先端面から突出させ、且つ削り取る側を略直角に反対側を傾斜させた鋸歯状刃部を形成すると共に該レンチ部の各辺に対して一つの鋸歯状刃部を各形成しているので、
【0031】
コンクリートノロを除去して取り外すナットがある程度露出すると、直ぐ該ナットに掛かりナットを回転させるので素早くナットが取り外せ、通常コンクリート壁のコーンの量が非常に多いことから、素早く外せることが作業する上で、効率、コストなどに非常に大きく貢献する。
【0032】
また、コンクリートノロを除去する鋸歯状刃部の重要部分の板厚が厚く、磨り減りに強く、レンチの寿命を長く持たせることができる。
【0033】
さらに、削り取る鋸歯状刃部の前側の切削歯が薄く角度が付いて形成されていることから、コンクリートノロを効率よく早く削り取れる。
【0034】
加えて、各鋸歯状刃部の間が開いていることで、掻き取られた削りカスのコンクリートノロが各鋸歯状刃部の間から早く排出され、目詰まりを起こすことなくコンクリートノロを早く効率よく削り取ることができる。
【0035】
さらに加えて、電動インパクトドライバを使用する事で、コンクリートノロを除去してナットが露出すると直ぐ該ナットに掛かり始め、前後方向の振動もあることからナットがレンチ部に掛かりやすくナットの取り外しが早く行われ、作業効率が上がることで、コストダウンが図れる。よって本発明は実用上著大な効果を奏する。
【図面の簡単な説明】
【図1】本発明の実施例の斜視図である。
【図2】本発明の実施例の正面図である。
【図3】使用状態状態を示す要部の側面断面図である。
【符号の説明】
1 コーン脱着用レンチ
2 筒状レンチ本体
3 インパクトドライバ
4 連結部
5 レンチ部
6 鋸歯状刃部
7 切削歯
8 逃げ角
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cone detachment wrench for removing a holder (commonly called cone or peacorn) for a concrete formwork spacing holder.
[0002]
[Prior art]
Conventionally, as a cone detaching wrench, Japanese Utility Model Application Publication No. 7-15268, which has been filed as a wrench for attaching and detaching a cone, is provided to the general market.
[0003]
In the wrench for attaching and detaching the cone, the wrench portion 8 is formed in the inner surface of the center hole 4 at a position slightly behind the peripheral edge of the front end opening of the main body 1, particularly in the wrench and teeth portion. The inner diameter of the wrench portion 8 is set to be slightly smaller than the opening diameter of 4, and a step portion 11 is formed at the tip of the wrench portion 8, and a wrench portion introduction guide inclined surface 12 inclined downward inward is formed on the step surface. In addition, the peripheral edge of the tip opening is provided with a concrete blade removing tooth 10.
[0005]
When the wrench is used, first, the center hole 4 of the main body 1 is fitted on the bolt 6 of the cone 5, and the concrete blade 9 is removed by rotating the concrete blade removing tooth provided on the peripheral edge of the opening of the main body 1. However, the nut portion 7 is fitted and engaged with the wrench portion 8 by the wrench portion introduction guide inclined surface 12 and is rotated as it is to remove the nut portion 7.
[0006]
[Problems to be solved by the invention]
Conventionally, after removing the concrete formwork, the cone is removed using a rotating tool (usually using an electric impact driver). In the conventional cone wrench as described above, the tip of the wrench 8 is used. The tooth portion 10 is thin, and in the operation of removing a large number, the tooth portion 10 is immediately worn out and does not function, and after scraping the amount of concrete of the height of the tooth portion 10, it is hung on the wrench portion 8 and the nut portion 7 is attached. Since it is rotated and removed, if the concrete blade is not removed more than necessary, it will not be applied to the nut portion 7 and it will take time to scrape much of it, and the tooth portion 10 will be worn heavily as described above, and the wrench will be in the middle of the work. The workability such as the trouble of replacing was poor and it was not economical.
[0007]
As for the wear, the tooth portion 10 has a rectangular shape and the tip portion is flat, so that the tip of the tooth portion 10 is worn away by friction, and the concrete core inside the cone is filled between the tooth portions 10. In this state, the ability to rotate and scrape the surface of the slot so that the tooth portion 10 slides becomes extremely small, and the life of the wrench is shortened.
[0008]
Furthermore, the conventional angled teeth (substantially equilateral triangular teeth) that are provided in large numbers around the tip of the tip become worse immediately when the tip is slightly reduced, and the sharpness is similar to the clogging of the tooth portion 10 described above. It is unfavorable because it can be used for the time being, but the concrete removal efficiency is lowered and the work efficiency becomes extremely bad. Usually, the amount of cone to be removed from the concrete wall is very large. It was hoped that.
[0009]
[Means for Solving the Problems]
The cone detachment wrench of the present invention has a serrated blade part formed with a hexagonal wrench part inside the opening on the tip side, protruded from the tip surface of the wrench part, and the side to be scraped is inclined at a substantially right angle to the opposite side. Each of the serrated blade portions is formed for each side of the wrench portion.
[0010]
From the above, the wrench part is formed up to the tip of the serrated blade part, so when the concrete blade is removed by the serrated blade part and the nut to be removed is exposed, the nut is immediately put on the nut and the nut is rotated quickly. Because it leads, you can quickly remove the nut.
[0011]
In addition, the outer periphery of the serrated blade and the central part of the hexagonal surface of the hexagonal wrench are thick, the corners that contact each surface are thin, and the front side of the sawtooth blade to be scraped is formed with a thin angle. It is easy to scrape and has good efficiency of removing concrete chips.
[0012]
Furthermore, each serrated blade part is formed for each side of the wrench part, and the gap between each serrated blade part is greatly removed. Efficient.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The cone detachment wrench of the present invention is provided with a connecting portion for connecting a rotary tool such as an electric impact driver on the base end side of the cylindrical wrench main body.
[0014]
A hexagonal wrench portion is formed inside the opening on the distal end side of the cylindrical wrench body, and a saw-tooth blade portion is formed that protrudes from the distal end surface of the wrench portion and the side to be scraped is inclined substantially at a right angle. One serrated blade portion is formed for each side of the wrench portion.
[0015]
That is, since the sawtooth blade portion is formed by the outer peripheral surface of the cylindrical wrench body and each side of the wrench portion inside the opening, the front side of the sawtooth blade portion to be scraped is formed with a thin angle.
[0016]
The cone is a part of the part that holds and fixes the concrete formwork when placing concrete, and the concrete that has entered and solidified inside the cone when placing concrete is a concrete nose after the nose is removed The cone can be removed by removing the nut inside.
[0017]
In addition, the electric impact driver of a rotary tool has a force to easily drill a hole in a concrete wall by intermittently vibrating back and forth when rotation stops, and a cone to which a concrete nodule adheres as in the present application. It is also used when removing stencils and is commonly used in construction sites.
