WO2022045317A1 - Writing tool for circle drawing and instrument for circle drawing - Google Patents
Writing tool for circle drawing and instrument for circle drawing Download PDFInfo
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- WO2022045317A1 WO2022045317A1 PCT/JP2021/031634 JP2021031634W WO2022045317A1 WO 2022045317 A1 WO2022045317 A1 WO 2022045317A1 JP 2021031634 W JP2021031634 W JP 2021031634W WO 2022045317 A1 WO2022045317 A1 WO 2022045317A1
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- circle
- panel
- hole
- screw
- stationery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
Definitions
- the present invention relates to a stationery for drawing a circle using a shaft needle mounting hole for a rotation fulcrum and a brush tip mounting hole installed on a panel such as a ruler.
- Patent Documents 1 to 3 are those equipped with a through hole for attaching a shaft needle for a rotation fulcrum and a through hole for attaching a writing instrument to a panel such as a compass or a ruler.
- the problem of the present invention is that the diameter of a circle can be set steplessly even in a stationery for drawing a circle using a ruler or a panel, and the circle has a function of expanding and contracting according to the time of use and storage.
- the purpose is to realize and provide stationery for drawing.
- the means of the present invention for solving the above-mentioned problems is to provide a panel having a through hole for attaching a shaft needle as a rotation fulcrum at the time of drawing and a panel having a through hole for attaching a brush tip for drawing a circle.
- the diameter of the circle to be drawn can be set by connecting with a turnbuckle type telescopic device consisting of a single male screw equipped with a right-handed screw and a left-handed screw and a female screw attached to each of the right-handed screw and the left-handed screw. It is converted into a stepless type and the shape of the main body also expands and contracts.
- a connecting device having a telescopic function is formed by forming a panel having a through hole for mounting the shaft needle and a panel having a through hole for mounting the brush tip with a male screw and a female screw. It is designed to be connected.
- the turnbuckle type connecting device of the present invention consisting of a single male screw equipped with a right-handed screw and a left-handed screw and a female screw attached to each of the right-handed screw and the left-handed screw, for a rotation fulcrum for drawing a circle.
- the turnbuckle type male screw draws.
- the setting of the diameter of the circle can be converted steplessly. Further, since the stationery for drawing can be expanded and contracted by the above configuration, the main body can be retracted and stored at the time of storage. In addition, it is not necessary to use a stopper for setting the diameter by engaging the male screw and the female screw.
- the function to change the setting of the diameter of the circle steplessly and the function to expand and contract the main body are provided.
- a scale plate for displaying the diameter of the circle to be drawn can be easily installed as compared with a compass for drawing a circle.
- the diameter of the circle to be drawn can be increased by equipping a panel having a through hole for attaching the brush tip with a female screw for connection and having a plurality of panels having a through hole.
- the instrument for drawing a circle consisting of a male screw and a female screw including the turnbuckle type of the present invention can be equipped with a cutter knife, a router, a jigsaw and other cutting instruments in addition to a brush instrument.
- the same front view. It is a perspective view of the stationery for circular drawing using the connecting device which consists of a male screw and a female screw threaded in one direction of the present invention. It is a front view of a stationery for circular drawing using a connecting device consisting of a male screw and a female screw threaded in one direction.
- FIGS. 1 to 5 have a panel 2 provided with a through hole 1 for attaching a shaft needle for a rotation fulcrum during drawing, and a through hole 3 for attaching a writing tool for drawing a circle.
- the panel 4 is used as a turnbuckle type telescopic device consisting of a single male screw having a right-hand screw 5 and a left-hand screw 6 and female screws 7 and 8 attached to the right-hand screw 5 and the left-hand screw 6, respectively. Are connected.
- a turnbuckle type telescopic device a turnbuckle having a structure consisting of a single female screw having a right-hand screw and a left-hand screw and a male screw attached to each of the female screws can also be used.
- a measuring plate 9 having a scale for displaying the diameter of a circle is installed on a panel 2 provided with a through hole 1 for mounting a shaft needle for a rotation fulcrum.
- a panel 2 provided with a through hole 1 for attaching a shaft needle for a rotation fulcrum for circular drawing and a through hole 3 for attaching a brush tip of a brush instrument for circular drawing are provided.
- the provided panel 4 is connected by a telescopic device including a male screw 10 and a female screw 11 threaded in one direction.
