JP3984358B2 - Support blackboard stopper for construction - Google Patents

Support blackboard stopper for construction Download PDF

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Publication number
JP3984358B2
JP3984358B2 JP11155798A JP11155798A JP3984358B2 JP 3984358 B2 JP3984358 B2 JP 3984358B2 JP 11155798 A JP11155798 A JP 11155798A JP 11155798 A JP11155798 A JP 11155798A JP 3984358 B2 JP3984358 B2 JP 3984358B2
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Japan
Prior art keywords
support leg
blackboard
support
stopper
construction
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Expired - Lifetime
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JP11155798A
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Japanese (ja)
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JPH11291690A (en
Inventor
勝行 木俣
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有限会社山行舎
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Priority to JP11155798A priority Critical patent/JP3984358B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、工事用黒板の支脚に適用されるストッパーに関する。
【0002】
【従来の技術】
一般に工事用黒板は、所轄役所に提出する所定書類に添付する現場写真の撮影時に、工事名,工種,測点その他の所要事項を記載して、現場写真に写し込むために使用されている。かかる工事用黒板は、撮影時に立ち姿勢を保持させる必要があり、従来は現場にある柱やブロック等の適当な支持体に立て掛けてその撮影を行なっていた。ところが、単に適当な支持体に立て掛けただけでは不安定であり、また、現場に適当な支持体がない場合には撮影に支障を来すこともある。このため、近年、立ち姿勢を保持する支脚を裏面に取付けたものが一部で案出されている。
【0003】
図8イは、従来の支脚の一例を示すものであって、これは、工事用黒板aの裏面に上下方向の取付け杆bを固着し、該取付け杆bの側面を貫通させるようにして軸受孔cを形成する一方、一条の線材からなる支脚dの上端部をL形に曲成して支軸部eとし、該支軸部eを前記軸受孔cに側方から嵌入するとともに、その突出端にナットfを螺着して緊締することにより、支脚dを回動可能に取付けたものであって、図8ロに示すように、使用時に支脚dを後方向に回動させて工事用黒板aの立ち姿勢を保持させ、また、不使用時には工事用黒板aに近接する側に回動させて収納し得るようになっている。
【0004】
【発明が解決しようとする課題】
上記のような支脚dにあっては、ナットfを強く締め付けることにより、支脚dの自由回動を規制して、回動位置の保持を行なわせている。ところが、支脚dの回動操作の繰り返しによってナットfが緩み易く、該ナットfが緩むと、その位置保持作用が得られなくなり、支脚dが所定の引出し角度を超えて自由に回動してしまう結果、工事用黒板aが倒れてしまうという問題点がある。
【0005】
本発明は、かかる従来の問題点を解消し得るようにした工事用黒板の支脚ストッパーの提供を目的とするものである。
【0006】
【課題を解決するための手段】
本発明は、前面に黒板面を備えた基板の裏面に矩形状周枠が配設されてなる工事用黒板の、前記矩形状周枠の左右枠杆の内側面に形成された軸受孔に支軸部を回動可能に嵌入して後方向に引出し可能に設けられ、その回動操作により矩形状周枠内に収まる収納位置と、後方向に引出されて工事用黒板の立ち姿勢を保持する引出し位置とに変換される支脚に適用されるものであって、
線材の上部を巻回してその巻回部を前記支脚の支軸部に外嵌するとともに、該線材の下端部を前記支脚に係合させることにより、該線材を支脚とともに回動可能に設け、前記巻回部から線材の上端を斜め上方に突出させて、前記支脚の引出し位置で前記基板の裏面に当接してその引出し量を規定する規定端としたことを特徴とする工事用黒板の支脚ストッパーである。
【0007】
かかる構成にあって、支脚を、後方向への回動操作により収納位置から引出し位置へ引出すと、該支脚とともにストッパーが回動し、その規定端が基板の裏面に当接して支脚のそれ以上の回動を阻止する。これにより 支脚の引出し量を制限することができ、必要以上に支脚が引出されることによる工事用黒板の転倒を防止することができる。
【0008】
【発明の実施の形態】
本発明の一実施例を、図1〜図7について説明する。
1は、本発明を適用する工事用黒板を示す。該工事用黒板1は、チョーク,クレヨン等の筆記具で消去可能に筆記し得る黒板面2を前面に備えた矩形状の基板3と、該基板3の周縁を囲繞するようにしてその裏面に配設された矩形状周枠4とからなり、前記黒板面2には、「工事名,工種,測点」その他の所定文字と枠線とによって構成される所要事項記載欄5が設けられている。尚、工事用黒板1にあって、前記所要事項記載欄5は必ずしも予め設けておく必要はなく、黒板面2を無地状にしてもよい。また、矩形状周枠4の上部には、工事用黒板1の持ち運びに便利なように、コ字形に形成された把手15が出没自在に取付けられている。
【0009】
前記矩形状周枠4は、適宜の厚みと幅を有する型材からなる上下枠杆4a,4aと左右枠杆4b,4bとを矩形状に組み付けて構成されている。この左右枠杆4b,4bの内側面には、その上部寄り位置に軸受孔6,6が左右一対に形成されており、該軸受孔6,6には、支脚7の支軸部8,8が回動可能に嵌入されている。
【0010】
前記支脚7は、適宜のバネ性を有する一条の線材を略コ字形に曲成するとともに、その上端部をL形に曲成して左右に突出する支軸部8,8としたものである。該支脚7は、両支軸部8,8間の幅が前記左右枠杆4b,4b間の幅より広くなるように形成されており、これを押し縮めて軸受孔6,6に嵌入することにより、その弾性復元力によって支軸部8,8が軸受孔6,6から容易に抜けないようになっている。また、前記支軸部8,8の長さは、左右枠杆4b,4bの各幅より長くなるように設定されており、図4に示すように、支軸部8,8を軸受孔6,6に嵌入し、各支軸部8,8の先端を前記弾性復元力を介して左右枠杆4b,4b内の対向壁面9に圧接させた状態において、各支軸部8の基端部8’が左右枠杆4b,4bの外側に残るようにしており、該基端部8’に後述のストッパー10の巻回部12を外嵌し得るようになっている。
【0011】
このように、左右枠杆4b,4bの軸受孔6,6に支軸部8,8が回動可能に嵌入された支脚7は後方向に引出し可能であり、その回動操作によって、図3に示すように、矩形状周枠4内に収まる収納位置xと、後方向に引出されて工事用黒板1の立ち姿勢を保持する引出し位置yとに変換し得るようになっている。
【0012】
次に、本発明の要部について説明する。
本発明にかかる支脚ストッパー10は、前記支脚7の支軸部8,8部分に左右一対で配設されるものである。各支脚ストッパー10は、図5に示すように、所定長さの一条の線材11の上部を略一回強、縦巻状に巻回することにより、前記支脚7の支軸部8に外嵌し得る巻回部12が形成されるとともに、該巻回部12から線材11の上端を斜め上方に突出させて規定端13が設けられている。また、線材11の下部は側方に屈曲され、かつその先端部分を略U形を呈するように水平に曲成することにより、前記支脚7の上下方向に延在する主杆部7aに係合し得る係合部14が形成されている。この略U形の係合部14の開放端の幅は、主杆部7aの外径より狭くなるように設けられており、該開放端からの主杆部7aの抜け出しを防止し得るようになっている。
【0013】
尚、図5に示した支脚ストッパー10は、工事用黒板1の裏面視においてその左側に適用されるものであり、右側に適用される支脚ストッパー10は、左右が逆の対称形に形成される。また、この支脚ストッパー10を構成する線材11は、外力によって容易に変形しないものであることが望ましく、その材質として適宜のバネ性を有するバネ鋼製線材が好適に用いられ得る。