[0018]
【Example】
An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a cone detachment wrench. The cone detachment wrench 1 has substantially the same appearance as a commercially available socket wrench and has a bottomed cylindrical wrench. In the center of the main body 2 and the base end side end face, a bar-like (hexagonal bar in the drawing) connecting portion 4 connected to the electric impact driver 3 is provided.
[0019]
Therefore, the cylindrical wrench main body 2 has an inner hexagonal wrench portion 5 formed on the inner surface side as shown in FIG. 2 and a serrated blade portion 6 formed to protrude from the tip end surface of the cylindrical wrench main body 2. Provided.
[0020]
The serrated blade portion 6 is a sawtooth shape having a clearance angle 8 in which the rear side opposite to the cutting teeth 7 with the front side to be scraped substantially at right angles is inclined, and is one for each side of the inner side hexagon. Each serrated blade portion 6 is formed.
[0021]
The outer periphery of the cylindrical wrench body 2 and the center portion in the circumferential direction of the hexagonal surface of the wrench portion 5 are thick and the corner portions where the hexagonal surfaces contact each other are thin, that is, the plate thickness at the center of the relief angle 8 of the sawtooth blade portion 6. The cutting teeth 7 on the front side of the serrated blade portion 6 to be scraped off are formed with a thin angle.
[0022]
As shown in FIG. 3, when removing the cone 10 exposed in the concrete wall 9, the cone 10 is now fixed by the nut 12 of the separator bolt portion 11, and inside the cone 10. The thing in the state to which the concrete noro 13 has adhered is removed.
[0023]
Therefore, first, the connecting portion 4 of the cylindrical wrench body 2 is connected and fixed to the electric impact driver 3, and in this state, the cylindrical wrench body 2 is fitted to the tip of the separator bolt portion 11 protruding from the inside of the cone 10. At the same time, the cylindrical wrench main body 2 is rotated by the electric impact driver 3, and the saw blade 6 cuts away the concrete blade 13 by the rotation.
[0024]
At that time, as soon as the nut 12 to be removed is exposed from the concrete blade 13, the wrench portion 5 near the tip of the sawtooth blade portion 6 starts to be hooked on the nut 12, and in that state, the vibration of the impact driver 3 is caused by vibrations in the front and rear. Then, the concrete blade 13 is gradually removed from the tip of the nut 12 and is easily hooked on the hexagonal wrench portion 5 on the inner side of the serrated blade portion 6, so that the nut 12 starts rotating while the concrete blade 13 is removed, and the nut 12 is removed quickly.
[0025]
In removing the concrete blade 13, when the impact driver 3 is scraped off, the impact driver 3 is scraped off with the cutting teeth 7 of the saw-toothed blade portion 6 so as to be scraped off and pressed strongly. Is stopped, and the concrete blade 13 can be quickly removed by the action of thrusting at the tip of the serrated blade portion 6 by the vibration of the front and rear.
[0026]
And the outer periphery of the serrated blade portion 6 and the central portion of the hexagonal surface of the hexagonal wrench portion 5 are thick, and the corner portion where each surface is in contact is thin, so the front side of the cutting tooth 7 scraped off by the sawtooth blade portion 6 is thin and has an angle. Since it is attached, the concrete noro 13 is scraped off quickly.
[0027]
Further, since the space between the respective serrated blade portions 6 is wide open, the scraped scrap concrete scrap 13 is discharged from between the respective serrated blade portions 6, so that the concrete scrap is not clogged. Scrap 13 quickly.
[0028]
In this way, the wrench portion 5 is quickly applied to the nut 12 while the concrete blade 13 is removed, and the cone 12 can be quickly removed from the concrete wall 9 by quickly removing the nut 12.
[0029]
That is, when the cone 10 exposed in the concrete wall 9 is removed, the nut 12 can be quickly removed one after another by the cone detachment wrench 1 regardless of whether the concrete blade 13 is attached to the inside of the cone 10.
[0030]
【The invention's effect】
The present invention is implemented in the form as described above, and in particular, a connecting portion for connecting a rotary tool is provided on the proximal end side of the cylindrical wrench main body, and a hexagonal wrench portion is formed inside the distal end side opening. A serrated blade portion is formed that protrudes from the tip surface of the portion and the side to be scraped is inclined at a substantially right angle and the opposite side is inclined, and one serrated blade portion is formed for each side of the wrench portion. So
[0031]
When the nut to be removed is exposed to some extent after removing the concrete scrap, the nut is immediately put on the nut and the nut is rotated, so the nut can be removed quickly, and the amount of cone on the concrete wall is usually very large. , Contributing greatly to efficiency, cost, etc.
[0032]
Further, the thickness of the important portion of the serrated blade portion for removing the concrete blade is thick, it is strong against abrasion, and the life of the wrench can be extended.
[0033]
Further, since the cutting teeth on the front side of the saw-toothed blade portion to be scraped are formed with a thin angle, the concrete blade can be scraped efficiently and quickly.
[0034]
In addition, since the space between each serrated blade portion is open, the scraped scrap concrete scrap is quickly discharged from between each serrated blade portion, and the concrete scrap can be quickly and efficiently made without clogging. Can be scraped off well.
[0035]
In addition, by using an electric impact driver, as soon as the nut is exposed after removing the concrete nose, the nut starts to hook on the nut, and there is also vibration in the front-rear direction. It is possible to reduce costs by improving work efficiency. Therefore, the present invention has a remarkable effect in practical use.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of the present invention.
FIG. 2 is a front view of an embodiment of the present invention.
FIG. 3 is a side sectional view of a main part showing a state of use.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cone detachment wrench 2 Cylindrical wrench main body 3 Impact driver 4 Connection part 5 Wrench part 6 Serrated blade part 7 Cutting tooth 8 Clearance angle