Abstract
The present invention provides a writing tool for circle drawing and an instrument for circle drawing, in which: a panel comprising a through-hole for mounting a radial bar that serves as a rotational fulcrum for circle drawing and a panel comprising a through-hole for mounting a tip of a writing instrument for circle drawing are coupled by a connecting instrument that comprises a male screw and a female screw that are chased in one direction, or are coupled by a turnbuckle-type connecting instrument that comprises one male screw comprising a right screw and a left screw, and female screws mounted on the right screw and the left screw; and a function to steplessly convert the diameter of a circle to be drawn and a function to reduce the size of a body for storage are both provided.
Description
本発明は、定規等のパネルに設置された回転支点用の軸針装着孔と筆先装着孔を用いて円を描く円描用の文具に関する。
The present invention relates to a stationery for drawing a circle using a shaft needle mounting hole for a rotation fulcrum and a brush tip mounting hole installed on a panel such as a ruler.
従来の円描用の文具のなかには、コンパスとか、定規などのパネルに回転支点用の軸針装着用の貫通孔と筆記具の筆先装着用の貫通孔を備えたものがある。（例えば特許文献１~３）
Among the conventional stationery for circular drawing, there are those equipped with a through hole for attaching a shaft needle for a rotation fulcrum and a through hole for attaching a writing instrument to a panel such as a compass or a ruler. (For example, Patent Documents 1 to 3)
上述した特許文献１~３のような定規、あるいはパネルに回転支点用の貫通孔と筆先装着用の貫通孔を備える円描用の文具においては定規、あるいはパネルを縮少させることが困難なため径の最大設定によってはペンケースに収納できなくなるという問題があった。
また、特許文献１のように円の径が設定されている円描用の文具においてはコンパスのように無段式に円の径を設定することができないという問題があった。
上記問題点より本発明の課題は、定規あるいはパネルを用いての円描用の文具においても無段式に円の径の設定ができるとともに、使用時、収納時に応じて伸縮する機能を有する円描用の文具を実現して提供することが目的である。 It is difficult to shrink the ruler or panel in a ruler such asPatent Documents 1 to 3 described above, or a stationery for drawing a circle having a through hole for a rotation fulcrum and a through hole for attaching a brush tip to the panel. There was a problem that it could not be stored in the pen case depending on the maximum diameter setting.
Further, in the stationery for drawing a circle in which the diameter of the circle is set as inPatent Document 1, there is a problem that the diameter of the circle cannot be set steplessly like a compass.
From the above problems, the problem of the present invention is that the diameter of a circle can be set steplessly even in a stationery for drawing a circle using a ruler or a panel, and the circle has a function of expanding and contracting according to the time of use and storage. The purpose is to realize and provide stationery for drawing.
また、特許文献１のように円の径が設定されている円描用の文具においてはコンパスのように無段式に円の径を設定することができないという問題があった。
上記問題点より本発明の課題は、定規あるいはパネルを用いての円描用の文具においても無段式に円の径の設定ができるとともに、使用時、収納時に応じて伸縮する機能を有する円描用の文具を実現して提供することが目的である。 It is difficult to shrink the ruler or panel in a ruler such as
Further, in the stationery for drawing a circle in which the diameter of the circle is set as in
From the above problems, the problem of the present invention is that the diameter of a circle can be set steplessly even in a stationery for drawing a circle using a ruler or a panel, and the circle has a function of expanding and contracting according to the time of use and storage. The purpose is to realize and provide stationery for drawing.
上記課題を解決するための本発明の手段は、円描時の回転支点とする軸針装着用の貫通孔を備えたパネルと円描用の筆先装着用の貫通孔を備えたパネルとを、右ネジと左ネジを備えた一本の雄ネジと前記右ネジと左ネジのそれぞれに装着された雌ネジからなるターンバックル式の伸縮器具にて連結することにより、描く円の径の設定を無段式に変換するとともに本体形状も伸縮するようにしたものである。
また、第二の手段としては、前記軸針装着用の貫通孔を備えたパネルと筆先装着用の貫通孔を備えたパネルとを雄ネジと雌ネジにて構成する伸縮機能を有する連結器具にて連結するようにしたものである。 The means of the present invention for solving the above-mentioned problems is to provide a panel having a through hole for attaching a shaft needle as a rotation fulcrum at the time of drawing and a panel having a through hole for attaching a brush tip for drawing a circle. The diameter of the circle to be drawn can be set by connecting with a turnbuckle type telescopic device consisting of a single male screw equipped with a right-handed screw and a left-handed screw and a female screw attached to each of the right-handed screw and the left-handed screw. It is converted into a stepless type and the shape of the main body also expands and contracts.
