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JP2018167472A - fountain pen - Google Patents

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JP2018167472A
JP2018167472A JP2017066296A JP2017066296A JP2018167472A JP 2018167472 A JP2018167472 A JP 2018167472A JP 2017066296 A JP2017066296 A JP 2017066296A JP 2017066296 A JP2017066296 A JP 2017066296A JP 2018167472 A JP2018167472 A JP 2018167472A
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pen
lid
tip
shaft
fountain
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JP6908409B2 (en
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守屋 知巳
Tomomi Moriya
知巳 守屋
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Pilot Corp
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Pilot Corp
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Abstract

【課題】蓋体13に対してペンポイント61aが摺接しない構造の開閉蓋付の万年筆1を得る。【解決手段】軸筒4の内部にペン61とペン芯62とを重ねたペン先6を前方に備えた筆記体8を前後動可能に収容し、軸筒4内に配設した弾発部材14の弾発力により軸筒4の前方を閉塞する蓋体13を備え、軸筒4に設けた操作部5を操作することにより筆記体8の前方部で蓋体13を押動して開放する構造の万年筆1であって、蓋体13の裏面13cに、筆記体8が前進する際にペン芯62が当接する突出部13dを設ける。【選択図】図2PROBLEM TO BE SOLVED: To obtain a fountain pen 1 with an opening / closing lid having a structure in which a pen point 61a does not slide against a lid body 13. SOLUTION: A cursive body 8 having a pen tip 6 in which a pen 61 and a pen core 62 are overlapped inside a barrel 4 is housed in a front-rear manner so as to be movable back and forth, and an elastic member arranged in the barrel 4. A lid 13 for closing the front of the barrel 4 by the elastic force of 14 is provided, and the lid 13 is pushed and opened by the front portion of the cursive 8 by operating the operation unit 5 provided on the cylinder 4. A fountain pen 1 having a structure to be provided is provided with a protruding portion 13d on the back surface 13c of the lid 13 with which the pen core 62 comes into contact when the cursive 8 advances. [Selection diagram] Fig. 2

Description

本発明は、軸筒の内部に筆記体を収容し、開閉可能な蓋体で軸筒の前方を密閉する構造の万年筆に関する。   The present invention relates to a fountain pen having a structure in which a writing body is accommodated in a shaft cylinder and the front of the shaft cylinder is sealed with a lid that can be opened and closed.

従来より、軸筒の前方に蓋体を設けることでインキの乾燥防止や埃の侵入を防止する構造の万年筆は知られており、当該万年筆は軸筒に設けた操作体を操作することにより、軸筒内の筆記体を前進移動させてペン先で蓋体を押し開き、軸筒からペン先を突出させる構造の万年筆が、特許文献1(実開昭58−39889号公報)や特許文献2(特開2007−118347号公報)で開示されている。   Conventionally, a fountain pen with a structure that prevents ink from drying and dust from entering by providing a lid in front of the shaft cylinder is known, and the fountain pen is operated by operating an operation body provided on the shaft cylinder. A fountain pen having a structure in which the writing body in the shaft cylinder is moved forward to push open the lid with the pen tip and the pen tip protrudes from the shaft cylinder is disclosed in Patent Document 1 (Japanese Utility Model Publication No. 58-39889) and Patent Document 2. (Japanese Unexamined Patent Application Publication No. 2007-118347).

実開昭58−39889号公報Japanese Utility Model Publication No. 58-39889 特開2007−118347号公報JP 2007-118347 A

しかしながら、特許文献1や特許文献2に見られる万年筆では、磨耗を防止するためにペンの先端へ設けた硬いペンポイントが蓋体に摺接しながら、当該蓋体を開閉する構造になっており、筆記体が前進する際には、蓋体の裏面にペンポイントが摺接して該蓋体の裏面をすり減らすような力が働き、また筆記体が後退する際には、蓋体の前端部にペンポイントが触れてしまうこともある。
蓋体の裏面が硬いペンポイントの摺接で削れてしまった場合には、蓋体による気密性が悪くなってしまう虞があり、また筆記体が後退する際にペンポイントが蓋体に引っ掛かってしまった場合には、操作が滑らかでなくなってしまう虞があった。
However, the fountain pens found in Patent Document 1 and Patent Document 2 have a structure in which the lid is opened and closed while the hard pen point provided at the tip of the pen is in sliding contact with the lid to prevent wear. When the cursive body moves forward, the pen point slidably contacts the back surface of the lid body, and a force is applied so that the back surface of the lid body is abraded. The point may be touched.
If the back of the lid is scraped by a hard pen point sliding contact, there is a risk that the air tightness of the lid will deteriorate, and the pen point will be caught by the lid when the writing body is retracted. If this happens, the operation may not be smooth.