【0014】
前記支脚ストッパー10を支脚7に装着するには、支脚7の支軸部8,8を左右枠杆4b,4bの軸受孔6,6から外した状態で、図6イに示すように、まず、支脚7の支軸部8の先端を係合部14内に差し通すようにして該係合部14を支軸部8の先端から外嵌し、そのまま支軸部8の基端部8’を経て主杆部7aまで移動させることにより、図6ロに示すように、係合部14を主杆部7aに係合させる。次に、巻回部12を支軸部8の先端から外嵌して、図6ハに示すように、基端部8’まで移動させる。そして、この状態で両支軸部8,8を左右枠杆4b,4bの軸受孔6,6に夫々嵌入することにより、図2,図4に示すような装着状態が得られる。
【0015】
かかる構成にあって、支脚7を、図7イに示す収納位置から後方向へ回動させ、工事用黒板1の立ち姿勢を保持する引出し位置まで引出すと、巻回部12が外嵌された支軸部8を中心にして支脚ストッパー10が支脚7とともに回動し、図7ロに示すように、規定端13が基板3の裏面に当接することとなり、支脚7のそれ以上の回動が阻止される。これにより支脚7の引出し量を制限するストッパー作用が得られ、必要以上に支脚7が引出されることによる工事用黒板1の転倒を防止することができる。ここで、前記規定端13は、工事用黒板1の立ち姿勢を保持する支脚7の引出し位置で前記基板3の裏面に当接するように斜め上方への突出角度が設定されており、該支脚7の引出し量を規定し得るようなっている。
【0016】
また、図7ロに示す状態から、支脚7を、前方向に回動させると、該支脚7の回動に伴なって支脚ストッパー10も同方向に回動し、規定端13が基板3の裏面から離れることとなり、そのストッパー作用を解除することができる。
【0017】
【発明の効果】
本発明は上述のように、線材11の上部を巻回してその巻回部12を支脚7の支軸部8に外嵌するとともに、該線材11の下端部を支脚7に係合させることにより、該線材11を支脚7とともに回動可能に設け、前記巻回部12から線材11の上端を斜め上方に突出させて規定端13とし、該規定端13を支脚7の引出し位置で基板3の裏面に当接してその引出し量を規定するように構成した支脚ストッパー10であるので、支脚7を、後方向への回動操作により収納位置から引出し位置へ引出すと、該支脚7とともにストッパー10が回動し、その規定端13が基板3の裏面に当接して支脚7のそれ以上の回動を阻止する。これにより 支脚7の引出し量を制限することができ、必要以上に支脚7が引出されることによる工事用黒板1の転倒を防止することができる。
【0018】
また、本発明にかかる支脚ストッパー10は、線材11を曲成加工するだけで簡単に製作し得るので安価であり、また、支脚7への装着を簡単に行なうことができ、さらに支脚7の前後方向の回動操作によって、自動的にストッパー作用及びその解除作用が得られる等の優れた効果がある。
【図面の簡単な説明】
【図1】本発明に係る支脚ストッパーを適用した工事用黒板の正面図である。
【図2】同上の工事用黒板の背面図である。
【図3】同上の工事用黒板の支脚を引出した状態の側断面図である。
【図4】本発明に係る支脚ストッパーを装着した支脚の上端部分の拡大背面図である。
【図5】本発明に係る支脚ストッパーの外観斜視図である。
【図6】同上の支脚ストッパーの装着手順の説明図である。
【図7】同上の支脚ストッパーの作用説明図である。
【図8】イは、従来構成の工事用黒板の背面図、ロは、支脚を引出した状態の側断面図である。
【符号の説明】
1 工事用黒板
2 黒板面
3 基板
4 矩形状周枠
4b 左右枠杆
6 軸受孔
7 支脚
8 支軸部
10 支脚ストッパー
11 線材
12 巻回部
13 規定端
x 収納位置
y 引出し位置
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stopper applied to a support leg of a construction blackboard.
[0002]
[Prior art]
In general, a construction blackboard is used to record the name of a construction, type of work, measuring points, and other necessary items on a site photograph when photographing a site photograph attached to a predetermined document to be submitted to a competent government office. Such a construction blackboard needs to maintain a standing posture at the time of photographing. Conventionally, the construction blackboard is stood on an appropriate support such as a pillar or a block on the site and photographed. However, it is unstable by simply leaning on a suitable support, and if there is no suitable support in the field, shooting may be hindered. For this reason, in recent years, some have been devised in which a supporting leg for holding a standing posture is attached to the back surface.
[0003]
FIG. 8A shows an example of a conventional support leg. This is a bearing in which a vertical mounting rod b is fixed to the back surface of the construction blackboard a and the side surface of the mounting rod b is penetrated. While forming the hole c, the upper end portion of the support leg d made of a single wire is bent into an L shape to form a support shaft portion e, and the support shaft portion e is fitted into the bearing hole c from the side, A nut d is screwed onto the projecting end and tightened to attach the support leg d so that it can be rotated. As shown in FIG. 8B, the support leg d is rotated rearward during use. The standing position of the blackboard a is maintained, and when not in use, the blackboard a can be stored by being rotated to the side close to the construction blackboard a.
[0004]
[Problems to be solved by the invention]
In the support leg d as described above, the nut f is strongly tightened to restrict the free rotation of the support leg d and hold the rotation position. However, the nut f is easily loosened by repeating the pivoting operation of the support leg d, and when the nut f is loosened, the position holding action cannot be obtained, and the support leg d freely rotates beyond a predetermined pull-out angle. As a result, there is a problem that the construction blackboard a falls down.
[0005]