Further, as a second means, a connecting device having a telescopic function is formed by forming a panel having a through hole for mounting the shaft needle and a panel having a through hole for mounting the brush tip with a male screw and a female screw. It is designed to be connected.
また、第二の手段としては、前記軸針装着用の貫通孔を備えたパネルと筆先装着用の貫通孔を備えたパネルとを雄ネジと雌ネジにて構成する伸縮機能を有する連結器具にて連結するようにしたものである。 The means of the present invention for solving the above-mentioned problems is to provide a panel having a through hole for attaching a shaft needle as a rotation fulcrum at the time of drawing and a panel having a through hole for attaching a brush tip for drawing a circle. The diameter of the circle to be drawn can be set by connecting with a turnbuckle type telescopic device consisting of a single male screw equipped with a right-handed screw and a left-handed screw and a female screw attached to each of the right-handed screw and the left-handed screw. It is converted into a stepless type and the shape of the main body also expands and contracts.
Further, as a second means, a connecting device having a telescopic function is formed by forming a panel having a through hole for mounting the shaft needle and a panel having a through hole for mounting the brush tip with a male screw and a female screw. It is designed to be connected.
本発明の、右ネジと左ネジを備えた一本の雄ネジと前記右ネジと左ネジのそれぞれに装着された雌ネジからなるターンバックル式の連結器具にて、円描用の回転支点用の軸針を装着するための貫通孔を備えたパネルと円描用の筆記具の筆先を装着するための貫通孔を備えたパネルとを連結することにより前記ターンバックル式の雄ネジの回転により描く円の径の設定を無段式に変換させることができる。
また、上記構成により円描用の文具を伸縮させることができるため収納時に本体を縮少して収納することができる。
また、雄ネジと雌ネジかみ合わせにより径設定の止め具を用いる必要がない。
上記、ターンバックル式の連結器具を一方向にネジ切りされた雄ネジと雌ネジからなる連結器具を用いても、円の径の設定を無段式に変換させる機能と本体を伸縮させる機能を備えることができる。
また、本発明の円描用の文具においては、描く円の径を表示するための目盛り板を、円描用のコンパスに比して容易に設置することができる。
また、筆先装着用の貫通孔を備えたパネルに連結用の雌ネジを装備して貫通孔を備えたパネルを複数にすることにより描く円の径を大きくすることができる。
また、本発明のターンバックル式を含む雄ネジと雌ネジからなる円描用の器具は、筆器具のほか、カッターナイフ、ルーター、ジグソーなどの切断器を装着することもできる。 The turnbuckle type connecting device of the present invention consisting of a single male screw equipped with a right-handed screw and a left-handed screw and a female screw attached to each of the right-handed screw and the left-handed screw, for a rotation fulcrum for drawing a circle. By connecting a panel with a through hole for attaching the shaft needle and a panel with a through hole for attaching the tip of a writing tool for drawing, the turnbuckle type male screw draws. The setting of the diameter of the circle can be converted steplessly.
Further, since the stationery for drawing can be expanded and contracted by the above configuration, the main body can be retracted and stored at the time of storage.
In addition, it is not necessary to use a stopper for setting the diameter by engaging the male screw and the female screw.
Even if the above-mentioned turnbuckle type connecting device is used as a connecting device consisting of a male screw and a female screw threaded in one direction, the function to change the setting of the diameter of the circle steplessly and the function to expand and contract the main body are provided. Can be prepared.
Further, in the stationery for drawing a circle of the present invention, a scale plate for displaying the diameter of the circle to be drawn can be easily installed as compared with a compass for drawing a circle.
Further, the diameter of the circle to be drawn can be increased by equipping a panel having a through hole for attaching the brush tip with a female screw for connection and having a plurality of panels having a through hole.
Further, the instrument for drawing a circle consisting of a male screw and a female screw including the turnbuckle type of the present invention can be equipped with a cutter knife, a router, a jigsaw and other cutting instruments in addition to a brush instrument.