本発明では、蓋体に対してペンポイントが摺接しない構造の開閉蓋付の万年筆を得ることを目的とする。   It is an object of the present invention to obtain a fountain pen with an open / close lid having a structure in which a pen point does not slide on a lid.

本発明は、
「軸筒の内部にペンとペン芯とを重ねたペン先を前方に有した筆記体を前後動可能に収容し、該軸筒内に配設した弾発部材の弾発力により前記軸筒の前方を閉塞する蓋体を備え、前記軸筒に設けた操作部を操作することにより前記筆記体の前方部で前記蓋体を押動して開放する構造の万年筆であって、
前記蓋体の裏面に、前記筆記体が前進する際に前記ペン芯が当接する突出部を設けたことを特徴とした万年筆。」である。
The present invention
“A shaft with a pen tip in which a pen and a pen core are stacked inside is accommodated so as to be movable forward and backward, and the shaft tube is caused by the resilience of a resilient member disposed in the shaft tube. A fountain pen having a structure in which the lid is pushed and opened at the front portion of the writing body by operating an operation portion provided on the shaft cylinder, the lid body closing the front of
A fountain pen characterized in that a protrusion is provided on the back surface of the lid so that the pen core contacts when the writing body advances. Is.

蓋体の裏側に設ける突出部は、筆記体が前進する際に、突出部とペン芯とを摺接させことで、ペンポイントを蓋体に摺接させない形態とすればよく、形状や大きさや材質に限定はないが、金属製の板状の蓋体をプレス成形して一体で突出部を形成することにより、気密性が高い蓋体を簡単な構造で得ることが可能となる。   The protrusion provided on the back side of the lid may be configured so that the pen point does not slide against the lid by sliding the protrusion and the pen core when the writing body moves forward. Although the material is not limited, it is possible to obtain a highly airtight lid with a simple structure by press-molding a metal plate-like lid and integrally forming the protruding portion.

本発明によれば、蓋体に対してペンポイントが摺接しない構造の開閉蓋付の万年筆を得ることができる。   ADVANTAGE OF THE INVENTION According to this invention, the fountain pen with an opening-and-closing lid of the structure where a pen point does not slidably contact with a cover body can be obtained.

図1は、本実施例の万年筆を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a fountain pen of this embodiment. 図2は、要部拡大図である。FIG. 2 is an enlarged view of a main part. 図3は、図2の内部を前方から見た図である。FIG. 3 is a view of the inside of FIG. 2 as viewed from the front. 図4は、図2のA−A線断面図である。4 is a cross-sectional view taken along line AA in FIG. 図5は、ペン先が没入した状態を示す前方断面図である。FIG. 5 is a front sectional view showing a state in which the pen tip is immersed. 図6は、ペン先が没入した状態における後方断面図である。FIG. 6 is a rear sectional view in a state where the pen tip is immersed. 図7は、ペン先が突出した状態における後方断面図である。FIG. 7 is a rear sectional view in a state where the pen tip protrudes. 図8は、ペン先が突出していく第一の状態を示す前方断面図である。FIG. 8 is a front sectional view showing a first state in which the pen tip protrudes. 図9は、ペン先が突出していく第二の状態を示す前方断面図である。FIG. 9 is a front sectional view showing a second state in which the pen tip protrudes. 図10は、ペン先が突出していく第三の状態を示す前方断面図である。FIG. 10 is a front sectional view showing a third state where the pen tip protrudes. 図11は、ペン先が突出した状態を示す前方断面図である。FIG. 11 is a front sectional view showing a state where the pen tip protrudes.