An object of the present invention is to provide a support blackboard stopper for a construction blackboard capable of solving such a conventional problem.
[0006]
[Means for Solving the Problems]
The present invention supports a bearing hole formed on the inner surface of the left and right frame rods of a rectangular peripheral frame of a construction blackboard having a rectangular peripheral frame disposed on the back surface of a board having a blackboard surface on the front surface. It is provided so that the shaft part can be pivoted and pulled out in the rear direction, and the storage position that fits within the rectangular peripheral frame by the pivoting operation and the standing position of the construction blackboard that is pulled out in the rear direction are maintained. It is applied to the support leg converted into the drawer position,
The upper part of the wire rod is wound and the winding portion is externally fitted to the support shaft portion of the support leg, and the lower end portion of the wire rod is engaged with the support leg so that the wire rod can be rotated together with the support leg. The support leg of the construction blackboard is characterized in that the upper end of the wire rod is protruded obliquely upward from the winding portion, and is a defined end that abuts against the back surface of the substrate at the position where the support leg is drawn to define the amount of drawing. It is a stopper.
[0007]
In such a configuration, when the support leg is pulled out from the storage position to the pull-out position by a backward rotation operation, the stopper rotates together with the support leg, and the specified end abuts on the back surface of the substrate and exceeds the support leg. The rotation of the is prevented. As a result, the amount of pullout of the support leg can be limited, and the fall of the construction blackboard due to the extension of the support leg more than necessary can be prevented.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
One embodiment of the present invention will be described with reference to FIGS.
Reference numeral 1 denotes a construction blackboard to which the present invention is applied. The construction blackboard 1 includes a rectangular board 3 having a blackboard surface 2 that can be written with a writing tool such as chalk or crayon on the front surface, and a back surface so as to surround the periphery of the board 3. The blackboard surface 2 is provided with a required item description column 5 including “construction name, work type, measuring point” and other predetermined characters and a frame line. . In the construction blackboard 1, the required item description column 5 is not necessarily provided in advance, and the blackboard surface 2 may be plain. Further, a handle 15 formed in a U-shape is attached to the upper part of the rectangular peripheral frame 4 so as to be able to appear and retract so that the construction blackboard 1 can be easily carried.
[0009]
The rectangular peripheral frame 4 is configured by assembling upper and lower frame ridges 4a, 4a and left and right frame ridges 4b, 4b made of a mold having an appropriate thickness and width into a rectangular shape. A pair of left and right bearing holes 6, 6 are formed on the inner side surfaces of the left and right frame rods 4 b, 4 b at positions close to the upper portion thereof, and the shaft portions 8, 8 of the support leg 7 are formed in the bearing holes 6, 6. Is rotatably inserted.
[0010]