また、上記構成により円描用の文具を伸縮させることができるため収納時に本体を縮少して収納することができる。
また、雄ネジと雌ネジかみ合わせにより径設定の止め具を用いる必要がない。
上記、ターンバックル式の連結器具を一方向にネジ切りされた雄ネジと雌ネジからなる連結器具を用いても、円の径の設定を無段式に変換させる機能と本体を伸縮させる機能を備えることができる。
また、本発明の円描用の文具においては、描く円の径を表示するための目盛り板を、円描用のコンパスに比して容易に設置することができる。
また、筆先装着用の貫通孔を備えたパネルに連結用の雌ネジを装備して貫通孔を備えたパネルを複数にすることにより描く円の径を大きくすることができる。
また、本発明のターンバックル式を含む雄ネジと雌ネジからなる円描用の器具は、筆器具のほか、カッターナイフ、ルーター、ジグソーなどの切断器を装着することもできる。 The turnbuckle type connecting device of the present invention consisting of a single male screw equipped with a right-handed screw and a left-handed screw and a female screw attached to each of the right-handed screw and the left-handed screw, for a rotation fulcrum for drawing a circle. By connecting a panel with a through hole for attaching the shaft needle and a panel with a through hole for attaching the tip of a writing tool for drawing, the turnbuckle type male screw draws. The setting of the diameter of the circle can be converted steplessly.
Further, since the stationery for drawing can be expanded and contracted by the above configuration, the main body can be retracted and stored at the time of storage.
In addition, it is not necessary to use a stopper for setting the diameter by engaging the male screw and the female screw.
Even if the above-mentioned turnbuckle type connecting device is used as a connecting device consisting of a male screw and a female screw threaded in one direction, the function to change the setting of the diameter of the circle steplessly and the function to expand and contract the main body are provided. Can be prepared.
Further, in the stationery for drawing a circle of the present invention, a scale plate for displaying the diameter of the circle to be drawn can be easily installed as compared with a compass for drawing a circle.
Further, the diameter of the circle to be drawn can be increased by equipping a panel having a through hole for attaching the brush tip with a female screw for connection and having a plurality of panels having a through hole.
Further, the instrument for drawing a circle consisting of a male screw and a female screw including the turnbuckle type of the present invention can be equipped with a cutter knife, a router, a jigsaw and other cutting instruments in addition to a brush instrument.
以下、本発明の実施の形態を図１~図５に基づいて説明する。なお、本発明は本実施形態に限定されるものではない。
図１~図３においては、円描時の回転支点用の軸針を装着するための貫通孔１を備えたパネル２と、円描用の筆記具の筆先を装着するための貫通孔３を備えたパネル４とを、右ネジ５と左ネジ６を備えた一本の雄ネジと前記右ネジ５と左ネジ６のそれぞれに装着された雌ネジ７、８からなるターンバックル式の伸縮器具にて連結している。
また、ターンバックル式の伸縮器具は、右ネジと左ネジを備えた一本の雌ネジと前記雌ネジのそれぞれに装着された雄ネジからなる構成のターンバックルを用いることもできる。
また、回転支点用の軸針を装着するための貫通孔１を備えたパネル２に円の径を表示するための目盛りを備えた計測板９を設置したものである。
図４~図５においては、円描用の回転支点用の軸針を装着するための貫通孔１を備えたパネル２と、円描用の筆器具の筆先を装着するための貫通孔３を備えたパネル４とを、一方向にネジ切りされた雄ネジ１０と雌ネジ１１からなる伸縮器具にて連結している。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5. The present invention is not limited to the present embodiment.
1 to 3 have apanel 2 provided with a through hole 1 for attaching a shaft needle for a rotation fulcrum during drawing, and a through hole 3 for attaching a writing tool for drawing a circle. The panel 4 is used as a turnbuckle type telescopic device consisting of a single male screw having a right-hand screw 5 and a left-hand screw 6 and female screws 7 and 8 attached to the right-hand screw 5 and the left-hand screw 6, respectively. Are connected.
Further, as the turnbuckle type telescopic device, a turnbuckle having a structure consisting of a single female screw having a right-hand screw and a left-hand screw and a male screw attached to each of the female screws can also be used.