Claims (1)

筒状レンチ本体の基端側に電動インパクトドライバを連結する連結部を設け、該レンチ本体中間に、脱着対象であるコ−ンの先のボルトに対し被嵌し得る穴を内設し、該レンチ本体の先端側開口内部に、前記コ−ン内の六角ナットに掛け合わせできる六角のレンチ部を形成し、そのレンチ部の先端面から突出させ、且つ左回転方向で、コンクリ−トノロを削り取る側をコンクリ−ト面に対して略直角に、そしてその六角のレンチ部の角部より該レンチ本体の外周までの、周方向の肉厚の一番薄い端面の部分を、コ−ン内部に入ったコンクリ−トノロを削り取る切削歯面とし、反対側の先端部を、前後間歇振動だけにてコンクリ−トノロの取り除きができるようやや大きく傾斜させた鋸歯状刃部を形成すると共にそのレンチ部の各辺に対して1つの鋸歯状刃部を各形成させたことを特徴とするコ−ン脱着用レンチ。A connecting portion for connecting the electric impact driver is provided on the base end side of the cylindrical wrench body, and a hole that can be fitted to the bolt at the tip of the cone to be detached is provided in the middle of the wrench body, A hexagonal wrench that can be hooked to the hexagonal nut in the cone is formed in the opening on the distal end side of the wrench body, protrudes from the distal end surface of the wrench, and scrapes away the concrete noro in the counterclockwise direction. the side concrete - substantially at right angles to the up surface, and up to the outer periphery of the wrench body from the corners of the hexagonal wrench portion, the thinnest end face portion of the thickness of the circumferential direction, co - internal emissions The cutting tooth surface that scrapes away the concreting blade is formed, and the tip of the opposite side is formed with a sawtooth-like blade portion that is slightly inclined so that the concreting blade can be removed only by longitudinal vibration . 1 for each side Emissions desorption wrench - co which the serrated blade portion, characterized in that to each form.
JP2001180862A 2001-05-11 2001-05-11 Cone detachment wrench Expired - Fee Related JP4045565B2 (en)

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JP2001180862A JP4045565B2 (en) 2001-05-11 2001-05-11 Cone detachment wrench

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JP4045565B2 true JP4045565B2 (en) 2008-02-13

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Publication number Priority date Publication date Assignee Title
US8915168B2 (en) 2011-07-14 2014-12-23 Robert Gale Jeter, JR. Counter boring socket
TWI535537B (en) * 2013-05-28 2016-06-01 A non-slip drive tool
CN104209916B (en) * 2013-05-31 2016-08-17 志拓有限公司 There is the driving instrument of antiskid function

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