The support leg 7 is formed by bending a single wire having an appropriate spring property into a substantially U-shape and bending the upper end thereof into an L shape to form support shaft portions 8 and 8 protruding left and right. . The support leg 7 is formed so that the width between the both support shaft parts 8 and 8 is wider than the width between the left and right frame rods 4b and 4b, and the support leg 7 is compressed to fit into the bearing holes 6 and 6. Thus, the support shaft portions 8 and 8 are not easily removed from the bearing holes 6 and 6 by the elastic restoring force. The lengths of the support shafts 8 and 8 are set to be longer than the widths of the left and right frame rods 4b and 4b, and the support shafts 8 and 8 are connected to the bearing holes 6 as shown in FIG. 6 and the base end portion of each support shaft portion 8 in a state where the tips of the support shaft portions 8 and 8 are pressed against the opposing wall surfaces 9 in the left and right frame rods 4b and 4b through the elastic restoring force. 8 'is left outside the left and right frame rods 4b, 4b, and a winding portion 12 of a stopper 10 to be described later can be fitted onto the base end portion 8'.
[0011]
As described above, the support leg 7 in which the support shaft portions 8 and 8 are rotatably fitted in the bearing holes 6 and 6 of the left and right frame rods 4b and 4b can be pulled out in the backward direction. As shown in FIG. 4, the storage position x can be converted into a storage position x that fits in the rectangular peripheral frame 4 and a drawer position y that is pulled out in the backward direction and maintains the standing posture of the construction blackboard 1.
[0012]
Next, the main part of the present invention will be described.
The support leg stopper 10 according to the present invention is arranged in a pair of left and right on the support shaft portions 8 and 8 of the support leg 7. As shown in FIG. 5, each support leg stopper 10 is externally fitted to the support shaft part 8 of the support leg 7 by winding the upper part of a single wire 11 having a predetermined length into a vertical winding shape. The possible winding part 12 is formed, and the upper end of the wire 11 is protruded obliquely upward from the winding part 12, and the defined end 13 is provided. Further, the lower portion of the wire 11 is bent sideways, and the tip portion thereof is horizontally bent so as to have a substantially U shape, thereby engaging the main collar portion 7a extending in the vertical direction of the support leg 7. A possible engaging portion 14 is formed. The width of the open end of the substantially U-shaped engaging portion 14 is provided to be narrower than the outer diameter of the main collar portion 7a, so that the main collar portion 7a can be prevented from coming off from the open end. It has become.
[0013]
The supporting leg stopper 10 shown in FIG. 5 is applied to the left side of the construction blackboard 1 when viewed from the back side, and the supporting leg stopper 10 applied to the right side is formed in a symmetrical shape with the left and right sides reversed. . Moreover, it is desirable that the wire 11 constituting the support leg stopper 10 is not easily deformed by an external force, and a spring steel wire having an appropriate spring property can be suitably used as the material.
[0014]
In order to mount the support leg stopper 10 on the support leg 7, first, as shown in FIG. 6A, the support shafts 8 and 8 of the support leg 7 are removed from the bearing holes 6 and 6 of the left and right frame rods 4b and 4b. The engaging portion 14 is fitted from the distal end of the supporting shaft portion 8 so that the distal end of the supporting shaft portion 8 of the supporting leg 7 is inserted into the engaging portion 14, and the base end portion 8 ′ of the supporting shaft portion 8 is directly attached. As shown in FIG. 6B, the engaging portion 14 is engaged with the main collar portion 7a. Next, the winding portion 12 is fitted from the distal end of the support shaft portion 8 and moved to the base end portion 8 ′ as shown in FIG. Then, in this state, the both shaft portions 8 and 8 are fitted into the bearing holes 6 and 6 of the left and right frame rods 4b and 4b, respectively, thereby obtaining the mounting state as shown in FIGS.
[0015]