次に図を用いて、本実施例の万年筆について説明を行う。
本実施例では、ペン先がある方を前方と表現し反対側を後方と表現する。
図1は、本実施例の万年筆を示す縦断面図で、図2は、要部拡大図である。図3は、図2の内部を前方から見た図で、図4は、図2のA−A線断面図である。図5は、ペン先が没入した状態における前方断面図であり、図6は、ペン先が没入した状態における後方断面図である。
Next, the fountain pen of this embodiment will be described with reference to the drawings.
In this embodiment, the one with the pen tip is expressed as the front and the opposite side is expressed as the rear.
FIG. 1 is a longitudinal sectional view showing a fountain pen of this embodiment, and FIG. 2 is an enlarged view of a main part. 3 is a view of the inside of FIG. 2 as viewed from the front, and FIG. 4 is a cross-sectional view taken along line AA of FIG. FIG. 5 is a front sectional view in a state where the pen tip is immersed, and FIG. 6 is a rear sectional view in a state where the pen tip is immersed.

万年筆1は、前軸2と後軸3とを螺合した軸筒4の後方部にノック体5を配設し、ペン先6の後方にインキタンク7を備えた筆記体8を内部に収容している。
前軸2の前方部には先端開口9aを有する先端カバー9を固設し一体としてある。
また、先端カバー9の内側となる前軸2の前方部には中空パイプ10を装着してあり、中空パイプ10の前方には弾性を有し前後が開口する弾性先首11を装着し、弾性先首11の前端傾斜面11aを押さえバネ12により弾発された蓋体13で密閉してある。
尚、筆記体8は前軸2の内部に配設したスプリング14により後方へ弾発されている。スプリング14は、筆記体8の外段8aと前軸2の内段2aとの間に配設してある。
The fountain pen 1 has a knock body 5 disposed in the rear part of a shaft cylinder 4 in which a front shaft 2 and a rear shaft 3 are screwed together, and a writing body 8 having an ink tank 7 behind the pen tip 6 is accommodated therein. doing.
A front end cover 9 having a front end opening 9a is fixed and integrated with the front portion of the front shaft 2.
A hollow pipe 10 is attached to the front portion of the front shaft 2 that is inside the tip cover 9, and an elastic front neck 11 that is elastic and has an opening at the front and rear is attached to the front of the hollow pipe 10. The front end inclined surface 11 a of the front neck 11 is sealed with a lid 13 that is elastically pressed by a holding spring 12.
Note that the cursive body 8 is ejected rearward by a spring 14 disposed inside the front shaft 2. The spring 14 is disposed between the outer stage 8 a of the writing body 8 and the inner stage 2 a of the front shaft 2.

図に示す通り、本実施例の万年筆1は、押さえバネ12として捻りコイルバネを使用している。押さえバネ12は、第一アーム12aを蓋体13の係止部13aに係止してあり、コイル部12bを蓋体13の支持部13bと共に中空パイプ10に固設した軸棒15で軸着してあり、第二アーム12cを中空パイプ10の側面に当接させている。   As shown in the figure, the fountain pen 1 of this embodiment uses a torsion coil spring as the holding spring 12. The holding spring 12 has the first arm 12 a locked to the locking portion 13 a of the lid 13, and the coil portion 12 b is attached to the hollow pipe 10 together with the support portion 13 b of the lid 13 with a shaft 15. The second arm 12c is in contact with the side surface of the hollow pipe 10.

後軸3の後端開口部3aより突出したノック体5は、有底の薄肉の金属材からなるノックカバー16を両端が開口した筒状の樹脂材からなるノック部材17に被着してある。また、ノック部材17の内部には、筆記体8の後端に当接したスライダ18を摺動可能に配設してあり、スライダ18とノック部材17との間にはバネ19を配設し双方が離間する方向へ弾発してある。尚、スライダ18は後端に凸部18aを形成しノック部材17の内面には凸部17aを形成して当接するようにしてある。   The knock body 5 protruding from the rear end opening 3a of the rear shaft 3 has a knock cover 16 made of a thin metal material with a bottom attached to a knock member 17 made of a cylindrical resin material having both ends opened. . In addition, a slider 18 in contact with the rear end of the writing body 8 is slidably disposed inside the knock member 17, and a spring 19 is disposed between the slider 18 and the knock member 17. Both are projecting away. The slider 18 is formed with a convex portion 18a at the rear end and is in contact with the inner surface of the knock member 17 by forming the convex portion 17a.