Further, a measuring plate 9 having a scale for displaying the diameter of a circle is installed on apanel 2 provided with a through hole 1 for mounting a shaft needle for a rotation fulcrum.
In FIGS. 4 to 5, apanel 2 provided with a through hole 1 for attaching a shaft needle for a rotation fulcrum for circular drawing and a through hole 3 for attaching a brush tip of a brush instrument for circular drawing are provided. The provided panel 4 is connected by a telescopic device including a male screw 10 and a female screw 11 threaded in one direction.
図１~図３においては、円描時の回転支点用の軸針を装着するための貫通孔１を備えたパネル２と、円描用の筆記具の筆先を装着するための貫通孔３を備えたパネル４とを、右ネジ５と左ネジ６を備えた一本の雄ネジと前記右ネジ５と左ネジ６のそれぞれに装着された雌ネジ７、８からなるターンバックル式の伸縮器具にて連結している。
また、ターンバックル式の伸縮器具は、右ネジと左ネジを備えた一本の雌ネジと前記雌ネジのそれぞれに装着された雄ネジからなる構成のターンバックルを用いることもできる。
また、回転支点用の軸針を装着するための貫通孔１を備えたパネル２に円の径を表示するための目盛りを備えた計測板９を設置したものである。
図４~図５においては、円描用の回転支点用の軸針を装着するための貫通孔１を備えたパネル２と、円描用の筆器具の筆先を装着するための貫通孔３を備えたパネル４とを、一方向にネジ切りされた雄ネジ１０と雌ネジ１１からなる伸縮器具にて連結している。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5. The present invention is not limited to the present embodiment.
1 to 3 have a
Further, as the turnbuckle type telescopic device, a turnbuckle having a structure consisting of a single female screw having a right-hand screw and a left-hand screw and a male screw attached to each of the female screws can also be used.
Further, a measuring plate 9 having a scale for displaying the diameter of a circle is installed on a
In FIGS. 4 to 5, a
１，３ 貫通孔
２，４ パネル
５ 右ネジ
６ 左ネジ
７，８ 雌ネジ
９ 計測板
１０ 雄ネジ
１１ 雌ネジ
１２，１３ 回転用つまみ部 1,3 Through hole 2,4 Panel 5 Right-hand screw 6 Left- hand screw 7,8 Female screw 9 Measuring plate 10 Male screw 11 Female screw 12,13 Rotation knob
２，４ パネル
５ 右ネジ
６ 左ネジ
７，８ 雌ネジ
９ 計測板
１０ 雄ネジ
１１ 雌ネジ
１２，１３ 回転用つまみ部 1,3 Through
Claims (4)
- 円描時の回転支点とする軸針を装着するための軸針挿入用の貫通孔を備えたパネルと円描用のボールペン、鉛筆等の筆記具の筆先を装着するための筆先挿入用の貫通孔を備えたパネルとを、右ネジと左ネジを備えた一本の雄ネジと前記右ネジ左ネジのそれぞれに装着された雌ネジからなるターンバックル式の伸縮器具にて連結したことを特徴とする円描時の円の径設定を無段式に変換する機能と使用時、収納時の伸縮機能を備えた円描用の文具。 A panel with a through hole for inserting an axis needle to attach an axis needle that serves as a rotation fulcrum during circular drawing, and a through hole for inserting a tip for attaching a writing tool such as a ball pen or pencil for drawing a circle. It is characterized by connecting the panel equipped with a turnbuckle type telescopic device consisting of a single male screw equipped with a right-handed screw and a left-handed screw and a female screw attached to each of the right-handed left-handed screw. A stationery for drawing circles that has a function to convert the diameter setting of the circle when drawing a circle steplessly and a function to expand and contract when using and storing.
- 円描時の回転支点とする軸針を装着するための軸針挿入用の貫通孔を備えたパネルと円描用のボールペン、鉛筆等の筆記具の筆先を装着するための筆先挿入用の貫通孔を備えたパネルとを、一方向にネジ切りされた雄ネジと雌ネジからなる伸縮器具にて連結したことを特徴とする円描用の文具。 A panel with a through hole for inserting the shaft needle to attach the shaft needle as a rotation fulcrum during drawing, and a through hole for inserting the tip of a writing tool such as a ballpoint pen or pencil for drawing a circle. A stationery for drawing circles, which is characterized by connecting a panel equipped with a panel with a telescopic device consisting of a male screw and a female screw threaded in one direction.