In such a configuration, when the support leg 7 is rotated backward from the storage position shown in FIG. 7A and pulled out to the pull-out position that maintains the standing posture of the construction blackboard 1, the winding portion 12 is externally fitted. As shown in FIG. 7B, the support stopper 10 rotates around the support shaft portion 8 together with the support leg 7, and the defined end 13 comes into contact with the back surface of the substrate 3, so that the support leg 7 is further rotated. Be blocked. Accordingly, a stopper action for limiting the amount of pulling out of the support leg 7 is obtained, and the construction blackboard 1 can be prevented from being overturned due to the support leg 7 being pulled out more than necessary. Here, the predetermined end 13 has an obliquely upward projecting angle so as to come into contact with the back surface of the substrate 3 at a drawing position of the supporting leg 7 that holds the standing position of the construction blackboard 1. The amount of withdrawal can be specified.
[0016]
7B, when the support leg 7 is rotated in the forward direction, the support leg stopper 10 is also rotated in the same direction as the support leg 7 is rotated. The stopper action can be canceled by moving away from the back surface.
[0017]
【The invention's effect】
As described above, the present invention winds the upper part of the wire 11 and externally fits the winding part 12 to the support shaft part 8 of the support leg 7 and engages the lower end part of the wire 11 with the support leg 7. The wire 11 is provided so as to be rotatable together with the support leg 7, the upper end of the wire 11 is protruded obliquely upward from the winding part 12 to be a defined end 13, and the defined end 13 is positioned at the position where the support leg 7 is pulled out. Since the support leg stopper 10 is configured to abut on the back surface and regulate the amount of withdrawal, when the support leg 7 is pulled out from the storage position to the withdrawal position by a backward rotation operation, the stopper 10 together with the support leg 7 The specified end 13 abuts against the back surface of the substrate 3 to prevent further rotation of the support leg 7. Thereby, the pull-out amount of the support leg 7 can be restricted, and the fall of the construction blackboard 1 due to the support leg 7 being pulled out more than necessary can be prevented.
[0018]
Further, the support leg stopper 10 according to the present invention is inexpensive because it can be easily manufactured simply by bending the wire 11, and can be easily attached to the support leg 7. There are excellent effects such as a stopper action and its release action being automatically obtained by rotating the direction.
[Brief description of the drawings]
FIG. 1 is a front view of a construction blackboard to which a supporting leg stopper according to the present invention is applied.
FIG. 2 is a rear view of the construction blackboard.
FIG. 3 is a side sectional view of the construction blackboard with the support legs pulled out.
FIG. 4 is an enlarged rear view of an upper end portion of a support leg equipped with a support stopper according to the present invention.
FIG. 5 is an external perspective view of a support leg stopper according to the present invention.
FIG. 6 is an explanatory diagram of a mounting procedure of the support leg stopper according to the embodiment.
FIG. 7 is an explanatory diagram of the operation of the same support leg stopper.
FIG. 8A is a rear view of a construction blackboard having a conventional configuration, and FIG. 8B is a side cross-sectional view of a state where a support leg is pulled out.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Construction blackboard 2 Blackboard surface 3 Substrate 4 Rectangular peripheral frame 4b Left and right frame rod 6 Bearing hole 7 Support leg 8 Support shaft part 10 Support leg stopper 11 Wire rod 12 Winding part 13 Specified end x Storage position y Pull-out position