また、ノック部材17には、前端部に第一大径部17bを形成し、ノック体5を軸筒4に配設した状態で後軸3の内側となる位置に第二大径部17cを形成し、後端部に薄肉の第三大径部17dを形成してある。図に示すようにノック部材17とノックカバー16とは、ノックカバー16の内面16aにノック部材17の第二大径部17cと第三大径部17dとが密接するように圧入してある。尚、ノックカバー16を装着した状態でノック部材17の第一大径部17bはノックカバー16の前端から突出している。また、ノック部材17の第一大径部17bの外面には円周状の溝部17eを設けてあり、溝部17eにはOリング20を嵌着してある。図に示すように、スプリング14で弾発された筆記体8に当接したスライダ18とバネ19の弾発力によりノック体5が後退し、後軸4の後部内面4aにOリング20が密着した状態となっている。   Further, the knock member 17 is formed with a first large-diameter portion 17b at the front end, and a second large-diameter portion 17c is formed at a position inside the rear shaft 3 in a state where the knock body 5 is disposed on the shaft cylinder 4. The thin third large diameter portion 17d is formed at the rear end portion. As shown in the figure, the knock member 17 and the knock cover 16 are press-fitted to the inner surface 16a of the knock cover 16 so that the second large diameter portion 17c and the third large diameter portion 17d of the knock member 17 are in close contact with each other. The first large diameter portion 17 b of the knock member 17 protrudes from the front end of the knock cover 16 with the knock cover 16 attached. Further, a circumferential groove portion 17e is provided on the outer surface of the first large diameter portion 17b of the knock member 17, and an O-ring 20 is fitted into the groove portion 17e. As shown in the figure, the knock body 5 is retracted by the elastic force of the slider 18 and spring 19 that are in contact with the writing body 8 that is springed by the spring 14, and the O-ring 20 is in close contact with the rear inner surface 4 a of the rear shaft 4. It has become a state.

図7は、ノック体をノック操作したときの後部拡大図である。図に示すように軸筒4の後部にあるノック体5を前方へ押圧することにより、詳述はしないが、軸筒内に配した回転カム機構(図示せず)が作動して、筆記体8のペン先6が前方移動しながら蓋体13が軸棒15を軸心に回転して開かれる(図11参照)。   FIG. 7 is an enlarged view of the rear part when the knocking body is knocked. As shown in the figure, by pressing the knock body 5 at the rear part of the shaft cylinder 4 forward, a rotating cam mechanism (not shown) arranged in the shaft cylinder is activated, and the writing body is not described in detail. The lid 13 is opened by rotating the shaft 15 about the shaft 15 while the eight nibs 6 move forward (see FIG. 11).

図11を用いて前記操作時における万年筆の前方部を説明すると、筆記体8のペン先6の前方移動によって弾性先首11の前端傾斜面11aを密閉していた蓋体13が開かれ、先端カバー9の先端開口9aからペン先6が突出される。この時、スプリング14は、前軸2の内面に形成した突部2aと筆記体8の段部8aとの間で圧縮される。   When the front part of the fountain pen at the time of the operation is described with reference to FIG. 11, the lid 13 that has sealed the front end inclined surface 11 a of the elastic front neck 11 is opened by the forward movement of the pen tip 6 of the writing body 8. The pen tip 6 protrudes from the tip opening 9 a of the cover 9. At this time, the spring 14 is compressed between the protrusion 2 a formed on the inner surface of the front shaft 2 and the step 8 a of the writing body 8.

再度ノック体5をノック操作することにより、ペン先6は先端開口9aに没入し、押さえバネ12の弾発力により蓋体13がニトリルゴムからなる弾性先首11の傾斜前端面11aに密接して軸筒を密閉する(図2、図5参照)。   By knocking the knocking body 5 again, the pen tip 6 is immersed in the tip opening 9a, and the cover 13 is brought into close contact with the inclined front end surface 11a of the elastic front neck 11 made of nitrile rubber by the elastic force of the holding spring 12. The shaft tube is sealed (see FIGS. 2 and 5).