- 請求項１又は２の軸針挿入用の貫通孔を備えたパネルに、軸針と筆先の間隔を表示するための目盛りを備えた計測板を装備したことを特徴とする円描用の文具。 A stationery for drawing circles, characterized in that a panel provided with a through hole for inserting the shaft needle according to claim 1 or 2 is equipped with a measuring plate provided with a scale for displaying the distance between the shaft needle and the brush tip.
- 請求項１又は２の雄ネジと雌ネジからなる円描時の円の径設定を無段式に変換する機能と使用時収納時の伸縮機能を備えた円描用の文具の構成を用いて、筆記具の筆先挿入用の貫通孔を備えるパネルに、カッターナイフ、ルーター、ジグソーなどの切断器を装着して円形部材を切り出すための器具としたことを特徴とする円描器具。 Using the stationery structure for circle drawing, which has a function of steplessly converting the diameter setting of a circle consisting of a male screw and a female screw of claim 1 or 2 and an expansion / contraction function at the time of storage during use. , A circular drawing instrument characterized by attaching a cutter knife, router, jigsaw, or other cutting device to a panel equipped with a through hole for inserting the tip of a writing instrument to cut out a circular member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-168754 | 2020-08-26 | ||
| JP2020168754A JP6999884B1 (en) | 2020-08-26 | 2020-08-26 | Stationery for drawing circles, and equipment for drawing circles. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022045317A1 true WO2022045317A1 (en) | 2022-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/031634 WO2022045317A1 (en) | 2020-08-26 | 2021-08-24 | Writing tool for circle drawing and instrument for circle drawing |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6999884B1 (en) |
| WO (1) | WO2022045317A1 (en) |
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|---|---|---|---|---|
| JPS49137640U (en) * | 1973-03-26 | 1974-11-27 | ||
| JPS5821489U (en) * | 1981-08-04 | 1983-02-09 | 中村 稔 | A ruler that can be used as a compass |
| JPS63125588U (en) * | 1987-02-10 | 1988-08-16 | ||
| JPH0268191U (en) * | 1988-11-12 | 1990-05-23 | ||
| JP3030895U (en) * | 1994-05-31 | 1996-11-12 | 祐造 田中 | Ruler that also serves as a compass |
| US7383635B1 (en) * | 2007-01-23 | 2008-06-10 | Learning Resources, Inc. | Multipurpose drawing tool |
| KR20160000680U (en) * | 2014-08-20 | 2016-03-02 | 조윤희 | Compasses and ruler in one |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0388790U (en) * | 1989-12-26 | 1991-09-10 | ||
| JPH0649098U (en) * | 1992-08-18 | 1994-07-05 | 洋一 上田 | Round universal measuring machine |
| JP3079438U (en) * | 2001-02-05 | 2001-08-17 | 祐造 田中 | Sliding compass for drawing oversized circles without traces |
| CN201385511Y (en) * | 2009-02-20 | 2010-01-20 | 李维堂 | Combined compasses |
| CN201769556U (en) * | 2010-09-15 | 2011-03-23 | 刘尚书 | Compasses capable of facilitating radius determination |
-
2020
- 2020-08-26 JP JP2020168754A patent/JP6999884B1/en active Active
-
2021
- 2021-08-24 WO PCT/JP2021/031634 patent/WO2022045317A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49137640U (en) * | 1973-03-26 | 1974-11-27 | ||
| JPS5821489U (en) * | 1981-08-04 | 1983-02-09 | 中村 稔 | A ruler that can be used as a compass |
| JPS63125588U (en) * | 1987-02-10 | 1988-08-16 | ||
| JPH0268191U (en) * | 1988-11-12 | 1990-05-23 | ||
| JP3030895U (en) * | 1994-05-31 | 1996-11-12 | 祐造 田中 | Ruler that also serves as a compass |
| US7383635B1 (en) * | 2007-01-23 | 2008-06-10 | Learning Resources, Inc. | Multipurpose drawing tool |
| KR20160000680U (en) * | 2014-08-20 | 2016-03-02 | 조윤희 | Compasses and ruler in one |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022039878A (en) | 2022-03-10 |
| JP6999884B1 (en) | 2022-01-19 |
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