Claims (1)

前面に黒板面を備えた基板の裏面に矩形状周枠が配設されてなる工事用黒板の、前記矩形状周枠の左右枠杆の内側面に形成された軸受孔に支軸部を回動可能に嵌入して後方向に引出し可能に設けられ、その回動操作により矩形状周枠内に収まる収納位置と、後方向に引出されて工事用黒板の立ち姿勢を保持する引出し位置とに変換される支脚に適用されるものであって、
線材の上部を巻回してその巻回部を前記支脚の支軸部に外嵌するとともに、該線材の下端部を前記支脚に係合させることにより、該線材を支脚とともに回動可能に設け、前記巻回部から線材の上端を斜め上方に突出させて、前記支脚の引出し位置で前記基板の裏面に当接してその引出し量を規定する規定端としたことを特徴とする工事用黒板の支脚ストッパー。
A supporting blackboard is turned around a bearing hole formed on the inner surface of the left and right frame of the rectangular peripheral frame of a construction blackboard having a rectangular peripheral frame disposed on the back surface of a board having a blackboard surface on the front surface. It is provided so that it can be moved and pulled out in the rear direction, and it is placed in a storage position that fits within the rectangular peripheral frame by its turning operation, and a drawer position that is pulled out in the rear direction and holds the standing position of the construction blackboard Applied to the support to be converted,
The upper part of the wire rod is wound and the winding portion is externally fitted to the support shaft portion of the support leg, and the lower end portion of the wire rod is engaged with the support leg so that the wire rod can be rotated together with the support leg. The support leg of the construction blackboard is characterized in that the upper end of the wire rod is protruded obliquely upward from the winding portion, and is a defined end that abuts against the back surface of the substrate at the position where the support leg is drawn to define the amount of drawing. stopper.
JP11155798A 1998-04-06 1998-04-06 Support blackboard stopper for construction Expired - Lifetime JP3984358B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11155798A JP3984358B2 (en) 1998-04-06 1998-04-06 Support blackboard stopper for construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11155798A JP3984358B2 (en) 1998-04-06 1998-04-06 Support blackboard stopper for construction

Publications (2)

Publication Number Publication Date
JPH11291690A JPH11291690A (en) 1999-10-26
JP3984358B2 true JP3984358B2 (en) 2007-10-03

Family

ID=14564417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11155798A Expired - Lifetime JP3984358B2 (en) 1998-04-06 1998-04-06 Support blackboard stopper for construction

Country Status (1)

Country Link
JP (1) JP3984358B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6160941B1 (en) * 2016-07-15 2017-07-12 美見 小泉 Construction blackboard

Also Published As

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JPH11291690A (en) 1999-10-26

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