本実施例のペン先6は、ペン61とペン芯62とで構成し、ペン61の先端には、ビッカース硬さが700HVのオスミウム基合金で成形したペンポイント61aを設けてあり、耐摩耗性を向上させている。また、蓋体13の裏面13cには、筆記体8が前進する際にペン芯62が当接する突出部13dを設けてあり、筆記体8が前進する際には、ペンポイント61aが蓋体13の裏面13cに摺接することなく、ペン先6を先端開口21aから突出させることができる。
本実施例の突出部13dは、ビッカース硬さが200HVのステンレスで成形した板状の蓋体13をプレス成形で一体成形しており、突出部13dの後方及び前方は、ペン芯62が摺接しやすいように、後方傾斜面13e及び前方傾斜面13fを設けてある。
The pen tip 6 of the present embodiment is composed of a pen 61 and a pen core 62, and the tip of the pen 61 is provided with a pen point 61a formed of an osmium-based alloy having a Vickers hardness of 700 HV. Has improved. Further, the back surface 13c of the lid 13 is provided with a protruding portion 13d with which the pen core 62 abuts when the writing body 8 moves forward. When the writing body 8 moves forward, the pen point 61a becomes the lid body 13. The pen nib 6 can be protruded from the tip opening 21a without being brought into sliding contact with the back surface 13c.
The protruding portion 13d of this embodiment is formed by integrally forming a plate-like lid body 13 formed of stainless steel having a Vickers hardness of 200 HV by press molding. The pen core 62 is in sliding contact with the rear and front of the protruding portion 13d. In order to facilitate, a rear inclined surface 13e and a front inclined surface 13f are provided.

具体的に、ペン先6が没入状態から突出状態になるまでの過程を、図5及び図8〜図11を用いて説明すると、図5に示すように、ペン先6が完全に軸筒4内に没入した状態(ノック体5が図6の状態)では、ペン先6のペン61及びペン芯62は、蓋体13の裏面13cから離間した状態であり、ノック体5を前進させることで、ペン先6が徐々に前進し、図8に示したペン先が突出していく第一の状態となり、図9に示したペン先が突出していく第二の状態となり、図10に示したペン先が突出していく第三の状態となり、図11のペン先が突出した状態(ノック体5が図7の状態)となる。   Specifically, the process until the pen tip 6 changes from the immersive state to the protruding state will be described with reference to FIGS. 5 and 8 to 11. As shown in FIG. The pen 61 and the pen core 62 of the pen tip 6 are separated from the back surface 13c of the lid 13 in the state of being immersed in the state (the knock body 5 is the state shown in FIG. 6). The pen tip 6 gradually moves forward, the first state shown in FIG. 8 protrudes, and the pen tip shown in FIG. 9 enters the second state, and the pen shown in FIG. A third state in which the tip protrudes becomes a state in which the pen tip in FIG. 11 protrudes (the knock body 5 is in the state in FIG. 7).

さらに前記過程を詳述すると、図8では、蓋体13の突出部13dがペン芯62の前方部62aに当接しており、図9では、蓋体13の突出部13d及び裏面13cがペン芯62の前方部に当接しており、図10では、蓋体13の前端部に形成された折返部13gがペン芯62の前方部に当接しており、図11では、蓋体13の前端部に形成された折返部13gがペン芯62の中間部に当接している。   More specifically, in FIG. 8, the protrusion 13d of the lid 13 is in contact with the front part 62a of the pen core 62. In FIG. 9, the protrusion 13d and the back surface 13c of the lid 13 are the pen core. 10, the folded portion 13g formed at the front end portion of the lid body 13 is in contact with the front portion of the pen core 62. In FIG. 11, the front end portion of the lid body 13 is contacted. The folded portion 13g formed in the contact with the intermediate portion of the pen core 62.

尚、前述の通りペン先6が前進して突出する際には、図5、図8、図9、図10の順序で前進するが、ペンポイント61aが蓋体13の裏面13cに摺接することがないため、蓋体13の裏面13cが削れてしまうことがなく、蓋体13と弾性先首11とによる気密性が悪くなることもない。
また、突出したペン先6が後退して没入する際には、図10、図9、図8、図5の順序で後退するが、ペンポイント61aが蓋体13に触れることがないため、ペンポイント61aが蓋体13に引っ掛かることで、操作が滑らかでなくなってしまうことがない。
As described above, when the pen tip 6 moves forward and protrudes, it moves forward in the order of FIGS. 5, 8, 9, and 10, but the pen point 61 a is in sliding contact with the back surface 13 c of the lid 13. Therefore, the back surface 13c of the lid body 13 is not scraped off, and the airtightness due to the lid body 13 and the elastic front neck 11 is not deteriorated.
Further, when the protruding pen tip 6 is retracted and retracted, it retracts in the order of FIGS. 10, 9, 8, and 5. However, since the pen point 61 a does not touch the lid 13, Since the point 61a is hooked on the lid 13, the operation does not become smooth.

1…万年筆、
2…前軸、2a…内段、
3…後軸、3a…後端開口部、
4…軸筒、4a…後部内面、
5…ノック体、
6…ペン先、61…ペン、61a…ペンポイント、62…ペン芯、62a…前方部、
7…インキタンク、
8…筆記体、8a…外段、
9…先端カバー、9a…先端開口、
10…中空パイプ、
11…弾性先首、11a…前端傾斜面、
12…押さえバネ、12a…第一アーム、12b…コイル部、12c…第二アーム、
13…蓋体、13a…係止部、13b…支持部、13c…裏面、13d…突出部、13e…後方傾斜面、13f…前方傾斜面、13g…折返部、
14…スプリング、
15…軸棒、
16…ノックカバー、16a…内面、
17…ノック部材、17a…凸部、17b…第一大径部、17c…第二大径部、17d…第三大径部、17e…溝部、17f…最大径部、
18…スライダ、18a…凸部、
19…バネ、
20…Oリング。
1 ... fountain pen,
2 ... front shaft, 2a ... inner stage,
3 ... rear axle, 3a ... rear end opening,
4 ... Shaft cylinder, 4a ... Rear inner surface,
5 ... Knock body,
6 ... pen tip, 61 ... pen, 61a ... pen point, 62 ... pen core, 62a ... front part,
7 ... Ink tank,
8 ... cursive, 8a ... outer tier,
9 ... tip cover, 9a ... tip opening,
10 ... Hollow pipe,
11 ... elastic front neck, 11a ... front end inclined surface,
12 ... presser spring, 12a ... first arm, 12b ... coil part, 12c ... second arm,
13 ... Lid, 13a ... Locking part, 13b ... Supporting part, 13c ... Back surface, 13d ... Projection part, 13e ... Rear inclined surface, 13f ... Front inclined surface, 13g ... Folded part,
14 ... Spring,
15 ... shaft bar,
16 ... knock cover, 16a ... inner surface,
17 ... Knock member, 17a ... Convex part, 17b ... First large diameter part, 17c ... Second large diameter part, 17d ... Third large diameter part, 17e ... Groove part, 17f ... Maximum diameter part,
18 ... Slider, 18a ... Projection,
19 ... Spring,
20 ... O-ring.

Claims (1)

軸筒の内部にペンとペン芯とを重ねたペン先を前方に有した筆記体を前後動可能に収容し、該軸筒内に配設した弾発部材の弾発力により前記軸筒の前方を閉塞する蓋体を備え、前記軸筒に設けた操作部を操作することにより前記筆記体の前方部で前記蓋体を押動して開放する構造の万年筆であって、
前記蓋体の裏面に、前記筆記体が前進する際に前記ペン芯が当接する突出部を設けたことを特徴とした万年筆。
A writing body having a pen tip in which a pen and a pen core are stacked inside the shaft cylinder is accommodated so as to be movable forward and backward, and the elastic force of the resilient member disposed in the shaft cylinder allows the writing of the shaft cylinder. A fountain pen with a structure that includes a lid that closes the front and opens the lid by pushing the lid at the front part of the writing body by operating an operation part provided on the shaft cylinder,
A fountain pen characterized in that a protrusion is provided on the back surface of the lid so that the pen core contacts when the writing body advances.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023095594A (en) * 2021-12-24 2023-07-06 株式会社パイロットコーポレーション writing instrument
CN118769749A (en) * 2024-07-31 2024-10-15 东莞建林实业有限公司 Fountain pen with nib that is resistant to falling and pollution

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080138139A1 (en) * 2006-12-08 2008-06-12 Kotobuki & Co., Ltd. Capless writing tool
JP3155532U (en) * 2009-09-09 2009-11-19 パイロットインキ株式会社 Intrusive writing instrument

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080138139A1 (en) * 2006-12-08 2008-06-12 Kotobuki & Co., Ltd. Capless writing tool
JP3155532U (en) * 2009-09-09 2009-11-19 パイロットインキ株式会社 Intrusive writing instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023095594A (en) * 2021-12-24 2023-07-06 株式会社パイロットコーポレーション writing instrument
JP7767141B2 (en) 2021-12-24 2025-11-11 株式会社パイロットコーポレーション writing implements
CN118769749A (en) * 2024-07-31 2024-10-15 东莞建林实业有限公司 Fountain pen with nib that is resistant to falling and pollution

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